Merge branch 'dev'

Update faq.md

.clang-format

@@ -0,0 +1,84 @@
+# .clang-format
+Language:        Cpp
+AccessModifierOffset: -2
+AlignAfterOpenBracket: Align
+AlignConsecutiveAssignments: false
+AlignConsecutiveDeclarations: false
+AlignConsecutiveMacros:
+  Enabled: true
+  AcrossEmptyLines: true
+  AcrossComments: true
+AlignOperands:   true
+AlignTrailingComments: true
+AllowAllParametersOfDeclarationOnNextLine: false
+AllowShortBlocksOnASingleLine: false
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: Inline
+AllowShortIfStatementsOnASingleLine: true
+AllowShortLoopsOnASingleLine: false
+AlwaysBreakAfterDefinitionReturnType: None
+AlwaysBreakAfterReturnType: None
+AlwaysBreakBeforeMultilineStrings: false
+AlwaysBreakTemplateDeclarations: No
+BinPackArguments: true
+BinPackParameters: true
+BraceWrapping:
+  AfterClass:      false
+  AfterControlStatement: false
+  AfterEnum:       false
+  AfterFunction:   false
+  AfterNamespace:  false
+  AfterObjCDeclaration: false
+  AfterStruct:     false
+  AfterUnion:      false
+  BeforeCatch:     true
+  BeforeElse:      true
+  IndentBraces:    false
+BreakBeforeBinaryOperators: None
+BreakBeforeBraces: Attach
+BreakBeforeTernaryOperators: true
+BreakConstructorInitializersBeforeComma: false
+ColumnLimit:     110
+CommentPragmas:  '^ IWYU pragma:'
+CompactNamespaces: false
+ConstructorInitializerAllOnOneLineOrOnePerLine: false
+Cpp11BracedListStyle: false
+DerivePointerAlignment: false
+DisableFormat:   false
+IncludeBlocks:   Regroup
+IndentCaseLabels: false
+IndentPPDirectives: None
+IndentWidth:     2
+IndentWrappedFunctionNames: false
+KeepEmptyLinesAtTheStartOfBlocks: true
+MacroBlockBegin: ''
+MacroBlockEnd:   ''
+MaxEmptyLinesToKeep: 1
+NamespaceIndentation: None
+ObjCBinPackProtocolList: Auto
+PenaltyBreakBeforeFirstCallParameter: 19
+PenaltyBreakComment: 300
+PenaltyBreakFirstLessLess: 120
+PenaltyBreakString: 1000
+PenaltyExcessCharacter: 100000
+PenaltyReturnTypeOnItsOwnLine: 60
+PointerAlignment: Right
+ReflowComments:  true
+SortIncludes:    true
+SpaceAfterCStyleCast: false
+SpaceAfterTemplateKeyword: true
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeCtorInitializerColon: true
+SpaceBeforeInheritanceColon: true
+SpaceBeforeParens: ControlStatements
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 1
+SpacesInAngles:  false
+SpacesInContainerLiterals: false
+SpacesInCStyleCastParentheses: false
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+Standard:        Auto
+TabWidth:        2
+UseTab:          Never
+AlignEscapedNewlines: LeftWithLastLine

.envrc

@@ -0,0 +1 @@
+use nix

.gitignore

@@ -1,6 +1,11 @@
+.direnv
 .pio
 .vscode/.browse.c_cpp.db*
 .vscode/c_cpp_properties.json
 .vscode/launch.json
 .vscode/ipch
 out/
+.direnv/
+.DS_Store
+.vscode/settings.json
+.vscode/extensions.json

README.md

@@ -25,18 +25,52 @@ MeshCore provides the ability to create wireless mesh networks, similar to Mesht
 
 ## 🚀 How to Get Started
 
-Andy Kirby has published a very useful [intro video](https://www.youtube.com/watch?v=t1qne8uJBAc) which explains the steps for beginners.
+- Watch the [MeshCore Intro Video](https://www.youtube.com/watch?v=t1qne8uJBAc) by Andy Kirby.
+- Read through our [Frequently Asked Questions](./docs/faq.md) section.
+- Flash the MeshCore firmware on a supported device.
+- Connect with a supported client.
 
-For developers, install [PlatformIO](https://docs.platformio.org) in Visual Studio Code.
-Download & Open the MeshCore repository.
-Select a Sample Application: Choose from chat, repeater, other example app.
-Monitor & Communicate using the Serial Monitor (e.g., Serial USB Terminal on Android).
+For developers;
 
-📁 Included Example Applications
-* 📡 Terminal Chat: Secure text communication between devices.
-* 📡 Simple Repeater: Extends network coverage by relaying messages.
-* 📡 Companion Radio: For use with an external chat app, over BLE or USB.
-* 📡 Room Server: A simple BBS server for shared Posts.
+- Install [PlatformIO](https://docs.platformio.org) in [Visual Studio Code](https://code.visualstudio.com).
+- Clone and open the MeshCore repository in Visual Studio Code.
+- See the example applications you can modify and run:
+  - [Companion Radio](./examples/companion_radio) - For use with an external chat app, over BLE, USB or WiFi.
+  - [Simple Repeater](./examples/simple_repeater) - Extends network coverage by relaying messages.
+  - [Simple Room Server](./examples/simple_room_server) - A simple BBS server for shared Posts.
+  - [Simple Secure Chat](./examples/simple_secure_chat) - Secure terminal based text communication between devices.
+
+The Simple Secure Chat example can be interacted with through the Serial Monitor in Visual Studio Code, or with a Serial USB Terminal on Android.
+
+## ⚡️ MeshCore Flasher
+
+We have prebuilt firmware ready to flash on supported devices.
+
+- Launch https://flasher.meshcore.co.uk
+- Select a supported device
+- Flash one of the firmware types:
+  - Companion, Repeater or Room Server
+- Once flashing is complete, you can connect with one of the MeshCore clients below.
+
+## 📱 MeshCore Clients
+
+**Companion Firmware**
+
+The companion firmware can be connected to via BLE, USB or WiFi depending on the firmware type you flashed.
+
+- Web: https://app.meshcore.nz
+- Android: https://play.google.com/store/apps/details?id=com.liamcottle.meshcore.android
+- iOS: https://apps.apple.com/us/app/meshcore/id6742354151?platform=iphone
+- NodeJS: https://github.com/liamcottle/meshcore.js
+- Python: https://github.com/fdlamotte/meshcore-cli
+
+**Repeater and Room Server Firmware**
+
+The repeater and room server firmwares can be setup via USB in the web config tool.
+
+- https://config.meshcore.dev
+
+They can also be managed via LoRa in the mobile app by using the Remote Management feature.
 
 ## 🛠 Hardware Compatibility
 
@@ -53,6 +87,7 @@ MeshCore is designed for use with:
 * LilyGo TLora32 v1.6
 
 ## 📜 License
+
 MeshCore is open-source software released under the MIT License. You are free to use, modify, and distribute it for personal and commercial projects.
 
 ## Contributing
@@ -60,11 +95,16 @@ MeshCore is open-source software released under the MIT License. You are free to
 Please submit PR's using 'dev' as the base branch!
 For minor changes just submit your PR and I'll try to review it, but for anything more 'impactful' please open an Issue first and start a discussion. Is better to sound out what it is you want to achieve first, and try to come to a consensus on what the best approach is, especially when it impacts the structure or architecture of this codebase.
 
+Here are some general principals you should try to adhere to:
+* Keep it simple. Please, don't think like a high-level lang programmer. Think embedded, and keep code concise, without any unecessary layers.
+* No dynamic memory allocation, except during setup/begin functions.
+* Use the same brace and indenting style that's in the core source modules. (A .clang-format is prob going to be added soon, but please do NOT retroactively re-format existing code. This just creates unnecessary diffs that make finding problems harder)
+
 ## 📞 Get Support
 
-Check out the GitHub Issues page to report bugs or request features.
-
-You will be able to find additional guides and components at [my site](https://buymeacoffee.com/ripplebiz), or [join Andy Kirby's Discord](https://discord.gg/GBxVx2JMAy) for discussions.
+- Report bugs and request features on the [GitHub Issues](https://github.com/ripplebiz/MeshCore/issues) page.
+- Find additional guides and components on [my site](https://buymeacoffee.com/ripplebiz).
+- Join [Andy Kirby's Discord](https://discord.gg/GBxVx2JMAy) to chat with the developers and get help from the community.
 
 ## RAK Wireless Board Support in PlatformIO
 

arch/stm32/Adafruit_LittleFS_stm32/README.md

@@ -0,0 +1 @@
+This is LittleFS from Adafruit, stripped from things that makes it not compile with stm32 (refs to TinyUSB and free_rtos, mostly)

arch/stm32/Adafruit_LittleFS_stm32/library.properties

@@ -0,0 +1,10 @@
+name=Adafruit Little File System Libraries
+version=0.11.0
+author=Adafruit
+maintainer=Adafruit <info@adafruit.com>
+sentence=Arduino library for ARM Little File System
+paragraph=Arduino library for ARM Little File System
+category=Data Storage
+url=https://github.com/adafruit/Adafruit_nRF52_Arduino
+architectures=*
+includes=Adafruit_LittleFS.h

arch/stm32/Adafruit_LittleFS_stm32/src/Adafruit_LittleFS.cpp

@@ -0,0 +1,273 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Ha Thach for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <Arduino.h>
+#include <string.h>
+#include "Adafruit_LittleFS.h"
+
+//#include <Adafruit_TinyUSB.h> // for Serial
+
+using namespace Adafruit_LittleFS_Namespace;
+
+#define memclr(buffer, size) memset(buffer, 0, size)
+#define varclr(_var) memclr(_var, sizeof(*(_var)))
+ 
+//--------------------------------------------------------------------+
+// Implementation
+//--------------------------------------------------------------------+
+
+Adafruit_LittleFS::Adafruit_LittleFS (void)
+  : Adafruit_LittleFS(NULL)
+{
+
+}
+
+Adafruit_LittleFS::Adafruit_LittleFS (struct lfs_config* cfg)
+{
+  varclr(&_lfs);
+  _lfs_cfg = cfg;
+  _mounted = false;
+// _mutex = xSemaphoreCreateMutexStatic(&this->_MutexStorageSpace);
+}
+
+Adafruit_LittleFS::~Adafruit_LittleFS ()
+{
+
+}
+
+// Initialize and mount the file system
+// Return true if mounted successfully else probably corrupted.
+// User should format the disk and try again
+bool Adafruit_LittleFS::begin (struct lfs_config * cfg)
+{
+  _lockFS();
+
+  bool ret;
+  // not a loop, just an quick way to short-circuit on error
+  do {
+    if (_mounted) { ret = true; break; }
+    if (cfg) { _lfs_cfg = cfg; }
+    if (nullptr == _lfs_cfg) { ret = false; break; }
+    // actually attempt to mount, and log error if one occurs
+    int err = lfs_mount(&_lfs, _lfs_cfg);
+    PRINT_LFS_ERR(err);
+    _mounted = (err == LFS_ERR_OK);
+    ret = _mounted;
+  } while(0);
+
+  _unlockFS();
+  return ret;
+}
+
+// Tear down and unmount file system
+void Adafruit_LittleFS::end(void)
+{
+  _lockFS();
+
+  if (_mounted)
+  {
+    _mounted = false;
+    int err = lfs_unmount(&_lfs);
+    PRINT_LFS_ERR(err);
+    (void)err;
+  }
+
+  _unlockFS();
+}
+
+bool Adafruit_LittleFS::format (void)
+{
+  _lockFS();
+
+  int err = LFS_ERR_OK;
+  bool attemptMount = _mounted;
+  // not a loop, just an quick way to short-circuit on error
+  do
+  {
+    // if already mounted: umount first -> format -> remount
+    if (_mounted)
+    {
+      _mounted = false;
+      err = lfs_unmount(&_lfs);
+      if ( LFS_ERR_OK != err) { PRINT_LFS_ERR(err); break; }
+    }
+    err = lfs_format(&_lfs, _lfs_cfg);
+    if ( LFS_ERR_OK != err ) { PRINT_LFS_ERR(err); break; }
+
+    if (attemptMount)
+    {
+      err = lfs_mount(&_lfs, _lfs_cfg);
+      if ( LFS_ERR_OK != err ) { PRINT_LFS_ERR(err); break; }
+      _mounted = true;
+    }
+    // success!
+  } while(0);
+
+  _unlockFS();
+  return LFS_ERR_OK == err;
+}
+
+// Open a file or folder
+Adafruit_LittleFS_Namespace::File Adafruit_LittleFS::open (char const *filepath, uint8_t mode)
+{
+  // No lock is required here ... the File() object will synchronize with the mutex provided
+  return Adafruit_LittleFS_Namespace::File(filepath, mode, *this);
+}
+
+// Check if file or folder exists
+bool Adafruit_LittleFS::exists (char const *filepath)
+{
+  struct lfs_info info;
+  _lockFS();
+
+  bool ret = (0 == lfs_stat(&_lfs, filepath, &info));
+
+  _unlockFS();
+  return ret;
+}
+
+
+// Create a directory, create intermediate parent if needed
+bool Adafruit_LittleFS::mkdir (char const *filepath)
+{
+  bool ret = true;
+  const char* slash = filepath;
+  if ( slash[0] == '/' ) slash++;    // skip root '/'
+
+  _lockFS();
+
+  // make intermediate parent directory(ies)
+  while ( NULL != (slash = strchr(slash, '/')) )
+  {
+    char parent[slash - filepath + 1] = { 0 };
+    memcpy(parent, filepath, slash - filepath);
+
+    int rc = lfs_mkdir(&_lfs, parent);
+    if ( rc != LFS_ERR_OK && rc != LFS_ERR_EXIST )
+    {
+      PRINT_LFS_ERR(rc);
+      ret = false;
+      break;
+    }
+    slash++;
+  }
+  // make the final requested directory
+  if (ret)
+  {
+    int rc = lfs_mkdir(&_lfs, filepath);
+    if ( rc != LFS_ERR_OK && rc != LFS_ERR_EXIST )
+    {
+      PRINT_LFS_ERR(rc);
+      ret = false;
+    }
+  }
+
+  _unlockFS();
+  return ret;
+}
+
+// Remove a file
+bool Adafruit_LittleFS::remove (char const *filepath)
+{
+  _lockFS();
+
+  int err = lfs_remove(&_lfs, filepath);
+  PRINT_LFS_ERR(err);
+
+  _unlockFS();
+  return LFS_ERR_OK == err;
+}
+
+// Rename a file
+bool Adafruit_LittleFS::rename (char const *oldfilepath, char const *newfilepath)
+{
+  _lockFS();
+
+  int err = lfs_rename(&_lfs, oldfilepath, newfilepath);
+  PRINT_LFS_ERR(err);
+
+  _unlockFS();
+  return LFS_ERR_OK == err;
+}
+
+// Remove a folder
+bool Adafruit_LittleFS::rmdir (char const *filepath)
+{
+  _lockFS();
+
+  int err = lfs_remove(&_lfs, filepath);
+  PRINT_LFS_ERR(err);
+
+  _unlockFS();
+  return LFS_ERR_OK == err;
+}
+
+// Remove a folder recursively
+bool Adafruit_LittleFS::rmdir_r (char const *filepath)
+{
+  /* adafruit: lfs is modified to remove non-empty folder,
+   According to below issue, comment these 2 line won't corrupt filesystem
+   at least when using LFS v1.  If moving to LFS v2, see tracked issue
+   to see if issues (such as the orphans in threaded linked list) are resolved.
+   https://github.com/ARMmbed/littlefs/issues/43
+   */
+  _lockFS();
+
+  int err = lfs_remove(&_lfs, filepath);
+  PRINT_LFS_ERR(err);
+
+  _unlockFS();
+  return LFS_ERR_OK == err;
+}
+
+//------------- Debug -------------//
+#if CFG_DEBUG
+
+const char* dbg_strerr_lfs (int32_t err)
+{
+  switch ( err )
+  {
+    case LFS_ERR_OK       : return "LFS_ERR_OK";
+    case LFS_ERR_IO       : return "LFS_ERR_IO";
+    case LFS_ERR_CORRUPT  : return "LFS_ERR_CORRUPT";
+    case LFS_ERR_NOENT    : return "LFS_ERR_NOENT";
+    case LFS_ERR_EXIST    : return "LFS_ERR_EXIST";
+    case LFS_ERR_NOTDIR   : return "LFS_ERR_NOTDIR";
+    case LFS_ERR_ISDIR    : return "LFS_ERR_ISDIR";
+    case LFS_ERR_NOTEMPTY : return "LFS_ERR_NOTEMPTY";
+    case LFS_ERR_BADF     : return "LFS_ERR_BADF";
+    case LFS_ERR_INVAL    : return "LFS_ERR_INVAL";
+    case LFS_ERR_NOSPC    : return "LFS_ERR_NOSPC";
+    case LFS_ERR_NOMEM    : return "LFS_ERR_NOMEM";
+
+    default:
+      static char errcode[10];
+      sprintf(errcode, "%ld", err);
+      return errcode;
+  }
+
+  return NULL;
+}
+
+#endif

arch/stm32/Adafruit_LittleFS_stm32/src/Adafruit_LittleFS.h

@@ -0,0 +1,102 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Ha Thach for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef ADAFRUIT_LITTLEFS_H_
+#define ADAFRUIT_LITTLEFS_H_
+
+#include <Stream.h>
+
+// Internal Flash uses ARM Little FileSystem
+// https://github.com/ARMmbed/littlefs
+#include "littlefs/lfs.h"
+#include "Adafruit_LittleFS_File.h"
+//#include "rtos.h" // tied to FreeRTOS for serialization
+
+class Adafruit_LittleFS
+{
+  public:
+    Adafruit_LittleFS (void);
+    Adafruit_LittleFS (struct lfs_config* cfg);
+    virtual ~Adafruit_LittleFS ();
+
+    bool begin(struct lfs_config * cfg = NULL);
+    void end(void);
+
+    // Open the specified file/directory with the supplied mode (e.g. read or
+    // write, etc). Returns a File object for interacting with the file.
+    // Note that currently only one file can be open at a time.
+    Adafruit_LittleFS_Namespace::File open (char const *filename, uint8_t mode = Adafruit_LittleFS_Namespace::FILE_O_READ);
+
+    // Methods to determine if the requested file path exists.
+    bool exists (char const *filepath);
+
+    // Create the requested directory hierarchy--if intermediate directories
+    // do not exist they will be created.
+    bool mkdir (char const *filepath);
+
+    // Delete the file.
+    bool remove (char const *filepath);
+
+    // Rename the file.
+    bool rename (char const *oldfilepath, char const *newfilepath);
+
+    // Delete a folder (must be empty)
+    bool rmdir (char const *filepath);
+
+    // Delete a folder (recursively)
+    bool rmdir_r (char const *filepath);
+
+    // format file system
+    bool format (void);
+
+    /*------------------------------------------------------------------*/
+    /* INTERNAL USAGE ONLY
+     * Although declare as public, it is meant to be invoked by internal
+     * code. User should not call these directly
+     *------------------------------------------------------------------*/
+    lfs_t* _getFS   (void) { return &_lfs; }
+    void   _lockFS  (void) { }//xSemaphoreTake(_mutex,  portMAX_DELAY); }
+    void   _unlockFS(void) { }//xSemaphoreGive(_mutex); }
+
+  protected:
+    bool _mounted;
+    struct lfs_config* _lfs_cfg;
+    lfs_t _lfs;
+//    SemaphoreHandle_t _mutex;
+
+  private:
+//    StaticSemaphore_t _MutexStorageSpace;
+};
+
+#if !CFG_DEBUG
+  #define VERIFY_LFS(...)       _GET_3RD_ARG(__VA_ARGS__, VERIFY_ERR_2ARGS, VERIFY_ERR_1ARGS)(__VA_ARGS__, NULL)
+  #define PRINT_LFS_ERR(_err)
+#else
+  #define VERIFY_LFS(...)       _GET_3RD_ARG(__VA_ARGS__, VERIFY_ERR_2ARGS, VERIFY_ERR_1ARGS)(__VA_ARGS__, dbg_strerr_lfs)
+  #define PRINT_LFS_ERR(_err)   do { if (_err) { VERIFY_MESS((long int)_err, dbg_strerr_lfs); } } while(0) // LFS_ERR are of type int, VERIFY_MESS expects long_int
+
+  const char* dbg_strerr_lfs (int32_t err);
+#endif
+
+#endif /* ADAFRUIT_LITTLEFS_H_ */

arch/stm32/Adafruit_LittleFS_stm32/src/Adafruit_LittleFS_File.cpp

@@ -0,0 +1,420 @@
+/* 
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Ha Thach for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <Arduino.h>
+#include "Adafruit_LittleFS.h"
+#include "littlefs/lfs.h"
+
+//--------------------------------------------------------------------+
+// MACRO TYPEDEF CONSTANT ENUM DECLARATION
+//--------------------------------------------------------------------+
+
+using namespace Adafruit_LittleFS_Namespace;
+
+File::File (Adafruit_LittleFS &fs)
+{
+  _fs = &fs;
+  _is_dir = false;
+  _name[0] = 0;
+  _name[LFS_NAME_MAX] = 0;
+  _dir_path = NULL;
+
+  _dir = NULL;
+  _file = NULL;
+}
+
+File::File (char const *filename, uint8_t mode, Adafruit_LittleFS &fs)
+ : File(fs)
+{
+  // public constructor calls public API open(), which will obtain the mutex
+  this->open(filename, mode);
+}
+
+bool File::_open_file (char const *filepath, uint8_t mode)
+{
+  int flags = (mode == FILE_O_READ) ? LFS_O_RDONLY :
+              (mode == FILE_O_WRITE) ? (LFS_O_RDWR | LFS_O_CREAT) : 0;
+
+  if ( flags )
+  {
+    _file = (lfs_file_t*) malloc(sizeof(lfs_file_t));
+    if (!_file) return false;
+
+    int rc = lfs_file_open(_fs->_getFS(), _file, filepath, flags);
+
+    if ( rc )
+    {
+      // failed to open
+      PRINT_LFS_ERR(rc);
+      // free memory
+      free(_file);
+      _file = NULL;
+      return false;
+    }
+
+    // move to end of file
+    if ( mode == FILE_O_WRITE ) lfs_file_seek(_fs->_getFS(), _file, 0, LFS_SEEK_END);
+
+    _is_dir = false;
+  }
+
+  return true;
+}
+
+bool File::_open_dir (char const *filepath)
+{
+  _dir = (lfs_dir_t*) malloc(sizeof(lfs_dir_t));
+  if (!_dir) return false;
+
+  int rc = lfs_dir_open(_fs->_getFS(), _dir, filepath);
+
+  if ( rc )
+  {
+    // failed to open
+    PRINT_LFS_ERR(rc);
+    // free memory
+    free(_dir);
+    _dir = NULL;
+    return false;
+  }
+
+  _is_dir = true;
+
+  _dir_path = (char*) malloc(strlen(filepath) + 1);
+  strcpy(_dir_path, filepath);
+
+  return true;
+}
+
+bool File::open (char const *filepath, uint8_t mode)
+{
+  bool ret = false;
+  _fs->_lockFS();
+
+  ret = this->_open(filepath, mode);
+
+  _fs->_unlockFS();
+  return ret;
+}
+
+bool File::_open (char const *filepath, uint8_t mode)
+{
+  bool ret = false;
+
+  // close if currently opened
+  if ( this->isOpen() ) _close();
+
+  struct lfs_info info;
+  int rc = lfs_stat(_fs->_getFS(), filepath, &info);
+
+  if ( LFS_ERR_OK == rc )
+  {
+    // file existed, open file or directory accordingly
+    ret = (info.type == LFS_TYPE_REG) ? _open_file(filepath, mode) : _open_dir(filepath);
+  }
+  else if ( LFS_ERR_NOENT == rc )
+  {
+    // file not existed, only proceed with FILE_O_WRITE mode
+    if ( mode == FILE_O_WRITE ) ret = _open_file(filepath, mode);
+  }
+  else
+  {
+    PRINT_LFS_ERR(rc);
+  }
+
+  // save bare file name
+  if (ret)
+  {
+    char const* splash = strrchr(filepath, '/');
+    strncpy(_name, splash ? (splash + 1) : filepath, LFS_NAME_MAX);
+  }
+  return ret;
+}
+
+size_t File::write (uint8_t ch)
+{
+  return write(&ch, 1);
+}
+
+size_t File::write (uint8_t const *buf, size_t size)
+{
+  lfs_ssize_t wrcount = 0;
+  _fs->_lockFS();
+
+  if (!this->_is_dir)
+  {
+    wrcount = lfs_file_write(_fs->_getFS(), _file, buf, size);
+    if (wrcount < 0)
+    {
+      wrcount = 0;
+    }
+  }
+
+  _fs->_unlockFS();
+  return wrcount;
+}
+
+int File::read (void)
+{
+  // this thin wrapper relies on called function to synchronize
+  int ret = -1;
+  uint8_t ch;
+  if (read(&ch, 1) > 0)
+  {
+    ret = static_cast<int>(ch);
+  }
+  return ret;
+}
+
+int File::read (void *buf, uint16_t nbyte)
+{
+  int ret = 0;
+  _fs->_lockFS();
+
+  if (!this->_is_dir)
+  {
+    ret = lfs_file_read(_fs->_getFS(), _file, buf, nbyte);
+  }
+
+  _fs->_unlockFS();
+  return ret;
+}
+
+int File::peek (void)
+{
+  int ret = -1;
+  _fs->_lockFS();
+
+  if (!this->_is_dir)
+  {
+    uint32_t pos = lfs_file_tell(_fs->_getFS(), _file);
+    uint8_t ch = 0;
+    if (lfs_file_read(_fs->_getFS(), _file, &ch, 1) > 0)
+    {
+      ret = static_cast<int>(ch);
+    }
+    (void) lfs_file_seek(_fs->_getFS(), _file, pos, LFS_SEEK_SET);
+  }
+
+  _fs->_unlockFS();
+  return ret;
+}
+
+int File::available (void)
+{
+  int ret = 0;
+  _fs->_lockFS();
+
+  if (!this->_is_dir)
+  {
+    uint32_t size = lfs_file_size(_fs->_getFS(), _file);
+    uint32_t pos  = lfs_file_tell(_fs->_getFS(), _file);
+    ret = size - pos;
+  }
+
+  _fs->_unlockFS();
+  return ret;
+}
+
+bool File::seek (uint32_t pos)
+{
+  bool ret = false;
+  _fs->_lockFS();
+
+  if (!this->_is_dir)
+  {
+    ret = lfs_file_seek(_fs->_getFS(), _file, pos, LFS_SEEK_SET) >= 0;
+  }
+
+  _fs->_unlockFS();
+  return ret;
+}
+
+uint32_t File::position (void)
+{
+  uint32_t ret = 0;
+  _fs->_lockFS();
+
+  if (!this->_is_dir)
+  {
+    ret = lfs_file_tell(_fs->_getFS(), _file);
+  }
+
+  _fs->_unlockFS();
+  return ret;
+}
+
+uint32_t File::size (void)
+{
+  uint32_t ret = 0;
+  _fs->_lockFS();
+
+  if (!this->_is_dir)
+  {
+    ret = lfs_file_size(_fs->_getFS(), _file);
+  }
+
+  _fs->_unlockFS();
+  return ret;
+}
+
+bool File::truncate (uint32_t pos)
+{
+  int32_t ret=LFS_ERR_ISDIR;
+  _fs->_lockFS();
+  if (!this->_is_dir)
+  {
+    ret = lfs_file_truncate(_fs->_getFS(), _file, pos);
+  }
+  _fs->_unlockFS();
+  return ( ret == 0 );
+}
+
+bool File::truncate (void)
+{
+  int32_t ret=LFS_ERR_ISDIR;
+  uint32_t pos;
+  _fs->_lockFS();
+  if (!this->_is_dir)
+  {
+    pos = lfs_file_tell(_fs->_getFS(), _file);
+    ret = lfs_file_truncate(_fs->_getFS(), _file, pos);
+  }
+  _fs->_unlockFS();
+  return ( ret == 0 );
+}
+
+void File::flush (void)
+{
+  _fs->_lockFS();
+
+  if (!this->_is_dir)
+  {
+    lfs_file_sync(_fs->_getFS(), _file);
+  }
+
+  _fs->_unlockFS();
+  return;
+}
+
+void File::close (void)
+{
+  _fs->_lockFS();
+  this->_close();
+  _fs->_unlockFS();
+}
+
+void File::_close(void)
+{
+  if ( this->isOpen() )
+  {
+    if ( this->_is_dir )
+    {
+      lfs_dir_close(_fs->_getFS(), _dir);
+      free(_dir);
+      _dir = NULL;
+
+      if ( this->_dir_path ) free(_dir_path);
+      _dir_path = NULL;
+    }
+    else
+    {
+      lfs_file_close(this->_fs->_getFS(), _file);
+      free(_file);
+      _file = NULL;
+    }
+  }
+}
+
+File::operator bool (void)
+{
+  return isOpen();
+}
+
+bool File::isOpen(void)
+{
+  return (_file != NULL) || (_dir != NULL);
+}
+
+// WARNING -- although marked as `const`, the values pointed
+//            to may change.  For example, if the same File
+//            object has `open()` called with a different
+//            file or directory name, this same pointer will
+//            suddenly (unexpectedly?) have different values.
+char const* File::name (void)
+{
+  return this->_name;
+}
+
+bool File::isDirectory (void)
+{
+  return this->_is_dir;
+}
+
+File File::openNextFile (uint8_t mode)
+{
+  _fs->_lockFS();
+
+  File ret(*_fs);
+  if (this->_is_dir)
+  {
+    struct lfs_info info;
+    int rc;
+
+    // lfs_dir_read returns 0 when reaching end of directory, 1 if found an entry
+    // Skip the "." and ".." entries ...
+    do
+    {
+      rc = lfs_dir_read(_fs->_getFS(), _dir, &info);
+    } while ( rc == 1 && (!strcmp(".", info.name) || !strcmp("..", info.name)) );
+
+    if ( rc == 1 )
+    {
+      // string cat name with current folder
+      char filepath[strlen(_dir_path) + 1 + strlen(info.name) + 1]; // potential for significant stack usage
+      strcpy(filepath, _dir_path);
+      if ( !(_dir_path[0] == '/' && _dir_path[1] == 0) ) strcat(filepath, "/");    // only add '/' if cwd is not root
+      strcat(filepath, info.name);
+
+      (void)ret._open(filepath, mode); // return value is ignored ... caller is expected to check isOpened()
+    }
+    else if ( rc < 0 )
+    {
+      PRINT_LFS_ERR(rc);
+    }
+  }
+  _fs->_unlockFS();
+  return ret;
+}
+
+void File::rewindDirectory (void)
+{
+  _fs->_lockFS();
+  if (this->_is_dir)
+  {
+    lfs_dir_rewind(_fs->_getFS(), _dir);
+  }
+  _fs->_unlockFS();
+}
+

arch/stm32/Adafruit_LittleFS_stm32/src/Adafruit_LittleFS_File.h

@@ -0,0 +1,108 @@
+/* 
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Ha Thach for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef ADAFRUIT_LITTLEFS_FILE_H_
+#define ADAFRUIT_LITTLEFS_FILE_H_
+
+// Forward declaration
+class Adafruit_LittleFS;
+
+namespace Adafruit_LittleFS_Namespace
+{
+
+// avoid conflict with other FileSystem FILE_READ/FILE_WRITE
+enum
+{
+  FILE_O_READ = 0,
+  FILE_O_WRITE = 1,
+};
+
+class File : public Stream
+{
+  public:
+    File (Adafruit_LittleFS &fs);
+    File (char const *filename, uint8_t mode, Adafruit_LittleFS &fs);
+
+  public:
+
+    bool open (char const *filename, uint8_t mode);
+
+    //------------- Stream API -------------//
+    virtual size_t write (uint8_t ch);
+    virtual size_t write (uint8_t const *buf, size_t size);
+    size_t write(const char *str) {
+      if (str == NULL) return 0;
+      return write((const uint8_t *)str, strlen(str));
+    }
+    size_t write(const char *buffer, size_t size) {
+      return write((const uint8_t *)buffer, size);
+    }
+
+    virtual int read (void);
+    int read (void *buf, uint16_t nbyte);
+
+    virtual int peek (void);
+    virtual int available (void);
+    virtual void flush (void);
+
+    bool seek (uint32_t pos);
+    uint32_t position (void);
+    uint32_t size (void);
+
+    bool truncate (uint32_t pos);
+    bool truncate (void);
+
+    void close (void);
+
+    operator bool (void);
+
+    bool isOpen(void);
+    char const* name (void);
+
+    bool isDirectory (void);
+    File openNextFile (uint8_t mode = FILE_O_READ);
+    void rewindDirectory (void);
+
+  private:
+    Adafruit_LittleFS* _fs;
+
+    bool _is_dir;
+
+    union {
+        lfs_file_t* _file;
+        lfs_dir_t*  _dir;
+    };
+
+    char* _dir_path;
+    char  _name[LFS_NAME_MAX+1];
+
+    bool _open(char const *filepath, uint8_t mode);
+    bool _open_file(char const *filepath, uint8_t mode);
+    bool _open_dir (char const *filepath);
+    void _close(void);
+};
+
+}
+
+#endif /* ADAFRUIT_LITTLEFS_FILE_H_ */

arch/stm32/Adafruit_LittleFS_stm32/src/littlefs/LICENSE.md

@@ -0,0 +1,24 @@
+Copyright (c) 2017, Arm Limited. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+-  Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+-  Redistributions in binary form must reproduce the above copyright notice, this
+   list of conditions and the following disclaimer in the documentation and/or
+   other materials provided with the distribution.
+-  Neither the name of ARM nor the names of its contributors may be used to
+   endorse or promote products derived from this software without specific prior
+   written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

arch/stm32/Adafruit_LittleFS_stm32/src/littlefs/README.md

@@ -0,0 +1,177 @@
+## The little filesystem
+
+A little fail-safe filesystem designed for embedded systems.
+
+```
+   | | |     .---._____
+  .-----.   |          |
+--|o    |---| littlefs |
+--|     |---|          |
+  '-----'   '----------'
+   | | |
+```
+
+**Bounded RAM/ROM** - The littlefs is designed to work with a limited amount
+of memory. Recursion is avoided and dynamic memory is limited to configurable
+buffers that can be provided statically.
+
+**Power-loss resilient** - The littlefs is designed for systems that may have
+random power failures. The littlefs has strong copy-on-write guarantees and
+storage on disk is always kept in a valid state.
+
+**Wear leveling** - Since the most common form of embedded storage is erodible
+flash memories, littlefs provides a form of dynamic wear leveling for systems
+that can not fit a full flash translation layer.
+
+## Example
+
+Here's a simple example that updates a file named `boot_count` every time
+main runs. The program can be interrupted at any time without losing track
+of how many times it has been booted and without corrupting the filesystem:
+
+``` c
+#include "lfs.h"
+
+// variables used by the filesystem
+lfs_t lfs;
+lfs_file_t file;
+
+// configuration of the filesystem is provided by this struct
+const struct lfs_config cfg = {
+    // block device operations
+    .read  = user_provided_block_device_read,
+    .prog  = user_provided_block_device_prog,
+    .erase = user_provided_block_device_erase,
+    .sync  = user_provided_block_device_sync,
+
+    // block device configuration
+    .read_size = 16,
+    .prog_size = 16,
+    .block_size = 4096,
+    .block_count = 128,
+    .lookahead = 128,
+};
+
+// entry point
+int main(void) {
+    // mount the filesystem
+    int err = lfs_mount(&lfs, &cfg);
+
+    // reformat if we can't mount the filesystem
+    // this should only happen on the first boot
+    if (err) {
+        lfs_format(&lfs, &cfg);
+        lfs_mount(&lfs, &cfg);
+    }
+
+    // read current count
+    uint32_t boot_count = 0;
+    lfs_file_open(&lfs, &file, "boot_count", LFS_O_RDWR | LFS_O_CREAT);
+    lfs_file_read(&lfs, &file, &boot_count, sizeof(boot_count));
+
+    // update boot count
+    boot_count += 1;
+    lfs_file_rewind(&lfs, &file);
+    lfs_file_write(&lfs, &file, &boot_count, sizeof(boot_count));
+
+    // remember the storage is not updated until the file is closed successfully
+    lfs_file_close(&lfs, &file);
+
+    // release any resources we were using
+    lfs_unmount(&lfs);
+
+    // print the boot count
+    printf("boot_count: %d\n", boot_count);
+}
+```
+
+## Usage
+
+Detailed documentation (or at least as much detail as is currently available)
+can be found in the comments in [lfs.h](lfs.h).
+
+As you may have noticed, littlefs takes in a configuration structure that
+defines how the filesystem operates. The configuration struct provides the
+filesystem with the block device operations and dimensions, tweakable
+parameters that tradeoff memory usage for performance, and optional
+static buffers if the user wants to avoid dynamic memory.
+
+The state of the littlefs is stored in the `lfs_t` type which is left up
+to the user to allocate, allowing multiple filesystems to be in use
+simultaneously. With the `lfs_t` and configuration struct, a user can
+format a block device or mount the filesystem.
+
+Once mounted, the littlefs provides a full set of POSIX-like file and
+directory functions, with the deviation that the allocation of filesystem
+structures must be provided by the user.
+
+All POSIX operations, such as remove and rename, are atomic, even in event
+of power-loss. Additionally, no file updates are actually committed to the
+filesystem until sync or close is called on the file.
+
+## Other notes
+
+All littlefs have the potential to return a negative error code. The errors
+can be either one of those found in the `enum lfs_error` in [lfs.h](lfs.h),
+or an error returned by the user's block device operations.
+
+In the configuration struct, the `prog` and `erase` function provided by the
+user may return a `LFS_ERR_CORRUPT` error if the implementation already can
+detect corrupt blocks. However, the wear leveling does not depend on the return
+code of these functions, instead all data is read back and checked for
+integrity.
+
+If your storage caches writes, make sure that the provided `sync` function
+flushes all the data to memory and ensures that the next read fetches the data
+from memory, otherwise data integrity can not be guaranteed. If the `write`
+function does not perform caching, and therefore each `read` or `write` call
+hits the memory, the `sync` function can simply return 0.
+
+## Reference material
+
+[DESIGN.md](DESIGN.md) - DESIGN.md contains a fully detailed dive into how
+littlefs actually works. I would encourage you to read it since the
+solutions and tradeoffs at work here are quite interesting.
+
+[SPEC.md](SPEC.md) - SPEC.md contains the on-disk specification of littlefs
+with all the nitty-gritty details. Can be useful for developing tooling.
+
+## Testing
+
+The littlefs comes with a test suite designed to run on a PC using the
+[emulated block device](emubd/lfs_emubd.h) found in the emubd directory.
+The tests assume a Linux environment and can be started with make:
+
+``` bash
+make test
+```
+
+## License
+
+The littlefs is provided under the [BSD-3-Clause](https://spdx.org/licenses/BSD-3-Clause.html)
+license. See [LICENSE.md](LICENSE.md) for more information. Contributions to
+this project are accepted under the same license.
+
+Individual files contain the following tag instead of the full license text.
+
+    SPDX-License-Identifier:    BSD-3-Clause
+
+This enables machine processing of license information based on the SPDX
+License Identifiers that are here available: http://spdx.org/licenses/
+
+## Related projects
+
+[Mbed OS](https://github.com/ARMmbed/mbed-os/tree/master/features/filesystem/littlefs) -
+The easiest way to get started with littlefs is to jump into [Mbed](https://os.mbed.com/),
+which already has block device drivers for most forms of embedded storage. The
+littlefs is available in Mbed OS as the [LittleFileSystem](https://os.mbed.com/docs/latest/reference/littlefilesystem.html)
+class.
+
+[littlefs-fuse](https://github.com/geky/littlefs-fuse) - A [FUSE](https://github.com/libfuse/libfuse)
+wrapper for littlefs. The project allows you to mount littlefs directly on a
+Linux machine. Can be useful for debugging littlefs if you have an SD card
+handy.
+
+[littlefs-js](https://github.com/geky/littlefs-js) - A javascript wrapper for
+littlefs. I'm not sure why you would want this, but it is handy for demos.
+You can see it in action [here](http://littlefs.geky.net/demo.html).

arch/stm32/Adafruit_LittleFS_stm32/src/littlefs/lfs.h

@@ -0,0 +1,501 @@
+/*
+ * The little filesystem
+ *
+ * Copyright (c) 2017, Arm Limited. All rights reserved.
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+#ifndef LFS_H
+#define LFS_H
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+/// Version info ///
+
+// Software library version
+// Major (top-nibble), incremented on backwards incompatible changes
+// Minor (bottom-nibble), incremented on feature additions
+#define LFS_VERSION 0x00010007
+#define LFS_VERSION_MAJOR (0xffff & (LFS_VERSION >> 16))
+#define LFS_VERSION_MINOR (0xffff & (LFS_VERSION >>  0))
+
+// Version of On-disk data structures
+// Major (top-nibble), incremented on backwards incompatible changes
+// Minor (bottom-nibble), incremented on feature additions
+#define LFS_DISK_VERSION 0x00010001
+#define LFS_DISK_VERSION_MAJOR (0xffff & (LFS_DISK_VERSION >> 16))
+#define LFS_DISK_VERSION_MINOR (0xffff & (LFS_DISK_VERSION >>  0))
+
+
+/// Definitions ///
+
+// Type definitions
+typedef uint32_t lfs_size_t;
+typedef uint32_t lfs_off_t;
+
+typedef int32_t  lfs_ssize_t;
+typedef int32_t  lfs_soff_t;
+
+typedef uint32_t lfs_block_t;
+
+// Max name size in bytes
+#ifndef LFS_NAME_MAX
+#define LFS_NAME_MAX 255
+#endif
+
+// Max file size in bytes
+#ifndef LFS_FILE_MAX
+#define LFS_FILE_MAX 2147483647
+#endif
+
+// Possible error codes, these are negative to allow
+// valid positive return values
+enum lfs_error {
+    LFS_ERR_OK       = 0,    // No error
+    LFS_ERR_IO       = -5,   // Error during device operation
+    LFS_ERR_CORRUPT  = -52,  // Corrupted
+    LFS_ERR_NOENT    = -2,   // No directory entry
+    LFS_ERR_EXIST    = -17,  // Entry already exists
+    LFS_ERR_NOTDIR   = -20,  // Entry is not a dir
+    LFS_ERR_ISDIR    = -21,  // Entry is a dir
+    LFS_ERR_NOTEMPTY = -39,  // Dir is not empty
+    LFS_ERR_BADF     = -9,   // Bad file number
+    LFS_ERR_FBIG     = -27,  // File too large
+    LFS_ERR_INVAL    = -22,  // Invalid parameter
+    LFS_ERR_NOSPC    = -28,  // No space left on device
+    LFS_ERR_NOMEM    = -12,  // No more memory available
+};
+
+// File types
+enum lfs_type {
+    LFS_TYPE_REG        = 0x11,
+    LFS_TYPE_DIR        = 0x22,
+    LFS_TYPE_SUPERBLOCK = 0x2e,
+};
+
+// File open flags
+enum lfs_open_flags {
+    // open flags
+    LFS_O_RDONLY = 1,        // Open a file as read only
+    LFS_O_WRONLY = 2,        // Open a file as write only
+    LFS_O_RDWR   = 3,        // Open a file as read and write
+    LFS_O_CREAT  = 0x0100,   // Create a file if it does not exist
+    LFS_O_EXCL   = 0x0200,   // Fail if a file already exists
+    LFS_O_TRUNC  = 0x0400,   // Truncate the existing file to zero size
+    LFS_O_APPEND = 0x0800,   // Move to end of file on every write
+
+    // internally used flags
+    LFS_F_DIRTY   = 0x10000, // File does not match storage
+    LFS_F_WRITING = 0x20000, // File has been written since last flush
+    LFS_F_READING = 0x40000, // File has been read since last flush
+    LFS_F_ERRED   = 0x80000, // An error occured during write
+};
+
+// File seek flags
+enum lfs_whence_flags {
+    LFS_SEEK_SET = 0,   // Seek relative to an absolute position
+    LFS_SEEK_CUR = 1,   // Seek relative to the current file position
+    LFS_SEEK_END = 2,   // Seek relative to the end of the file
+};
+
+
+// Configuration provided during initialization of the littlefs
+struct lfs_config {
+    // Opaque user provided context that can be used to pass
+    // information to the block device operations
+    void *context;
+
+    // Read a region in a block. Negative error codes are propogated
+    // to the user.
+    int (*read)(const struct lfs_config *c, lfs_block_t block,
+            lfs_off_t off, void *buffer, lfs_size_t size);
+
+    // Program a region in a block. The block must have previously
+    // been erased. Negative error codes are propogated to the user.
+    // May return LFS_ERR_CORRUPT if the block should be considered bad.
+    int (*prog)(const struct lfs_config *c, lfs_block_t block,
+            lfs_off_t off, const void *buffer, lfs_size_t size);
+
+    // Erase a block. A block must be erased before being programmed.
+    // The state of an erased block is undefined. Negative error codes
+    // are propogated to the user.
+    // May return LFS_ERR_CORRUPT if the block should be considered bad.
+    int (*erase)(const struct lfs_config *c, lfs_block_t block);
+
+    // Sync the state of the underlying block device. Negative error codes
+    // are propogated to the user.
+    int (*sync)(const struct lfs_config *c);
+
+    // Minimum size of a block read. This determines the size of read buffers.
+    // This may be larger than the physical read size to improve performance
+    // by caching more of the block device.
+    lfs_size_t read_size;
+
+    // Minimum size of a block program. This determines the size of program
+    // buffers. This may be larger than the physical program size to improve
+    // performance by caching more of the block device.
+    // Must be a multiple of the read size.
+    lfs_size_t prog_size;
+
+    // Size of an erasable block. This does not impact ram consumption and
+    // may be larger than the physical erase size. However, this should be
+    // kept small as each file currently takes up an entire block.
+    // Must be a multiple of the program size.
+    lfs_size_t block_size;
+
+    // Number of erasable blocks on the device.
+    lfs_size_t block_count;
+
+    // Number of blocks to lookahead during block allocation. A larger
+    // lookahead reduces the number of passes required to allocate a block.
+    // The lookahead buffer requires only 1 bit per block so it can be quite
+    // large with little ram impact. Should be a multiple of 32.
+    lfs_size_t lookahead;
+
+    // Optional, statically allocated read buffer. Must be read sized.
+    void *read_buffer;
+
+    // Optional, statically allocated program buffer. Must be program sized.
+    void *prog_buffer;
+
+    // Optional, statically allocated lookahead buffer. Must be 1 bit per
+    // lookahead block.
+    void *lookahead_buffer;
+
+    // Optional, statically allocated buffer for files. Must be program sized.
+    // If enabled, only one file may be opened at a time.
+    void *file_buffer;
+};
+
+// Optional configuration provided during lfs_file_opencfg
+struct lfs_file_config {
+    // Optional, statically allocated buffer for files. Must be program sized.
+    // If NULL, malloc will be used by default.
+    void *buffer;
+};
+
+// File info structure
+struct lfs_info {
+    // Type of the file, either LFS_TYPE_REG or LFS_TYPE_DIR
+    uint8_t type;
+
+    // Size of the file, only valid for REG files
+    lfs_size_t size;
+
+    // Name of the file stored as a null-terminated string
+    char name[LFS_NAME_MAX+1];
+};
+
+
+/// littlefs data structures ///
+typedef struct lfs_entry {
+    lfs_off_t off;
+
+    struct lfs_disk_entry {
+        uint8_t type;
+        uint8_t elen;
+        uint8_t alen;
+        uint8_t nlen;
+        union {
+            struct {
+                lfs_block_t head;
+                lfs_size_t size;
+            } file;
+            lfs_block_t dir[2];
+        } u;
+    } d;
+} lfs_entry_t;
+
+typedef struct lfs_cache {
+    lfs_block_t block;
+    lfs_off_t off;
+    uint8_t *buffer;
+} lfs_cache_t;
+
+typedef struct lfs_file {
+    struct lfs_file *next;
+    lfs_block_t pair[2];
+    lfs_off_t poff;
+
+    lfs_block_t head;
+    lfs_size_t size;
+
+    const struct lfs_file_config *cfg;
+    uint32_t flags;
+    lfs_off_t pos;
+    lfs_block_t block;
+    lfs_off_t off;
+    lfs_cache_t cache;
+} lfs_file_t;
+
+typedef struct lfs_dir {
+    struct lfs_dir *next;
+    lfs_block_t pair[2];
+    lfs_off_t off;
+
+    lfs_block_t head[2];
+    lfs_off_t pos;
+
+    struct lfs_disk_dir {
+        uint32_t rev;
+        lfs_size_t size;
+        lfs_block_t tail[2];
+    } d;
+} lfs_dir_t;
+
+typedef struct lfs_superblock {
+    lfs_off_t off;
+
+    struct lfs_disk_superblock {
+        uint8_t type;
+        uint8_t elen;
+        uint8_t alen;
+        uint8_t nlen;
+        lfs_block_t root[2];
+        uint32_t block_size;
+        uint32_t block_count;
+        uint32_t version;
+        char magic[8];
+    } d;
+} lfs_superblock_t;
+
+typedef struct lfs_free {
+    lfs_block_t off;
+    lfs_block_t size;
+    lfs_block_t i;
+    lfs_block_t ack;
+    uint32_t *buffer;
+} lfs_free_t;
+
+// The littlefs type
+typedef struct lfs {
+    const struct lfs_config *cfg;
+
+    lfs_block_t root[2];
+    lfs_file_t *files;
+    lfs_dir_t *dirs;
+
+    lfs_cache_t rcache;
+    lfs_cache_t pcache;
+
+    lfs_free_t free;
+    bool deorphaned;
+    bool moving;
+} lfs_t;
+
+
+/// Filesystem functions ///
+
+// Format a block device with the littlefs
+//
+// Requires a littlefs object and config struct. This clobbers the littlefs
+// object, and does not leave the filesystem mounted. The config struct must
+// be zeroed for defaults and backwards compatibility.
+//
+// Returns a negative error code on failure.
+int lfs_format(lfs_t *lfs, const struct lfs_config *config);
+
+// Mounts a littlefs
+//
+// Requires a littlefs object and config struct. Multiple filesystems
+// may be mounted simultaneously with multiple littlefs objects. Both
+// lfs and config must be allocated while mounted. The config struct must
+// be zeroed for defaults and backwards compatibility.
+//
+// Returns a negative error code on failure.
+int lfs_mount(lfs_t *lfs, const struct lfs_config *config);
+
+// Unmounts a littlefs
+//
+// Does nothing besides releasing any allocated resources.
+// Returns a negative error code on failure.
+int lfs_unmount(lfs_t *lfs);
+
+/// General operations ///
+
+// Removes a file or directory
+//
+// If removing a directory, the directory must be empty.
+// Returns a negative error code on failure.
+int lfs_remove(lfs_t *lfs, const char *path);
+
+// Rename or move a file or directory
+//
+// If the destination exists, it must match the source in type.
+// If the destination is a directory, the directory must be empty.
+//
+// Returns a negative error code on failure.
+int lfs_rename(lfs_t *lfs, const char *oldpath, const char *newpath);
+
+// Find info about a file or directory
+//
+// Fills out the info structure, based on the specified file or directory.
+// Returns a negative error code on failure.
+int lfs_stat(lfs_t *lfs, const char *path, struct lfs_info *info);
+
+
+/// File operations ///
+
+// Open a file
+//
+// The mode that the file is opened in is determined by the flags, which
+// are values from the enum lfs_open_flags that are bitwise-ored together.
+//
+// Returns a negative error code on failure.
+int lfs_file_open(lfs_t *lfs, lfs_file_t *file,
+        const char *path, int flags);
+
+// Open a file with extra configuration
+//
+// The mode that the file is opened in is determined by the flags, which
+// are values from the enum lfs_open_flags that are bitwise-ored together.
+//
+// The config struct provides additional config options per file as described
+// above. The config struct must be allocated while the file is open, and the
+// config struct must be zeroed for defaults and backwards compatibility.
+//
+// Returns a negative error code on failure.
+int lfs_file_opencfg(lfs_t *lfs, lfs_file_t *file,
+        const char *path, int flags,
+        const struct lfs_file_config *config);
+
+// Close a file
+//
+// Any pending writes are written out to storage as though
+// sync had been called and releases any allocated resources.
+//
+// Returns a negative error code on failure.
+int lfs_file_close(lfs_t *lfs, lfs_file_t *file);
+
+// Synchronize a file on storage
+//
+// Any pending writes are written out to storage.
+// Returns a negative error code on failure.
+int lfs_file_sync(lfs_t *lfs, lfs_file_t *file);
+
+// Read data from file
+//
+// Takes a buffer and size indicating where to store the read data.
+// Returns the number of bytes read, or a negative error code on failure.
+lfs_ssize_t lfs_file_read(lfs_t *lfs, lfs_file_t *file,
+        void *buffer, lfs_size_t size);
+
+// Write data to file
+//
+// Takes a buffer and size indicating the data to write. The file will not
+// actually be updated on the storage until either sync or close is called.
+//
+// Returns the number of bytes written, or a negative error code on failure.
+lfs_ssize_t lfs_file_write(lfs_t *lfs, lfs_file_t *file,
+        const void *buffer, lfs_size_t size);
+
+// Change the position of the file
+//
+// The change in position is determined by the offset and whence flag.
+// Returns the old position of the file, or a negative error code on failure.
+lfs_soff_t lfs_file_seek(lfs_t *lfs, lfs_file_t *file,
+        lfs_soff_t off, int whence);
+
+// Truncates the size of the file to the specified size
+//
+// Returns a negative error code on failure.
+int lfs_file_truncate(lfs_t *lfs, lfs_file_t *file, lfs_off_t size);
+
+// Return the position of the file
+//
+// Equivalent to lfs_file_seek(lfs, file, 0, LFS_SEEK_CUR)
+// Returns the position of the file, or a negative error code on failure.
+lfs_soff_t lfs_file_tell(lfs_t *lfs, lfs_file_t *file);
+
+// Change the position of the file to the beginning of the file
+//
+// Equivalent to lfs_file_seek(lfs, file, 0, LFS_SEEK_CUR)
+// Returns a negative error code on failure.
+int lfs_file_rewind(lfs_t *lfs, lfs_file_t *file);
+
+// Return the size of the file
+//
+// Similar to lfs_file_seek(lfs, file, 0, LFS_SEEK_END)
+// Returns the size of the file, or a negative error code on failure.
+lfs_soff_t lfs_file_size(lfs_t *lfs, lfs_file_t *file);
+
+
+/// Directory operations ///
+
+// Create a directory
+//
+// Returns a negative error code on failure.
+int lfs_mkdir(lfs_t *lfs, const char *path);
+
+// Open a directory
+//
+// Once open a directory can be used with read to iterate over files.
+// Returns a negative error code on failure.
+int lfs_dir_open(lfs_t *lfs, lfs_dir_t *dir, const char *path);
+
+// Close a directory
+//
+// Releases any allocated resources.
+// Returns a negative error code on failure.
+int lfs_dir_close(lfs_t *lfs, lfs_dir_t *dir);
+
+// Read an entry in the directory
+//
+// Fills out the info structure, based on the specified file or directory.
+// Returns a negative error code on failure.
+int lfs_dir_read(lfs_t *lfs, lfs_dir_t *dir, struct lfs_info *info);
+
+// Change the position of the directory
+//
+// The new off must be a value previous returned from tell and specifies
+// an absolute offset in the directory seek.
+//
+// Returns a negative error code on failure.
+int lfs_dir_seek(lfs_t *lfs, lfs_dir_t *dir, lfs_off_t off);
+
+// Return the position of the directory
+//
+// The returned offset is only meant to be consumed by seek and may not make
+// sense, but does indicate the current position in the directory iteration.
+//
+// Returns the position of the directory, or a negative error code on failure.
+lfs_soff_t lfs_dir_tell(lfs_t *lfs, lfs_dir_t *dir);
+
+// Change the position of the directory to the beginning of the directory
+//
+// Returns a negative error code on failure.
+int lfs_dir_rewind(lfs_t *lfs, lfs_dir_t *dir);
+
+
+/// Miscellaneous littlefs specific operations ///
+
+// Traverse through all blocks in use by the filesystem
+//
+// The provided callback will be called with each block address that is
+// currently in use by the filesystem. This can be used to determine which
+// blocks are in use or how much of the storage is available.
+//
+// Returns a negative error code on failure.
+int lfs_traverse(lfs_t *lfs, int (*cb)(void*, lfs_block_t), void *data);
+
+// Prunes any recoverable errors that may have occured in the filesystem
+//
+// Not needed to be called by user unless an operation is interrupted
+// but the filesystem is still mounted. This is already called on first
+// allocation.
+//
+// Returns a negative error code on failure.
+int lfs_deorphan(lfs_t *lfs);
+
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif

arch/stm32/Adafruit_LittleFS_stm32/src/littlefs/lfs_util.c

@@ -0,0 +1,31 @@
+/*
+ * lfs util functions
+ *
+ * Copyright (c) 2017, Arm Limited. All rights reserved.
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+#include "lfs_util.h"
+
+// Only compile if user does not provide custom config
+#ifndef LFS_CONFIG
+
+
+// Software CRC implementation with small lookup table
+void lfs_crc(uint32_t *restrict crc, const void *buffer, size_t size) {
+    static const uint32_t rtable[16] = {
+        0x00000000, 0x1db71064, 0x3b6e20c8, 0x26d930ac,
+        0x76dc4190, 0x6b6b51f4, 0x4db26158, 0x5005713c,
+        0xedb88320, 0xf00f9344, 0xd6d6a3e8, 0xcb61b38c,
+        0x9b64c2b0, 0x86d3d2d4, 0xa00ae278, 0xbdbdf21c,
+    };
+
+    const uint8_t *data = buffer;
+
+    for (size_t i = 0; i < size; i++) {
+        *crc = (*crc >> 4) ^ rtable[(*crc ^ (data[i] >> 0)) & 0xf];
+        *crc = (*crc >> 4) ^ rtable[(*crc ^ (data[i] >> 4)) & 0xf];
+    }
+}
+
+
+#endif

arch/stm32/Adafruit_LittleFS_stm32/src/littlefs/lfs_util.h

@@ -0,0 +1,197 @@
+/*
+ * lfs utility functions
+ *
+ * Copyright (c) 2017, Arm Limited. All rights reserved.
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+#ifndef LFS_UTIL_H
+#define LFS_UTIL_H
+
+// Users can override lfs_util.h with their own configuration by defining
+// LFS_CONFIG as a header file to include (-DLFS_CONFIG=lfs_config.h).
+//
+// If LFS_CONFIG is used, none of the default utils will be emitted and must be
+// provided by the config file. To start I would suggest copying lfs_util.h and
+// modifying as needed.
+#ifdef LFS_CONFIG
+#define LFS_STRINGIZE(x) LFS_STRINGIZE2(x)
+#define LFS_STRINGIZE2(x) #x
+#include LFS_STRINGIZE(LFS_CONFIG)
+#else
+
+// System includes
+#include <stdint.h>
+#include <stdbool.h>
+#include <string.h>
+
+#ifndef LFS_NO_MALLOC
+#include <stdlib.h>
+#endif
+#ifndef LFS_NO_ASSERT
+#include <assert.h>
+#endif
+
+#if !CFG_DEBUG
+#define LFS_NO_DEBUG
+#define LFS_NO_WARN
+#define LFS_NO_ERROR
+#endif
+
+#if !defined(LFS_NO_DEBUG) || !defined(LFS_NO_WARN) || !defined(LFS_NO_ERROR)
+#include <stdio.h>
+#endif
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+// Macros, may be replaced by system specific wrappers. Arguments to these
+// macros must not have side-effects as the macros can be removed for a smaller
+// code footprint
+
+// Logging functions
+#ifndef LFS_NO_DEBUG
+#define LFS_DEBUG(fmt, ...) \
+    printf("lfs debug:%d: " fmt "\n", __LINE__, __VA_ARGS__)
+#else
+#define LFS_DEBUG(fmt, ...)
+#endif
+
+#ifndef LFS_NO_WARN
+#define LFS_WARN(fmt, ...) \
+    printf("lfs warn:%d: " fmt "\n", __LINE__, __VA_ARGS__)
+#else
+#define LFS_WARN(fmt, ...)
+#endif
+
+#ifndef LFS_NO_ERROR
+#define LFS_ERROR(fmt, ...) \
+    printf("lfs error:%d: " fmt "\n", __LINE__, __VA_ARGS__)
+#else
+#define LFS_ERROR(fmt, ...)
+#endif
+
+// Runtime assertions
+#ifndef LFS_NO_ASSERT
+#define LFS_ASSERT(test) assert(test)
+#else
+#define LFS_ASSERT(test)
+#endif
+
+
+// Builtin functions, these may be replaced by more efficient
+// toolchain-specific implementations. LFS_NO_INTRINSICS falls back to a more
+// expensive basic C implementation for debugging purposes
+
+// Min/max functions for unsigned 32-bit numbers
+static inline uint32_t lfs_max(uint32_t a, uint32_t b) {
+    return (a > b) ? a : b;
+}
+
+static inline uint32_t lfs_min(uint32_t a, uint32_t b) {
+    return (a < b) ? a : b;
+}
+
+// Find the next smallest power of 2 less than or equal to a
+static inline uint32_t lfs_npw2(uint32_t a) {
+#if !defined(LFS_NO_INTRINSICS) && (defined(__GNUC__) || defined(__CC_ARM))
+    return 32 - __builtin_clz(a-1);
+#else
+    uint32_t r = 0;
+    uint32_t s;
+    a -= 1;
+    s = (a > 0xffff) << 4; a >>= s; r |= s;
+    s = (a > 0xff  ) << 3; a >>= s; r |= s;
+    s = (a > 0xf   ) << 2; a >>= s; r |= s;
+    s = (a > 0x3   ) << 1; a >>= s; r |= s;
+    return (r | (a >> 1)) + 1;
+#endif
+}
+
+// Count the number of trailing binary zeros in a
+// lfs_ctz(0) may be undefined
+static inline uint32_t lfs_ctz(uint32_t a) {
+#if !defined(LFS_NO_INTRINSICS) && defined(__GNUC__)
+    return __builtin_ctz(a);
+#else
+    return lfs_npw2((a & -a) + 1) - 1;
+#endif
+}
+
+// Count the number of binary ones in a
+static inline uint32_t lfs_popc(uint32_t a) {
+#if !defined(LFS_NO_INTRINSICS) && (defined(__GNUC__) || defined(__CC_ARM))
+    return __builtin_popcount(a);
+#else
+    a = a - ((a >> 1) & 0x55555555);
+    a = (a & 0x33333333) + ((a >> 2) & 0x33333333);
+    return (((a + (a >> 4)) & 0xf0f0f0f) * 0x1010101) >> 24;
+#endif
+}
+
+// Find the sequence comparison of a and b, this is the distance
+// between a and b ignoring overflow
+static inline int lfs_scmp(uint32_t a, uint32_t b) {
+    return (int)(unsigned)(a - b);
+}
+
+// Convert from 32-bit little-endian to native order
+static inline uint32_t lfs_fromle32(uint32_t a) {
+#if !defined(LFS_NO_INTRINSICS) && ( \
+    (defined(  BYTE_ORDER  ) &&   BYTE_ORDER   ==   ORDER_LITTLE_ENDIAN  ) || \
+    (defined(__BYTE_ORDER  ) && __BYTE_ORDER   == __ORDER_LITTLE_ENDIAN  ) || \
+    (defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__))
+    return a;
+#elif !defined(LFS_NO_INTRINSICS) && ( \
+    (defined(  BYTE_ORDER  ) &&   BYTE_ORDER   ==   ORDER_BIG_ENDIAN  ) || \
+    (defined(__BYTE_ORDER  ) && __BYTE_ORDER   == __ORDER_BIG_ENDIAN  ) || \
+    (defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__))
+    return __builtin_bswap32(a);
+#else
+    return (((uint8_t*)&a)[0] <<  0) |
+           (((uint8_t*)&a)[1] <<  8) |
+           (((uint8_t*)&a)[2] << 16) |
+           (((uint8_t*)&a)[3] << 24);
+#endif
+}
+
+// Convert to 32-bit little-endian from native order
+static inline uint32_t lfs_tole32(uint32_t a) {
+    return lfs_fromle32(a);
+}
+
+// Calculate CRC-32 with polynomial = 0x04c11db7
+void lfs_crc(uint32_t *crc, const void *buffer, size_t size);
+
+// Allocate memory, only used if buffers are not provided to littlefs
+static inline void *lfs_malloc(size_t size) {
+#ifndef LFS_NO_MALLOC
+    //extern void *pvPortMalloc( size_t xWantedSize );
+    //return pvPortMalloc(size);
+    return malloc(size);
+#else
+    (void)size;
+    return NULL;
+#endif
+}
+
+// Deallocate memory, only used if buffers are not provided to littlefs
+static inline void lfs_free(void *p) {
+#ifndef LFS_NO_MALLOC
+    //extern void vPortFree( void *pv );
+    //vPortFree(p);
+    free(p);
+#else
+    (void)p;
+#endif
+}
+
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif
+#endif

arch/stm32/build_hex.py

@@ -0,0 +1,10 @@
+Import("env")
+
+# Make custom HEX from ELF
+env.AddPostAction(
+    "$BUILD_DIR/${PROGNAME}.elf",
+    env.VerboseAction(" ".join([
+        "$OBJCOPY", "-O", "ihex", "-R", ".eeprom",
+        '"$BUILD_DIR/${PROGNAME}.elf"', '"$BUILD_DIR/${PROGNAME}.hex"'
+    ]), "Building $BUILD_DIR/${PROGNAME}.hex")
+)

boards/heltec_t114.json

@@ -34,7 +34,8 @@
   ],
   "debug": {
     "jlink_device": "nRF52840_xxAA",
-    "svd_path": "nrf52840.svd"
+    "svd_path": "nrf52840.svd",
+    "openocd_target": "nrf52.cfg"
   },
   "frameworks": [
     "arduino"

boards/nano-g2-ultra.json

@@ -0,0 +1,73 @@
+{
+    "build": {
+        "arduino": {
+            "ldscript": "nrf52840_s140_v6.ld"
+        },
+        "core": "nRF5",
+        "cpu": "cortex-m4",
+        "extra_flags": "-DARDUINO_NRF52840_FEATHER -DNRF52840_XXAA",
+        "f_cpu": "64000000L",
+        "hwids": [
+            [
+                "0x239A",
+                "0x8029"
+            ],
+            [
+                "0x239A",
+                "0x0029"
+            ],
+            [
+                "0x239A",
+                "0x002A"
+            ],
+            [
+                "0x239A",
+                "0x802A"
+            ]
+        ],
+        "usb_product": "BQ nRF52840",
+        "mcu": "nrf52840",
+        "variant": "nano-g2-ultra",
+        "bsp": {
+            "name": "adafruit"
+        },
+        "softdevice": {
+            "sd_flags": "-DS140",
+            "sd_name": "s140",
+            "sd_version": "6.1.1",
+            "sd_fwid": "0x00B6"
+        },
+        "bootloader": {
+            "settings_addr": "0xFF000"
+        }
+    },
+    "connectivity": [
+        "bluetooth"
+    ],
+    "debug": {
+        "jlink_device": "nRF52840_xxAA",
+        "svd_path": "nrf52840.svd",
+        "openocd_target": "nrf52.cfg"
+    },
+    "frameworks": [
+        "arduino"
+    ],
+    "name": "BQ nRF52840",
+    "upload": {
+        "maximum_ram_size": 248832,
+        "maximum_size": 815104,
+        "speed": 115200,
+        "protocol": "nrfutil",
+        "protocols": [
+            "jlink",
+            "nrfjprog",
+            "nrfutil",
+            "stlink"
+        ],
+        "use_1200bps_touch": true,
+        "require_upload_port": true,
+        "wait_for_upload_port": true
+    },
+    "url": "https://wiki.uniteng.com/en/meshtastic/nano-g2-ultra",
+    "vendor": "BQ Consulting"
+}

boards/promicro_nrf52840.json

@@ -8,7 +8,7 @@
       "extra_flags": "-DARDUINO_NRF52840_FEATHER -DNRF52840_XXAA",
       "f_cpu": "64000000L",
       "hwids": [
-        [ 
+        [
           "0x239A",
           "0x00B3"
         ],
@@ -51,7 +51,8 @@
     ],
     "debug": {
       "jlink_device": "nRF52840_xxAA",
-      "svd_path": "nrf52840.svd"
+      "svd_path": "nrf52840.svd",
+      "openocd_target": "nrf52.cfg"
     },
     "frameworks": [
       "arduino",

boards/rak3172.json

@@ -0,0 +1,33 @@
+{
+  "build": {
+    "arduino": {
+      "variant_h": "variant_RAK3172_MODULE.h"
+    },
+    "core": "stm32",
+    "cpu": "cortex-m4",
+    "extra_flags": "-DSTM32WL -DSTM32WLxx -DSTM32WLE5xx",
+    "framework_extra_flags": {
+      "arduino": "-DUSE_CM4_STARTUP_FILE -DARDUINO_RAK3172_MODULE"
+    },
+    "f_cpu": "48000000L",
+    "mcu": "stm32wle5ccu",
+    "product_line": "STM32WLE5xx",
+    "variant": "STM32WLxx/WL54CCU_WL55CCU_WLE4C(8-B-C)U_WLE5C(8-B-C)U"
+  },
+  "debug": {
+    "default_tools": ["stlink"],
+    "jlink_device": "STM32WLE5CC",
+    "openocd_target": "stm32wlx",
+    "svd_path": "STM32WLE5_CM4.svd"
+  },
+  "frameworks": ["arduino"],
+  "name": "BB-STM32WL",
+  "upload": {
+    "maximum_ram_size": 65536,
+    "maximum_size": 262144,
+    "protocol": "stlink",
+    "protocols": ["stlink", "jlink"]
+  },
+  "url": "https://store.rakwireless.com/products/wisduo-lpwan-module-rak3172",
+  "vendor": "RAK"
+}

boards/seeed-xiao-afruitnrf52-nrf52840.json

@@ -0,0 +1,61 @@
+{
+  "build": {
+    "arduino": {
+      "ldscript": "nrf52840_s140_v7.ld"
+    },
+    "core": "nRF5",
+    "cpu": "cortex-m4",
+    "extra_flags": "-DARDUINO_Seeed_XIAO_nRF52840 -DNRF52840_XXAA -DSEEED_XIAO_NRF52840 ",
+    "f_cpu": "64000000L",
+    "hwids": [
+      [ "0x2886", "0x8044" ],
+      [ "0x2886", "0x0044" ]
+    ],
+    "mcu": "nrf52840",
+    "variant": "Seeed_XIAO_nRF52840",
+    "softdevice": {
+      "sd_flags": "-DS140",
+      "sd_name": "s140",
+      "sd_version": "7.3.0",
+      "sd_fwid": "0x0123"
+    },
+    "bsp": {
+      "name": "adafruit"
+    },
+    "bootloader": {
+      "settings_addr": "0xFF000"
+    },
+    "usb_product": "XIAO nRF52840"
+  },
+  "connectivity": [
+    "bluetooth"
+  ],
+  "debug": {
+    "jlink_device": "nRF52840_xxAA",
+    "openocd_target": "nrf52.cfg",
+    "svd_path": "nrf52840.svd"
+  },
+  "frameworks": [
+    "arduino"
+  ],
+  "name": "Seeed Studio XIAO nRF52840",
+  "upload": {
+    "maximum_ram_size": 237568,
+    "maximum_size": 811008,
+    "protocol": "nrfutil",
+    "speed": 115200,
+    "protocols": [
+      "jlink",
+      "nrfjprog",
+      "nrfutil",
+      "cmsis-dap",
+      "sam-ba",
+      "blackmagic"
+    ],
+    "use_1200bps_touch": true,
+    "require_upload_port": true,
+    "wait_for_upload_port": true
+  },
+  "url": "https://wiki.seeedstudio.com/XIAO_BLE",
+  "vendor": "Seeed Studio"
+}

boards/t-echo.json

@@ -1,32 +1,32 @@
 {
   "build": {
     "arduino": {
-    "ldscript": "nrf52840_s140_v6.ld"
+      "ldscript": "nrf52840_s140_v6.ld"
     },
     "core": "nRF5",
     "cpu": "cortex-m4",
     "extra_flags": "-DARDUINO_NRF52840_PCA10056 -DNRF52840_XXAA",
     "f_cpu": "64000000L",
     "hwids": [
-    [
-      "0x239A",
-      "0x8029"
-    ]
+      [
+        "0x239A",
+        "0x8029"
+      ]
     ],
     "usb_product": "NRF52 DK",
     "mcu": "nrf52840",
     "variant": "pca10056",
     "bsp": {
-    "name": "adafruit"
+      "name": "adafruit"
     },
     "softdevice": {
-    "sd_flags": "-DS140",
-    "sd_name": "s140",
-    "sd_version": "6.1.1",
-    "sd_fwid": "0x00B6"
+      "sd_flags": "-DS140",
+      "sd_name": "s140",
+      "sd_version": "6.1.1",
+      "sd_fwid": "0x00B6"
     },
     "bootloader": {
-    "settings_addr": "0xFF000"
+      "settings_addr": "0xFF000"
     }
   },
   "connectivity": [
@@ -35,9 +35,10 @@
   "debug": {
     "jlink_device": "nRF52840_xxAA",
     "onboard_tools": [
-    "jlink"
+      "jlink"
     ],
-    "svd_path": "nrf52840.svd"
+    "svd_path": "nrf52840.svd",
+    "openocd_target": "nrf52.cfg"
   },
   "frameworks": [
     "arduino"
@@ -50,13 +51,13 @@
     "speed": 115200,
     "protocol": "jlink",
     "protocols": [
-    "jlink",
-    "nrfjprog",
-    "stlink",
-    "cmsis-dap",
-    "blackmagic"
+      "jlink",
+      "nrfjprog",
+      "stlink",
+      "cmsis-dap",
+      "blackmagic"
     ]
   },
   "url": "https://os.mbed.com/platforms/Nordic-nRF52840-DK/",
   "vendor": "Nordic"
-  }
+}

boards/t_beams3_supreme.json

@@ -0,0 +1,51 @@
+{
+    "build": {
+      "arduino":{
+        "ldscript": "esp32s3_out.ld",
+        "partitions": "default.csv",
+        "memory_type": "qio_qspi"
+      },
+      "core": "esp32",
+      "extra_flags": [
+        "-DARDUINO_USB_MODE=1",
+        "-DARDUINO_USB_CDC_ON_BOOT=1",
+        "-DARDUINO_RUNNING_CORE=1",
+        "-DARDUINO_EVENT_RUNNING_CORE=1"
+      ],
+      "f_cpu": "240000000L",
+      "f_flash": "80000000L",
+      "flash_mode": "qio",
+      "hwids": [
+        [
+          "0x303A",
+          "0x1001"
+        ]
+      ],
+      "mcu": "esp32s3",
+      "variant": "esp32s3"
+    },
+    "connectivity": [
+      "wifi"
+    ],
+    "debug": {
+      "default_tool": "esp-builtin",
+      "onboard_tools": [
+        "esp-builtin"
+      ],
+      "openocd_target": "esp32s3.cfg"
+    },
+    "frameworks": [
+      "arduino",
+      "espidf"
+    ],
+    "name": "LilyGo T-Beam supreme (8MB Flash 8MB PSRAM)",
+    "upload": {
+      "flash_size": "8MB",
+      "maximum_ram_size": 327680,
+      "maximum_size": 8388608,
+      "require_upload_port": true,
+      "speed": 460800
+    },
+    "url": "https://www.lilygo.cc/products/t-beamsupreme-m",
+    "vendor": "LilyGo"
+  }

boards/thinknode_m1.json

@@ -0,0 +1,72 @@
+{
+  "build": {
+    "arduino": {
+      "ldscript": "nrf52840_s140_v6.ld"
+    },
+    "core": "nRF5",
+    "cpu": "cortex-m4",
+    "extra_flags": "-DARDUINO_NRF52840_TTGO_EINK -DNRF52840_XXAA",
+    "f_cpu": "64000000L",
+    "hwids": [
+      [
+        "0x239A",
+        "0x4405"
+      ],
+      [
+        "0x239A",
+        "0x0029"
+      ],
+      [
+        "0x239A",
+        "0x002A"
+      ]
+    ],
+    "usb_product": "elecrow_eink",
+    "mcu": "nrf52840",
+    "variant": "ELECROW-ThinkNode-M1",
+    "bsp": {
+      "name": "adafruit"
+    },
+    "softdevice": {
+      "sd_flags": "-DS140",
+      "sd_name": "s140",
+      "sd_version": "6.1.1",
+      "sd_fwid": "0x00B6"
+    },
+    "bootloader": {
+      "settings_addr": "0xFF000"
+    }
+  },
+  "connectivity": [
+    "bluetooth"
+  ],
+  "debug": {
+    "jlink_device": "nRF52840_xxAA",
+    "onboard_tools": [
+      "jlink"
+    ],
+    "svd_path": "nrf52840.svd",
+    "openocd_target": "nrf52.cfg"
+  },
+  "frameworks": [
+    "arduino"
+  ],
+  "name": "elecrow eink",
+  "upload": {
+    "maximum_ram_size": 248832,
+    "maximum_size": 815104,
+    "speed": 115200,
+    "use_1200bps_touch": true,
+    "require_upload_port": true,
+    "wait_for_upload_port": true,
+    "protocol": "nrfutil",
+    "protocols": [
+      "jlink",
+      "nrfjprog",
+      "nrfutil",
+      "stlink"
+    ]
+  },
+  "url": "https://github.com/Elecrow-RD",
+  "vendor": "ELECROW"
+}

boards/tracker-t1000-e.json

@@ -32,7 +32,8 @@
   "connectivity": ["bluetooth"],
   "debug": {
     "jlink_device": "nRF52840_xxAA",
-    "svd_path": "nrf52840.svd"
+    "svd_path": "nrf52840.svd",
+    "openocd_target": "nrf52.cfg"
   },
   "frameworks": ["arduino"],
   "name": "Seeed T1000-E",

build.sh

@@ -58,7 +58,7 @@ build_firmware() {
   fi
 
   # build .uf2 for nrf52 boards
-  if [[ $1 == *"RAK_4631"* || $1 == *"t1000e"* || $1 == *"t114"* || $1 == *"T-Echo"* || $1 == *"Faketec"* || $1 == *"ProMicro"* ]]; then
+  if [[ -f .pio/build/$1/firmware.zip && -f .pio/build/$1/firmware.hex ]]; then
     python bin/uf2conv/uf2conv.py .pio/build/$1/firmware.hex -c -o .pio/build/$1/firmware.uf2 -f 0xADA52840
   fi
 

default.nix

@@ -0,0 +1,10 @@
+{ pkgs ? import <nixpkgs> {} }:
+let
+in
+  pkgs.mkShell {
+    buildInputs = [
+      pkgs.platformio
+      # optional: needed as a programmer i.e. for esp32
+      pkgs.avrdude
+    ];
+}

docs/faq.md

@@ -1,15 +1,85 @@
-# MeshCore-FAQ
+**MeshCore-FAQ**<!-- omit from toc -->
 A list of frequently-asked questions and answers for MeshCore
 
 The current version of this MeshCore FAQ is at https://github.com/ripplebiz/MeshCore/blob/main/docs/faq.md.  
 This MeshCore FAQ is also mirrored at https://github.com/LitBomb/MeshCore-FAQ and might have newer updates if pull requests on Scott's MeshCore repo are not approved yet.
 
-author: https://github.com/LitBomb
+author: https://github.com/LitBomb<!-- omit from toc -->
 ---
 
-## Q: What is MeshCore?
+- [1. Introduction](#1-introduction)
+  - [1.1. Q: What is MeshCore?](#11-q-what-is-meshcore)
+  - [1.2. Q: What do you need to start using MeshCore?](#12-q-what-do-you-need-to-start-using-meshcore)
+    - [1.2.1. Hardware](#121-hardware)
+    - [1.2.2. Firmware](#122-firmware)
+    - [1.2.3. Companion Radio Firmware](#123-companion-radio-firmware)
+    - [1.2.4. Repeater](#124-repeater)
+    - [1.2.5. Room Server](#125-room-server)
+- [2. Initial Setup](#2-initial-setup)
+  - [2.1. Q: How many devices do I need to start using MeshCore?](#21-q-how-many-devices-do-i-need-to-start-using-meshcore)
+  - [2.2. Q: Does MeshCore cost any money?](#22-q-does-meshcore-cost-any-money)
+  - [2.3. Q: What frequencies are supported by MeshCore?](#23-q-what-frequencies-are-supported-by-meshcore)
+  - [2.4. Q: What is an "advert" in MeshCore?](#24-q-what-is-an-advert-in-meshcore)
+  - [2.5. Q: Is there a hop limit?](#25-q-is-there-a-hop-limit)
+- [3. Server Administration](#3-server-administration)
+  - [3.1. Q: How do you configure a repeater or a room server?](#31-q-how-do-you-configure-a-repeater-or-a-room-server)
+  - [3.2. Q: Do I need to set the location for a repeater?](#32-q-do-i-need-to-set-the-location-for-a-repeater)
+  - [3.3. Q: What is the password to administer a repeater or a room server?](#33-q-what-is-the-password-to-administer-a-repeater-or-a-room-server)
+  - [3.4. Q: What is the password to join a room server?](#34-q-what-is-the-password-to-join-a-room-server)
+- [4. T-Deck Related](#4-t-deck-related)
+  - [4.1. Q: What are the steps to get a T-Deck into DFU (Device Firmware Update) mode?](#41-q-what-are-the-steps-to-get-a-t-deck-into-dfu-device-firmware-update-mode)
+  - [4.2. Q: Why is my T-Deck Plus not getting any satellite lock?](#42-q-why-is-my-t-deck-plus-not-getting-any-satellite-lock)
+  - [4.3. Q: Why is my OG (non-Plus) T-Deck not getting any satellite lock?](#43-q-why-is-my-og-non-plus-t-deck-not-getting-any-satellite-lock)
+  - [4.4. Q: What size of SD card does the T-Deck support?](#44-q-what-size-of-sd-card-does-the-t-deck-support)
+  - [4.5. Q: What is the public key for the default public channel?](#45-q-what-is-the-public-key-for-the-default-public-channel)
+  - [4.6. Q: How do I get maps on T-Deck?](#46-q-how-do-i-get-maps-on-t-deck)
+  - [4.7. Q: Where do the map tiles go?](#47-q-where-do-the-map-tiles-go)
+  - [4.8. Q: How to unlock deeper map zoom and server management features on T-Deck?](#48-q-how-to-unlock-deeper-map-zoom-and-server-management-features-on-t-deck)
+  - [4.9. Q: How to decipher the diagnostics screen on T-Deck?](#49-q-how-to-decipher-the-diagnostics-screen-on-t-deck)
+  - [4.10. Q: The T-Deck sound is too loud?](#410-q-the-t-deck-sound-is-too-loud)
+  - [4.11. Q: Can you customize the sound?](#411-q-can-you-customize-the-sound)
+  - [4.12. Q: What is the 'Import from Clipboard' feature on the t-deck and is there a way to manually add nodes without having to receive adverts?](#412-q-what-is-the-import-from-clipboard-feature-on-the-t-deck-and-is-there-a-way-to-manually-add-nodes-without-having-to-receive-adverts)
+- [5. General](#5-general)
+  - [5.1. Q: What are BW, SF, and CR?](#51-q-what-are-bw-sf-and-cr)
+  - [5.2. Q: Do MeshCore clients repeat?](#52-q-do-meshcore-clients-repeat)
+  - [5.3. Q: What happens when a node learns a route via a mobile repeater, and that repeater is gone?](#53-q-what-happens-when-a-node-learns-a-route-via-a-mobile-repeater-and-that-repeater-is-gone)
+  - [5.4. Q: How does a node discovery a path to its destination and then use it to send messages in the future, instead of flooding every message it sends like Meshtastic?](#54-q-how-does-a-node-discovery-a-path-to-its-destination-and-then-use-it-to-send-messages-in-the-future-instead-of-flooding-every-message-it-sends-like-meshtastic)
+  - [5.5. Q: Do public channels always flood? Do private channels always flood?](#55-q-do-public-channels-always-flood-do-private-channels-always-flood)
+  - [5.6. Q: what is the public key for the default public channel?](#56-q-what-is-the-public-key-for-the-default-public-channel)
+  - [5.7. Q: Is MeshCore open source?](#57-q-is-meshcore-open-source)
+  - [5.8. Q: How can I support MeshCore?](#58-q-how-can-i-support-meshcore)
+  - [5.9. Q: How do I build MeshCore firmware from source?](#59-q-how-do-i-build-meshcore-firmware-from-source)
+  - [5.10. Q: Are there other MeshCore related open source projects?](#510-q-are-there-other-meshcore-related-open-source-projects)
+  - [5.11. Q: Does MeshCore support ATAK](#511-q-does-meshcore-support-atak)
+  - [5.12. Q: How do I add a node to the MeshCore Map](#512-q-how-do-i-add-a-node-to-the-meshcore-map)
+  - [5.13. Q: Can I use a Raspberry Pi to update a MeshCore radio?](#513-q-can-i-use-a-raspberry-pi-to-update-a-meshcore-radio)
+  - [5.14. Q: Are there are projects built around MeshCore?](#514-q-are-there-are-projects-built-around-meshcore)
+    - [5.14.1. meshcoremqtt](#5141-meshcoremqtt)
+    - [5.14.2. MeshCore for Home Assistant](#5142-meshcore-for-home-assistant)
+    - [5.14.3. Python MeshCore](#5143-python-meshcore)
+    - [5.14.4. meshcore-cli](#5144-meshcore-cli)
+    - [5.14.5. meshcore.js](#5145-meshcorejs)
+- [6. Troubleshooting](#6-troubleshooting)
+  - [6.1. Q: My client says another client or a repeater or a room server was last seen many, many days ago.](#61-q-my-client-says-another-client-or-a-repeater-or-a-room-server-was-last-seen-many-many-days-ago)
+  - [6.2. Q: A repeater or a client or a room server I expect to see on my discover list (on T-Deck) or contact list (on a smart device client) are not listed.](#62-q-a-repeater-or-a-client-or-a-room-server-i-expect-to-see-on-my-discover-list-on-t-deck-or-contact-list-on-a-smart-device-client-are-not-listed)
+  - [6.3. Q: How to connect to a repeater via BLE (Bluetooth)?](#63-q-how-to-connect-to-a-repeater-via-ble-bluetooth)
+  - [6.4. Q: I can't connect via Bluetooth, what is the Bluetooth pairing code?](#64-q-i-cant-connect-via-bluetooth-what-is-the-bluetooth-pairing-code)
+  - [6.5. Q: My Heltec V3 keeps disconnecting from my smartphone.  It can't hold a solid Bluetooth connection.](#65-q-my-heltec-v3-keeps-disconnecting-from-my-smartphone--it-cant-hold-a-solid-bluetooth-connection)
+  - [6.6. Q: My RAK/T1000-E/xiao\_nRF52 device seems to be corrupted, how do I wipe it clean to start fresh?](#66-q-my-rakt1000-exiao_nrf52-device-seems-to-be-corrupted-how-do-i-wipe-it-clean-to-start-fresh)
+  - [6.7. Q: WebFlasher fails on Linux with failed to open](#67-q-webflasher-fails-on-linux-with-failed-to-open)
+- [7. Other Questions:](#7-other-questions)
+  - [7.1 Q: How to update nRF (RAK, T114, Seed XIAO) repeater and room server firmware over the air using the new simpler DFU app?](#71-q-how-to-update-nrf-rak-t114-seed-xiao-repeater-and-room-server-firmware-over-the-air-using-the-new-simpler-dfu-app)
+  - [7.2 Q: How to update ESP32-based devices over the air?](#72-q-how-to-update-esp32-based-devices-over-the-air)
+  - [7.3 Q: Is there a way to lower the chance of a failed OTA device firmware update (DFU)?](#73-q-is-there-a-way-to-lower-the-chance-of-a-failed-ota-device-firmware-update-dfu)
+  - [7.4 Q are the MeshCore logo and font available?](#74-q-are-the-meshcore-logo-and-font-available)
 
-**A:** MeshCore is free and open source
+## 1. Introduction
+
+### 1.1. Q: What is MeshCore?
+
+**A:** MeshCore is a multi platform system for enabling secure text based communications utilising LoRa radio hardware. It can be used for Off-Grid Communication, Emergency Response & Disaster Recovery, Outdoor Activities, Tactical Security including law enforcement and private security and also IoT sensor networks. ([source](https://meshcore.co.uk/))
+
+MeshCore is free and open source:
 * MeshCore is the routing and firmware etc, available on GitHub under MIT license
 * There are clients made by the community, such as the web clients, these are free to use, and some are open source too
 * The cross platform mobile app developed by [Liam Cottle](https://liamcottle.net) for Android/iOS/PC etc is free to download and use
@@ -22,27 +92,27 @@ These features are completely optional and aren't needed for the core messaging
 
 Anyone is able to build anything they like on top of MeshCore without paying anything.
 
-## Q: What do you need to start using MeshCore?
+### 1.2. Q: What do you need to start using MeshCore?
 **A:** Everything you need for MeshCore is available at:
  Main web site: [https://meshcore.co.uk/](https://meshcore.co.uk/)
  Firmware Flasher: https://flasher.meshcore.co.uk/
  Phone Client Applications: https://meshcore.co.uk/apps.html
- MeshCore Fimrware Github: https://github.com/ripplebiz/MeshCore
+ MeshCore Fimrware GitHub: https://github.com/ripplebiz/MeshCore
 
  NOTE: Andy Kirby has a very useful [intro video](https://www.youtube.com/watch?v=t1qne8uJBAc) for beginners.
  
 
  You need LoRa hardware devices to run MeshCore firmware as clients or server (repeater and room server).
 
-### Hardware
+#### 1.2.1. Hardware
 To use MeshCore without using a phone as the client interface, you can run MeshCore on a T-Deck or T-Deck Plus. It is a complete off-grid secure communication solution.  
 
 MeshCore is also available on a variety of 868MHz and 915MHz LoRa devices. For example, RAK4631 devices (19003, 19007, 19026), Heltec V3, Xiao S3 WIO, Xiao C3, Heltec T114, Station G2, Seeed Studio T1000-E. More devices will be supported later.
 
-### Firmware
+#### 1.2.2. Firmware
 MeshCore has four firmware types that are not available on other LoRa systems. MeshCore has the following:
 
-#### Companion Radio Firmware
+#### 1.2.3. Companion Radio Firmware
 Companion radios are for connecting to the Android app or web app as a messenger client. There are two different companion radio firmware versions:
 
 1. **BLE Companion**  
@@ -54,19 +124,19 @@ Companion radios are for connecting to the Android app or web app as a messenger
    <https://meshcore.liamcottle.net/#/>  
    <https://client.meshcore.co.uk/tabs/devices>
 
-#### Repeater
+#### 1.2.4. Repeater
 Repeaters are used to extend the range of a MeshCore network. Repeater firmware runs on the same devices that run client firmware. A repeater's job is to forward MeshCore packets to the destination device. It does **not** forward or retransmit every packet it receives, unlike other LoRa mesh systems.  
 
-A repeater can be remotely administered using a T-Deck running the MeshCore firwmware with remote admistration features unlocked, or from a BLE Companion client connected to a smartphone running the MeshCore app.
+A repeater can be remotely administered using a T-Deck running the MeshCore firmware with remote administration features unlocked, or from a BLE Companion client connected to a smartphone running the MeshCore app.
 
-#### Room Server
+#### 1.2.5. Room Server
 A room server is a simple BBS server for sharing posts. T-Deck devices running MeshCore firmware or a BLE Companion client connected to a smartphone running the MeshCore app can connect to a room server. 
 
-room servers store message history on them, and push the stored messages to users.  Room servers allow roaming users to come back later and retrieve message history.  Contrast to channels, messages are either received  when it's sent, or not received and missed if the a room user is out of range.  You can think  of room servers like email servers where you can come back later and get your emails from your mail server 
+Room servers store message history on them and push the stored messages to users.  Room servers allow roaming users to come back later and retrieve message history.  With channels, messages are either received when it's sent, or not received and missed if the channel user is out of range.  Room servers are different and more like email servers where you can come back later and get your emails from your mail server.
 
-A room server can be remotely administered using a T-Deck running the MeshCore firwmware with remote admistration features unlocked, or from a BLE Companion client connected to a smartphone running the MeshCore app.  
+A room server can be remotely administered using a T-Deck running the MeshCore firmware with remote administration features unlocked, or from a BLE Companion client connected to a smartphone running the MeshCore app.  
 
-When a client logs into a room server, the client will receive the previously 16 unseen messages.
+When a client logs into a room server, the client will receive the previously 32 unseen messages.
 
 A room server can also take on the repeater role.  To enable repeater role on a room server, use this command:
 
@@ -74,58 +144,64 @@ A room server can also take on the repeater role.  To enable repeater role on a
 
 ---
 
-## Initial Setup
+## 2. Initial Setup
 
-### Q: How many devices do I need to start using meshcore?
-**A:** If you have one supported device, flash the BLE Companion firmware and use your device as a client.  You can connect to the device using the Android client via bluetooth (iOS client will be available later).  You can start communiating with other MeshCore users near you.
+### 2.1. Q: How many devices do I need to start using MeshCore?
+**A:** If you have one supported device, flash the BLE Companion firmware and use your device as a client.  You can connect to the device using the Android client via Bluetooth (iOS client will be available later).  You can start communicating with other MeshCore users near you.
 
-If you have two supported devices, and there are not many MeshCore users near you, flash both of them to BLE Companion firmware so you can use your devices to communiate with your near-by friends and family.
+If you have two supported devices, and there are not many MeshCore users near you, flash both to BLE Companion firmware so you can use your devices to communicate with your near-by friends and family.
 
-If you have two supported devices, and there are other MeshcCore users near by, you can flash one of your devices with BLE Companion firmware, and flash another supported device to repeater firmware.  Place the repeater high above ground o extend your MeshCore network's reach.
+If you have two supported devices, and there are other MeshcCore users nearby, you can flash one of your devices with BLE Companion firmware and flash another supported device to repeater firmware.  Place the repeater high above ground to extend your MeshCore network's reach.
 
-After you flashed the latest firmware onto your repeater device, keep the device connected to your computer via USB serial, use the console feature on the web flasher and set the frequency for your region or country, so your client can remote administer the rpeater or room server over RF:
+After you flashed the latest firmware onto your repeater device, keep the device connected to your computer via USB serial, use the console feature on the web flasher and set the frequency for your region or country, so your client can remote administer the repeater or room server over RF:
 
 `set freq {frequency}`
 
 The repeater and room server CLI reference is here: https://github.com/ripplebiz/MeshCore/wiki/Repeater-&-Room-Server-CLI-Reference
 
-If you have more supported devices, you can use your additional deivces with the room server firmware.  
+If you have more supported devices, you can use your additional devices with the room server firmware.  
 
-### Q: Does MeshCore cost any money?
+### 2.2. Q: Does MeshCore cost any money?
 
 **A:** All radio firmware versions (e.g. for Heltec V3, RAK, T-1000E, etc) are free and open source developed by Scott at Ripple Radios.  
 
-The native Android and iOS client uses the freemium model and is developed by Liam Cottle, developer of meshtastic map at [meshtastic.liamcottle.net](https://meshtastic.liamcottle.net) on [github ](https://github.com/liamcottle/meshtastic-map)and [reticulum-meshchat on github](https://github.com/liamcottle/reticulum-meshchat). 
+The native Android and iOS client uses the freemium model and is developed by Liam Cottle, developer of meshtastic map at [meshtastic.liamcottle.net](https://meshtastic.liamcottle.net) on [GitHub](https://github.com/liamcottle/meshtastic-map) and [reticulum-meshchat on github](https://github.com/liamcottle/reticulum-meshchat). 
 
 The T-Deck firmware is free to download and most features are available without cost.  To support the firmware developer, you can pay for a registration key to unlock your T-Deck for deeper map zoom and remote server administration over RF using the T-Deck.  You do not need to pay for the registration to use your T-Deck for direct messaging and connecting to repeaters and room servers. 
 
 
-### Q: What frequencies are supported by MeshCore?
+### 2.3. Q: What frequencies are supported by MeshCore?
 **A:** It supports the 868MHz range in the UK/EU and the 915MHz range in New Zealand, Australia, and the USA. Countries and regions in these two frequency ranges are also supported. The firmware and client allow users to set their preferred frequency.  
 - Australia and New Zealand are on **915.8MHz**
 - UK and EU are on **869.525MHz**
 - Canada and USA are on **910.525MHz**
 - For other regions and countries, please check your local LoRa frequency
 
+In UK and EU, 867.5MHz is not allowed to use 250kHz bandwidth and it only allows 2.5% duty cycle for clients.  869.525Mhz allows an airtime of 10%, 250KHz bandwidth, and a higher EIRP, therefore MeshCore nodes can send more often and with more power. That is why this frequency is chosen for UK and EU.  This is also why Meshtastic also uses this frequency.  
+
+[Source]([https://](https://discord.com/channels/826570251612323860/1330643963501351004/1356540643853209641))
+
 the rest of the radio settings are the same for all frequencies:  
-- Spread Factor (SF): 10  
+- Spread Factor (SF): 11  
 - Coding Rate (CR): 5  
 - Bandwidth (BW): 250.00  
 
-### Q: What is an "advert" in MeshCore?
+(Originally MeshCore started with SF 10.  recently (as of late April 2025) the community has advocated SF 11 also a viable option for longer range but a little slower transmission. Currently there are MeshCore meshes with SF 10 and SF 11.  Liam Cottle's smartphone app's presets now recommend SF 10 for Australia and SF 11 for all other regions and countries.  EU and UK has SF 10 and SF 11 presets.  Work with your local meshers on deciding with SF number is best for your use cases.  In the future, there may be bridge nodes that can bridge SF 10 and SF 11 (or even different frequencies) traffic.)
+
+### 2.4. Q: What is an "advert" in MeshCore?
 **A:** 
-Advert means to advertise yourself on the network. In Reticulum terms it would be to announce. In Meshtastic terms it would be the node sending it's node info.
+Advert means to advertise yourself on the network. In Reticulum terms it would be to announce. In Meshtastic terms it would be the node sending its node info.
 
 MeshCore allows you to manually broadcast your name, position and public encryption key, which is also signed to prevent spoofing.  When you click the advert button, it broadcasts that data over LoRa.  MeshCore calls that an Advert. There's two ways to advert, "zero hop" and "flood".
 
 * Zero hop means your advert is broadcasted out to anyone that can hear it, and that's it.
-* Flooded means it's broadcasted out, and then repeated by all the repeaters that hear it.
+* Flooded means it's broadcasted out and then repeated by all the repeaters that hear it.
 
 MeshCore clients only advertise themselves when the user initiates it. A repeater (and room server?) advertises its presence once every 240 minutes. This interval can be configured using the following command:
 
 `set advert.interval {minutes}`
 
-### Q: Is there a hop limit?
+### 2.5. Q: Is there a hop limit?
 
 **A:** Internally the firmware has maximum limit of 64 hops.  In real world settings it will be difficult to get close to the limit due to the environments and timing as packets travel further and further.  We want to hear how far your MeshCore conversations go. 
 
@@ -133,30 +209,43 @@ MeshCore clients only advertise themselves when the user initiates it. A repeate
 ---
 
 
-## Server Administration
+## 3. Server Administration
 
-### Q: How do you configure a repeater or a room server?
-**A:** One of these servers can be administered with one of the options below:
+### 3.1. Q: How do you configure a repeater or a room server?
+
+**A:** - When MeshCore is flashed onto a LoRa device is for the first time, it is necessary to set the server device's frequency to make it utilize the frequency that is legal in your country or region.  
+
+Repeater or room server can be administered with one of the options below:
+  
+- After a repeater or room server firmware is flashed on to a LoRa device, go to <https://config.meshcore.dev> and use the web user interface to connect to the LoRa device via USB serial.  From there you can set the name of the server, its frequency and other related settings, location, passwords etc.
+
+![image](https://github.com/user-attachments/assets/bec28ff3-a7d6-4a1e-8602-cb6b290dd150)
+
+ 
 - Connect the server device using a USB cable to a computer running Chrome on https://flasher.meshcore.co.uk/, then use the `console` feature to connect to the device
-	- this is necessary to set the server device's frequency if it doesn't match the frequency for your local region or country
-- MeshCore smart device clients have the ability to remotely administer servers.
-- A T-Deck running unlocked/registered MeshCore firmware. Remote server administration is enabled through registering your T-Deck with Ripple Radios. It is one of the ways to support MeshCore development. You can register your T-Deck at:  
-  <https://buymeacoffee.com/ripplebiz/e/249834>
 
-### Q: Do I need to set the location for a repeater?
+- Use a MeshCore smartphone clients  to remotely administer servers via LoRa.
+
+- A T-Deck running unlocked/registered MeshCore firmware. Remote server administration is enabled through registering your T-Deck with Ripple Radios. It is one of the ways to support MeshCore development. You can register your T-Deck at:
+
+<https://buymeacoffee.com/ripplebiz/e/249834>
+
+  
+
+### 3.2. Q: Do I need to set the location for a repeater?
 **A:** With location set for a repeater, it can show up on a MeshCore map in the future. Set location with the following commands:
 
 `set lat <GPS Lat> set long <GPS Lon>`
 
 You can get the latitude and longitude from Google Maps by right-clicking the location you are at on the map.
 
-### Q: What is the password to administer a repeater or a room server?
+### 3.3. Q: What is the password to administer a repeater or a room server?
 **A:** The default admin password to a repeater and room server is `password`. Use the following command to change the admin password:
 
 `password {new-password}`
 
 
-### Q: What is the password to join a room server?
+### 3.4. Q: What is the password to join a room server?
 **A:** The default guest password to a room server is `hello`. Use the following command to change the guest password:
 
 `set guest.password {guest-password}`
@@ -164,9 +253,9 @@ You can get the latitude and longitude from Google Maps by right-clicking the lo
 
 ---
 
-## T-Deck Related
+## 4. T-Deck Related
 
-### Q: What are the steps to get a T-Deck into DFU (Device Firmware Update) mode?
+### 4.1. Q: What are the steps to get a T-Deck into DFU (Device Firmware Update) mode?
 **A:**  
 1. Device off  
 2. Connect USB cable to device  
@@ -177,16 +266,31 @@ You can get the latitude and longitude from Google Maps by right-clicking the lo
 7. T-Deck in DFU mode now  
 8. At this point you can begin flashing using <https://flasher.meshcore.co.uk/>
 
-### Q: Why is my T-Deck Plus not getting any satellite lock?
-**A:** For T-Deck Plus, the GPS baud rate should be set to **38400**. Also, a number of T-Deck Plus devices were found to have the GPS module installed upside down, with the GPS antenna facing down instead of up. If your T-Deck Plus still doesn't get any satellite lock after setting the baud rate to 38400, you might need to open up the device to check the GPS orientation.
+### 4.2. Q: Why is my T-Deck Plus not getting any satellite lock?
+**A:** For T-Deck Plus, the GPS baud rate should be set to **38400**. Also, some T-Deck Plus devices were found to have the GPS module installed upside down, with the GPS antenna facing down instead of up. If your T-Deck Plus still doesn't get any satellite lock after setting the baud rate to 38400, you might need to open the device to check the GPS orientation.
 
-### Q: Why is my OG (non-Plus) T-Deck not getting any satellite lock?
+GPS on T-Deck is always enabled.  You can skip the "GPS clock sync" and the T-Deck will continue to try to get a GPS lock.  You can go to the `GPS Info` screen; you should see the `Sentences:` counter increasing if the baud rate is correct.
+
+[Source]([https://](https://discord.com/channels/826570251612323860/1330643963501351004/1356609240302616689))
+
+### 4.3. Q: Why is my OG (non-Plus) T-Deck not getting any satellite lock?
 **A:** The OG (non-Plus) T-Deck doesn't come with a GPS. If you added a GPS to your OG T-Deck, please refer to the manual of your GPS to see what baud rate it requires. Alternatively, you can try to set the baud rate from 9600, 19200, etc., and up to 115200 to see which one works.
 
-### Q: What size of SD card does the T-Deck support?
+### 4.4. Q: What size of SD card does the T-Deck support?
 **A:** Users have had no issues using 16GB or 32GB SD cards. Format the SD card to **FAT32**.
 
-### Q: How do I get maps on T-Deck?
+### 4.5. Q: what is the public key for the default public channel?
+**A:** 
+T-Deck uses the same key the smartphone apps use but in base64 
+`izOH6cXN6mrJ5e26oRXNcg==`
+The third character is the capital letter 'O', not zero `0`
+
+The smartphone app key is in hex:
+` 8b3387e9c5cdea6ac9e5edbaa115cd72`
+
+[Source](https://discord.com/channels/826570251612323860/1330643963501351004/1354194409213792388)
+
+### 4.6. Q: How do I get maps on T-Deck?
 **A:** You need map tiles. You can get pre-downloaded map tiles here (a good way to support development):  
 - <https://buymeacoffee.com/ripplebiz/e/342543> (Europe)  
 - <https://buymeacoffee.com/ripplebiz/e/342542> (US)
@@ -200,28 +304,46 @@ There is also a modified script that adds additional error handling and parallel
 UK map tiles are available separately from Andy Kirby on his discord server:  
 <https://discord.com/channels/826570251612323860/1330643963501351004/1331346597367386224>
 
-### Q: Where do the map tiles go?
+### 4.7. Q: Where do the map tiles go?
 Once you have the tiles downloaded, copy the `\tiles` folder to the root of your T-Deck's SD card.
 
-### Q: How to unlock deeper map zoom and server management features on T-Deck?
+### 4.8. Q: How to unlock deeper map zoom and server management features on T-Deck?
 **A:** You can download, install, and use the T-Deck firmware for free, but it has some features (map zoom, server administration) that are enabled if you purchase an unlock code for \$10 per T-Deck device.  
 Unlock page: <https://buymeacoffee.com/ripplebiz/e/249834>
 
+### 4.9. Q: How to decipher the diagnostics screen on T-Deck?
 
-### Q: The T-Deck sound is too loud?
-### Q: Can you customize the sound?
+**A: ** Space is tight on T-Deck's screen, so the information is a bit cryptic.  The format is :
+`{hops} l:{packet-length}({payload-len}) t:{packet-type} snr:{n} rssi:{n}`
+
+See here for packet-type: [https://github.com/ripplebiz/MeshCore/blob/main/src/Packet.h#L19](https://github.com/ripplebiz/MeshCore/blob/main/src/Packet.h#L19 "https://github.com/ripplebiz/MeshCore/blob/main/src/Packet.h#L19")
+ 
+
+    #define PAYLOAD_TYPE_REQ 0x00 // request (prefixed with dest/src hashes, MAC) (enc data: timestamp, blob) 
+    #define PAYLOAD_TYPE_RESPONSE 0x01 // response to REQ or ANON_REQ (prefixed with dest/src hashes, MAC) (enc data: timestamp, blob) 
+    #define PAYLOAD_TYPE_TXT_MSG 0x02 // a plain text message (prefixed with dest/src hashes, MAC) (enc data: timestamp, text) 
+    #define PAYLOAD_TYPE_ACK 0x03 // a simple ack #define PAYLOAD_TYPE_ADVERT 0x04 // a node advertising its Identity 
+    #define PAYLOAD_TYPE_GRP_TXT 0x05 // an (unverified) group text message (prefixed with channel hash, MAC) (enc data: timestamp, "name: msg") 
+    #define PAYLOAD_TYPE_GRP_DATA 0x06 // an (unverified) group datagram (prefixed with channel hash, MAC) (enc data: timestamp, blob) 
+    #define PAYLOAD_TYPE_ANON_REQ 0x07 // generic request (prefixed with dest_hash, ephemeral pub_key, MAC) (enc data: ...) 
+    #define PAYLOAD_TYPE_PATH 0x08 // returned path (prefixed with dest/src hashes, MAC) (enc data: path, extra)
+
+[Source](https://discord.com/channels/1343693475589263471/1343693475589263474/1350611321040932966)
+
+### 4.10. Q: The T-Deck sound is too loud?
+### 4.11. Q: Can you customize the sound?
 
 **A:** You can customise the sounds on the T-Deck, just by placing `.mp3` files onto the `root` dir of the SD card. `startup.mp3`, `alert.mp3` and `new-advert.mp3`
 
-### Q: What is the 'Import from Clipboard' feature on the t-deck and is there a way to manually add nodes without having to receive adverts?
+### 4.12. Q: What is the 'Import from Clipboard' feature on the t-deck and is there a way to manually add nodes without having to receive adverts?
 
 **A:** 'Import from Clipboard' is for importing a contact via a file named 'clipboard.txt' on the SD card. The opposite, is in the Identity screen, the 'Card to Clipboard' menu, which writes to 'clipboard.txt' so you can share yourself (call these 'biz cards', that start with "meshcore://...")
 
 ---
 
-## General
+## 5. General
 
-### Q: What are BW, SF, and CR?
+### 5.1. Q: What are BW, SF, and CR?
 
 **A:** 
 
@@ -234,142 +356,299 @@ Making the bandwidth 2x wider (from BW125 to BW250) allows you to send 2x more b
 
 Lowering the spreading factor makes it more difficult for the gateway to receive a transmission, as it will be more sensitive to noise. You could compare this to two people taking in a noisy place (a bar for example). If you’re far from each other, you have to talk slow (SF10), but if you’re close, you can talk faster (SF7)
 
-So it's balancing act between speed of the transmission and resistance to noise.
+So, it's balancing act between speed of the transmission and resistance to noise.
 things network is mainly focused on LoRaWAN, but the LoRa low-level stuff still checks out for any LoRa project
 
-### Q: What happens when a node learns a route via a mobile repeater, and that repeater is gone?
+### 5.2. Q: Do MeshCore clients repeat?
+**A:** No, MeshCore clients do not repeat.  This is the core of MeshCore's messaging-first design.  This is to avoid devices flooding the air ware and create endless collisions, so messages sent aren't received.  
+In MeshCore, only repeaters and room server with `set repeat on` repeat.  
+
+### 5.3. Q: What happens when a node learns a route via a mobile repeater, and that repeater is gone?
 
 **A:** If you used to reach a node through a repeater and the repeater is no longer reachable, the client will send the message using the existing (but now broken) known path, the message will fail after 3 retries, and the app will reset the path and send the message as flood on the last retry by default.  This can be turned off in settings.  If the destination is reachable directly or through another repeater, the new path will be used going forward.  Or you can set the path manually if you know a specific repeater to use to reach that destination.
 
 In the case if users are moving around frequently, and the paths are breaking, they just see the phone client retries and revert to flood to attempt to reestablish a path. 
 
+### 5.4. Q: How does a node discovery a path to its destination and then use it to send messages in the future, instead of flooding every message it sends like Meshtastic?
 
-### Q: Is MeshCore open source?
+Routes are stored in sender's contact list.  When you send a message the first time, the message first gets to your destination by flood routing. When your destination node gets the message, it will send back a delivery report to the sender with all repeaters that the original message went through. This delivery report is flood-routed back to you the sender and is a basis for future direct path. When you send the next message, the path will get embedded into the packet and be evaluated by repeaters. If the hop and address of the repeater matches, it will retransmit the message, otherwise it will not retransmit, hence minimizing utilization.
+
+[Source](https://discord.com/channels/826570251612323860/1330643963501351004/1351279141630119996)
+
+### 5.5. Q: Do public channels always flood? Do private channels always flood?
+
+**A:** Yes, group channels are A to B, so there is no defined path.  They have to flood.  Repeaters can however deny flood traffic up to some hop limit, with the `set flood.max` CLI command. Administrators of repeaters get to set the rules of their repeaters.
+
+[Source](https://discord.com/channels/1343693475589263471/1343693475589263474/1350023009527664672)
+
+
+### 5.6. Q: what is the public key for the default public channel?
+**A:** The smartphone app key is in hex:
+` 8b3387e9c5cdea6ac9e5edbaa115cd72`
+
+T-Deck uses the same key but in base64 
+`izOH6cXN6mrJ5e26oRXNcg==`
+The third character is the capital letter 'O', not zero `0`
+[Source](https://discord.com/channels/826570251612323860/1330643963501351004/1354194409213792388)
+
+### 5.7. Q: Is MeshCore open source?
 **A:** Most of the firmware is freely available. Everything is open source except the T-Deck firmware and Liam's native mobile apps.  
 - Firmware repo: <https://github.com/ripplebiz/MeshCore>  
 
-### Q: How can I support MeshCore?
+### 5.8. Q: How can I support MeshCore?
 **A:** Provide your honest feedback on GitHub and on AndyKirby's Discord server <http://discord.com/invite/H62Re4DCeD>. Spread the word of MeshCore to your friends and communities; help them get started with MeshCore. Support Scott's MeshCore development at <https://buymeacoffee.com/ripplebiz>.
 
 Support Liam Cottle's smartphone client development by unlocking the server administration wait gate with in-app purchase
 
 Support Rastislav Vysoky (recrof)'s flasher web site and the map web site development through [PayPal](https://www.paypal.com/donate/?business=DREHF5HM265ES&no_recurring=0&item_name=If+you+enjoy+my+work%2C+you+can+support+me+here%3A&currency_code=EUR) or [Revolut](https://revolut.me/recrof)
 
-### Q: How do I build MeshCore firmware from source?
+### 5.9. Q: How do I build MeshCore firmware from source?
 **A:** See instructions here:  
-<https://discord.com/channels/826570251612323860/1330643963501351004/1342120825251299388>  
+https://discord.com/channels/826570251612323860/1330643963501351004/1341826372120608769
+
+Build instructions for MeshCore:
+
+For Windows, first install WSL and Python+pip via: https://plainenglish.io/blog/setting-up-python-on-windows-subsystem-for-linux-wsl-26510f1b2d80
+
+(Linux, Windows+WSL) In the terminal/shell:
+```
+sudo apt update
+sudo apt install libpython3-dev
+sudo apt install python3-venv
+```
+Mac: python3 should be already installed.
+
+Then it should be the same for all platforms:
+```
+python3 -m venv meshcore
+cd meshcore && source bin/activate
+pip install -U platformio
+git clone https://github.com/ripplebiz/MeshCore.git 
+cd MeshCore
+```
+open platformio.ini and in `[arduino_base]` edit the `LORA_FREQ=867.5`
+save, then run:
+```
+pio run -e RAK_4631_Repeater
+```
+then you'll find `firmware.zip` in `.pio/build/RAK_4631_Repeater`
 
 Andy also has a video on how to build using VS Code:  
 *How to build and flash Meshcore repeater firmware | Heltec V3*  
 <https://www.youtube.com/watch?v=WJvg6dt13hk> *(Link referenced in the Discord post)*
 
-### Q: Are there other MeshCore related open source projects?
+### 5.10. Q: Are there other MeshCore related open source projects?
 
 **A:** [Liam Cottle](https://liamcottle.net)'s MeshCore web client and MeshCore Javascript libary are open source under MIT license.
 
 Web client: https://github.com/liamcottle/meshcore-web
 Javascript: https://github.com/liamcottle/meshcore.js
 
-### Q: Does MeshCore support ATAK
+### 5.11. Q: Does MeshCore support ATAK
 **A:** ATAK is not currently on MeshCore's roadmap.
 
-### Q: How do I add a node to the [MeshCore Map]([url](https://meshcore.co.uk/map.html))
+Meshcore would not be best suited to ATAK  because MeshCore:
+clients do not repeat and therefore you would need a network of repeaters in place
+will not have a stable path where all clients are constantly moving between repeaters
+
+MeshCore clients would need to reset path constantly and flood traffic across the network which could lead to lots of collisions with something as chatty as ATAK. 
+
+This could change in the future if MeshCore develops a client firmware that repeats.
+[Source](https://discord.com/channels/826570251612323860/1330643963501351004/1354780032140054659)
+
+### 5.12. Q: How do I add a node to the [MeshCore Map]([url](https://meshcore.co.uk/map.html))
 **A:** From the smartphone app, connect to a BLE Companion radio
 - To add the BLE Companion radio your smartphone is connected to to the map, tap the `advert` icon, then tap `Advert (To Clipboard)`.  
 - To add a Repeater or Room Server to the map, tap the 3 dots next to the Repeater or Room Server you want to add to the map, then tap `Share (To Clipboard)`.  
 - Go to the [MeshCore Map web site]([url](https://meshcore.co.uk/map.html)), tap the plus sign on the lower right corner and paste in the meshcore://... blob, then tap `Add Node`
-    
+
+### 5.13. Q: Can I use a Raspberry Pi to update a MeshCore radio?
+** A:** Yes.
+Below are the instructions to flash firmware onto a supported LoRa device using a Raspberry Pi over USB serial.
+
+> Instructions for nRF devices like RAK, T1000-E, T114 are immediately after the ESP instructions
+
+For ESP-based devices (e.g. Heltec V3) you need:
+- Download firmware file from flasher.meshcore.co.uk
+    - Go to the web site on a browser, find the section that has the firmware up need
+    - Click the Download button, right click on the file you need, for example,
+        - `Heltec_V3_companion_radio_ble-v1.7.1-165fb33.bin` 
+            - Non-merged bin keeps the existing Bluetooth pairing database
+        - `Heltec_v3_companion_radio_usb-v1.7.1-165fb33-merged.bin`
+            - Merged bin overwrites everything including the bootloader, existing Bluetooth pairing database, but keeps configurations.
+        - Right click on the file name and copy the link and note it for later use here is an example: `https://flasher.meshcore.dev/releases/download/companion-v1.7.1/Heltec_v3_companion_radio_ble-v1.7.1-165fb33.bin`
+        - Run:
+            - `wget https://flasher.meshcore.dev/releases/download/companion-v1.7.1/Heltec_v3_companion_radio_ble-v1.7.1-165fb33.bin` to download the firmware file for your device type. or the version you need  - USB, BLE, Repeater, Room Server, merged bin or non-merged bin
+            - If the above wget command only downloads a very small file (10K bytes instead of more than 100K byte, use this command instead:
+                - `wget --user-agent="Mozilla/5.0" --content-disposition "https://flasher.meshcore.dev/releases/download/companion-v1.7.1/Heltec_v3_companion_radio_usb-v1.7.1-165fb33.bin"`
+    - Confirm the `ttyXXXX` device path on your Raspberry Pi:
+        - Go to `/dev` directory, run ls command to find confirm your device path
+        - They are usually `/dev/ttyUSB0` for ESP devices
+        - For ESP-based devices, install esptool from the shell:
+            - `pip install esptool --break-system-packages`
+    - To flash, use the following command:
+        - For non-merged bin:
+            - `esptool.py -p /dev/ttyUSB0 --chip esp32-s3 write_flash 0x10000 <non-merged_firmware>.bin`
+        - For merged bin:
+            - `esptool.py -p /dev/ttyUSB0 --chip esp32-s3 write_flash 0x00000 <merged_firmware>.bin`
+	
+
+
+**Instructions for nRF devices:**
+
+For nRF devices (e.g. RAK, Heltec T114) you need the following:
+- Download firmware file from flasher.meshcore.co.uk
+    - Go to the web site on a browser, find the section that has the firmware up need
+    - You need the ZIP version for the adafruit flash tool (below)
+    - Click the Download button, right click on the ZIP file, for example:
+        - `RAK_4631_companion_radio_ble-v1.7.1-165fb33.zip`
+        - Right click on the file name and copy the link and note it for later use here is an example: `https://flasher.meshcore.dev/releases/download/companion-v1.7.1/RAK_4631_companion_radio_ble-v1.7.1-165fb33.zip`
+        - Run:
+        - `wget https://flasher.meshcore.dev/releases/download/companion-v1.7.1/RAK_4631_companion_radio_ble-v1.7.1-165fb33.zip` to download the firmware file for your device type. or the version you need  - USB, BLE, Repeater, Room Server, ZIP file only
+    - Confirm the `ttyXXXX` device path on your Raspberry Pi:
+        - Go to `/dev` directory, run ls command to find confirm your device path
+        - They are usually `/dev/ttyACM0` for nRF devices
+    - For nRF-based devices, install adafruit-nrfutil
+        - `pip install adafruit-nrfutil --break-system-packages`
+        - Use this command to flash the nRF device:
+            - `adafruit-nrfutil --verbose dfu serial --package RAK_4631_companion_radio_usb-v1.7.1-165fb33.zip -p /dev/ttyACM0 -b 115200 --singlebank --touch 1200`
+		
+		
+To manage a repeater or room server connected to a Pi over USB serial using shell commands, you need to install `picocom`.  To install `picocom`, run the following command:
+- `sudo apt install picocom`
+
+To start managing your USB serial-connected device using picocom, use the following command:
+    - `picocom -b 115200 /dev/ttyUSB0 --imap lfcrlf`
+
+From here, reference repeater and room server command line commands on MeshCore github wiki here: 
+    - https://github.com/ripplebiz/MeshCore/wiki/Repeater-&-Room-Server-CLI-Reference
+
+  
+### 5.14. Q: Are there are projects built around MeshCore?
+
+**A:** Yes.  See the following:
+
+#### 5.14.1. meshcoremqtt
+A Python script to send meshore debug and packet capture data to MQTT for analysis
+https://github.com/Andrew-a-g/meshcoretomqtt
+
+#### 5.14.2. MeshCore for Home Assistant
+A custom Home Assistant integration for MeshCore mesh radio nodes. It allows you to monitor and control MeshCore nodes via USB, BLE, or TCP connections.
+https://github.com/awolden/meshcore-ha
+
+#### 5.14.3. Python MeshCore
+Bindings to access your MeshCore companion radio nodes in python.
+https://github.com/fdlamotte/meshcore_py
+
+#### 5.14.4. meshcore-cli  
+CLI interface to MeshCore companion radio over BLE, TCP, or serial.  Uses Pyton MeshCore above.
+ https://github.com/fdlamotte/meshcore-cli
+
+#### 5.14.5. meshcore.js
+A JavaScript library for interacting with a MeshCore device running the companion radio firmware
+https://github.com/liamcottle/meshcore.js
+
 ---
 
-## Troubleshooting
+## 6. Troubleshooting
 
-### Q: My client says another client or a repeater or a room server was last seen many, many days ago.
-### Q: A repeater or a client or a room server I expect to see on my discover list (on T-Deck) or contact list (on a smart device client) are not listed.
+### 6.1. Q: My client says another client or a repeater or a room server was last seen many, many days ago.
+### 6.2. Q: A repeater or a client or a room server I expect to see on my discover list (on T-Deck) or contact list (on a smart device client) are not listed.
 **A:**  
 - If your client is a T-Deck, it may not have its time set (no GPS installed, no GPS lock, or wrong GPS baud rate).  
 - If you are using the Android or iOS client, the other client, repeater, or room server may have the wrong time.  
 
 You can get the epoch time on <https://www.epochconverter.com/> and use it to set your T-Deck clock. For a repeater and room server, the admin can use a T-Deck to remotely set their clock (clock sync), or use the `time` command in the USB serial console with the server device connected.
 
-### Q: How to connect to a repeater via BLE (bluetooth)?
-**A:** You can't connect to a device running repeater firmware  via bluetooth.  Devices running the BLE companion firmware you can connect to it via bluetooth using the android app
+### 6.3. Q: How to connect to a repeater via BLE (Bluetooth)?
+**A:** You can't connect to a device running repeater firmware  via Bluetooth.  Devices running the BLE companion firmware you can connect to it via Bluetooth using the android app
 
-### Q: I can't connect via bluetooth, what is the bluetooth pairing code?
+### 6.4. Q: I can't connect via Bluetooth, what is the Bluetooth pairing code?
 
-**A:** the default bluetooth pairing code is `123456`
+**A:** the default Bluetooth pairing code is `123456`
 
-### Q: My Heltec V3 keeps disconnecting from my smartphone.  It can't hold a solid Bluetooth connection.
+### 6.5. Q: My Heltec V3 keeps disconnecting from my smartphone.  It can't hold a solid Bluetooth connection.
 
-**A:** Heltec V3 has a very small coil antenna on its PCB for WiFi and Bluetooth connectivty.  It has a very short range, only a few feet.  It is possible to remove the coil antenna  and replace it with a 31mm wire.  The BT range is much improved with the modification.
+**A:** Heltec V3 has a very small coil antenna on its PCB for Wi-Fi and Bluetooth connectivity.  It has a very short range, only a few feet.  It is possible to remove the coil antenna  and replace it with a 31mm wire.  The BT range is much improved with the modification.
+
+### 6.6. Q: My RAK/T1000-E/xiao_nRF52 device seems to be corrupted, how do I wipe it clean to start fresh?
+
+**A:** 
+1. Connect USB-C cable to your device, per your device's instruction, get it to flash mode:
+    - For RAK, click the reset button **TWICE**
+    - For T1000-e, quickly disconnect and reconnect the magnetic side of the cable from the device **TWICE**
+    - For Heltec T114, click the reset button **TWICE** (the bottom button)
+    - For Xiao nRF52, click the reset button once.  If that doesn't work, quickly double click the reset button twice.  If that doesn't work, disconnection the board from your PC and reconnect again ([seeed studio wiki](https://wiki.seeedstudio.com/XIAO_BLE/#access-the-swd-pins-for-debugging-and-reflashing-bootloader))
+5. A new folder will appear on your computer's desktop
+6. Download the `flash_erase*.uf2` file for your device on flasher.meshcore.co.uk 
+    - RAK WisBlock and Heltec T114: `Flash_erase-nRF32_softdevice_v6.uf2`
+    - Seeed Studio Xiao nRF52 WIO: `Flash_erase-nRF52_softdevice_v7.uf2`
+8. drag and drop the uf2 file for your device to the root of the new folder
+9. Wait for the copy to complete.  You might get an error dialog, you can ignore it
+10. Go to https://flasher.meshcore.co.uk/, click `Console` and select the serial port for your connected device 
+11. In the console, press enter.  Your flash should now be erased
+12. You may now flash the latest MeshCore firmware onto your device
+
+Separately, starting in firmware version 1.7.0, there is a CLI Rescue mode.  If your device has a user button (e.g. some RAK, T114), you can activate the rescue mode by hold down the user button of the device within 8 seconds of boot.  Then you can use the 'Console' on flasher.meshcore.co.uk 
+
+
+### 6.7. Q: WebFlasher fails on Linux with failed to open
+
+**A:** If the usb port doesn't have the right ownership for this task, the process fails with the following error:
+`NetworkError: Failed to execute 'open' on 'SerialPort': Failed to open serial port.`
+
+Allow the browser user on it:
+`# setfacl -m u:YOUR_USER_HERE:rw /dev/ttyUSB0`
 
 ---
-## Other Questions:
-### Q: How to  Update repeater and room server firmware over the air?
+## 7. Other Questions:
 
-**A:** Only nRF-based RAK4631 and Heltec T114 OTA firmware update are verified using nRF smartphone app.  Lilygo T-Echo doesn't work currently.
-You can update repeater and room server firmware with a bluetooth connection between your smartphone and your LoRa radio using the nRF app.
+### 7.1 Q: How to update nRF (RAK, T114, Seed XIAO) repeater and room server firmware over the air using the new simpler DFU app?
 
-1. Download the ZIP file for the specific node from the web flasher to your smartphone
-2. On the phone client, log on to the repeater as administrator (default password is `password`) to issue the `start ota`command to the repeater or room server to get the device into OTA DFU mode
-   
-![image](https://github.com/user-attachments/assets/889bb81b-7214-4a1c-955a-396b5a05d8ad)
-	1. `start ota` can be initiated from USB serial console on the web flasher page or a T-Deck
-4. On the smartphone, download and run the nRF app and scan for Bluetooth devices
-5. Connect to the repeater/room server node you want to update
-	1. nRF app is available on both Android and iOS
+**A:** The steps below work on both Android and iOS as nRF has made both apps' user interface the same on both platforms:
 
-**Android continues after the iOS section:**
-
-**iOS continues here:**
-5. Once connected successfully, a `DFU` icon ![Pasted image 20250309173039](https://github.com/user-attachments/assets/af7a9f78-8739-4946-b734-02bade9c8e71)
- appears in the top right corner of the app![Pasted image 20250309171919](https://github.com/user-attachments/assets/08007ec8-4924-49c1-989f-ca2611e78793)
-
-6. Scroll down to change the `PRN(s)` number:
-
-![Pasted image 20250309190158](https://github.com/user-attachments/assets/11f69cdd-12f3-4696-a6fc-14a78c85fe32)
-
-- For the T114, change the number of packets `(PRN(s)` to 8
-- For RAK, it can be 10, but it also works on 8.
-
-7. Click the `DFU` icon ![Pasted image 20250309173039](https://github.com/user-attachments/assets/af7a9f78-8739-4946-b734-02bade9c8e71), select the type of file to upload (choose ZIP), then select the ZIP file that was downloaded earlier  from the web flasher
-8. The upload process will start now. If everything goes well, the node resets and is flashed successfully.
-![Pasted image 20250309190342](https://github.com/user-attachments/assets/a60e25d0-33b8-46cf-af90-20a7d8ac2adb)
+1. Download nRF's DFU app from iOS App Store or Android's Play Store, you can find the app by searching for `nrf dfu`, the app's full name is `nRF Device Firmware Update`
+2. On flasher.meshcore.co.uk, download the **ZIP** version of the firmware for your nRF device (e.g. RAK or Heltec T114 or Seeed Studio's Xiao)
+3. From the MeshCore app, login remotely to the repeater you want to update with admin priviledge
+4. Go to the Command Line tab, type `start ota` and hit enter.
+5. you should see `OK` to confirm the repeater device is now in OTA mode
+6. Run the DFU app,tab `Settings` on the top right corner
+7. Enable `Packets receipt notifications`, and change `Number of Packets` to 10 for RAK, 8 for T114.  8 also works for RAK.  
+9. Select the firmware zip file you downloaded
+10. Select the device you want to update. If the device you want to updat is not on the list, try enabling`OTA` on the device again
+11. If the device is not found, enable `Force Scanning` in the DFU app
+12. Tab the `Upload` to begin OTA update
+13. If it fails, try turning off and on Bluetooth on your phone.  If that doesn't work, try rebooting your phone.  
+14. Wait for the update to complete.  It can take a few minutes.
 
 
+### 7.2 Q: How to update ESP32-based devices over the air?
 
-**Android steps continues below:**
-1. on the top left corner of the nRF Connect app on Android, tap the 3-bar hamburger menu, then `Settings`, then `nRF5 DFU Options`
+**A:** For ESP32-based devices (e.g. Heltec V3):
+1. On flasher.meshcore.co.uk, download the **non-merged** version of the firmware for your ESP32 device (e.g. `Heltec_v3_repeater-v1.6.2-4449fd3.bin`, no `"merged"` in the file name)
+2. From the MeshCore app, login remotely to the repeater you want to update with admin priviledge
+4. Go to the Command Line tab, type `start ota` and hit enter.
+5. you should see `OK` to confirm the repeater device is now in OTA mode
+6. The command `start ota` on an ESP32-based device starts a wifi hotspot named `MeshCore OTA`
+7. From your phone or computer connect to the 'MeshCore OTA' hotspot 
+8. From a browser, go to http://192.168.4.1/update and upload the non-merged bin from the flasher
 
-![Android nRF Hamberger](https://github.com/user-attachments/assets/ea6dfeef-9367-4830-bd70-1441d517c706)
 
-![Android nRF Settings](https://github.com/user-attachments/assets/c63726bf-cecd-4987-be68-afb6358c7190)
+### 7.3 Q: Is there a way to lower the chance of a failed OTA device firmware update (DFU)?
 
-![Android nRF DFU Options](https://github.com/user-attachments/assets/b20e872f-5122-41d9-90df-0215cff5fbc9)
+**A:** Yes, developer `che aporeps` has an enhanced OTA DFU bootloader for nRF52 based devices.  With this bootloader, if it detects that the application firmware is invalid, it falls back to OTA DFU mode so you can attempt to flash again to recover.  This bootloader has other changes to make the OTA DFU process more fault tolerant. 
 
-2. Change `Number of packets` to `10` for RAK, `8` for Heltec T114
+Refer to https://github.com/oltaco/Adafruit_nRF52_Bootloader_OTAFIX for the latest information.
 
-![Android nRF Number of Packets](https://github.com/user-attachments/assets/c092adaf-4cb3-460b-b7ef-8d7f450d602b)
+Currently, the following boards are supported:
+- Nologo ProMicro
+- Seeed Studio XIAO nRF52840 BLE
+- Seeed Studio XIAO nRF52840 BLE SENSE
+- RAK 4631
 
-3. Go back to the main screen
-4. Your LoRa device should already ben in DFU mode from previous steps
-5. tap `SCANNER` and then `SCAN` to find the device you want to update, tap `CONNECT`
+### 7.4 Q are the MeshCore logo and font available?
 
-![Android nRF Scanner Scan Connect](https://github.com/user-attachments/assets/37218717-f167-48b6-a6ca-93d132ef77ca)
-
-6. On the top left corner of the nRF Connect app, tap the `DFU` icon next to the three dots
-
-![Android nRF DFU](https://github.com/user-attachments/assets/1ec3b818-bf0c-461f-8fdf-37c41a63cafa)
-
-7. Choose `Distribution packet (ZIP)` and then `OK`
-
-![Android nRF Distribution Packet (ZIP)](https://github.com/user-attachments/assets/e65f5616-9793-44f5-95c0-a3eb15aa7152)
-
-8. Choose the firmware file in ZIP formate that you downloaded earlier from the MeshCore web flasher, update will start as soon as you tap the file
-
-![Android nRF FW Updating](https://github.com/user-attachments/assets/0814d123-85ce-4c87-90a7-e1a25dc71900)
-
-9. When the update process is done, the device will disconnect from nRF app and the LoRa device is updated
+**A:** Yes, it is on the MeshCore github repo here: https://github.com/ripplebiz/MeshCore/tree/main/logo
 
 
 ---
-    

docs/packet_structure.md

@@ -0,0 +1,54 @@
+# Packet Structure
+
+| Field    | Size (bytes)                     | Description                                               |
+|----------|----------------------------------|-----------------------------------------------------------|
+| header   | 1                                | Contains routing type, payload type, and payload version. |
+| path_len | 1                                | Length of the path field in bytes.                        |
+| path     | up to 64 (`MAX_PATH_SIZE`)       | Stores the routing path if applicable.                    |
+| payload  | up to 184 (`MAX_PACKET_PAYLOAD`) | The actual data being transmitted.                        |
+
+Note: see the [payloads doc](./payloads.md) for more information about the content of payload.
+
+## Header Breakdown
+
+bit 0 means the lowest bit (1s place)
+
+| Bits  | Mask   | Field           | Description                                   |
+|-------|--------|-----------------|-----------------------------------------------|
+| 0-1   | `0x03` | Route Type      | Flood, Direct, Reserved - see below.          |
+| 2-5   | `0x3C` | Payload Type    | Request, Response, ACK, etc. - see below.     |
+| 6-7   | `0xC0` | Payload Version | Versioning of the payload format - see below. |
+
+## Route Type Values
+
+| Value  | Name                          | Description                          |
+|--------|-------------------------------|--------------------------------------|
+| `0x00` | `ROUTE_TYPE_TRANSPORT_FLOOD`  | Flood routing mode + transport codes |
+| `0x01` | `ROUTE_TYPE_FLOOD`            | Flood routing mode (builds up path). |
+| `0x02` | `ROUTE_TYPE_DIRECT`           | Direct route (path is supplied).     |
+| `0x03` | `ROUTE_TYPE_TRANSPORT_DIRECT` | direct route + transport codes       |
+
+## Payload Type Values
+
+| Value  | Name                      | Description                                   |
+|--------|---------------------------|-----------------------------------------------|
+| `0x00` | `PAYLOAD_TYPE_REQ`        | Request (destination/source hashes + MAC).    |
+| `0x01` | `PAYLOAD_TYPE_RESPONSE`   | Response to REQ or ANON_REQ.                  |
+| `0x02` | `PAYLOAD_TYPE_TXT_MSG`    | Plain text message.                           |
+| `0x03` | `PAYLOAD_TYPE_ACK`        | Acknowledgment.                               |
+| `0x04` | `PAYLOAD_TYPE_ADVERT`     | Node advertisement.                           |
+| `0x05` | `PAYLOAD_TYPE_GRP_TXT`    | Group text message (unverified).              |
+| `0x06` | `PAYLOAD_TYPE_GRP_DATA`   | Group datagram (unverified).                  |
+| `0x07` | `PAYLOAD_TYPE_ANON_REQ`   | Anonymous request.                            |
+| `0x08` | `PAYLOAD_TYPE_PATH`       | Returned path.                                |
+| `0x09` | `PAYLOAD_TYPE_TRACE`      | trace a path, collecting SNI for each hop.    |
+| `0x0F` | `PAYLOAD_TYPE_RAW_CUSTOM` | Custom packet (raw bytes, custom encryption). |
+
+## Payload Version Values
+
+| Value  | Version | Description                                       |
+|--------|---------|---------------------------------------------------|
+| `0x00` | 1       | 1-byte src/dest hashes, 2-byte MAC.               |
+| `0x01` | 2       | Future version (e.g., 2-byte hashes, 4-byte MAC). |
+| `0x02` | 3       | Future version.                                   |
+| `0x03` | 4       | Future version.                                   |

docs/payloads.md

@@ -0,0 +1,187 @@
+# Meshcore payloads
+Inside of each [meshcore packet](./packet_structure.md) is a payload, identified by the payload type in the packet header. The types of payloads are:
+
+* Node advertisement.
+* Acknowledgment.
+* Returned path.
+* Request (destination/source hashes + MAC).
+* Response to REQ or ANON_REQ.
+* Plain text message.
+* Anonymous request.
+* Group text message (unverified).
+* Group datagram (unverified).
+* Custom packet (raw bytes, custom encryption).
+
+This document defines the structure of each of these payload types
+
+## Important concepts:
+
+* Node/channel hash: the first byte of the node or channel's public key
+
+# Node advertisement
+This kind of payload notifies receivers that a node exists, and gives information about the node
+
+| Field         | Size (bytes)    | Description                                              |
+|---------------|-----------------|----------------------------------------------------------|
+| public key    | 32              | Ed25519 public key of the node                           |
+| timestamp     | 4               | unix timestamp of advertisement                          |
+| signature     | 64              | Ed25519 signature of public key, timestamp, and app data |
+| appdata       | rest of payload | optional, see below                                      |
+
+Appdata
+
+| Field         | Size (bytes)    | Description                                           |
+|---------------|-----------------|-------------------------------------------------------|
+| flags         | 1               | specifies which of the fields are present, see below  |
+| latitude      | 4               | decimal latitude multiplied by 1000000, integer       |
+| longitude     | 4               | decimal longitude multiplied by 1000000, integer      |
+| feature 1     | 2               | reserved for future use                               |
+| feature 2     | 2               | reserved for future use                               |
+| name          | rest of appdata | name of the node                                      |
+
+Appdata Flags
+
+| Value  | Name           | Description                           |
+|--------|----------------|---------------------------------------|
+| `0x01` | is chat node   | advert is for a chat node             |
+| `0x02` | is repeater    | advert is for a repeater              |
+| `0x03` | is room server | advert is for a room server           |
+| `0x10` | has location   | appdata contains lat/long information |
+| `0x20` | has feature 1  | Reserved for future use.              |
+| `0x40` | has feature 2  | Reserved for future use.              |
+| `0x80` | has name       | appdata contains a node name          |
+
+# Acknowledgement
+
+An acknowledgement that a message was received. Note that for returned path messages, an acknowledgement will be sent in the "extra" payload (see [Returned Path](#returned-path)) and not as a discrete ackowledgement. CLI commands do not require an acknowledgement, neither discrete nor extra.
+
+| Field    | Size (bytes) | Description                                                |
+|----------|--------------|------------------------------------------------------------|
+| checksum | 4            | CRC checksum of message timestamp, text, and sender pubkey |
+
+
+# Returned path, request, response, and plain text message
+
+Returned path, request, response, and plain text messages are all formatted in the same way. See the subsection for more details about the ciphertext's associated plaintext representation.
+
+| Field            | Size (bytes)    | Description                                          |
+|------------------|-----------------|------------------------------------------------------|
+| destination hash | 1               | first byte of destination node public key            |
+| source hash      | 1               | first byte of source node public key                 |
+| cipher MAC       | 2               | MAC for encrypted data in next field                 |
+| ciphertext       | rest of payload | encrypted message, see subsections below for details |
+
+## Returned path
+
+Returned path messages provide a description of the route a packet took from the original author. Receivers will send returned path messages to the author of the original message.
+
+| Field       | Size (bytes) | Description                                                                                  |
+|-------------|--------------|----------------------------------------------------------------------------------------------|
+| path length | 1            | length of next field                                                                         |
+| path        | see above    | a list of node hashes (one byte each) |
+| extra type  | 1            | extra, bundled payload type, eg., acknowledgement or response. Same values as in [packet structure](./packet_structure.md) |
+| extra       | rest of data | extra, bundled payload content, follows same format as main content defined by this document |
+
+## Request
+
+| Field        | Size (bytes)    | Description                |
+|--------------|-----------------|----------------------------|
+| timestamp    | 4               | send time (unix timestamp) |
+| request type | 1               | see below                  |
+| request data | rest of payload | depends on request type    |
+
+Request type
+
+| Value  | Name               | Description                           |
+|--------|--------------------|---------------------------------------|
+| `0x01` | get status         | get status of repeater or room server |
+| `0x02` | keepalive          | TODO |
+| `0x03` | get telemetry data | TODO |
+
+### Get status
+
+Gets information about the node, possibly including the following:
+
+* Battery level (millivolts)
+* Current transmit queue length
+* Current free queue length
+* Last RSSI value
+* Number of received packets
+* Number of sent packets
+* Total airtime (seconds)
+* Total uptime (seconds)
+* Number of packets sent as flood
+* Number of packets sent directly
+* Number of packets received as flood
+* Number of packets received directly
+* Error flags
+* Last SNR value
+* Number of direct route duplicates
+* Number of flood route duplicates
+* Number posted (?)
+* Number of post pushes (?)
+
+### Keepalive
+
+No-op request.
+
+### Get telemetry data
+
+Request data about sensors on the node, including battery level.
+
+## Response
+
+| Field   | Size (bytes)    | Description |
+|---------|-----------------|-------------|
+| tag     | 4               | TODO        |
+| content | rest of payload | TODO        |
+
+## Plain text message
+
+| Field        | Size (bytes)    | Description                                                  |
+|--------------|-----------------|--------------------------------------------------------------|
+| timestamp    | 4               | send time (unix timestamp)                                   |
+| flags + TODO | 1               | first six bits are flags (see below), last two bits are TODO |
+| message      | rest of payload | the message content, see next table                          |
+
+Flags
+
+| Value  | Description               | Message content                                            |
+|--------|---------------------------|------------------------------------------------------------|
+| `0x00` | plain text message        | the plain text of the message                              |
+| `0x01` | CLI command               | the command text of the message                            |
+| `0x02` | signed plain text message | two bytes of sender prefix, followed by plain text message |
+
+# Anonymous request
+
+| Field            | Size (bytes)    | Description                               |
+|------------------|-----------------|-------------------------------------------|
+| destination hash | 1               | first byte of destination node public key |
+| public key       | 32              | sender's Ed25519 public key               |
+| cipher MAC       | 2               | MAC for encrypted data in next field      |
+| ciphertext       | rest of payload | encrypted message, see below for details  |
+
+Plaintext message
+
+| Field          | Size (bytes)    | Description                                                                   |
+|----------------|-----------------|-------------------------------------------------------------------------------|
+| timestamp      | 4               | send time (unix timestamp)                                                    |
+| sync timestamp | 4               | for room server, otherwise absent: sender's "sync messages SINCE x" timestamp |
+| password       | rest of message | password for repeater/room                                                    |
+
+# Group text message / datagram
+
+| Field        | Size (bytes)    | Description                                |
+|--------------|-----------------|--------------------------------------------|
+| channel hash | 1               | the first byte of the channel's public key | 
+| cipher MAC   | 2               | MAC for encrypted data in next field       |
+| ciphertext   | rest of payload | encrypted message, see below for details   |
+
+The plaintext contained in the ciphertext matches the format described in [plain text message](#plain-text-message). Specifically, it consists of a four byte timestamp, a flags byte, and the message. The flags byte will generally be `0x00` because it is a "plain text message". The message will be of the form `<sender name>: <message body>` (eg., `user123: I'm on my way`).
+
+
+TODO: describe what datagram looks like
+
+# Custom packet
+
+Custom packets have no defined format.

examples/companion_radio/Button.cpp

@@ -0,0 +1,131 @@
+#include "Button.h"
+
+Button::Button(uint8_t pin, bool activeState) 
+    : _pin(pin), _activeState(activeState), _isAnalog(false), _analogThreshold(20) {
+    _currentState = false;  // Initialize as not pressed
+    _lastState = _currentState;
+}
+
+Button::Button(uint8_t pin, bool activeState, bool isAnalog, uint16_t analogThreshold)
+    : _pin(pin), _activeState(activeState), _isAnalog(isAnalog), _analogThreshold(analogThreshold) {
+    _currentState = false;  // Initialize as not pressed
+    _lastState = _currentState;
+}
+
+void Button::begin() {
+    _currentState = readButton();
+    _lastState = _currentState;
+}
+
+void Button::update() {
+    uint32_t now = millis();
+    
+    // Read button at specified interval
+    if (now - _lastReadTime < BUTTON_READ_INTERVAL_MS) {
+        return;
+    }
+    _lastReadTime = now;
+    
+    bool newState = readButton();
+    
+    // Check if state has changed
+    if (newState != _lastState) {
+        _stateChangeTime = now;
+    }
+    
+    // Debounce check
+    if ((now - _stateChangeTime) > BUTTON_DEBOUNCE_TIME_MS) {
+        if (newState != _currentState) {
+            _currentState = newState;
+            handleStateChange();
+        }
+    }
+    
+    _lastState = newState;
+    
+    // Handle multi-click timeout
+    if (_state == WAITING_FOR_MULTI_CLICK && (now - _releaseTime) > BUTTON_CLICK_TIMEOUT_MS) {
+        // Timeout reached, process the clicks
+        if (_clickCount == 1) {
+            triggerEvent(SHORT_PRESS);
+        } else if (_clickCount == 2) {
+            triggerEvent(DOUBLE_PRESS);
+        } else if (_clickCount == 3) {
+            triggerEvent(TRIPLE_PRESS);
+        } else if (_clickCount >= 4) {
+            triggerEvent(QUADRUPLE_PRESS);
+        }
+
+        _clickCount = 0;
+        _state = IDLE;
+    }
+    
+    // Handle long press while button is held
+    if (_state == PRESSED && (now - _pressTime) > BUTTON_LONG_PRESS_TIME_MS) {
+        triggerEvent(LONG_PRESS);
+        _state = IDLE;  // Prevent multiple press events
+        _clickCount = 0;
+    }
+}
+
+bool Button::readButton() {
+    if (_isAnalog) {
+        return (analogRead(_pin) < _analogThreshold);
+    } else {
+        return (digitalRead(_pin) == _activeState);
+    }
+}
+
+void Button::handleStateChange() {
+    uint32_t now = millis();
+    
+    if (_currentState) {
+        // Button pressed
+        _pressTime = now;
+        _state = PRESSED;
+        triggerEvent(ANY_PRESS);
+    } else {
+        // Button released
+        if (_state == PRESSED) {
+            uint32_t pressDuration = now - _pressTime;
+            
+            if (pressDuration < BUTTON_LONG_PRESS_TIME_MS) {
+                // Short press detected
+                _clickCount++;
+                _releaseTime = now;
+                _state = WAITING_FOR_MULTI_CLICK;
+            } else {
+                // Long press already handled in update()
+                _state = IDLE;
+                _clickCount = 0;
+            }
+        }
+    }
+}
+
+void Button::triggerEvent(EventType event) {
+    _lastEvent = event;
+    
+    switch (event) {
+        case ANY_PRESS:
+            if (_onAnyPress) _onAnyPress();
+            break;
+        case SHORT_PRESS:
+            if (_onShortPress) _onShortPress();
+            break;
+        case DOUBLE_PRESS:
+            if (_onDoublePress) _onDoublePress();
+            break;
+        case TRIPLE_PRESS:
+            if (_onTriplePress) _onTriplePress();
+            break;
+        case QUADRUPLE_PRESS:
+            if (_onQuadruplePress) _onQuadruplePress();
+            break;
+        case LONG_PRESS:
+            if (_onLongPress) _onLongPress();
+            break;
+        default:
+            break;
+    }
+}

examples/companion_radio/Button.h

@@ -0,0 +1,80 @@
+#pragma once
+
+#include <Arduino.h>
+#include <functional>
+
+// Button timing configuration
+#define BUTTON_DEBOUNCE_TIME_MS    50      // Debounce time in ms
+#define BUTTON_CLICK_TIMEOUT_MS    500     // Max time between clicks for multi-click
+#define BUTTON_LONG_PRESS_TIME_MS  3000    // Time to trigger long press (3 seconds)
+#define BUTTON_READ_INTERVAL_MS    10      // How often to read the button
+
+class Button {
+public:
+    enum EventType {
+        NONE,
+        SHORT_PRESS,
+        DOUBLE_PRESS,
+        TRIPLE_PRESS,
+        QUADRUPLE_PRESS,
+        LONG_PRESS,
+        ANY_PRESS
+    };
+
+    using EventCallback = std::function<void()>;
+
+    Button(uint8_t pin, bool activeState = LOW);
+    Button(uint8_t pin, bool activeState, bool isAnalog, uint16_t analogThreshold = 20);
+    
+    void begin();
+    void update();
+    
+    // Set callbacks for different events
+    void onShortPress(EventCallback callback) { _onShortPress = callback; }
+    void onDoublePress(EventCallback callback) { _onDoublePress = callback; }
+    void onTriplePress(EventCallback callback) { _onTriplePress = callback; }
+    void onQuadruplePress(EventCallback callback) { _onQuadruplePress = callback; }
+    void onLongPress(EventCallback callback) { _onLongPress = callback; }
+    void onAnyPress(EventCallback callback) { _onAnyPress = callback; }
+    
+    // State getters
+    bool isPressed() const { return _currentState; }
+    EventType getLastEvent() const { return _lastEvent; }
+
+private:
+    enum State {
+        IDLE,
+        PRESSED,
+        RELEASED,
+        WAITING_FOR_MULTI_CLICK
+    };
+
+    uint8_t _pin;
+    bool _activeState;
+    bool _isAnalog;
+    uint16_t _analogThreshold;
+    
+    State _state = IDLE;
+    bool _currentState;
+    bool _lastState;
+    
+    uint32_t _stateChangeTime = 0;
+    uint32_t _pressTime = 0;
+    uint32_t _releaseTime = 0;
+    uint32_t _lastReadTime = 0;
+    
+    uint8_t _clickCount = 0;
+    EventType _lastEvent = NONE;
+    
+    // Callbacks
+    EventCallback _onShortPress = nullptr;
+    EventCallback _onDoublePress = nullptr;
+    EventCallback _onTriplePress = nullptr;
+    EventCallback _onQuadruplePress = nullptr;
+    EventCallback _onLongPress = nullptr;
+    EventCallback _onAnyPress = nullptr;
+    
+    bool readButton();
+    void handleStateChange();
+    void triggerEvent(EventType event);
+};

examples/companion_radio/DataStore.cpp

@@ -0,0 +1,444 @@
+#include <Arduino.h>
+#include "DataStore.h"
+
+DataStore::DataStore(FILESYSTEM& fs, mesh::RTCClock& clock) : _fs(&fs), _clock(&clock),
+#if defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
+    identity_store(fs, "")
+#elif defined(RP2040_PLATFORM)
+    identity_store(fs, "/identity")
+#else
+    identity_store(fs, "/identity")
+#endif
+{
+}
+
+static File openWrite(FILESYSTEM* _fs, const char* filename) {
+#if defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
+  _fs->remove(filename);
+  return _fs->open(filename, FILE_O_WRITE);
+#elif defined(RP2040_PLATFORM)
+  return _fs->open(filename, "w");
+#else
+  return _fs->open(filename, "w", true);
+#endif
+}
+
+void DataStore::begin() {
+#if defined(RP2040_PLATFORM)
+  identity_store.begin();
+#endif
+
+#if defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
+  checkAdvBlobFile();
+#else
+  // init 'blob store' support
+  _fs->mkdir("/bl");
+#endif
+}
+
+#if defined(ESP32)
+  #include <SPIFFS.h>
+#elif defined(RP2040_PLATFORM)
+  #include <LittleFS.h>
+#elif defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
+  #include <InternalFileSystem.h>
+#endif
+
+#if defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
+int _countLfsBlock(void *p, lfs_block_t block){
+  lfs_size_t *size = (lfs_size_t*) p;
+  *size += 1;
+  return 0;
+}
+
+lfs_ssize_t _getLfsUsedBlockCount() {
+  lfs_size_t size = 0;
+  lfs_traverse(InternalFS._getFS(), _countLfsBlock, &size);
+  return size;
+}
+#endif
+
+uint32_t DataStore::getStorageUsedKb() const {
+#if defined(ESP32)
+  return SPIFFS.usedBytes() / 1024;
+#elif defined(RP2040_PLATFORM)
+  FSInfo info;
+  info.usedBytes = 0;
+  _fs->info(info);
+  return info.usedBytes / 1024;
+#elif defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
+  const lfs_config* config = InternalFS._getFS()->cfg;
+  int usedBlockCount = _getLfsUsedBlockCount();
+  int usedBytes = config->block_size * usedBlockCount;
+  return usedBytes / 1024;
+#else
+  return 0;
+#endif
+}
+
+uint32_t DataStore::getStorageTotalKb() const {
+#if defined(ESP32)
+  return SPIFFS.totalBytes() / 1024;
+#elif defined(RP2040_PLATFORM)
+  FSInfo info;
+  info.totalBytes = 0;
+  _fs->info(info);
+  return info.totalBytes / 1024;
+#elif defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
+  const lfs_config* config = InternalFS._getFS()->cfg;
+  int totalBytes = config->block_size * config->block_count;
+  return totalBytes / 1024;
+#else
+  return 0;
+#endif
+}
+
+File DataStore::openRead(const char* filename) {
+#if defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
+  return _fs->open(filename, FILE_O_READ);
+#elif defined(RP2040_PLATFORM)
+  return _fs->open(filename, "r");
+#else
+  return _fs->open(filename, "r", false);
+#endif
+}
+
+bool DataStore::removeFile(const char* filename) {
+  return _fs->remove(filename);
+}
+
+bool DataStore::formatFileSystem() {
+#if defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
+  return _fs->format();
+#elif defined(RP2040_PLATFORM)
+  return LittleFS.format();
+#elif defined(ESP32)
+  return ((fs::SPIFFSFS *)_fs)->format();
+#else
+  #error "need to implement format()"
+#endif
+}
+
+bool DataStore::loadMainIdentity(mesh::LocalIdentity &identity) {
+  return identity_store.load("_main", identity);
+}
+
+bool DataStore::saveMainIdentity(const mesh::LocalIdentity &identity) {
+  return identity_store.save("_main", identity);
+}
+
+void DataStore::loadPrefs(NodePrefs& prefs, double& node_lat, double& node_lon) {
+  if (_fs->exists("/new_prefs")) {
+    loadPrefsInt("/new_prefs", prefs, node_lat, node_lon); // new filename
+  } else if (_fs->exists("/node_prefs")) {
+    loadPrefsInt("/node_prefs", prefs, node_lat, node_lon);
+    savePrefs(prefs, node_lat, node_lon);                // save to new filename
+    _fs->remove("/node_prefs"); // remove old
+  }
+}
+
+void DataStore::loadPrefsInt(const char *filename, NodePrefs& _prefs, double& node_lat, double& node_lon) {
+#if defined(RP2040_PLATFORM)
+  File file = _fs->open(filename, "r");
+#else
+  File file = _fs->open(filename);
+#endif
+  if (file) {
+    uint8_t pad[8];
+
+    file.read((uint8_t *)&_prefs.airtime_factor, sizeof(float));                           // 0
+    file.read((uint8_t *)_prefs.node_name, sizeof(_prefs.node_name));                      // 4
+    file.read(pad, 4);                                                                     // 36
+    file.read((uint8_t *)&node_lat, sizeof(node_lat));                                     // 40
+    file.read((uint8_t *)&node_lon, sizeof(node_lon));                                     // 48
+    file.read((uint8_t *)&_prefs.freq, sizeof(_prefs.freq));                               // 56
+    file.read((uint8_t *)&_prefs.sf, sizeof(_prefs.sf));                                   // 60
+    file.read((uint8_t *)&_prefs.cr, sizeof(_prefs.cr));                                   // 61
+    file.read((uint8_t *)&_prefs.reserved1, sizeof(_prefs.reserved1));                     // 62
+    file.read((uint8_t *)&_prefs.manual_add_contacts, sizeof(_prefs.manual_add_contacts)); // 63
+    file.read((uint8_t *)&_prefs.bw, sizeof(_prefs.bw));                                   // 64
+    file.read((uint8_t *)&_prefs.tx_power_dbm, sizeof(_prefs.tx_power_dbm));               // 68
+    file.read((uint8_t *)&_prefs.telemetry_mode_base, sizeof(_prefs.telemetry_mode_base)); // 69
+    file.read((uint8_t *)&_prefs.telemetry_mode_loc, sizeof(_prefs.telemetry_mode_loc));   // 70
+    file.read((uint8_t *)&_prefs.telemetry_mode_env, sizeof(_prefs.telemetry_mode_env));   // 71
+    file.read((uint8_t *)&_prefs.rx_delay_base, sizeof(_prefs.rx_delay_base));             // 72
+    file.read((uint8_t *)&_prefs.advert_loc_policy, sizeof(_prefs.advert_loc_policy));     // 76
+    file.read(pad, 3);                                                                     // 77
+    file.read((uint8_t *)&_prefs.ble_pin, sizeof(_prefs.ble_pin));                         // 80
+
+    file.close();
+  }
+}
+
+void DataStore::savePrefs(const NodePrefs& _prefs, double node_lat, double node_lon) {
+  File file = openWrite(_fs, "/new_prefs");
+  if (file) {
+    uint8_t pad[8];
+    memset(pad, 0, sizeof(pad));
+
+    file.write((uint8_t *)&_prefs.airtime_factor, sizeof(float));                           // 0
+    file.write((uint8_t *)_prefs.node_name, sizeof(_prefs.node_name));                      // 4
+    file.write(pad, 4);                                                                     // 36
+    file.write((uint8_t *)&node_lat, sizeof(node_lat));                                     // 40
+    file.write((uint8_t *)&node_lon, sizeof(node_lon));                                     // 48
+    file.write((uint8_t *)&_prefs.freq, sizeof(_prefs.freq));                               // 56
+    file.write((uint8_t *)&_prefs.sf, sizeof(_prefs.sf));                                   // 60
+    file.write((uint8_t *)&_prefs.cr, sizeof(_prefs.cr));                                   // 61
+    file.write((uint8_t *)&_prefs.reserved1, sizeof(_prefs.reserved1));                     // 62
+    file.write((uint8_t *)&_prefs.manual_add_contacts, sizeof(_prefs.manual_add_contacts)); // 63
+    file.write((uint8_t *)&_prefs.bw, sizeof(_prefs.bw));                                   // 64
+    file.write((uint8_t *)&_prefs.tx_power_dbm, sizeof(_prefs.tx_power_dbm));               // 68
+    file.write((uint8_t *)&_prefs.telemetry_mode_base, sizeof(_prefs.telemetry_mode_base)); // 69
+    file.write((uint8_t *)&_prefs.telemetry_mode_loc, sizeof(_prefs.telemetry_mode_loc));   // 70
+    file.write((uint8_t *)&_prefs.telemetry_mode_env, sizeof(_prefs.telemetry_mode_env));   // 71
+    file.write((uint8_t *)&_prefs.rx_delay_base, sizeof(_prefs.rx_delay_base));             // 72
+    file.write((uint8_t *)&_prefs.advert_loc_policy, sizeof(_prefs.advert_loc_policy));     // 76
+    file.write(pad, 3);                                                                     // 77
+    file.write((uint8_t *)&_prefs.ble_pin, sizeof(_prefs.ble_pin));                         // 80
+
+    file.close();
+  }
+}
+
+void DataStore::loadContacts(DataStoreHost* host) {
+  if (_fs->exists("/contacts3")) {
+#if defined(RP2040_PLATFORM)
+    File file = _fs->open("/contacts3", "r");
+#else
+    File file = _fs->open("/contacts3");
+#endif
+    if (file) {
+      bool full = false;
+      while (!full) {
+        ContactInfo c;
+        uint8_t pub_key[32];
+        uint8_t unused;
+
+        bool success = (file.read(pub_key, 32) == 32);
+        success = success && (file.read((uint8_t *)&c.name, 32) == 32);
+        success = success && (file.read(&c.type, 1) == 1);
+        success = success && (file.read(&c.flags, 1) == 1);
+        success = success && (file.read(&unused, 1) == 1);
+        success = success && (file.read((uint8_t *)&c.sync_since, 4) == 4); // was 'reserved'
+        success = success && (file.read((uint8_t *)&c.out_path_len, 1) == 1);
+        success = success && (file.read((uint8_t *)&c.last_advert_timestamp, 4) == 4);
+        success = success && (file.read(c.out_path, 64) == 64);
+        success = success && (file.read((uint8_t *)&c.lastmod, 4) == 4);
+        success = success && (file.read((uint8_t *)&c.gps_lat, 4) == 4);
+        success = success && (file.read((uint8_t *)&c.gps_lon, 4) == 4);
+
+        if (!success) break; // EOF
+
+        c.id = mesh::Identity(pub_key);
+        if (!host->onContactLoaded(c)) full = true;
+      }
+      file.close();
+    }
+  }
+}
+
+void DataStore::saveContacts(DataStoreHost* host) {
+  File file = openWrite(_fs, "/contacts3");
+  if (file) {
+    uint32_t idx = 0;
+    ContactInfo c;
+    uint8_t unused = 0;
+
+    while (host->getContactForSave(idx, c)) {
+      bool success = (file.write(c.id.pub_key, 32) == 32);
+      success = success && (file.write((uint8_t *)&c.name, 32) == 32);
+      success = success && (file.write(&c.type, 1) == 1);
+      success = success && (file.write(&c.flags, 1) == 1);
+      success = success && (file.write(&unused, 1) == 1);
+      success = success && (file.write((uint8_t *)&c.sync_since, 4) == 4);
+      success = success && (file.write((uint8_t *)&c.out_path_len, 1) == 1);
+      success = success && (file.write((uint8_t *)&c.last_advert_timestamp, 4) == 4);
+      success = success && (file.write(c.out_path, 64) == 64);
+      success = success && (file.write((uint8_t *)&c.lastmod, 4) == 4);
+      success = success && (file.write((uint8_t *)&c.gps_lat, 4) == 4);
+      success = success && (file.write((uint8_t *)&c.gps_lon, 4) == 4);
+
+      if (!success) break; // write failed
+
+      idx++;  // advance to next contact
+    }
+    file.close();
+  }
+}
+
+void DataStore::loadChannels(DataStoreHost* host) {
+  if (_fs->exists("/channels2")) {
+#if defined(RP2040_PLATFORM)
+    File file = _fs->open("/channels2", "r");
+#else
+    File file = _fs->open("/channels2");
+#endif
+    if (file) {
+      bool full = false;
+      uint8_t channel_idx = 0;
+      while (!full) {
+        ChannelDetails ch;
+        uint8_t unused[4];
+
+        bool success = (file.read(unused, 4) == 4);
+        success = success && (file.read((uint8_t *)ch.name, 32) == 32);
+        success = success && (file.read((uint8_t *)ch.channel.secret, 32) == 32);
+
+        if (!success) break; // EOF
+
+        if (host->onChannelLoaded(channel_idx, ch)) {
+          channel_idx++;
+        } else {
+          full = true;
+        }
+      }
+      file.close();
+    }
+  }
+}
+
+void DataStore::saveChannels(DataStoreHost* host) {
+  File file = openWrite(_fs, "/channels2");
+  if (file) {
+    uint8_t channel_idx = 0;
+    ChannelDetails ch;
+    uint8_t unused[4];
+    memset(unused, 0, 4);
+
+    while (host->getChannelForSave(channel_idx, ch)) {
+      bool success = (file.write(unused, 4) == 4);
+      success = success && (file.write((uint8_t *)ch.name, 32) == 32);
+      success = success && (file.write((uint8_t *)ch.channel.secret, 32) == 32);
+
+      if (!success) break; // write failed
+      channel_idx++;
+    }
+    file.close();
+  }
+}
+
+#if defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
+
+#define MAX_ADVERT_PKT_LEN   (2 + 32 + PUB_KEY_SIZE + 4 + SIGNATURE_SIZE + MAX_ADVERT_DATA_SIZE)
+
+struct BlobRec {
+  uint32_t timestamp;
+  uint8_t  key[7];
+  uint8_t  len;
+  uint8_t  data[MAX_ADVERT_PKT_LEN];
+};
+
+void DataStore::checkAdvBlobFile() {
+  if (!_fs->exists("/adv_blobs")) {
+    File file = openWrite(_fs, "/adv_blobs");
+    if (file) {
+      BlobRec zeroes;
+      memset(&zeroes, 0, sizeof(zeroes));
+      for (int i = 0; i < 20; i++) {     // pre-allocate to fixed size
+        file.write((uint8_t *) &zeroes, sizeof(zeroes));
+      }
+      file.close();
+    }
+  }
+}
+
+uint8_t DataStore::getBlobByKey(const uint8_t key[], int key_len, uint8_t dest_buf[]) {
+  File file = _fs->open("/adv_blobs");
+  uint8_t len = 0;  // 0 = not found
+
+  if (file) {
+    BlobRec tmp;
+    while (file.read((uint8_t *) &tmp, sizeof(tmp)) == sizeof(tmp)) {
+      if (memcmp(key, tmp.key, sizeof(tmp.key)) == 0) {  // only match by 7 byte prefix
+        len = tmp.len;
+        memcpy(dest_buf, tmp.data, len);
+        break;
+      }
+    }
+    file.close();
+  }
+  return len;
+}
+
+bool DataStore::putBlobByKey(const uint8_t key[], int key_len, const uint8_t src_buf[], uint8_t len) {
+  if (len < PUB_KEY_SIZE+4+SIGNATURE_SIZE || len > MAX_ADVERT_PKT_LEN) return false;
+
+  checkAdvBlobFile();
+
+  File file = _fs->open("/adv_blobs", FILE_O_WRITE);
+  if (file) {
+    uint32_t pos = 0, found_pos = 0;
+    uint32_t min_timestamp = 0xFFFFFFFF;
+
+    // search for matching key OR evict by oldest timestmap
+    BlobRec tmp;
+    file.seek(0);
+    while (file.read((uint8_t *) &tmp, sizeof(tmp)) == sizeof(tmp)) {
+      if (memcmp(key, tmp.key, sizeof(tmp.key)) == 0) {  // only match by 7 byte prefix
+        found_pos = pos;
+        break;
+      }
+      if (tmp.timestamp < min_timestamp) {
+        min_timestamp = tmp.timestamp;
+        found_pos = pos;
+      }
+
+      pos += sizeof(tmp);
+    }
+
+    memcpy(tmp.key, key, sizeof(tmp.key));  // just record 7 byte prefix of key
+    memcpy(tmp.data, src_buf, len);
+    tmp.len = len;
+    tmp.timestamp = _clock->getCurrentTime();
+
+    file.seek(found_pos);
+    file.write((uint8_t *) &tmp, sizeof(tmp));
+
+    file.close();
+    return true;
+  }
+  return false; // error
+}
+#else
+uint8_t DataStore::getBlobByKey(const uint8_t key[], int key_len, uint8_t dest_buf[]) {
+  char path[64];
+  char fname[18];
+
+  if (key_len > 8) key_len = 8; // just use first 8 bytes (prefix)
+  mesh::Utils::toHex(fname, key, key_len);
+  sprintf(path, "/bl/%s", fname);
+
+  if (_fs->exists(path)) {
+#if defined(RP2040_PLATFORM)
+    File f = _fs->open(path, "r");
+#else
+    File f = _fs->open(path);
+#endif
+    if (f) {
+      int len = f.read(dest_buf, 255); // currently MAX 255 byte blob len supported!!
+      f.close();
+      return len;
+    }
+  }
+  return 0; // not found
+}
+
+bool DataStore::putBlobByKey(const uint8_t key[], int key_len, const uint8_t src_buf[], uint8_t len) {
+  char path[64];
+  char fname[18];
+
+  if (key_len > 8) key_len = 8; // just use first 8 bytes (prefix)
+  mesh::Utils::toHex(fname, key, key_len);
+  sprintf(path, "/bl/%s", fname);
+
+  File f = openWrite(_fs, path);
+  if (f) {
+    int n = f.write(src_buf, len);
+    f.close();
+    if (n == len) return true; // success!
+
+    _fs->remove(path); // blob was only partially written!
+  }
+  return false; // error
+}
+#endif

examples/companion_radio/DataStore.h

@@ -0,0 +1,44 @@
+#pragma once
+
+#include <helpers/IdentityStore.h>
+#include <helpers/ContactInfo.h>
+#include <helpers/ChannelDetails.h>
+#include "NodePrefs.h"
+
+class DataStoreHost {
+public:
+  virtual bool onContactLoaded(const ContactInfo& contact) =0;
+  virtual bool getContactForSave(uint32_t idx, ContactInfo& contact) =0;
+  virtual bool onChannelLoaded(uint8_t channel_idx, const ChannelDetails& ch) =0;
+  virtual bool getChannelForSave(uint8_t channel_idx, ChannelDetails& ch) =0;
+};
+
+class DataStore {
+  FILESYSTEM* _fs;
+  mesh::RTCClock* _clock;
+  IdentityStore identity_store;
+
+  void loadPrefsInt(const char *filename, NodePrefs& prefs, double& node_lat, double& node_lon);
+#if defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
+  void checkAdvBlobFile();
+#endif
+
+public:
+  DataStore(FILESYSTEM& fs, mesh::RTCClock& clock);
+  void begin();
+  bool formatFileSystem();
+  bool loadMainIdentity(mesh::LocalIdentity &identity);
+  bool saveMainIdentity(const mesh::LocalIdentity &identity);
+  void loadPrefs(NodePrefs& prefs, double& node_lat, double& node_lon);
+  void savePrefs(const NodePrefs& prefs, double node_lat, double node_lon);
+  void loadContacts(DataStoreHost* host);
+  void saveContacts(DataStoreHost* host);
+  void loadChannels(DataStoreHost* host);
+  void saveChannels(DataStoreHost* host);
+  uint8_t getBlobByKey(const uint8_t key[], int key_len, uint8_t dest_buf[]);
+  bool putBlobByKey(const uint8_t key[], int key_len, const uint8_t src_buf[], uint8_t len);
+  File openRead(const char* filename);
+  bool removeFile(const char* filename);
+  uint32_t getStorageUsedKb() const;
+  uint32_t getStorageTotalKb() const;
+};

examples/companion_radio/MyMesh.h

@@ -0,0 +1,210 @@
+#pragma once
+
+#include <Arduino.h>
+#include <Mesh.h>
+#ifdef DISPLAY_CLASS
+#include "UITask.h"
+#endif
+
+/*------------ Frame Protocol --------------*/
+#define FIRMWARE_VER_CODE 6
+
+#ifndef FIRMWARE_BUILD_DATE
+#define FIRMWARE_BUILD_DATE "2 Jul 2025"
+#endif
+
+#ifndef FIRMWARE_VERSION
+#define FIRMWARE_VERSION "v1.7.2"
+#endif
+
+#if defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
+#include <InternalFileSystem.h>
+#elif defined(RP2040_PLATFORM)
+#include <LittleFS.h>
+#elif defined(ESP32)
+#include <SPIFFS.h>
+#endif
+
+#include "DataStore.h"
+#include "NodePrefs.h"
+
+#include <RTClib.h>
+#include <helpers/ArduinoHelpers.h>
+#include <helpers/BaseSerialInterface.h>
+#include <helpers/IdentityStore.h>
+#include <helpers/SimpleMeshTables.h>
+#include <helpers/StaticPoolPacketManager.h>
+#include <target.h>
+
+/* ---------------------------------- CONFIGURATION ------------------------------------- */
+
+#ifndef LORA_FREQ
+#define LORA_FREQ 915.0
+#endif
+#ifndef LORA_BW
+#define LORA_BW 250
+#endif
+#ifndef LORA_SF
+#define LORA_SF 10
+#endif
+#ifndef LORA_CR
+#define LORA_CR 5
+#endif
+#ifndef LORA_TX_POWER
+#define LORA_TX_POWER 20
+#endif
+#ifndef MAX_LORA_TX_POWER
+#define MAX_LORA_TX_POWER LORA_TX_POWER
+#endif
+
+#ifndef MAX_CONTACTS
+#define MAX_CONTACTS 100
+#endif
+
+#ifndef OFFLINE_QUEUE_SIZE
+#define OFFLINE_QUEUE_SIZE 16
+#endif
+
+#ifndef BLE_NAME_PREFIX
+#define BLE_NAME_PREFIX "MeshCore-"
+#endif
+
+#include <helpers/BaseChatMesh.h>
+
+/* -------------------------------------------------------------------------------------- */
+
+#define REQ_TYPE_GET_STATUS             0x01 // same as _GET_STATS
+#define REQ_TYPE_KEEP_ALIVE             0x02
+#define REQ_TYPE_GET_TELEMETRY_DATA     0x03
+
+class MyMesh : public BaseChatMesh, public DataStoreHost {
+public:
+  MyMesh(mesh::Radio &radio, mesh::RNG &rng, mesh::RTCClock &rtc, SimpleMeshTables &tables, DataStore& store);
+
+  void begin(bool has_display);
+  void startInterface(BaseSerialInterface &serial);
+
+  const char *getNodeName();
+  NodePrefs *getNodePrefs();
+  uint32_t getBLEPin();
+
+  void loop();
+  void handleCmdFrame(size_t len);
+  bool advert();
+  void enterCLIRescue();
+
+protected:
+  float getAirtimeBudgetFactor() const override;
+  int getInterferenceThreshold() const override;
+  int calcRxDelay(float score, uint32_t air_time) const override;
+
+  void logRxRaw(float snr, float rssi, const uint8_t raw[], int len) override;
+  bool isAutoAddEnabled() const override;
+  void onDiscoveredContact(ContactInfo &contact, bool is_new, uint8_t path_len, const uint8_t* path) override;
+  void onContactPathUpdated(const ContactInfo &contact) override;
+  bool processAck(const uint8_t *data) override;
+  void queueMessage(const ContactInfo &from, uint8_t txt_type, mesh::Packet *pkt, uint32_t sender_timestamp,
+                    const uint8_t *extra, int extra_len, const char *text);
+
+  void onMessageRecv(const ContactInfo &from, mesh::Packet *pkt, uint32_t sender_timestamp,
+                     const char *text) override;
+  void onCommandDataRecv(const ContactInfo &from, mesh::Packet *pkt, uint32_t sender_timestamp,
+                         const char *text) override;
+  void onSignedMessageRecv(const ContactInfo &from, mesh::Packet *pkt, uint32_t sender_timestamp,
+                           const uint8_t *sender_prefix, const char *text) override;
+  void onChannelMessageRecv(const mesh::GroupChannel &channel, mesh::Packet *pkt, uint32_t timestamp,
+                            const char *text) override;
+
+  uint8_t onContactRequest(const ContactInfo &contact, uint32_t sender_timestamp, const uint8_t *data,
+                           uint8_t len, uint8_t *reply) override;
+  void onContactResponse(const ContactInfo &contact, const uint8_t *data, uint8_t len) override;
+  void onRawDataRecv(mesh::Packet *packet) override;
+  void onTraceRecv(mesh::Packet *packet, uint32_t tag, uint32_t auth_code, uint8_t flags,
+                   const uint8_t *path_snrs, const uint8_t *path_hashes, uint8_t path_len) override;
+
+  uint32_t calcFloodTimeoutMillisFor(uint32_t pkt_airtime_millis) const override;
+  uint32_t calcDirectTimeoutMillisFor(uint32_t pkt_airtime_millis, uint8_t path_len) const override;
+  void onSendTimeout() override;
+
+  // DataStoreHost methods
+  bool onContactLoaded(const ContactInfo& contact) override { return addContact(contact); }
+  bool getContactForSave(uint32_t idx, ContactInfo& contact) override { return getContactByIdx(idx, contact); }
+  bool onChannelLoaded(uint8_t channel_idx, const ChannelDetails& ch) override { return setChannel(channel_idx, ch); }
+  bool getChannelForSave(uint8_t channel_idx, ChannelDetails& ch) override { return getChannel(channel_idx, ch); }
+
+private:
+  void writeOKFrame();
+  void writeErrFrame(uint8_t err_code);
+  void writeDisabledFrame();
+  void writeContactRespFrame(uint8_t code, const ContactInfo &contact);
+  void updateContactFromFrame(ContactInfo &contact, const uint8_t *frame, int len);
+  void addToOfflineQueue(const uint8_t frame[], int len);
+  int getFromOfflineQueue(uint8_t frame[]);
+  int getBlobByKey(const uint8_t key[], int key_len, uint8_t dest_buf[]) override { 
+    return _store->getBlobByKey(key, key_len, dest_buf);
+  }
+  bool putBlobByKey(const uint8_t key[], int key_len, const uint8_t src_buf[], int len) override {
+    return _store->putBlobByKey(key, key_len, src_buf, len);
+  }
+
+  void checkCLIRescueCmd();
+  void checkSerialInterface();
+
+  // helpers, short-cuts
+  void savePrefs() { _store->savePrefs(_prefs, sensors.node_lat, sensors.node_lon); }
+  void saveChannels() { _store->saveChannels(this); }
+  void saveContacts() { _store->saveContacts(this); }
+
+private:
+  DataStore* _store;
+  NodePrefs _prefs;
+  uint32_t pending_login;
+  uint32_t pending_status;
+  uint32_t pending_telemetry;
+  BaseSerialInterface *_serial;
+
+  ContactsIterator _iter;
+  uint32_t _iter_filter_since;
+  uint32_t _most_recent_lastmod;
+  uint32_t _active_ble_pin;
+  bool _iter_started;
+  bool _cli_rescue;
+  char cli_command[80];
+  uint8_t app_target_ver;
+  uint8_t *sign_data;
+  uint32_t sign_data_len;
+  unsigned long dirty_contacts_expiry;
+
+  uint8_t cmd_frame[MAX_FRAME_SIZE + 1];
+  uint8_t out_frame[MAX_FRAME_SIZE + 1];
+  CayenneLPP telemetry;
+
+  struct Frame {
+    uint8_t len;
+    uint8_t buf[MAX_FRAME_SIZE];
+  };
+  int offline_queue_len;
+  Frame offline_queue[OFFLINE_QUEUE_SIZE];
+
+  struct AckTableEntry {
+    unsigned long msg_sent;
+    uint32_t ack;
+  };
+  #define EXPECTED_ACK_TABLE_SIZE 8
+  AckTableEntry expected_ack_table[EXPECTED_ACK_TABLE_SIZE]; // circular table
+  int next_ack_idx;
+
+  struct AdvertPath {
+    uint8_t pubkey_prefix[7];
+    uint8_t path_len;
+    uint32_t recv_timestamp;
+    uint8_t path[MAX_PATH_SIZE];
+  };
+  #define ADVERT_PATH_TABLE_SIZE   16
+  AdvertPath advert_paths[ADVERT_PATH_TABLE_SIZE]; // circular table
+};
+
+extern MyMesh the_mesh;
+#ifdef DISPLAY_CLASS
+extern UITask ui_task;
+#endif

examples/companion_radio/NodePrefs.h

@@ -0,0 +1,27 @@
+#pragma once
+#include <cstdint> // For uint8_t, uint32_t
+
+#define TELEM_MODE_DENY            0
+#define TELEM_MODE_ALLOW_FLAGS     1     // use contact.flags
+#define TELEM_MODE_ALLOW_ALL       2
+
+#define ADVERT_LOC_NONE       0
+#define ADVERT_LOC_SHARE      1
+
+struct NodePrefs {  // persisted to file
+  float airtime_factor;
+  char node_name[32];
+  float freq;
+  uint8_t sf;
+  uint8_t cr;
+  uint8_t reserved1;
+  uint8_t manual_add_contacts;
+  float bw;
+  uint8_t tx_power_dbm;
+  uint8_t telemetry_mode_base;
+  uint8_t telemetry_mode_loc;
+  uint8_t telemetry_mode_env;
+  float rx_delay_base;
+  uint32_t ble_pin;
+  uint8_t  advert_loc_policy;
+};

examples/companion_radio/UITask.cpp

@@ -1,8 +1,17 @@
 #include "UITask.h"
 #include <Arduino.h>
 #include <helpers/TxtDataHelpers.h>
+#include "NodePrefs.h"
+#include "MyMesh.h"
 
-#define AUTO_OFF_MILLIS   15000   // 15 seconds
+#define AUTO_OFF_MILLIS     15000   // 15 seconds
+#define BOOT_SCREEN_MILLIS   3000   // 3 seconds
+
+#ifdef PIN_STATUS_LED
+#define LED_ON_MILLIS     20
+#define LED_ON_MSG_MILLIS 200
+#define LED_CYCLE_MILLIS  4000
+#endif
 
 #ifndef USER_BTN_PRESSED
 #define USER_BTN_PRESSED LOW
@@ -25,16 +34,83 @@ static const uint8_t meshcore_logo [] PROGMEM = {
     0xe3, 0xe3, 0x8f, 0xff, 0x1f, 0xfc, 0x3c, 0x0e, 0x1f, 0xf8, 0xff, 0xf8, 0x70, 0x3c, 0x7f, 0xf8, 
 };
 
-void UITask::begin(DisplayDriver* display, const char* node_name, const char* build_date, uint32_t pin_code) {
+void UITask::begin(DisplayDriver* display, SensorManager* sensors, NodePrefs* node_prefs) {
   _display = display;
+  _sensors = sensors;
   _auto_off = millis() + AUTO_OFF_MILLIS;
   clearMsgPreview();
-  _node_name = node_name;
-  _build_date = build_date;
-  _pin_code = pin_code;
+  _node_prefs = node_prefs;
   if (_display != NULL) {
     _display->turnOn();
   }
+
+  // strip off dash and commit hash by changing dash to null terminator
+  // e.g: v1.2.3-abcdef -> v1.2.3
+  char *version = strdup(FIRMWARE_VERSION);
+  char *dash = strchr(version, '-');
+  if (dash) {
+    *dash = 0;
+  }
+
+  // v1.2.3 (1 Jan 2025)
+  sprintf(_version_info, "%s (%s)", version, FIRMWARE_BUILD_DATE);
+
+#ifdef PIN_BUZZER
+  buzzer.begin();
+#endif
+
+  // Initialize digital button if available
+#ifdef PIN_USER_BTN
+  _userButton = new Button(PIN_USER_BTN, USER_BTN_PRESSED);
+  _userButton->begin();
+  
+  // Set up digital button callbacks
+  _userButton->onShortPress([this]() { handleButtonShortPress(); });
+  _userButton->onDoublePress([this]() { handleButtonDoublePress(); });
+  _userButton->onTriplePress([this]() { handleButtonTriplePress(); });
+  _userButton->onQuadruplePress([this]() { handleButtonQuadruplePress(); });
+  _userButton->onLongPress([this]() { handleButtonLongPress(); });
+  _userButton->onAnyPress([this]() { handleButtonAnyPress(); });
+#endif
+
+  // Initialize analog button if available
+#ifdef PIN_USER_BTN_ANA
+  _userButtonAnalog = new Button(PIN_USER_BTN_ANA, USER_BTN_PRESSED, true, 20);
+  _userButtonAnalog->begin();
+  
+  // Set up analog button callbacks
+  _userButtonAnalog->onShortPress([this]() { handleButtonShortPress(); });
+  _userButtonAnalog->onDoublePress([this]() { handleButtonDoublePress(); });
+  _userButtonAnalog->onTriplePress([this]() { handleButtonTriplePress(); });
+  _userButtonAnalog->onQuadruplePress([this]() { handleButtonQuadruplePress(); });
+  _userButtonAnalog->onLongPress([this]() { handleButtonLongPress(); });
+  _userButtonAnalog->onAnyPress([this]() { handleButtonAnyPress(); });
+#endif
+  ui_started_at = millis();
+}
+
+void UITask::soundBuzzer(UIEventType bet) {
+#if defined(PIN_BUZZER)
+switch(bet){
+  case UIEventType::contactMessage:
+    // gemini's pick
+    buzzer.play("MsgRcv3:d=4,o=6,b=200:32e,32g,32b,16c7");
+    break;
+  case UIEventType::channelMessage:
+    buzzer.play("kerplop:d=16,o=6,b=120:32g#,32c#");
+    break;
+  case UIEventType::ack:
+    buzzer.play("ack:d=32,o=8,b=120:c");
+    break;
+  case UIEventType::roomMessage:
+  case UIEventType::newContactMessage:
+  case UIEventType::none:
+  default:
+    break;
+}
+#endif
+//  Serial.print("DBG:  Buzzzzzz -> ");
+//  Serial.println((int) bet);
 }
 
 void UITask::msgRead(int msgcount) {
@@ -47,6 +123,7 @@ void UITask::msgRead(int msgcount) {
 void UITask::clearMsgPreview() {
   _origin[0] = 0;
   _msg[0] = 0;
+  _need_refresh = true;
 }
 
 void UITask::newMsg(uint8_t path_len, const char* from_name, const char* text, int msgcount) {
@@ -62,118 +139,190 @@ void UITask::newMsg(uint8_t path_len, const char* from_name, const char* text, i
   if (_display != NULL) {
     if (!_display->isOn()) _display->turnOn();
     _auto_off = millis() + AUTO_OFF_MILLIS;  // extend the auto-off timer
+    _need_refresh = true;
   }
 }
 
+void UITask::renderBatteryIndicator(uint16_t batteryMilliVolts) {
+  // Convert millivolts to percentage
+  const int minMilliVolts = 3000; // Minimum voltage (e.g., 3.0V)
+  const int maxMilliVolts = 4200; // Maximum voltage (e.g., 4.2V)
+  int batteryPercentage = ((batteryMilliVolts - minMilliVolts) * 100) / (maxMilliVolts - minMilliVolts);
+  if (batteryPercentage < 0) batteryPercentage = 0; // Clamp to 0%
+  if (batteryPercentage > 100) batteryPercentage = 100; // Clamp to 100%
+
+  // battery icon
+  int iconWidth = 24;
+  int iconHeight = 12;
+  int iconX = _display->width() - iconWidth - 5; // Position the icon near the top-right corner
+  int iconY = 0;
+  _display->setColor(DisplayDriver::GREEN);
+
+  // battery outline
+  _display->drawRect(iconX, iconY, iconWidth, iconHeight);
+
+  // battery "cap"
+  _display->fillRect(iconX + iconWidth, iconY + (iconHeight / 4), 3, iconHeight / 2);
+
+  // fill the battery based on the percentage
+  int fillWidth = (batteryPercentage * (iconWidth - 4)) / 100;
+  _display->fillRect(iconX + 2, iconY + 2, fillWidth, iconHeight - 4);
+}
+
 void UITask::renderCurrScreen() {
   if (_display == NULL) return;  // assert() ??
 
   char tmp[80];
-  if (_origin[0] && _msg[0]) {
+  if (_alert[0]) {
+    _display->setTextSize(1.4);
+    uint16_t textWidth = _display->getTextWidth(_alert);
+    _display->setCursor((_display->width() - textWidth) / 2, 22);
+    _display->setColor(DisplayDriver::GREEN);
+    _display->print(_alert);
+    _alert[0] = 0;
+    _need_refresh = true;
+    return;
+  } else if (_origin[0] && _msg[0]) { // message preview
     // render message preview
     _display->setCursor(0, 0);
     _display->setTextSize(1);
-    _display->print(_node_name);
+    _display->setColor(DisplayDriver::GREEN);
+    _display->print(_node_prefs->node_name);
 
     _display->setCursor(0, 12);
+    _display->setColor(DisplayDriver::YELLOW);
     _display->print(_origin);
     _display->setCursor(0, 24);
+    _display->setColor(DisplayDriver::LIGHT);
     _display->print(_msg);
 
-    _display->setCursor(100, 9);
+    _display->setCursor(_display->width() - 28, 9);
     _display->setTextSize(2);
+    _display->setColor(DisplayDriver::ORANGE);
     sprintf(tmp, "%d", _msgcount);
     _display->print(tmp);
-  } else {
-    // render 'home' screen
-    _display->drawXbm(0, 0, meshcore_logo, 128, 13);
-    _display->setCursor(0, 20);
-    _display->setTextSize(1);
-    _display->print(_node_name);
+    _display->setColor(DisplayDriver::YELLOW); // last color will be kept on T114
+  } else if ((millis() - ui_started_at) < BOOT_SCREEN_MILLIS) { // boot screen
+    // meshcore logo
+    _display->setColor(DisplayDriver::BLUE);
+    int logoWidth = 128;
+    _display->drawXbm((_display->width() - logoWidth) / 2, 3, meshcore_logo, logoWidth, 13);
 
-    sprintf(tmp, "Build: %s", _build_date);
-    _display->setCursor(0, 32);
+    // version info
+    _display->setColor(DisplayDriver::LIGHT);
+    _display->setTextSize(1);
+    uint16_t textWidth = _display->getTextWidth(_version_info);
+    _display->setCursor((_display->width() - textWidth) / 2, 22);
+    _display->print(_version_info);
+  } else {  // home screen
+    // node name
+    _display->setCursor(0, 0);
+    _display->setTextSize(1);
+    _display->setColor(DisplayDriver::GREEN);
+    _display->print(_node_prefs->node_name);
+
+    // battery voltage
+    renderBatteryIndicator(_board->getBattMilliVolts());
+
+    // freq / sf
+    _display->setCursor(0, 20);
+    _display->setColor(DisplayDriver::YELLOW);
+    sprintf(tmp, "FREQ: %06.3f SF%d", _node_prefs->freq, _node_prefs->sf);
     _display->print(tmp);
 
-    if (_connected) {
-      //_display->printf("freq : %03.2f sf %d\n", _prefs.freq, _prefs.sf);
-      //_display->printf("bw   : %03.2f cr %d\n", _prefs.bw, _prefs.cr);
-    } else if (_pin_code != 0) {
+    // bw / cr
+    _display->setCursor(0, 30);
+    sprintf(tmp, "BW: %03.2f CR: %d", _node_prefs->bw, _node_prefs->cr);
+    _display->print(tmp);
+
+    // BT pin
+    if (!_connected && the_mesh.getBLEPin() != 0) {
+      _display->setColor(DisplayDriver::RED);
       _display->setTextSize(2);
       _display->setCursor(0, 43);
-      sprintf(tmp, "Pin:%d", _pin_code);
+      sprintf(tmp, "Pin:%d", the_mesh.getBLEPin());
       _display->print(tmp);
+      _display->setColor(DisplayDriver::GREEN);
+    } else {
+      _display->setColor(DisplayDriver::LIGHT); 
     }
   }
+  _need_refresh = false;
 }
 
 void UITask::userLedHandler() {
 #ifdef PIN_STATUS_LED
   static int state = 0;
   static int next_change = 0;
+  static int last_increment = 0;
+
   int cur_time = millis();
   if (cur_time > next_change) {
     if (state == 0) {
-      state = 1; // led on, short = unread msg
+      state = 1;
       if (_msgcount > 0) {
-        next_change = cur_time + 500;
+        last_increment = LED_ON_MSG_MILLIS;
       } else {
-        next_change = cur_time + 2000;
+        last_increment = LED_ON_MILLIS;
       }
+      next_change = cur_time + last_increment;
     } else {
       state = 0;
-      if (_board->getBattMilliVolts() > 3800) {
-        next_change = cur_time + 2000;
-      } else {
-        next_change = cur_time + 4000; // 4s blank if bat level low
-      }
+      next_change = cur_time + LED_CYCLE_MILLIS - last_increment;
     }
     digitalWrite(PIN_STATUS_LED, state);
   }
 #endif
 }
 
-void UITask::buttonHandler() {
-#ifdef PIN_USER_BTN
-  static int prev_btn_state = !USER_BTN_PRESSED;
-  static unsigned long btn_state_change_time = 0;
-  static unsigned long next_read = 0;
-  int cur_time = millis();
-  if (cur_time >= next_read) {
-    int btn_state = digitalRead(PIN_USER_BTN);
-    if (btn_state != prev_btn_state) {
-      if (btn_state == USER_BTN_PRESSED) {  // pressed?
-        if (_display != NULL) {
-          if (_display->isOn()) {
-            clearMsgPreview();
-          } else {
-            _display->turnOn();
-          }
-          _auto_off = cur_time + AUTO_OFF_MILLIS;   // extend auto-off timer
-        }
-      } else { // unpressed ? check pressed time ...
-        if ((cur_time - btn_state_change_time) > 5000) {
-        #ifdef PIN_STATUS_LED
-          digitalWrite(PIN_STATUS_LED, LOW);
-          delay(10);
-        #endif
-          _board->powerOff();
-        }
-      }
-      btn_state_change_time = millis();
-      prev_btn_state = btn_state;
-    }
-    next_read = millis() + 100;  // 10 reads per second
-  }
-#endif
+/* 
+  hardware-agnostic pre-shutdown activity should be done here 
+*/
+void UITask::shutdown(bool restart){
+
+  #ifdef PIN_BUZZER
+  /* note: we have a choice here -
+     we can do a blocking buzzer.loop() with non-deterministic consequences
+     or we can set a flag and delay the shutdown for a couple of seconds
+     while a non-blocking buzzer.loop() plays out in UITask::loop()
+  */
+  buzzer.shutdown();
+  uint32_t buzzer_timer = millis(); // fail-safe shutdown
+  while (buzzer.isPlaying() && (millis() - 2500) < buzzer_timer)
+    buzzer.loop();
+
+  #endif // PIN_BUZZER
+
+  if (restart)
+    _board->reboot();
+  else
+    _board->powerOff();
 }
 
 void UITask::loop() {
-  buttonHandler();
+  #ifdef PIN_USER_BTN
+    if (_userButton) {
+      _userButton->update();
+    }
+  #endif
+  #ifdef PIN_USER_BTN_ANA
+    if (_userButtonAnalog) {
+      _userButtonAnalog->update();
+    }
+  #endif
   userLedHandler();
 
+#ifdef PIN_BUZZER
+  if (buzzer.isPlaying())  buzzer.loop();
+#endif
+
   if (_display != NULL && _display->isOn()) {
-    if (millis() >= _next_refresh) {
+    static bool _firstBoot = true;
+    if(_firstBoot && (millis() - ui_started_at) >= BOOT_SCREEN_MILLIS) {
+      _need_refresh = true;
+      _firstBoot = false;
+    }
+    if (millis() >= _next_refresh && _need_refresh) {
       _display->startFrame();
       renderCurrScreen();
       _display->endFrame();
@@ -185,3 +334,95 @@ void UITask::loop() {
     }
   }
 }
+
+void UITask::handleButtonAnyPress() {
+  MESH_DEBUG_PRINTLN("UITask: any press triggered");
+  // called on any button press before other events, to wake up the display quickly
+  // do not refresh the display here, as it may block the button handler
+  if (_display != NULL) {
+    _displayWasOn = _display->isOn();  // Track display state before any action
+    if (!_displayWasOn) {
+      _display->turnOn();
+    }
+    _auto_off = millis() + AUTO_OFF_MILLIS;   // extend auto-off timer
+  }
+}
+
+void UITask::handleButtonShortPress() {
+  MESH_DEBUG_PRINTLN("UITask: short press triggered");
+  if (_display != NULL) {
+    // Only clear message preview if display was already on before button press
+    if (_displayWasOn) {
+      // If display was on and showing message preview, clear it
+      if (_origin[0] && _msg[0]) {
+        clearMsgPreview();
+      } else {
+        // Otherwise, refresh the display
+        _need_refresh = true;
+      }
+    } else {
+      _need_refresh = true; // display just turned on, so we need to refresh
+    }
+    // Note: Display turn-on and auto-off timer extension are handled by handleButtonAnyPress
+  }
+}
+
+void UITask::handleButtonDoublePress() {
+  MESH_DEBUG_PRINTLN("UITask: double press triggered, sending advert");
+  // ADVERT
+  #ifdef PIN_BUZZER
+      soundBuzzer(UIEventType::ack);
+  #endif
+  if (the_mesh.advert()) {
+    MESH_DEBUG_PRINTLN("Advert sent!");
+    sprintf(_alert, "Advert sent!");
+  } else {
+    MESH_DEBUG_PRINTLN("Advert failed!");
+    sprintf(_alert, "Advert failed..");
+  }
+  _need_refresh = true;
+}
+
+void UITask::handleButtonTriplePress() {
+  MESH_DEBUG_PRINTLN("UITask: triple press triggered");
+  // Toggle buzzer quiet mode
+  #ifdef PIN_BUZZER
+    if (buzzer.isQuiet()) {
+      buzzer.quiet(false);
+      soundBuzzer(UIEventType::ack);
+      sprintf(_alert, "Buzzer: ON");
+    } else {
+      buzzer.quiet(true);
+      sprintf(_alert, "Buzzer: OFF");
+    }
+    _need_refresh = true;
+  #endif
+}
+
+void UITask::handleButtonQuadruplePress() {
+  MESH_DEBUG_PRINTLN("UITask: quad press triggered");
+  if (_sensors != NULL) {
+    // toggle GPS onn/off
+    int num = _sensors->getNumSettings();
+    for (int i = 0; i < num; i++) {
+      if (strcmp(_sensors->getSettingName(i), "gps") == 0) {
+        if (strcmp(_sensors->getSettingValue(i), "1") == 0) {
+          _sensors->setSettingValue("gps", "0");
+        } else {
+          _sensors->setSettingValue("gps", "1");
+        }
+        break;
+      }
+    }
+  }
+  _need_refresh = true;
+}
+
+void UITask::handleButtonLongPress() {
+  MESH_DEBUG_PRINTLN("UITask: long press triggered");
+  if (millis() - ui_started_at < 8000) {   // long press in first 8 seconds since startup -> CLI/rescue
+    the_mesh.enterCLIRescue();
+  } else {
+    shutdown();
+  }
+}

examples/companion_radio/UITask.h

@@ -2,36 +2,81 @@
 
 #include <MeshCore.h>
 #include <helpers/ui/DisplayDriver.h>
+#include <helpers/SensorManager.h>
 #include <stddef.h>
 
+#ifdef PIN_BUZZER
+  #include <helpers/ui/buzzer.h>
+#endif
+
+#include "NodePrefs.h"
+#include "Button.h"
+
+ enum class UIEventType
+{
+    none,
+    contactMessage,
+    channelMessage,
+    roomMessage,
+    newContactMessage,
+    ack
+};
+
 class UITask {
   DisplayDriver* _display;
   mesh::MainBoard* _board;
+  SensorManager* _sensors;
+#ifdef PIN_BUZZER
+  genericBuzzer buzzer;
+#endif
   unsigned long _next_refresh, _auto_off;
   bool _connected;
-  uint32_t _pin_code;
-  const char* _node_name;
-  const char* _build_date;
+  NodePrefs* _node_prefs;
+  char _version_info[32];
   char _origin[62];
   char _msg[80];
+  char _alert[80];
   int _msgcount;
+  bool _need_refresh = true;
+  bool _displayWasOn = false;  // Track display state before button press
+  unsigned long ui_started_at;
+
+  // Button handlers
+#ifdef PIN_USER_BTN
+  Button* _userButton = nullptr;
+#endif
+#ifdef PIN_USER_BTN_ANA
+  Button* _userButtonAnalog = nullptr;
+#endif
 
   void renderCurrScreen();
-  void buttonHandler();
   void userLedHandler();
+  void renderBatteryIndicator(uint16_t batteryMilliVolts);
+  
+  // Button action handlers
+  void handleButtonAnyPress();
+  void handleButtonShortPress();
+  void handleButtonDoublePress();
+  void handleButtonTriplePress();
+  void handleButtonQuadruplePress();
+  void handleButtonLongPress();
 
+ 
 public:
 
-  UITask(mesh::MainBoard* board) : _board(board), _display(NULL) {
-      _next_refresh = 0; 
+  UITask(mesh::MainBoard* board) : _board(board), _display(NULL), _sensors(NULL) {
+      _next_refresh = 0;
+      ui_started_at = 0;
       _connected = false;
   }
-  void begin(DisplayDriver* display, const char* node_name, const char* build_date, uint32_t pin_code);
+  void begin(DisplayDriver* display, SensorManager* sensors, NodePrefs* node_prefs);
 
   void setHasConnection(bool connected) { _connected = connected; }
   bool hasDisplay() const { return _display != NULL; }
   void clearMsgPreview();
   void msgRead(int msgcount);
   void newMsg(uint8_t path_len, const char* from_name, const char* text, int msgcount);
+  void soundBuzzer(UIEventType bet = UIEventType::none);
+  void shutdown(bool restart = false);
   void loop();
 };

examples/simple_repeater/UITask.cpp

@@ -1,7 +1,9 @@
 #include "UITask.h"
 #include <Arduino.h>
+#include <helpers/CommonCLI.h>
 
-#define AUTO_OFF_MILLIS   20000   // 20 seconds
+#define AUTO_OFF_MILLIS      20000  // 20 seconds
+#define BOOT_SCREEN_MILLIS   4000   // 4 seconds
 
 // 'meshcore', 128x13px
 static const uint8_t meshcore_logo [] PROGMEM = {
@@ -20,29 +22,62 @@ static const uint8_t meshcore_logo [] PROGMEM = {
     0xe3, 0xe3, 0x8f, 0xff, 0x1f, 0xfc, 0x3c, 0x0e, 0x1f, 0xf8, 0xff, 0xf8, 0x70, 0x3c, 0x7f, 0xf8, 
 };
 
-void UITask::begin(const char* node_name, const char* build_date) {
+void UITask::begin(NodePrefs* node_prefs, const char* build_date, const char* firmware_version) {
   _prevBtnState = HIGH;
   _auto_off = millis() + AUTO_OFF_MILLIS;
-  _node_name = node_name;
-  _build_date = build_date;
+  _node_prefs = node_prefs;
   _display->turnOn();
+
+  // strip off dash and commit hash by changing dash to null terminator
+  // e.g: v1.2.3-abcdef -> v1.2.3
+  char *version = strdup(firmware_version);
+  char *dash = strchr(version, '-');
+  if(dash){
+    *dash = 0;
+  }
+
+  // v1.2.3 (1 Jan 2025)
+  sprintf(_version_info, "%s (%s)", version, build_date);
 }
 
 void UITask::renderCurrScreen() {
   char tmp[80];
-  // render 'home' screen
-  _display->drawXbm(0, 0, meshcore_logo, 128, 13);
-  _display->setCursor(0, 20);
-  _display->setTextSize(1);
-  _display->print(_node_name);
+  if (millis() < BOOT_SCREEN_MILLIS) { // boot screen
+    // meshcore logo
+    _display->setColor(DisplayDriver::BLUE);
+    int logoWidth = 128;
+    _display->drawXbm((_display->width() - logoWidth) / 2, 3, meshcore_logo, logoWidth, 13);
 
-  sprintf(tmp, "Build: %s", _build_date);
-  _display->setCursor(0, 32);
-  _display->print(tmp);
-  _display->setCursor(0, 43);
-  _display->print("< Repeater >");
-  //_display->printf("freq : %03.2f sf %d\n", _prefs.freq, _prefs.sf);
-  //_display->printf("bw   : %03.2f cr %d\n", _prefs.bw, _prefs.cr);
+    // version info
+    _display->setColor(DisplayDriver::LIGHT);
+    _display->setTextSize(1);
+    uint16_t versionWidth = _display->getTextWidth(_version_info);
+    _display->setCursor((_display->width() - versionWidth) / 2, 22);
+    _display->print(_version_info);
+
+    // node type
+    const char* node_type = "< Repeater >";
+    uint16_t typeWidth = _display->getTextWidth(node_type);
+    _display->setCursor((_display->width() - typeWidth) / 2, 35);
+    _display->print(node_type);
+  } else {  // home screen
+    // node name
+    _display->setCursor(0, 0);
+    _display->setTextSize(1);
+    _display->setColor(DisplayDriver::GREEN);
+    _display->print(_node_prefs->node_name);
+
+    // freq / sf
+    _display->setCursor(0, 20);
+    _display->setColor(DisplayDriver::YELLOW);
+    sprintf(tmp, "FREQ: %06.3f SF%d", _node_prefs->freq, _node_prefs->sf);
+    _display->print(tmp);
+
+    // bw / cr
+    _display->setCursor(0, 30);
+    sprintf(tmp, "BW: %03.2f CR: %d", _node_prefs->bw, _node_prefs->cr);
+    _display->print(tmp);
+  }
 }
 
 void UITask::loop() {

examples/simple_repeater/UITask.h

@@ -1,18 +1,19 @@
 #pragma once
 
 #include <helpers/ui/DisplayDriver.h>
+#include <helpers/CommonCLI.h>
 
 class UITask {
   DisplayDriver* _display;
   unsigned long _next_read, _next_refresh, _auto_off;
   int _prevBtnState;
-  const char* _node_name;
-  const char* _build_date;
+  NodePrefs* _node_prefs;
+  char _version_info[32];
 
   void renderCurrScreen();
 public:
   UITask(DisplayDriver& display) : _display(&display) { _next_read = _next_refresh = 0; }
-  void begin(const char* node_name, const char* build_date);
+  void begin(NodePrefs* node_prefs, const char* build_date, const char* firmware_version);
 
   void loop();
 };

examples/simple_repeater/main.cpp

@@ -1,19 +1,18 @@
 #include <Arduino.h>   // needed for PlatformIO
 #include <Mesh.h>
 
-#if defined(NRF52_PLATFORM)
+#if defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
   #include <InternalFileSystem.h>
+#elif defined(RP2040_PLATFORM)
+  #include <LittleFS.h>
 #elif defined(ESP32)
   #include <SPIFFS.h>
 #endif
 
-#define RADIOLIB_STATIC_ONLY 1
-#include <RadioLib.h>
 #include <helpers/ArduinoHelpers.h>
 #include <helpers/StaticPoolPacketManager.h>
 #include <helpers/SimpleMeshTables.h>
 #include <helpers/IdentityStore.h>
-#include <helpers/AutoDiscoverRTCClock.h>
 #include <helpers/AdvertDataHelpers.h>
 #include <helpers/TxtDataHelpers.h>
 #include <helpers/CommonCLI.h>
@@ -23,11 +22,11 @@
 /* ------------------------------ Config -------------------------------- */
 
 #ifndef FIRMWARE_BUILD_DATE
-  #define FIRMWARE_BUILD_DATE   "25 Mar 2025"
+  #define FIRMWARE_BUILD_DATE   "2 Jul 2025"
 #endif
 
 #ifndef FIRMWARE_VERSION
-  #define FIRMWARE_VERSION   "v1.4.1"
+  #define FIRMWARE_VERSION   "v1.7.2"
 #endif
 
 #ifndef LORA_FREQ
@@ -60,27 +59,35 @@
   #define  ADMIN_PASSWORD  "password"
 #endif
 
+#ifndef SERVER_RESPONSE_DELAY
+  #define SERVER_RESPONSE_DELAY   300
+#endif
+
+#ifndef TXT_ACK_DELAY
+  #define TXT_ACK_DELAY     200
+#endif
+
 #ifdef DISPLAY_CLASS
-  #include <helpers/ui/SSD1306Display.h>
-
-  static DISPLAY_CLASS  display;
-
   #include "UITask.h"
   static UITask ui_task(display);
 #endif
 
+#define FIRMWARE_ROLE "repeater"
+
 #define PACKET_LOG_FILE  "/packet_log"
 
 /* ------------------------------ Code -------------------------------- */
 
-#define CMD_GET_STATUS      0x01
+#define REQ_TYPE_GET_STATUS          0x01   // same as _GET_STATS
+#define REQ_TYPE_KEEP_ALIVE          0x02
+#define REQ_TYPE_GET_TELEMETRY_DATA  0x03
 
 #define RESP_SERVER_LOGIN_OK      0   // response to ANON_REQ
 
 struct RepeaterStats {
   uint16_t batt_milli_volts;
   uint16_t curr_tx_queue_len;
-  uint16_t curr_free_queue_len;
+  int16_t  noise_floor;
   int16_t  last_rssi;
   uint32_t n_packets_recv;
   uint32_t n_packets_sent;
@@ -88,7 +95,7 @@ struct RepeaterStats {
   uint32_t total_up_time_secs;
   uint32_t n_sent_flood, n_sent_direct;
   uint32_t n_recv_flood, n_recv_direct;
-  uint16_t n_full_events;
+  uint16_t err_events;                // was 'n_full_events'
   int16_t  last_snr;   // x 4
   uint16_t n_direct_dups, n_flood_dups;
 };
@@ -102,22 +109,31 @@ struct ClientInfo {
   uint8_t out_path[MAX_PATH_SIZE];
 };
 
-#define MAX_CLIENTS   4
+#ifndef MAX_CLIENTS
+  #define MAX_CLIENTS           32
+#endif
 
-// NOTE: need to space the ACK and the reply text apart (in CLI)
-#define CLI_REPLY_DELAY_MILLIS  1500
+struct NeighbourInfo {
+  mesh::Identity id;
+  uint32_t advert_timestamp;
+  uint32_t heard_timestamp;
+  int8_t snr; // multiplied by 4, user should divide to get float value
+};
+
+#define CLI_REPLY_DELAY_MILLIS  1000
 
 class MyMesh : public mesh::Mesh, public CommonCLICallbacks {
-  RadioLibWrapper* my_radio;
   FILESYSTEM* _fs;
-  RADIO_CLASS* _phy;
-  mesh::MainBoard* _board;
   unsigned long next_local_advert, next_flood_advert;
   bool _logging;
   NodePrefs _prefs;
   CommonCLI _cli;
   uint8_t reply_data[MAX_PACKET_PAYLOAD];
   ClientInfo known_clients[MAX_CLIENTS];
+#if MAX_NEIGHBOURS
+  NeighbourInfo neighbours[MAX_NEIGHBOURS];
+#endif
+  CayenneLPP telemetry;
 
   ClientInfo* putClient(const mesh::Identity& id) {
     uint32_t min_time = 0xFFFFFFFF;
@@ -137,27 +153,55 @@ class MyMesh : public mesh::Mesh, public CommonCLICallbacks {
     return oldest;
   }
 
-  int handleRequest(ClientInfo* sender, uint8_t* payload, size_t payload_len) {
-    uint32_t now = getRTCClock()->getCurrentTimeUnique();
-    memcpy(reply_data, &now, 4);   // response packets always prefixed with timestamp
+  void putNeighbour(const mesh::Identity& id, uint32_t timestamp, float snr) {
+  #if MAX_NEIGHBOURS    // check if neighbours enabled    
+    // find existing neighbour, else use least recently updated
+    uint32_t oldest_timestamp = 0xFFFFFFFF;
+    NeighbourInfo* neighbour = &neighbours[0];
+    for (int i = 0; i < MAX_NEIGHBOURS; i++) {
+      // if neighbour already known, we should update it
+      if (id.matches(neighbours[i].id)) {
+        neighbour = &neighbours[i];
+        break;
+      }
+
+      // otherwise we should update the least recently updated neighbour
+      if (neighbours[i].heard_timestamp < oldest_timestamp) {
+        neighbour = &neighbours[i];
+        oldest_timestamp = neighbour->heard_timestamp;
+      }
+    }
+
+    // update neighbour info
+    neighbour->id = id;
+    neighbour->advert_timestamp = timestamp;
+    neighbour->heard_timestamp = getRTCClock()->getCurrentTime();
+    neighbour->snr = (int8_t) (snr * 4);
+  #endif
+  }
+
+  int handleRequest(ClientInfo* sender, uint32_t sender_timestamp, uint8_t* payload, size_t payload_len) {
+   // uint32_t now = getRTCClock()->getCurrentTimeUnique();
+   // memcpy(reply_data, &now, 4);   // response packets always prefixed with timestamp
+    memcpy(reply_data, &sender_timestamp, 4);   // reflect sender_timestamp back in response packet (kind of like a 'tag')
 
     switch (payload[0]) {
-      case CMD_GET_STATUS: {   // guests can also access this now
+      case REQ_TYPE_GET_STATUS: {   // guests can also access this now
         RepeaterStats stats;
         stats.batt_milli_volts = board.getBattMilliVolts();
-        stats.curr_tx_queue_len = _mgr->getOutboundCount();
-        stats.curr_free_queue_len = _mgr->getFreeCount();
-        stats.last_rssi = (int16_t) my_radio->getLastRSSI();
-        stats.n_packets_recv = my_radio->getPacketsRecv();
-        stats.n_packets_sent = my_radio->getPacketsSent();
+        stats.curr_tx_queue_len = _mgr->getOutboundCount(0xFFFFFFFF);
+        stats.noise_floor = (int16_t)_radio->getNoiseFloor();
+        stats.last_rssi = (int16_t) radio_driver.getLastRSSI();
+        stats.n_packets_recv = radio_driver.getPacketsRecv();
+        stats.n_packets_sent = radio_driver.getPacketsSent();
         stats.total_air_time_secs = getTotalAirTime() / 1000;
         stats.total_up_time_secs = _ms->getMillis() / 1000;
         stats.n_sent_flood = getNumSentFlood();
         stats.n_sent_direct = getNumSentDirect();
         stats.n_recv_flood = getNumRecvFlood();
         stats.n_recv_direct = getNumRecvDirect();
-        stats.n_full_events = getNumFullEvents();
-        stats.last_snr = (int16_t)(my_radio->getLastSNR() * 4);
+        stats.err_events = _err_flags;
+        stats.last_snr = (int16_t)(radio_driver.getLastSNR() * 4);
         stats.n_direct_dups = ((SimpleMeshTables *)getTables())->getNumDirectDups();
         stats.n_flood_dups = ((SimpleMeshTables *)getTables())->getNumFloodDups();
 
@@ -165,9 +209,18 @@ class MyMesh : public mesh::Mesh, public CommonCLICallbacks {
 
         return 4 + sizeof(stats);  //  reply_len
       }
+      case REQ_TYPE_GET_TELEMETRY_DATA: {
+        telemetry.reset();
+        telemetry.addVoltage(TELEM_CHANNEL_SELF, (float)board.getBattMilliVolts() / 1000.0f);
+        // query other sensors -- target specific
+        sensors.querySensors(sender->is_admin ? 0xFF : 0x00, telemetry);
+
+        uint8_t tlen = telemetry.getSize();
+        memcpy(&reply_data[4], telemetry.getBuffer(), tlen);
+        return 4 + tlen;  // reply_len
+      }
     }
-    // unknown command
-    return 0;  // reply_len
+    return 0;  // unknown command
   }
 
   mesh::Packet* createSelfAdvert() {
@@ -182,8 +235,10 @@ class MyMesh : public mesh::Mesh, public CommonCLICallbacks {
   }
 
   File openAppend(const char* fname) {
-  #if defined(NRF52_PLATFORM)
+  #if defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
     return _fs->open(fname, FILE_O_WRITE);
+  #elif defined(RP2040_PLATFORM)
+    return _fs->open(fname, "a");
   #else
     return _fs->open(fname, "a", true);
   #endif
@@ -279,6 +334,12 @@ protected:
     uint32_t t = (_radio->getEstAirtimeFor(packet->path_len + packet->payload_len + 2) * _prefs.direct_tx_delay_factor);
     return getRNG()->nextInt(0, 6)*t;
   }
+  int getInterferenceThreshold() const override {
+    return _prefs.interference_threshold;
+  }
+  int getAGCResetInterval() const override {
+    return ((int)_prefs.agc_reset_interval) * 4000;   // milliseconds
+  }
 
   void onAnonDataRecv(mesh::Packet* packet, uint8_t type, const mesh::Identity& sender, uint8_t* data, size_t len) override {
     if (type == PAYLOAD_TYPE_ANON_REQ) {  // received an initial request by a possible admin client (unknown at this stage)
@@ -325,14 +386,14 @@ protected:
         // let this sender know path TO here, so they can use sendDirect(), and ALSO encode the response
         mesh::Packet* path = createPathReturn(sender, client->secret, packet->path, packet->path_len,
                                               PAYLOAD_TYPE_RESPONSE, reply_data, 12);
-        if (path) sendFlood(path);
+        if (path) sendFlood(path, SERVER_RESPONSE_DELAY);
       } else {
         mesh::Packet* reply = createDatagram(PAYLOAD_TYPE_RESPONSE, sender, client->secret, reply_data, 12);
         if (reply) {
           if (client->out_path_len >= 0) {  // we have an out_path, so send DIRECT
-            sendDirect(reply, client->out_path, client->out_path_len);
+            sendDirect(reply, client->out_path, client->out_path_len, SERVER_RESPONSE_DELAY);
           } else {
-            sendFlood(reply);
+            sendFlood(reply, SERVER_RESPONSE_DELAY);
           }
         }
       }
@@ -361,6 +422,18 @@ protected:
     }
   }
 
+  void onAdvertRecv(mesh::Packet* packet, const mesh::Identity& id, uint32_t timestamp, const uint8_t* app_data, size_t app_data_len) {
+    mesh::Mesh::onAdvertRecv(packet, id, timestamp, app_data, app_data_len);  // chain to super impl
+
+    // if this a zero hop advert, add it to neighbours
+    if (packet->path_len == 0) {
+      AdvertDataParser parser(app_data, app_data_len);
+      if (parser.isValid() && parser.getType() == ADV_TYPE_REPEATER) {   // just keep neigbouring Repeaters
+        putNeighbour(id, timestamp, packet->getSNR());
+      }
+    }
+  }
+
   void onPeerDataRecv(mesh::Packet* packet, uint8_t type, int sender_idx, const uint8_t* secret, uint8_t* data, size_t len) override {
     int i = matching_peer_indexes[sender_idx];
     if (i < 0 || i >= MAX_CLIENTS) {  // get from our known_clients table (sender SHOULD already be known in this context)
@@ -373,7 +446,7 @@ protected:
       memcpy(&timestamp, data, 4);
 
       if (timestamp > client->last_timestamp) {  // prevent replay attacks
-        int reply_len = handleRequest(client, &data[4], len - 4);
+        int reply_len = handleRequest(client, timestamp, &data[4], len - 4);
         if (reply_len == 0) return;  // invalid command
 
         client->last_timestamp = timestamp;
@@ -383,14 +456,14 @@ protected:
           // let this sender know path TO here, so they can use sendDirect(), and ALSO encode the response
           mesh::Packet* path = createPathReturn(client->id, secret, packet->path, packet->path_len,
                                                 PAYLOAD_TYPE_RESPONSE, reply_data, reply_len);
-          if (path) sendFlood(path);
+          if (path) sendFlood(path, SERVER_RESPONSE_DELAY);
         } else {
           mesh::Packet* reply = createDatagram(PAYLOAD_TYPE_RESPONSE, client->id, secret, reply_data, reply_len);
           if (reply) {
             if (client->out_path_len >= 0) {  // we have an out_path, so send DIRECT
-              sendDirect(reply, client->out_path, client->out_path_len);
+              sendDirect(reply, client->out_path, client->out_path_len, SERVER_RESPONSE_DELAY);
             } else {
-              sendFlood(reply);
+              sendFlood(reply, SERVER_RESPONSE_DELAY);
             }
           }
         }
@@ -419,20 +492,22 @@ protected:
           mesh::Packet* ack = createAck(ack_hash);
           if (ack) {
             if (client->out_path_len < 0) {
-              sendFlood(ack);
+              sendFlood(ack, TXT_ACK_DELAY);
             } else {
-              sendDirect(ack, client->out_path, client->out_path_len);
+              sendDirect(ack, client->out_path, client->out_path_len, TXT_ACK_DELAY);
             }
           }
         }
 
         uint8_t temp[166];
+        const char *command = (const char *) &data[5];
+        char *reply = (char *) &temp[5];
         if (is_retry) {
-          temp[0] = 0;
+          *reply = 0;
         } else {
-          _cli.handleCommand(sender_timestamp, (const char *) &data[5], (char *) &temp[5]);
+          _cli.handleCommand(sender_timestamp, command, reply);
         }
-        int text_len = strlen((char *) &temp[5]);
+        int text_len = strlen(reply);
         if (text_len > 0) {
           uint32_t timestamp = getRTCClock()->getCurrentTimeUnique();
           if (timestamp == sender_timestamp) {
@@ -474,15 +549,18 @@ protected:
   }
 
 public:
-  MyMesh(RADIO_CLASS& phy, mesh::MainBoard& board, RadioLibWrapper& radio, mesh::MillisecondClock& ms, mesh::RNG& rng, mesh::RTCClock& rtc, SimpleMeshTables& tables)
+  MyMesh(mesh::MainBoard& board, mesh::Radio& radio, mesh::MillisecondClock& ms, mesh::RNG& rng, mesh::RTCClock& rtc, mesh::MeshTables& tables)
      : mesh::Mesh(radio, ms, rng, rtc, *new StaticPoolPacketManager(32), tables),
-        _phy(&phy), _board(&board), _cli(board, this, &_prefs, this)
+      _cli(board, rtc, &_prefs, this), telemetry(MAX_PACKET_PAYLOAD - 4)
   {
-    my_radio = &radio;
     memset(known_clients, 0, sizeof(known_clients));
     next_local_advert = next_flood_advert = 0;
     _logging = false;
 
+  #if MAX_NEIGHBOURS
+    memset(neighbours, 0, sizeof(neighbours));
+  #endif
+
     // defaults
     memset(&_prefs, 0, sizeof(_prefs));
     _prefs.airtime_factor = 1.0;    // one half
@@ -500,6 +578,7 @@ public:
     _prefs.advert_interval = 1;  // default to 2 minutes for NEW installs
     _prefs.flood_advert_interval = 3;   // 3 hours
     _prefs.flood_max = 64;
+    _prefs.interference_threshold = 0;  // disabled
   }
 
   CommonCLI* getCLI() { return &_cli; }
@@ -510,11 +589,8 @@ public:
     // load persisted prefs
     _cli.loadPrefs(_fs);
 
-    _phy->setFrequency(_prefs.freq);
-    _phy->setSpreadingFactor(_prefs.sf);
-    _phy->setBandwidth(_prefs.bw);
-    _phy->setCodingRate(_prefs.cr);
-    _phy->setOutputPower(_prefs.tx_power_dbm);
+    radio_set_params(_prefs.freq, _prefs.bw, _prefs.sf, _prefs.cr);
+    radio_set_tx_power(_prefs.tx_power_dbm);
 
     updateAdvertTimer();
     updateFloodAdvertTimer();
@@ -522,19 +598,25 @@ public:
 
   const char* getFirmwareVer() override { return FIRMWARE_VERSION; }
   const char* getBuildDate() override { return FIRMWARE_BUILD_DATE; }
+  const char* getRole() override { return FIRMWARE_ROLE; }
   const char* getNodeName() { return _prefs.node_name; }
+  NodePrefs* getNodePrefs() { 
+    return &_prefs; 
+  }
 
   void savePrefs() override {
     _cli.savePrefs(_fs);
   }
 
   bool formatFileSystem() override {
-#if defined(NRF52_PLATFORM)
+#if defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
     return InternalFS.format();
+#elif defined(RP2040_PLATFORM)
+    return LittleFS.format();
 #elif defined(ESP32)
     return SPIFFS.format();
 #else
-  #error "need to implement file system erase"
+    #error "need to implement file system erase"
     return false;
 #endif
   }
@@ -570,7 +652,11 @@ public:
   }
 
   void dumpLogFile() override {
+#if defined(RP2040_PLATFORM)
+    File f = _fs->open(PACKET_LOG_FILE, "r");
+#else
     File f = _fs->open(PACKET_LOG_FILE);
+#endif
     if (f) {
       while (f.available()) {
         int c = f.read();
@@ -582,7 +668,42 @@ public:
   }
 
   void setTxPower(uint8_t power_dbm) override {
-    _phy->setOutputPower(power_dbm);
+    radio_set_tx_power(power_dbm);
+  }
+
+  void formatNeighborsReply(char *reply) override {
+    char *dp = reply;
+
+#if MAX_NEIGHBOURS
+    for (int i = 0; i < MAX_NEIGHBOURS && dp - reply < 134; i++) {
+      NeighbourInfo* neighbour = &neighbours[i];
+      if (neighbour->heard_timestamp == 0) continue;    // skip empty slots
+
+      // add new line if not first item
+      if (i > 0) *dp++ = '\n';
+
+      char hex[10];
+      // get 4 bytes of neighbour id as hex
+      mesh::Utils::toHex(hex, neighbour->id.pub_key, 4);
+
+      // add next neighbour
+      uint32_t secs_ago = getRTCClock()->getCurrentTime() - neighbour->heard_timestamp;
+      sprintf(dp, "%s:%d:%d", hex, secs_ago, neighbour->snr);
+      while (*dp) dp++;   // find end of string
+    }
+#endif
+    if (dp == reply) {   // no neighbours, need empty response
+      strcpy(dp, "-none-"); dp += 6;
+    }
+    *dp = 0;  // null terminator
+  }
+
+  const uint8_t* getSelfIdPubKey() override { return self_id.pub_key; }
+
+  void clearStats() override {
+    radio_driver.resetStats();
+    resetStats();
+    ((SimpleMeshTables *)getTables())->resetStats();
   }
 
   void loop() {
@@ -609,14 +730,7 @@ public:
 StdRNG fast_rng;
 SimpleMeshTables tables;
 
-#ifdef ESP32
-ESP32RTCClock fallback_clock;
-#else
-VolatileRTCClock fallback_clock;
-#endif
-AutoDiscoverRTCClock rtc_clock(fallback_clock);
-
-MyMesh the_mesh(radio, board, *new WRAPPER_CLASS(radio, board), *new ArduinoMillis(), fast_rng, rtc_clock, tables);
+MyMesh the_mesh(board, radio_driver, *new ArduinoMillis(), fast_rng, rtc_clock, tables);
 
 void halt() {
   while (1) ;
@@ -629,17 +743,21 @@ void setup() {
   delay(1000);
 
   board.begin();
-#ifdef ESP32
-  fallback_clock.begin();
+
+#ifdef DISPLAY_CLASS
+  if (display.begin()) {
+    display.startFrame();
+    display.print("Please wait...");
+    display.endFrame();
+  }
 #endif
-  rtc_clock.begin(Wire);
 
   if (!radio_init()) { halt(); }
 
-  fast_rng.begin(radio.random(0x7FFFFFFF));
+  fast_rng.begin(radio_get_rng_seed());
 
   FILESYSTEM* fs;
-#if defined(NRF52_PLATFORM)
+#if defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
   InternalFS.begin();
   fs = &InternalFS;
   IdentityStore store(InternalFS, "");
@@ -647,13 +765,21 @@ void setup() {
   SPIFFS.begin(true);
   fs = &SPIFFS;
   IdentityStore store(SPIFFS, "/identity");
+#elif defined(RP2040_PLATFORM)
+  LittleFS.begin();
+  fs = &LittleFS;
+  IdentityStore store(LittleFS, "/identity");
+  store.begin();
 #else
   #error "need to define filesystem"
 #endif
   if (!store.load("_main", the_mesh.self_id)) {
     MESH_DEBUG_PRINTLN("Generating new keypair");
-    RadioNoiseListener rng(radio);
-    the_mesh.self_id = mesh::LocalIdentity(&rng);  // create new random identity
+    the_mesh.self_id = radio_new_identity();   // create new random identity
+    int count = 0;
+    while (count < 10 && (the_mesh.self_id.pub_key[0] == 0x00 || the_mesh.self_id.pub_key[0] == 0xFF)) {  // reserved id hashes
+      the_mesh.self_id = radio_new_identity(); count++;
+    }
     store.save("_main", the_mesh.self_id);
   }
 
@@ -662,11 +788,12 @@ void setup() {
 
   command[0] = 0;
 
+  sensors.begin();
+
   the_mesh.begin(fs);
 
 #ifdef DISPLAY_CLASS
-  display.begin();
-  ui_task.begin(the_mesh.getNodeName(), FIRMWARE_BUILD_DATE);
+  ui_task.begin(the_mesh.getNodePrefs(), FIRMWARE_BUILD_DATE, FIRMWARE_VERSION);
 #endif
 
   // send out initial Advertisement to the mesh
@@ -699,4 +826,5 @@ void loop() {
   }
 
   the_mesh.loop();
+  sensors.loop();
 }

examples/simple_room_server/UITask.cpp

@@ -1,7 +1,9 @@
 #include "UITask.h"
 #include <Arduino.h>
+#include <helpers/CommonCLI.h>
 
-#define AUTO_OFF_MILLIS   20000   // 20 seconds
+#define AUTO_OFF_MILLIS      20000  // 20 seconds
+#define BOOT_SCREEN_MILLIS   4000   // 4 seconds
 
 // 'meshcore', 128x13px
 static const uint8_t meshcore_logo [] PROGMEM = {
@@ -20,29 +22,62 @@ static const uint8_t meshcore_logo [] PROGMEM = {
     0xe3, 0xe3, 0x8f, 0xff, 0x1f, 0xfc, 0x3c, 0x0e, 0x1f, 0xf8, 0xff, 0xf8, 0x70, 0x3c, 0x7f, 0xf8, 
 };
 
-void UITask::begin(const char* node_name, const char* build_date) {
+void UITask::begin(NodePrefs* node_prefs, const char* build_date, const char* firmware_version) {
   _prevBtnState = HIGH;
   _auto_off = millis() + AUTO_OFF_MILLIS;
-  _node_name = node_name;
-  _build_date = build_date;
+  _node_prefs = node_prefs;
   _display->turnOn();
+
+  // strip off dash and commit hash by changing dash to null terminator
+  // e.g: v1.2.3-abcdef -> v1.2.3
+  char *version = strdup(firmware_version);
+  char *dash = strchr(version, '-');
+  if(dash){
+    *dash = 0;
+  }
+
+  // v1.2.3 (1 Jan 2025)
+  sprintf(_version_info, "%s (%s)", version, build_date);
 }
 
 void UITask::renderCurrScreen() {
   char tmp[80];
-  // render 'home' screen
-  _display->drawXbm(0, 0, meshcore_logo, 128, 13);
-  _display->setCursor(0, 20);
-  _display->setTextSize(1);
-  _display->print(_node_name);
+  if (millis() < BOOT_SCREEN_MILLIS) { // boot screen
+    // meshcore logo
+    _display->setColor(DisplayDriver::BLUE);
+    int logoWidth = 128;
+    _display->drawXbm((_display->width() - logoWidth) / 2, 3, meshcore_logo, logoWidth, 13);
 
-  sprintf(tmp, "Build: %s", _build_date);
-  _display->setCursor(0, 32);
-  _display->print(tmp);
-  _display->setCursor(0, 43);
-  _display->print("< Room Server >");
-  //_display->printf("freq : %03.2f sf %d\n", _prefs.freq, _prefs.sf);
-  //_display->printf("bw   : %03.2f cr %d\n", _prefs.bw, _prefs.cr);
+    // version info
+    _display->setColor(DisplayDriver::LIGHT);
+    _display->setTextSize(1);
+    uint16_t versionWidth = _display->getTextWidth(_version_info);
+    _display->setCursor((_display->width() - versionWidth) / 2, 22);
+    _display->print(_version_info);
+
+    // node type
+    const char* node_type = "< Room Server >";
+    uint16_t typeWidth = _display->getTextWidth(node_type);
+    _display->setCursor((_display->width() - typeWidth) / 2, 35);
+    _display->print(node_type);
+  } else {  // home screen
+    // node name
+    _display->setCursor(0, 0);
+    _display->setTextSize(1);
+    _display->setColor(DisplayDriver::GREEN);
+    _display->print(_node_prefs->node_name);
+
+    // freq / sf
+    _display->setCursor(0, 20);
+    _display->setColor(DisplayDriver::YELLOW);
+    sprintf(tmp, "FREQ: %06.3f SF%d", _node_prefs->freq, _node_prefs->sf);
+    _display->print(tmp);
+
+    // bw / cr
+    _display->setCursor(0, 30);
+    sprintf(tmp, "BW: %03.2f CR: %d", _node_prefs->bw, _node_prefs->cr);
+    _display->print(tmp);
+  }
 }
 
 void UITask::loop() {

examples/simple_room_server/UITask.h

@@ -1,18 +1,19 @@
 #pragma once
 
 #include <helpers/ui/DisplayDriver.h>
+#include <helpers/CommonCLI.h>
 
 class UITask {
   DisplayDriver* _display;
   unsigned long _next_read, _next_refresh, _auto_off;
   int _prevBtnState;
-  const char* _node_name;
-  const char* _build_date;
+  NodePrefs* _node_prefs;
+  char _version_info[32];
 
   void renderCurrScreen();
 public:
   UITask(DisplayDriver& display) : _display(&display) { _next_read = _next_refresh = 0; }
-  void begin(const char* node_name, const char* build_date);
+  void begin(NodePrefs* node_prefs, const char* build_date, const char* firmware_version);
 
   void loop();
 };

examples/simple_room_server/main.cpp

@@ -3,17 +3,16 @@
 
 #if defined(NRF52_PLATFORM)
   #include <InternalFileSystem.h>
+#elif defined(RP2040_PLATFORM)
+  #include <LittleFS.h>
 #elif defined(ESP32)
   #include <SPIFFS.h>
 #endif
 
-#define RADIOLIB_STATIC_ONLY 1
-#include <RadioLib.h>
 #include <helpers/ArduinoHelpers.h>
 #include <helpers/StaticPoolPacketManager.h>
 #include <helpers/SimpleMeshTables.h>
 #include <helpers/IdentityStore.h>
-#include <helpers/AutoDiscoverRTCClock.h>
 #include <helpers/AdvertDataHelpers.h>
 #include <helpers/TxtDataHelpers.h>
 #include <helpers/CommonCLI.h>
@@ -23,11 +22,11 @@
 /* ------------------------------ Config -------------------------------- */
 
 #ifndef FIRMWARE_BUILD_DATE
-  #define FIRMWARE_BUILD_DATE   "25 Mar 2025"
+  #define FIRMWARE_BUILD_DATE   "2 Jul 2025"
 #endif
 
 #ifndef FIRMWARE_VERSION
-  #define FIRMWARE_VERSION   "v1.4.1"
+  #define FIRMWARE_VERSION   "v1.7.2"
 #endif
 
 #ifndef LORA_FREQ
@@ -65,18 +64,26 @@
 #endif
 
 #ifndef MAX_UNSYNCED_POSTS
-  #define MAX_UNSYNCED_POSTS    16
+  #define MAX_UNSYNCED_POSTS    32
+#endif
+
+#ifndef SERVER_RESPONSE_DELAY
+  #define SERVER_RESPONSE_DELAY   300
+#endif
+
+#ifndef TXT_ACK_DELAY
+  #define TXT_ACK_DELAY     200
 #endif
 
 #ifdef DISPLAY_CLASS
-  #include <helpers/ui/SSD1306Display.h>
-
-  static DISPLAY_CLASS  display;
-
   #include "UITask.h"
   static UITask ui_task(display);
 #endif
 
+#define FIRMWARE_ROLE "room_server"
+
+#define PACKET_LOG_FILE  "/packet_log"
+
 /* ------------------------------ Code -------------------------------- */
 
 enum RoomPermission {
@@ -110,23 +117,26 @@ struct PostInfo {
 
 #define REPLY_DELAY_MILLIS         1500
 #define PUSH_NOTIFY_DELAY_MILLIS   2000
-#define SYNC_PUSH_INTERVAL         2000
+#define SYNC_PUSH_INTERVAL         1200
 
 #define PUSH_ACK_TIMEOUT_FLOOD    12000
 #define PUSH_TIMEOUT_BASE          4000
 #define PUSH_ACK_TIMEOUT_FACTOR    2000
 
-#define CLIENT_KEEP_ALIVE_SECS   128
+#define POST_SYNC_DELAY_SECS       6
 
-#define REQ_TYPE_GET_STATUS      0x01   // same as _GET_STATS
-#define REQ_TYPE_KEEP_ALIVE      0x02
+#define CLIENT_KEEP_ALIVE_SECS     0     // Now Disabled (was 128)
+
+#define REQ_TYPE_GET_STATUS          0x01   // same as _GET_STATS
+#define REQ_TYPE_KEEP_ALIVE          0x02
+#define REQ_TYPE_GET_TELEMETRY_DATA  0x03
 
 #define RESP_SERVER_LOGIN_OK      0   // response to ANON_REQ
 
 struct ServerStats {
   uint16_t batt_milli_volts;
   uint16_t curr_tx_queue_len;
-  uint16_t curr_free_queue_len;
+  int16_t  noise_floor;
   int16_t  last_rssi;
   uint32_t n_packets_recv;
   uint32_t n_packets_sent;
@@ -134,18 +144,16 @@ struct ServerStats {
   uint32_t total_up_time_secs;
   uint32_t n_sent_flood, n_sent_direct;
   uint32_t n_recv_flood, n_recv_direct;
-  uint16_t n_full_events;
+  uint16_t err_events;          // was 'n_full_events'
   int16_t  last_snr;   // x 4
   uint16_t n_direct_dups, n_flood_dups;
   uint16_t n_posted, n_post_push;
 };
 
 class MyMesh : public mesh::Mesh, public CommonCLICallbacks {
-  RadioLibWrapper* my_radio;
   FILESYSTEM* _fs;
-  RADIO_CLASS* _phy;
-  mesh::MainBoard* _board;
   unsigned long next_local_advert, next_flood_advert;
+  bool _logging;
   NodePrefs _prefs;
   CommonCLI _cli;
   uint8_t reply_data[MAX_PACKET_PAYLOAD];
@@ -156,6 +164,7 @@ class MyMesh : public mesh::Mesh, public CommonCLICallbacks {
   int next_client_idx;  // for round-robin polling
   int next_post_idx;
   PostInfo posts[MAX_UNSYNCED_POSTS];   // cyclic queue
+  CayenneLPP telemetry;
 
   ClientInfo* putClient(const mesh::Identity& id) {
     for (int i = 0; i < num_clients; i++) {
@@ -205,7 +214,10 @@ class MyMesh : public mesh::Mesh, public CommonCLICallbacks {
   void pushPostToClient(ClientInfo* client, PostInfo& post) {
     int len = 0;
     memcpy(&reply_data[len], &post.post_timestamp, 4); len += 4;   // this is a PAST timestamp... but should be accepted by client
-    reply_data[len++] = (TXT_TYPE_SIGNED_PLAIN << 2);  // 'signed' plain text
+
+    uint8_t attempt;
+    getRNG()->random(&attempt, 1);   // need this for re-tries, so packet hash (and ACK) will be different
+    reply_data[len++] = (TXT_TYPE_SIGNED_PLAIN << 2) | (attempt & 3);  // 'signed' plain text
 
     // encode prefix of post.author.pub_key
     memcpy(&reply_data[len], post.author.pub_key, 4); len += 4;   // just first 4 bytes
@@ -233,6 +245,17 @@ class MyMesh : public mesh::Mesh, public CommonCLICallbacks {
     }
   }
 
+  uint8_t getUnsyncedCount(ClientInfo* client) {
+    uint8_t count = 0;
+    for (int k = 0; k < MAX_UNSYNCED_POSTS; k++) {
+      if (posts[k].post_timestamp > client->sync_since   // is new post for this Client?
+        && !posts[k].author.matches(client->id)) {    // don't push posts to the author
+        count++;
+      }
+    }
+    return count;
+  }
+
   bool processAck(const uint8_t *data) {
     for (int i = 0; i < num_clients; i++) {
       auto client = &known_clients[i];
@@ -257,6 +280,61 @@ class MyMesh : public mesh::Mesh, public CommonCLICallbacks {
    return createAdvert(self_id, app_data, app_data_len);
   }
 
+  File openAppend(const char* fname) {
+    #if defined(NRF52_PLATFORM)
+      return _fs->open(fname, FILE_O_WRITE);
+    #elif defined(RP2040_PLATFORM)
+      return _fs->open(fname, "a");
+    #else
+      return _fs->open(fname, "a", true);
+    #endif
+    }
+
+  int handleRequest(ClientInfo* sender, uint32_t sender_timestamp, uint8_t* payload, size_t payload_len) {
+    // uint32_t now = getRTCClock()->getCurrentTimeUnique();
+    // memcpy(reply_data, &now, 4);   // response packets always prefixed with timestamp
+    memcpy(reply_data, &sender_timestamp, 4);   // reflect sender_timestamp back in response packet (kind of like a 'tag')
+   
+    switch (payload[0]) {
+      case REQ_TYPE_GET_STATUS: {
+        ServerStats stats;
+        stats.batt_milli_volts = board.getBattMilliVolts();
+        stats.curr_tx_queue_len = _mgr->getOutboundCount(0xFFFFFFFF);
+        stats.noise_floor = (int16_t)_radio->getNoiseFloor();
+        stats.last_rssi = (int16_t) radio_driver.getLastRSSI();
+        stats.n_packets_recv = radio_driver.getPacketsRecv();
+        stats.n_packets_sent = radio_driver.getPacketsSent();
+        stats.total_air_time_secs = getTotalAirTime() / 1000;
+        stats.total_up_time_secs = _ms->getMillis() / 1000;
+        stats.n_sent_flood = getNumSentFlood();
+        stats.n_sent_direct = getNumSentDirect();
+        stats.n_recv_flood = getNumRecvFlood();
+        stats.n_recv_direct = getNumRecvDirect();
+        stats.err_events = _err_flags;
+        stats.last_snr = (int16_t)(radio_driver.getLastSNR() * 4);
+        stats.n_direct_dups = ((SimpleMeshTables *)getTables())->getNumDirectDups();
+        stats.n_flood_dups = ((SimpleMeshTables *)getTables())->getNumFloodDups();
+        stats.n_posted = _num_posted;
+        stats.n_post_push = _num_post_pushes;
+
+        memcpy(&reply_data[4], &stats, sizeof(stats));
+        return 4 + sizeof(stats);
+      }
+
+      case REQ_TYPE_GET_TELEMETRY_DATA: {
+        telemetry.reset();
+        telemetry.addVoltage(TELEM_CHANNEL_SELF, (float)board.getBattMilliVolts() / 1000.0f);
+        // query other sensors -- target specific
+        sensors.querySensors(sender->permission == RoomPermission::ADMIN ? 0xFF : 0x00, telemetry);
+
+        uint8_t tlen = telemetry.getSize();
+        memcpy(&reply_data[4], telemetry.getBuffer(), tlen);
+        return 4 + tlen;  // reply_len
+      }
+    }
+    return 0;  // unknown command
+  }
+   
 protected:
   float getAirtimeBudgetFactor() const override {
     return _prefs.airtime_factor;
@@ -271,6 +349,55 @@ protected:
     #endif
   }
 
+  void logRx(mesh::Packet* pkt, int len, float score) override {
+    if (_logging) {
+      File f = openAppend(PACKET_LOG_FILE);
+      if (f) {
+        f.print(getLogDateTime());
+        f.printf(": RX, len=%d (type=%d, route=%s, payload_len=%d) SNR=%d RSSI=%d score=%d",
+          len, pkt->getPayloadType(), pkt->isRouteDirect() ? "D" : "F", pkt->payload_len,
+          (int)_radio->getLastSNR(), (int)_radio->getLastRSSI(), (int)(score*1000));
+
+        if (pkt->getPayloadType() == PAYLOAD_TYPE_PATH || pkt->getPayloadType() == PAYLOAD_TYPE_REQ
+          || pkt->getPayloadType() == PAYLOAD_TYPE_RESPONSE || pkt->getPayloadType() == PAYLOAD_TYPE_TXT_MSG) {
+          f.printf(" [%02X -> %02X]\n", (uint32_t)pkt->payload[1], (uint32_t)pkt->payload[0]);
+        } else {
+          f.printf("\n");
+        }
+        f.close();
+      }
+    }
+  }
+  void logTx(mesh::Packet* pkt, int len) override {
+    if (_logging) {
+      File f = openAppend(PACKET_LOG_FILE);
+      if (f) {
+        f.print(getLogDateTime());
+        f.printf(": TX, len=%d (type=%d, route=%s, payload_len=%d)",
+          len, pkt->getPayloadType(), pkt->isRouteDirect() ? "D" : "F", pkt->payload_len);
+
+        if (pkt->getPayloadType() == PAYLOAD_TYPE_PATH || pkt->getPayloadType() == PAYLOAD_TYPE_REQ
+          || pkt->getPayloadType() == PAYLOAD_TYPE_RESPONSE || pkt->getPayloadType() == PAYLOAD_TYPE_TXT_MSG) {
+          f.printf(" [%02X -> %02X]\n", (uint32_t)pkt->payload[1], (uint32_t)pkt->payload[0]);
+        } else {
+          f.printf("\n");
+        }
+        f.close();
+      }
+    }
+  }
+  void logTxFail(mesh::Packet* pkt, int len) override {
+    if (_logging) {
+      File f = openAppend(PACKET_LOG_FILE);
+      if (f) {
+        f.print(getLogDateTime());
+        f.printf(": TX FAIL!, len=%d (type=%d, route=%s, payload_len=%d)\n",
+          len, pkt->getPayloadType(), pkt->isRouteDirect() ? "D" : "F", pkt->payload_len);
+        f.close();
+      }
+    }
+  }
+
   int calcRxDelay(float score, uint32_t air_time) const override {
     if (_prefs.rx_delay_base <= 0.0f) return 0;
     return (int) ((pow(_prefs.rx_delay_base, 0.85f - score) - 1.0) * air_time);
@@ -292,6 +419,12 @@ protected:
     uint32_t t = (_radio->getEstAirtimeFor(packet->path_len + packet->payload_len + 2) * _prefs.direct_tx_delay_factor);
     return getRNG()->nextInt(0, 6)*t;
   }
+  int getInterferenceThreshold() const override {
+    return _prefs.interference_threshold;
+  }
+  int getAGCResetInterval() const override {
+    return ((int)_prefs.agc_reset_interval) * 4000;   // milliseconds
+  }
 
   bool allowPacketForward(const mesh::Packet* packet) override {
     if (_prefs.disable_fwd) return false;
@@ -342,7 +475,7 @@ protected:
       reply_data[4] = RESP_SERVER_LOGIN_OK;
       reply_data[5] = (CLIENT_KEEP_ALIVE_SECS >> 4);  // NEW: recommended keep-alive interval (secs / 16)
       reply_data[6] = (perm == RoomPermission::ADMIN ? 1 : (perm == RoomPermission::GUEST ? 0 : 2));
-      reply_data[7] = 0;  // FUTURE: reserved
+      reply_data[7] = getUnsyncedCount(client);  // NEW
       memcpy(&reply_data[8], "OK", 2);  // REVISIT: not really needed
 
       next_push = futureMillis(PUSH_NOTIFY_DELAY_MILLIS);  // delay next push, give RESPONSE packet time to arrive first
@@ -351,14 +484,14 @@ protected:
         // let this sender know path TO here, so they can use sendDirect(), and ALSO encode the response
         mesh::Packet* path = createPathReturn(sender, client->secret, packet->path, packet->path_len,
                                               PAYLOAD_TYPE_RESPONSE, reply_data, 8 + 2);
-        if (path) sendFlood(path);
+        if (path) sendFlood(path, SERVER_RESPONSE_DELAY);
       } else {
         mesh::Packet* reply = createDatagram(PAYLOAD_TYPE_RESPONSE, sender, client->secret, reply_data, 8 + 2);
         if (reply) {
           if (client->out_path_len >= 0) {  // we have an out_path, so send DIRECT
-            sendDirect(reply, client->out_path, client->out_path_len);
+            sendDirect(reply, client->out_path, client->out_path_len, SERVER_RESPONSE_DELAY);
           } else {
-            sendFlood(reply);
+            sendFlood(reply, SERVER_RESPONSE_DELAY);
           }
         }
       }
@@ -448,12 +581,12 @@ protected:
           mesh::Packet* ack = createAck(ack_hash);
           if (ack) {
             if (client->out_path_len < 0) {
-              sendFlood(ack);
+              sendFlood(ack, TXT_ACK_DELAY);
             } else {
-              sendDirect(ack, client->out_path, client->out_path_len);
+              sendDirect(ack, client->out_path, client->out_path_len, TXT_ACK_DELAY);
             }
           }
-          delay_millis = REPLY_DELAY_MILLIS;
+          delay_millis = TXT_ACK_DELAY + REPLY_DELAY_MILLIS;
         } else {
           delay_millis = 0;
         }
@@ -472,9 +605,9 @@ protected:
           auto reply = createDatagram(PAYLOAD_TYPE_TXT_MSG, client->id, secret, temp, 5 + text_len);
           if (reply) {
             if (client->out_path_len < 0) {
-              sendFlood(reply, delay_millis);
+              sendFlood(reply, delay_millis + SERVER_RESPONSE_DELAY);
             } else {
-              sendDirect(reply, client->out_path, client->out_path_len, delay_millis);
+              sendDirect(reply, client->out_path, client->out_path_len, delay_millis + SERVER_RESPONSE_DELAY);
             }
           }
         }
@@ -516,47 +649,26 @@ protected:
 
             auto reply = createAck(ack_hash);
             if (reply) {
-              sendDirect(reply, client->out_path, client->out_path_len);
+              reply->payload[reply->payload_len++] = getUnsyncedCount(client);  // NEW: add unsynced counter to end of ACK packet
+              sendDirect(reply, client->out_path, client->out_path_len, SERVER_RESPONSE_DELAY);
             }
           }
-        } else if (data[4] == REQ_TYPE_GET_STATUS) {
-          ServerStats stats;
-          stats.batt_milli_volts = board.getBattMilliVolts();
-          stats.curr_tx_queue_len = _mgr->getOutboundCount();
-          stats.curr_free_queue_len = _mgr->getFreeCount();
-          stats.last_rssi = (int16_t) my_radio->getLastRSSI();
-          stats.n_packets_recv = my_radio->getPacketsRecv();
-          stats.n_packets_sent = my_radio->getPacketsSent();
-          stats.total_air_time_secs = getTotalAirTime() / 1000;
-          stats.total_up_time_secs = _ms->getMillis() / 1000;
-          stats.n_sent_flood = getNumSentFlood();
-          stats.n_sent_direct = getNumSentDirect();
-          stats.n_recv_flood = getNumRecvFlood();
-          stats.n_recv_direct = getNumRecvDirect();
-          stats.n_full_events = getNumFullEvents();
-          stats.last_snr = (int16_t)(my_radio->getLastSNR() * 4);
-          stats.n_direct_dups = ((SimpleMeshTables *)getTables())->getNumDirectDups();
-          stats.n_flood_dups = ((SimpleMeshTables *)getTables())->getNumFloodDups();
-          stats.n_posted = _num_posted;
-          stats.n_post_push = _num_post_pushes;
-
-          now = getRTCClock()->getCurrentTimeUnique();
-          memcpy(reply_data, &now, 4);   // response packets always prefixed with timestamp
-          memcpy(&reply_data[4], &stats, sizeof(stats));
-          uint8_t reply_len = 4 + sizeof(stats);
-  
-          if (packet->isRouteFlood()) {
-            // let this sender know path TO here, so they can use sendDirect(), and ALSO encode the response
-            mesh::Packet* path = createPathReturn(client->id, secret, packet->path, packet->path_len,
-                                                  PAYLOAD_TYPE_RESPONSE, reply_data, reply_len);
-            if (path) sendFlood(path);
-          } else {
-            mesh::Packet* reply = createDatagram(PAYLOAD_TYPE_RESPONSE, client->id, secret, reply_data, reply_len);
-            if (reply) {
-              if (client->out_path_len >= 0) {  // we have an out_path, so send DIRECT
-                sendDirect(reply, client->out_path, client->out_path_len);
-              } else {
-                sendFlood(reply);
+        } else {
+          int reply_len = handleRequest(client, sender_timestamp, &data[4], len - 4);
+          if (reply_len > 0) {  // valid command
+            if (packet->isRouteFlood()) {
+              // let this sender know path TO here, so they can use sendDirect(), and ALSO encode the response
+              mesh::Packet* path = createPathReturn(client->id, secret, packet->path, packet->path_len,
+                                                    PAYLOAD_TYPE_RESPONSE, reply_data, reply_len);
+              if (path) sendFlood(path, SERVER_RESPONSE_DELAY);
+            } else {
+              mesh::Packet* reply = createDatagram(PAYLOAD_TYPE_RESPONSE, client->id, secret, reply_data, reply_len);
+              if (reply) {
+                if (client->out_path_len >= 0) {  // we have an out_path, so send DIRECT
+                  sendDirect(reply, client->out_path, client->out_path_len, SERVER_RESPONSE_DELAY);
+                } else {
+                  sendFlood(reply, SERVER_RESPONSE_DELAY);
+                }
               }
             }
           }
@@ -593,12 +705,12 @@ protected:
   }
 
 public:
-  MyMesh(RADIO_CLASS& phy, mesh::MainBoard& board, RadioLibWrapper& radio, mesh::MillisecondClock& ms, mesh::RNG& rng, mesh::RTCClock& rtc, mesh::MeshTables& tables)
+  MyMesh(mesh::MainBoard& board, mesh::Radio& radio, mesh::MillisecondClock& ms, mesh::RNG& rng, mesh::RTCClock& rtc, mesh::MeshTables& tables)
      : mesh::Mesh(radio, ms, rng, rtc, *new StaticPoolPacketManager(32), tables),
-        _phy(&phy), _board(&board), _cli(board, this, &_prefs, this)
+      _cli(board, rtc, &_prefs, this), telemetry(MAX_PACKET_PAYLOAD - 4)
   {
-    my_radio = &radio;
     next_local_advert = next_flood_advert = 0;
+    _logging = false;
 
     // defaults
     memset(&_prefs, 0, sizeof(_prefs));
@@ -618,6 +730,7 @@ public:
     _prefs.advert_interval = 1;  // default to 2 minutes for NEW installs
     _prefs.flood_advert_interval = 3;   // 3 hours
     _prefs.flood_max = 64;
+    _prefs.interference_threshold = 0;  // disabled 
   #ifdef ROOM_PASSWORD
     StrHelper::strncpy(_prefs.guest_password, ROOM_PASSWORD, sizeof(_prefs.guest_password));
   #endif
@@ -638,18 +751,20 @@ public:
     // load persisted prefs
     _cli.loadPrefs(_fs);
 
-    _phy->setFrequency(_prefs.freq);
-    _phy->setSpreadingFactor(_prefs.sf);
-    _phy->setBandwidth(_prefs.bw);
-    _phy->setCodingRate(_prefs.cr);
-    _phy->setOutputPower(_prefs.tx_power_dbm);
+    radio_set_params(_prefs.freq, _prefs.bw, _prefs.sf, _prefs.cr);
+    radio_set_tx_power(_prefs.tx_power_dbm);
 
     updateAdvertTimer();
+    updateFloodAdvertTimer();
   }
 
   const char* getFirmwareVer() override { return FIRMWARE_VERSION; }
   const char* getBuildDate() override { return FIRMWARE_BUILD_DATE; }
+  const char* getRole() override { return FIRMWARE_ROLE; }
   const char* getNodeName() { return _prefs.node_name; }
+  NodePrefs* getNodePrefs() { 
+    return &_prefs; 
+  }
 
   void savePrefs() override {
     _cli.savePrefs(_fs);
@@ -658,6 +773,8 @@ public:
   bool formatFileSystem() override {
     #if defined(NRF52_PLATFORM)
       return InternalFS.format();
+    #elif defined(RP2040_PLATFORM)
+      return LittleFS.format();
     #elif defined(ESP32)
       return SPIFFS.format();
     #else
@@ -690,12 +807,42 @@ public:
     }
   }
 
-  void setLoggingOn(bool enable) override { /* no-op */ }
-  void eraseLogFile() override { /* no-op */ }
-  void dumpLogFile() override { /* no-op */ }
+  void setLoggingOn(bool enable) override { _logging = enable; }
+
+  void eraseLogFile() override {
+    _fs->remove(PACKET_LOG_FILE);
+  }
+
+  void dumpLogFile() override {
+  #if defined(RP2040_PLATFORM)
+    File f = _fs->open(PACKET_LOG_FILE, "r");
+  #else
+    File f = _fs->open(PACKET_LOG_FILE);
+  #endif
+    if (f) {
+      while (f.available()) {
+        int c = f.read();
+        if (c < 0) break;
+        Serial.print((char)c);
+      }
+      f.close();
+    }
+  }
 
   void setTxPower(uint8_t power_dbm) override {
-    _phy->setOutputPower(power_dbm);
+    radio_set_tx_power(power_dbm);
+  }
+
+  void formatNeighborsReply(char *reply) override {
+    strcpy(reply, "not supported");
+  }
+
+  const uint8_t* getSelfIdPubKey() override { return self_id.pub_key; }
+
+  void clearStats() override {
+    radio_driver.resetStats();
+    resetStats();
+    ((SimpleMeshTables *)getTables())->resetStats();
   }
 
   void loop() {
@@ -713,14 +860,18 @@ public:
       }
       // check next Round-Robin client, and sync next new post
       auto client = &known_clients[next_client_idx];
+      bool did_push = false;
       if (client->pending_ack == 0 && client->last_activity != 0 && client->push_failures < 3) {  // not already waiting for ACK, AND not evicted, AND retries not max
         MESH_DEBUG_PRINTLN("loop - checking for client %02X", (uint32_t) client->id.pub_key[0]);
+        uint32_t now = getRTCClock()->getCurrentTime();
         for (int k = 0, idx = next_post_idx; k < MAX_UNSYNCED_POSTS; k++) {
-          if (posts[idx].post_timestamp > client->sync_since   // is new post for this Client?
-            && !posts[idx].author.matches(client->id)) {    // don't push posts to the author
+          auto p = &posts[idx];
+          if (now >= p->post_timestamp + POST_SYNC_DELAY_SECS && p->post_timestamp > client->sync_since   // is new post for this Client?
+            && !p->author.matches(client->id)) {    // don't push posts to the author
             // push this post to Client, then wait for ACK
-            pushPostToClient(client, posts[idx]);
-            MESH_DEBUG_PRINTLN("loop - pushed to client %02X: %s", (uint32_t) client->id.pub_key[0], posts[idx].text);
+            pushPostToClient(client, *p);
+            did_push = true;
+            MESH_DEBUG_PRINTLN("loop - pushed to client %02X: %s", (uint32_t) client->id.pub_key[0], p->text);
             break;
           }
           idx = (idx + 1) % MAX_UNSYNCED_POSTS;   // wrap to start of cyclic queue
@@ -730,7 +881,12 @@ public:
       }
       next_client_idx = (next_client_idx + 1) % num_clients;  // round robin polling for each client
 
-      next_push = futureMillis(SYNC_PUSH_INTERVAL);
+      if (did_push) {
+        next_push = futureMillis(SYNC_PUSH_INTERVAL);
+      } else {
+        // were no unsynced posts for curr client, so proccess next client much quicker! (in next loop())
+        next_push = futureMillis(SYNC_PUSH_INTERVAL / 8);
+      }
     }
 
     if (next_flood_advert && millisHasNowPassed(next_flood_advert)) {
@@ -756,15 +912,7 @@ public:
 
 StdRNG fast_rng;
 SimpleMeshTables tables;
-
-#ifdef ESP32
-ESP32RTCClock fallback_clock;
-#else
-VolatileRTCClock fallback_clock;
-#endif
-AutoDiscoverRTCClock rtc_clock(fallback_clock);
-
-MyMesh the_mesh(radio, board, *new WRAPPER_CLASS(radio, board), *new ArduinoMillis(), fast_rng, rtc_clock, tables);
+MyMesh the_mesh(board, radio_driver, *new ArduinoMillis(), fast_rng, rtc_clock, tables);
 
 void halt() {
   while (1) ;
@@ -777,20 +925,29 @@ void setup() {
   delay(1000);
 
   board.begin();
-#ifdef ESP32
-  fallback_clock.begin();
+
+#ifdef DISPLAY_CLASS
+  if (display.begin()) {
+    display.startFrame();
+    display.print("Please wait...");
+    display.endFrame();
+  }
 #endif
-  rtc_clock.begin(Wire);
 
   if (!radio_init()) { halt(); }
 
-  fast_rng.begin(radio.random(0x7FFFFFFF));
+  fast_rng.begin(radio_get_rng_seed());
 
   FILESYSTEM* fs;
 #if defined(NRF52_PLATFORM)
   InternalFS.begin();
   fs = &InternalFS;
   IdentityStore store(InternalFS, "");
+#elif defined(RP2040_PLATFORM)
+  LittleFS.begin();
+  fs = &LittleFS;
+  IdentityStore store(LittleFS, "/identity");
+  store.begin();
 #elif defined(ESP32)
   SPIFFS.begin(true);
   fs = &SPIFFS;
@@ -799,8 +956,11 @@ void setup() {
   #error "need to define filesystem"
 #endif
   if (!store.load("_main", the_mesh.self_id)) {
-    RadioNoiseListener rng(radio);
-    the_mesh.self_id = mesh::LocalIdentity(&rng);  // create new random identity
+    the_mesh.self_id = radio_new_identity();   // create new random identity
+    int count = 0;
+    while (count < 10 && (the_mesh.self_id.pub_key[0] == 0x00 || the_mesh.self_id.pub_key[0] == 0xFF)) {  // reserved id hashes
+      the_mesh.self_id = radio_new_identity(); count++;
+    }
     store.save("_main", the_mesh.self_id);
   }
 
@@ -809,11 +969,12 @@ void setup() {
 
   command[0] = 0;
 
+  sensors.begin();
+
   the_mesh.begin(fs);
 
 #ifdef DISPLAY_CLASS
-  display.begin();
-  ui_task.begin(the_mesh.getNodeName(), FIRMWARE_BUILD_DATE);
+  ui_task.begin(the_mesh.getNodePrefs(), FIRMWARE_BUILD_DATE, FIRMWARE_VERSION);
 #endif
 
   // send out initial Advertisement to the mesh
@@ -846,4 +1007,5 @@ void loop() {
   }
 
   the_mesh.loop();
+  sensors.loop();
 }

examples/simple_secure_chat/main.cpp

@@ -3,13 +3,12 @@
 
 #if defined(NRF52_PLATFORM)
   #include <InternalFileSystem.h>
+#elif defined(RP2040_PLATFORM)
+  #include <LittleFS.h>
 #elif defined(ESP32)
   #include <SPIFFS.h>
 #endif
 
-#define RADIOLIB_STATIC_ONLY 1
-#include <RadioLib.h>
-#include <helpers/RadioLibWrappers.h>
 #include <helpers/ArduinoHelpers.h>
 #include <helpers/StaticPoolPacketManager.h>
 #include <helpers/SimpleMeshTables.h>
@@ -91,7 +90,11 @@ class MyMesh : public BaseChatMesh, ContactVisitor {
 
   void loadContacts() {
     if (_fs->exists("/contacts")) {
+    #if defined(RP2040_PLATFORM)
+      File file = _fs->open("/contacts", "r");
+    #else
       File file = _fs->open("/contacts");
+    #endif
       if (file) {
         bool full = false;
         while (!full) {
@@ -124,8 +127,10 @@ class MyMesh : public BaseChatMesh, ContactVisitor {
 
   void saveContacts() {
 #if defined(NRF52_PLATFORM)
+    _fs->remove("/contacts");
     File file = _fs->open("/contacts", FILE_O_WRITE);
-    if (file) { file.seek(0); file.truncate(); }
+#elif defined(RP2040_PLATFORM)
+    File file = _fs->open("/contacts", "w");
 #else
     File file = _fs->open("/contacts", "w", true);
 #endif
@@ -193,7 +198,11 @@ protected:
     return 0;  // disable rxdelay
   }
 
-  void onDiscoveredContact(ContactInfo& contact, bool is_new) override {
+  bool allowPacketForward(const mesh::Packet* packet) override {
+    return true;
+  }
+
+  void onDiscoveredContact(ContactInfo& contact, bool is_new, uint8_t path_len, const uint8_t* path) override {
     // TODO: if not in favs,  prompt to add as fav(?)
 
     Serial.printf("ADVERT from -> %s\n", contact.name);
@@ -245,6 +254,10 @@ protected:
     Serial.printf("   %s\n", text);
   }
 
+  uint8_t onContactRequest(const ContactInfo& contact, uint32_t sender_timestamp, const uint8_t* data, uint8_t len, uint8_t* reply) override {
+    return 0;  // unknown
+  }
+
   void onContactResponse(const ContactInfo& contact, const uint8_t* data, uint8_t len) override {
     // not supported
   }
@@ -262,8 +275,7 @@ protected:
   }
 
 public:
-
-  MyMesh(RadioLibWrapper& radio, mesh::RNG& rng, mesh::RTCClock& rtc, SimpleMeshTables& tables)
+  MyMesh(mesh::Radio& radio, StdRNG& rng, mesh::RTCClock& rtc, SimpleMeshTables& tables)
      : BaseChatMesh(radio, *new ArduinoMillis(), rng, rtc, *new StaticPoolPacketManager(16), tables)
   {
     // defaults
@@ -287,17 +299,36 @@ public:
 
   #if defined(NRF52_PLATFORM)
     IdentityStore store(fs, "");
+  #elif defined(RP2040_PLATFORM)
+    IdentityStore store(fs, "/identity");
+    store.begin();
   #else
     IdentityStore store(fs, "/identity");
   #endif
     if (!store.load("_main", self_id, _prefs.node_name, sizeof(_prefs.node_name))) {  // legacy: node_name was from identity file
+      // Need way to get some entropy to seed RNG
+      Serial.println("Press ENTER to generate key:");
+      char c = 0;
+      while (c != '\n') {   // wait for ENTER to be pressed
+        if (Serial.available()) c = Serial.read();
+      }
+      ((StdRNG *)getRNG())->begin(millis());
+
       self_id = mesh::LocalIdentity(getRNG());  // create new random identity
+      int count = 0;
+      while (count < 10 && (self_id.pub_key[0] == 0x00 || self_id.pub_key[0] == 0xFF)) {  // reserved id hashes
+        self_id = mesh::LocalIdentity(getRNG()); count++;
+      }
       store.save("_main", self_id);
     }
 
     // load persisted prefs
     if (_fs->exists("/node_prefs")) {
+    #if defined(RP2040_PLATFORM)
+      File file = _fs->open("/node_prefs", "r");
+    #else
       File file = _fs->open("/node_prefs");
+    #endif
       if (file) {
         file.read((uint8_t *) &_prefs, sizeof(_prefs));
         file.close();
@@ -310,8 +341,10 @@ public:
 
   void savePrefs() {
 #if defined(NRF52_PLATFORM)
+    _fs->remove("/node_prefs");
     File file = _fs->open("/node_prefs", FILE_O_WRITE);
-    if (file) { file.seek(0); file.truncate(); }
+#elif defined(RP2040_PLATFORM)
+    File file = _fs->open("/node_prefs", "w");
 #else
     File file = _fs->open("/node_prefs", "w", true);
 #endif
@@ -325,6 +358,8 @@ public:
     Serial.println("===== MeshCore Chat Terminal =====");
     Serial.println();
     Serial.printf("WELCOME  %s\n", _prefs.node_name);
+    mesh::Utils::printHex(Serial, self_id.pub_key, PUB_KEY_SIZE);
+    Serial.println();
     Serial.println("   (enter 'help' for basic commands)");
     Serial.println();
   }
@@ -513,7 +548,7 @@ public:
 
 StdRNG fast_rng;
 SimpleMeshTables tables;
-MyMesh the_mesh(*new WRAPPER_CLASS(radio, board), fast_rng, *new VolatileRTCClock(), tables);
+MyMesh the_mesh(radio_driver, fast_rng, *new VolatileRTCClock(), tables); // TODO: test with 'rtc_clock' in target.cpp
 
 void halt() {
   while (1) ;
@@ -526,11 +561,14 @@ void setup() {
 
   if (!radio_init()) { halt(); }
 
-  fast_rng.begin(radio.random(0x7FFFFFFF));
+  fast_rng.begin(radio_get_rng_seed());
 
 #if defined(NRF52_PLATFORM)
   InternalFS.begin();
   the_mesh.begin(InternalFS);
+#elif defined(RP2040_PLATFORM)
+  LittleFS.begin();
+  the_mesh.begin(LittleFS);
 #elif defined(ESP32)
   SPIFFS.begin(true);
   the_mesh.begin(SPIFFS);
@@ -538,12 +576,8 @@ void setup() {
   #error "need to define filesystem"
 #endif
 
-  if (LORA_FREQ != the_mesh.getFreqPref()) {
-    radio.setFrequency(the_mesh.getFreqPref());
-  }
-  if (LORA_TX_POWER != the_mesh.getTxPowerPref()) {
-    radio.setOutputPower(the_mesh.getTxPowerPref());
-  }
+  radio_set_params(the_mesh.getFreqPref(), LORA_BW, LORA_SF, LORA_CR);
+  radio_set_tx_power(the_mesh.getTxPowerPref());
 
   the_mesh.showWelcome();
 

logo/meshcore.svg

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
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+</svg>

logo/meshcore_tm.svg

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
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+    <path d="M116.642,17.751C116.642,17.751 128.586,17.751 128.586,17.751C128.851,17.751 129.105,17.538 129.152,17.278L129.651,14.504C129.698,14.242 129.521,14.031 129.256,14.031L120.955,14.031C120.866,14.031 120.808,13.96 120.823,13.873L121.069,12.508C121.084,12.421 121.169,12.35 121.257,12.35L127.934,12.35C128.2,12.35 128.454,12.137 128.501,11.877L128.945,9.421C128.992,9.159 128.815,8.949 128.55,8.949L121.873,8.949C121.785,8.949 121.726,8.877 121.741,8.79L122.005,7.328C122.02,7.241 122.105,7.17 122.193,7.17L130.495,7.17C130.76,7.17 131.014,6.957 131.061,6.695L131.545,4.021C131.592,3.761 131.415,3.548 131.15,3.548L119.206,3.548C118.763,3.548 118.34,3.902 118.261,4.337L115.98,16.962C115.902,17.397 116.198,17.751 116.642,17.751Z" style="fill:white;fill-rule:nonzero;"/>
+    <path d="M134.674,0C134.674,0 132.059,0 132.059,0C131.965,0 131.877,0.074 131.86,0.166L131.783,0.594C131.766,0.686 131.828,0.76 131.921,0.76L132.745,0.76C132.764,0.76 132.776,0.775 132.773,0.793L132.406,2.819C132.39,2.91 132.452,2.984 132.545,2.984L133.108,2.984C133.201,2.984 133.29,2.91 133.307,2.819L133.673,0.793C133.676,0.775 133.694,0.76 133.713,0.76L134.536,0.76C134.629,0.76 134.718,0.686 134.735,0.594L134.812,0.166C134.828,0.074 134.767,0 134.674,0Z" style="fill:white;fill-rule:nonzero;"/>
+    <path d="M135.278,0.002C135.185,0.002 135.096,0.076 135.079,0.167L134.6,2.819C134.583,2.91 134.646,2.984 134.739,2.984L135.247,2.984C135.34,2.984 135.429,2.91 135.446,2.819L135.636,1.763L135.985,2.888C136.002,2.947 136.055,2.984 136.121,2.984L136.794,2.984C136.86,2.984 136.926,2.947 136.964,2.888L137.72,1.758L137.528,2.819C137.512,2.91 137.574,2.984 137.667,2.984L138.176,2.984C138.269,2.984 138.358,2.91 138.374,2.819L138.853,0.167C138.87,0.076 138.808,0.002 138.715,0.002L138.062,0.002C137.997,0.002 137.93,0.039 137.892,0.098L136.652,1.957C136.633,1.987 136.586,1.979 136.575,1.944L136.066,0.098C136.049,0.039 135.996,0.002 135.93,0.002L135.278,0.002Z" style="fill:white;fill-rule:nonzero;"/>
+</svg>

platformio.ini

@@ -22,10 +22,13 @@ lib_deps =
   rweather/Crypto @ ^0.4.0
   adafruit/RTClib @ ^2.1.3
   melopero/Melopero RV3028 @ ^1.1.0
+  electroniccats/CayenneLPP @ 1.4.0
 build_flags = -w -DNDEBUG -DRADIOLIB_STATIC_ONLY=1 -DRADIOLIB_GODMODE=1
-  -D LORA_FREQ=867.5
+  -D LORA_FREQ=869.525
   -D LORA_BW=250
-  -D LORA_SF=10
+  -D LORA_SF=11
+  -D ENABLE_PRIVATE_KEY_IMPORT=1   ; NOTE: comment these out for more secure firmware
+  -D ENABLE_PRIVATE_KEY_EXPORT=1
 build_src_filter =
   +<*.cpp>
   +<helpers/*.cpp>
@@ -34,7 +37,7 @@ build_src_filter =
 
 [esp32_base]
 extends = arduino_base
-platform = espressif32
+platform = platformio/espressif32@^6.11.0
 monitor_filters = esp32_exception_decoder
 extra_scripts = merge-bin.py
 build_flags = ${arduino_base.build_flags}
@@ -46,12 +49,19 @@ lib_deps =
   me-no-dev/ESPAsyncWebServer @ ^3.6.0
   file://arch/esp32/AsyncElegantOTA
 
+; esp32c6 uses arduino framework 3.x
+[esp32c6_base]
+extends = esp32_base
+platform = https://github.com/pioarduino/platform-espressif32/releases/download/stable/platform-espressif32.zip
+
 ; ----------------- NRF52 ---------------------
+
 [nrf52_base]
 extends = arduino_base
 platform = nordicnrf52
 build_flags = ${arduino_base.build_flags}
   -D NRF52_PLATFORM
+  -D LFS_NO_ASSERT=1
 
 [nrf52840_base]
 extends = nrf52_base
@@ -60,3 +70,28 @@ lib_deps =
   ${nrf52_base.lib_deps}
   rweather/Crypto @ ^0.4.0
   https://github.com/adafruit/Adafruit_nRF52_Arduino
+
+; ----------------- RP2040 ---------------------
+
+[rp2040_base]
+extends = arduino_base
+upload_protocol = picotool
+board_build.core = earlephilhower
+platform = https://github.com/maxgerhardt/platform-raspberrypi.git
+build_flags = ${arduino_base.build_flags}
+  -D RP2040_PLATFORM
+
+; ----------------- STM32 ----------------------
+
+[stm32_base]
+extends = arduino_base
+platform = platformio/ststm32@19.1.0
+platform_packages = platformio/framework-arduinoststm32@https://github.com/stm32duino/Arduino_Core_STM32/archive/2.10.1.zip
+extra_scripts = post:arch/stm32/build_hex.py
+build_flags = ${arduino_base.build_flags}
+  -D STM32_PLATFORM
+  -I src/helpers/stm32
+build_src_filter = ${arduino_base.build_src_filter}
+  +<helpers/stm32>
+lib_deps = ${arduino_base.lib_deps}
+  file://arch/stm32/Adafruit_LittleFS_stm32

src/Dispatcher.cpp

@@ -10,12 +10,18 @@ namespace mesh {
 
 #define MAX_RX_DELAY_MILLIS   32000  // 32 seconds
 
+#ifndef NOISE_FLOOR_CALIB_INTERVAL
+  #define NOISE_FLOOR_CALIB_INTERVAL   2000     // 2 seconds
+#endif
+
 void Dispatcher::begin() {
   n_sent_flood = n_sent_direct = 0;
   n_recv_flood = n_recv_direct = 0;
-  n_full_events = 0;
+  _err_flags = 0;
+  radio_nonrx_start = _ms->getMillis();
 
   _radio->begin();
+  prev_isrecv_mode = _radio->isInRecvMode();
 }
 
 float Dispatcher::getAirtimeBudgetFactor() const {
@@ -29,8 +35,29 @@ int Dispatcher::calcRxDelay(float score, uint32_t air_time) const {
 uint32_t Dispatcher::getCADFailRetryDelay() const {
   return 200;
 }
+uint32_t Dispatcher::getCADFailMaxDuration() const {
+  return 4000;   // 4 seconds
+}
 
 void Dispatcher::loop() {
+  if (millisHasNowPassed(next_floor_calib_time)) {
+    _radio->triggerNoiseFloorCalibrate(getInterferenceThreshold());
+    next_floor_calib_time = futureMillis(NOISE_FLOOR_CALIB_INTERVAL);
+  }
+  _radio->loop();
+
+  // check for radio 'stuck' in mode other than Rx
+  bool is_recv = _radio->isInRecvMode();
+  if (is_recv != prev_isrecv_mode) {
+    prev_isrecv_mode = is_recv;
+    if (!is_recv) {
+      radio_nonrx_start = _ms->getMillis();
+    }
+  }
+  if (!is_recv && _ms->getMillis() - radio_nonrx_start > 8000) {   // radio has not been in Rx mode for 8 seconds!
+    _err_flags |= ERR_EVENT_STARTRX_TIMEOUT;
+  }
+
   if (outbound) {  // waiting for outbound send to be completed
     if (_radio->isSendComplete()) {
       long t = _ms->getMillis() - outbound_start;
@@ -60,6 +87,14 @@ void Dispatcher::loop() {
     } else {
       return;  // can't do any more radio activity until send is complete or timed out
     }
+
+    // going back into receive mode now...
+    next_agc_reset_time = futureMillis(getAGCResetInterval());
+  }
+
+  if (getAGCResetInterval() > 0 && millisHasNowPassed(next_agc_reset_time)) {
+    _radio->resetAGC();
+    next_agc_reset_time = futureMillis(getAGCResetInterval());
   }
 
   // check inbound (delayed) queue
@@ -98,6 +133,12 @@ void Dispatcher::checkRecv() {
 #endif
 
         pkt->header = raw[i++];
+        if (pkt->hasTransportCodes()) {
+          memcpy(&pkt->transport_codes[0], &raw[i], 2); i += 2;
+          memcpy(&pkt->transport_codes[1], &raw[i], 2); i += 2;
+        } else {
+          pkt->transport_codes[0] = pkt->transport_codes[1] = 0;
+        }
         pkt->path_len = raw[i++];
 
         if (pkt->path_len > MAX_PATH_SIZE || i + pkt->path_len > len) {
@@ -129,7 +170,7 @@ void Dispatcher::checkRecv() {
     #if MESH_PACKET_LOGGING
     Serial.print(getLogDateTime());
     Serial.printf(": RX, len=%d (type=%d, route=%s, payload_len=%d) SNR=%d RSSI=%d score=%d", 
-            2 + pkt->path_len + pkt->payload_len, pkt->getPayloadType(), pkt->isRouteDirect() ? "D" : "F", pkt->payload_len,
+            pkt->getRawLength(), pkt->getPayloadType(), pkt->isRouteDirect() ? "D" : "F", pkt->payload_len,
             (int)pkt->getSNR(), (int)_radio->getLastRSSI(), (int)(score*1000));
 
     static uint8_t packet_hash[MAX_HASH_SIZE];
@@ -144,7 +185,7 @@ void Dispatcher::checkRecv() {
       Serial.printf("\n");
     }
     #endif
-    logRx(pkt, 2 + pkt->path_len + pkt->payload_len, score);   // hook for custom logging
+    logRx(pkt, pkt->getRawLength(), score);   // hook for custom logging
 
     if (pkt->isRouteFlood()) {
       n_recv_flood++;
@@ -182,12 +223,25 @@ void Dispatcher::processRecvPacket(Packet* pkt) {
 }
 
 void Dispatcher::checkSend() {
-  if (_mgr->getOutboundCount() == 0) return;  // nothing waiting to send
+  if (_mgr->getOutboundCount(_ms->getMillis()) == 0) return;  // nothing waiting to send
   if (!millisHasNowPassed(next_tx_time)) return;   // still in 'radio silence' phase (from airtime budget setting)
   if (_radio->isReceiving()) {   // LBT - check if radio is currently mid-receive, or if channel activity
-    next_tx_time = futureMillis(getCADFailRetryDelay());
-    return; 
+    if (cad_busy_start == 0) {
+      cad_busy_start = _ms->getMillis();   // record when CAD busy state started
+    }
+
+    if (_ms->getMillis() - cad_busy_start > getCADFailMaxDuration()) {
+      _err_flags |= ERR_EVENT_CAD_TIMEOUT;
+
+      MESH_DEBUG_PRINTLN("%s Dispatcher::checkSend(): CAD busy max duration reached!", getLogDateTime());
+      // channel activity has gone on too long... (Radio might be in a bad state)
+      // force the pending transmit below...
+    } else {
+      next_tx_time = futureMillis(getCADFailRetryDelay());
+      return;
+    }
   }
+  cad_busy_start = 0;  // reset busy state
 
   outbound = _mgr->getNextOutbound(_ms->getMillis());
   if (outbound) {
@@ -198,6 +252,10 @@ void Dispatcher::checkSend() {
     raw[len++] = NODE_ID;
 #endif
     raw[len++] = outbound->header;
+    if (outbound->hasTransportCodes()) {
+      memcpy(&raw[len], &outbound->transport_codes[0], 2); len += 2;
+      memcpy(&raw[len], &outbound->transport_codes[1], 2); len += 2;
+    }
     raw[len++] = outbound->path_len;
     memcpy(&raw[len], outbound->path, outbound->path_len); len += outbound->path_len;
 
@@ -210,7 +268,16 @@ void Dispatcher::checkSend() {
 
       uint32_t max_airtime = _radio->getEstAirtimeFor(len)*3/2;
       outbound_start = _ms->getMillis();
-      _radio->startSendRaw(raw, len);
+      bool success = _radio->startSendRaw(raw, len);
+      if (!success) {
+        MESH_DEBUG_PRINTLN("%s Dispatcher::loop(): ERROR: send start failed!", getLogDateTime());
+
+        logTxFail(outbound, outbound->getRawLength());
+  
+        releasePacket(outbound);  // return to pool
+        outbound = NULL;
+        return;
+      }
       outbound_expiry = futureMillis(max_airtime);
 
     #if MESH_PACKET_LOGGING
@@ -231,7 +298,7 @@ void Dispatcher::checkSend() {
 Packet* Dispatcher::obtainNewPacket() {
   auto pkt = _mgr->allocNew();  // TODO: zero out all fields
   if (pkt == NULL) {
-    n_full_events++;
+    _err_flags |= ERR_EVENT_FULL;
   } else {
     pkt->payload_len = pkt->path_len = 0;
     pkt->_snr = 0;

src/Dispatcher.h

@@ -42,8 +42,9 @@ public:
    * \brief  starts the raw packet send. (no wait)
    * \param  bytes   the raw packet data
    * \param  len  the length in bytes
+   * \returns true if successfully started
   */
-  virtual void startSendRaw(const uint8_t* bytes, int len) = 0;
+  virtual bool startSendRaw(const uint8_t* bytes, int len) = 0;
 
   /**
    * \returns true if the previous 'startSendRaw()' completed successfully.
@@ -55,6 +56,19 @@ public:
   */
   virtual void onSendFinished() = 0;
 
+  /**
+   * \brief  do any processing needed on each loop cycle
+   */
+  virtual void loop() { }
+
+  virtual int getNoiseFloor() const { return 0; }
+
+  virtual void triggerNoiseFloorCalibrate(int threshold) { }
+
+  virtual void resetAGC() { }
+
+  virtual bool isInRecvMode() const = 0;
+
   /**
    * \returns  true if the radio is currently mid-receive of a packet.
   */
@@ -75,7 +89,7 @@ public:
 
   virtual void queueOutbound(Packet* packet, uint8_t priority, uint32_t scheduled_for) = 0;
   virtual Packet* getNextOutbound(uint32_t now) = 0;    // by priority
-  virtual int getOutboundCount() const = 0;
+  virtual int getOutboundCount(uint32_t now) const = 0;
   virtual int getFreeCount() const = 0;
   virtual Packet* getOutboundByIdx(int i) = 0;
   virtual Packet* removeOutboundByIdx(int i) = 0;
@@ -90,6 +104,10 @@ typedef uint32_t  DispatcherAction;
 #define ACTION_RETRANSMIT(pri)   (((uint32_t)1 + (pri))<<24)
 #define ACTION_RETRANSMIT_DELAYED(pri, _delay)  ((((uint32_t)1 + (pri))<<24) | (_delay))
 
+#define ERR_EVENT_FULL              (1 << 0)
+#define ERR_EVENT_CAD_TIMEOUT       (1 << 1)
+#define ERR_EVENT_STARTRX_TIMEOUT   (1 << 2)
+
 /**
  * \brief  The low-level task that manages detecting incoming Packets, and the queueing
  *      and scheduling of outbound Packets.
@@ -98,9 +116,12 @@ class Dispatcher {
   Packet* outbound;  // current outbound packet
   unsigned long outbound_expiry, outbound_start, total_air_time;
   unsigned long next_tx_time;
+  unsigned long cad_busy_start;
+  unsigned long radio_nonrx_start;
+  unsigned long next_floor_calib_time, next_agc_reset_time;
+  bool  prev_isrecv_mode;
   uint32_t n_sent_flood, n_sent_direct;
   uint32_t n_recv_flood, n_recv_direct;
-  uint32_t n_full_events;
 
   void processRecvPacket(Packet* pkt);
 
@@ -108,11 +129,17 @@ protected:
   PacketManager* _mgr;
   Radio* _radio;
   MillisecondClock* _ms;
+  uint16_t _err_flags;
 
   Dispatcher(Radio& radio, MillisecondClock& ms, PacketManager& mgr)
     : _radio(&radio), _ms(&ms), _mgr(&mgr)
   {
     outbound = NULL; total_air_time = 0; next_tx_time = 0;
+    cad_busy_start = 0;
+    next_floor_calib_time = next_agc_reset_time = 0;
+    _err_flags = 0;
+    radio_nonrx_start = 0;
+    prev_isrecv_mode = true;
   }
 
   virtual DispatcherAction onRecvPacket(Packet* pkt) = 0;
@@ -127,6 +154,9 @@ protected:
   virtual float getAirtimeBudgetFactor() const;
   virtual int calcRxDelay(float score, uint32_t air_time) const;
   virtual uint32_t getCADFailRetryDelay() const;
+  virtual uint32_t getCADFailMaxDuration() const;
+  virtual int getInterferenceThreshold() const { return 0; }    // disabled by default
+  virtual int getAGCResetInterval() const { return 0; }    // disabled by default
 
 public:
   void begin();
@@ -141,7 +171,10 @@ public:
   uint32_t getNumSentDirect() const { return n_sent_direct; }
   uint32_t getNumRecvFlood() const { return n_recv_flood; }
   uint32_t getNumRecvDirect() const { return n_recv_direct; }
-  uint32_t getNumFullEvents() const { return n_full_events; }
+  void resetStats() {
+    n_sent_flood = n_sent_direct = n_recv_flood = n_recv_direct = 0;
+    _err_flags = 0;
+  }
 
   // helper methods
   bool millisHasNowPassed(unsigned long timestamp) const;

src/Mesh.cpp

@@ -15,7 +15,7 @@ bool Mesh::allowPacketForward(const mesh::Packet* packet) {
   return false;  // by default, Transport NOT enabled
 }
 uint32_t Mesh::getRetransmitDelay(const mesh::Packet* packet) { 
-  uint32_t t = (_radio->getEstAirtimeFor(packet->path_len + packet->payload_len + 2) * 52 / 50) / 2;
+  uint32_t t = (_radio->getEstAirtimeFor(packet->getRawLength()) * 52 / 50) / 2;
 
   return _rng->nextInt(0, 5)*t;
 }
@@ -71,7 +71,15 @@ DispatcherAction Mesh::onRecvPacket(Packet* pkt) {
 
       // remove our hash from 'path', then re-broadcast
       pkt->path_len -= PATH_HASH_SIZE;
+  #if 0
       memcpy(pkt->path, &pkt->path[PATH_HASH_SIZE], pkt->path_len);
+  #elif PATH_HASH_SIZE == 1
+      for (int k = 0; k < pkt->path_len; k++) {  // shuffle bytes by 1
+        pkt->path[k] = pkt->path[k + 1];
+      }
+  #else
+      #error "need path remove impl"
+  #endif
 
       uint32_t d = getDirectRetransmitDelay(pkt);
       return ACTION_RETRANSMIT_DELAYED(0, d);  // Routed traffic is HIGHEST priority 
@@ -127,14 +135,14 @@ DispatcherAction Mesh::onRecvPacket(Packet* pkt) {
                 int k = 0;
                 uint8_t path_len = data[k++];
                 uint8_t* path = &data[k]; k += path_len;
-                uint8_t extra_type = data[k++];
+                uint8_t extra_type = data[k++] & 0x0F;   // upper 4 bits reserved for future use
                 uint8_t* extra = &data[k];
                 uint8_t extra_len = len - k;   // remainder of packet (may be padded with zeroes!)
                 if (onPeerPathRecv(pkt, j, secret, path, path_len, extra_type, extra, extra_len)) {
                   if (pkt->isRouteFlood()) {
                     // send a reciprocal return path to sender, but send DIRECTLY!
                     mesh::Packet* rpath = createPathReturn(&src_hash, secret, pkt->path, pkt->path_len, 0, NULL, 0);
-                    if (rpath) sendDirect(rpath, path, path_len);
+                    if (rpath) sendDirect(rpath, path, path_len, 500);
                   }
                 }
               } else {
@@ -510,7 +518,11 @@ void Mesh::sendDirect(Packet* packet, const uint8_t* path, uint8_t path_len, uin
     pri = 5;   // maybe make this configurable
   } else {
     memcpy(packet->path, path, packet->path_len = path_len);
-    pri = 0;
+    if (packet->getPayloadType() == PAYLOAD_TYPE_PATH) {
+      pri = 1;   // slightly less priority
+    } else {
+      pri = 0;
+    }
   }
   _tables->hasSeen(packet); // mark this packet as already sent in case it is rebroadcast back to us
   sendPacket(packet, pri, delay_millis);

src/Mesh.h

@@ -16,6 +16,7 @@ public:
 class MeshTables {
 public:
   virtual bool hasSeen(const Packet* packet) = 0;
+  virtual void clear(const Packet* packet) = 0;   // remove this packet hash from table
 };
 
 /**

src/Packet.cpp

@@ -10,6 +10,10 @@ Packet::Packet() {
   payload_len = 0;
 }
 
+int Packet::getRawLength() const {
+  return 2 + path_len + payload_len + (hasTransportCodes() ? 4 : 0);
+}
+
 void Packet::calculatePacketHash(uint8_t* hash) const {
   SHA256 sha;
   uint8_t t = getPayloadType();
@@ -24,6 +28,10 @@ void Packet::calculatePacketHash(uint8_t* hash) const {
 uint8_t Packet::writeTo(uint8_t dest[]) const {
   uint8_t i = 0;
   dest[i++] = header;
+  if (hasTransportCodes()) {
+    memcpy(&dest[i], &transport_codes[0], 2); i += 2;
+    memcpy(&dest[i], &transport_codes[1], 2); i += 2;
+  }
   dest[i++] = path_len;
   memcpy(&dest[i], path, path_len); i += path_len;
   memcpy(&dest[i], payload, payload_len); i += payload_len;
@@ -33,11 +41,18 @@ uint8_t Packet::writeTo(uint8_t dest[]) const {
 bool Packet::readFrom(const uint8_t src[], uint8_t len) {
   uint8_t i = 0;
   header = src[i++];
+  if (hasTransportCodes()) {
+    memcpy(&transport_codes[0], &src[i], 2); i += 2;
+    memcpy(&transport_codes[1], &src[i], 2); i += 2;
+  } else {
+    transport_codes[0] = transport_codes[1] = 0;
+  }
   path_len = src[i++];
   if (path_len > sizeof(path)) return false;   // bad encoding
   memcpy(path, &src[i], path_len); i += path_len;
   if (i >= len) return false;   // bad encoding
   payload_len = len - i;
+  if (payload_len > sizeof(payload)) return false;  // bad encoding
   memcpy(payload, &src[i], payload_len); //i += payload_len;
   return true;   // success
 }

src/Packet.h

@@ -11,10 +11,10 @@ namespace mesh {
 #define PH_VER_SHIFT         6
 #define PH_VER_MASK       0x03   // 2-bits
 
-#define ROUTE_TYPE_RESERVED1     0x00    // FUTURE
-#define ROUTE_TYPE_FLOOD         0x01    // flood mode, needs 'path' to be built up (max 64 bytes)
-#define ROUTE_TYPE_DIRECT        0x02    // direct route, 'path' is supplied
-#define ROUTE_TYPE_RESERVED2     0x03    // FUTURE
+#define ROUTE_TYPE_TRANSPORT_FLOOD   0x00    // flood mode + transport codes
+#define ROUTE_TYPE_FLOOD             0x01    // flood mode, needs 'path' to be built up (max 64 bytes)
+#define ROUTE_TYPE_DIRECT            0x02    // direct route, 'path' is supplied
+#define ROUTE_TYPE_TRANSPORT_DIRECT  0x03    // direct route + transport codes
 
 #define PAYLOAD_TYPE_REQ         0x00    // request (prefixed with dest/src hashes, MAC) (enc data: timestamp, blob)
 #define PAYLOAD_TYPE_RESPONSE    0x01    // response to REQ or ANON_REQ (prefixed with dest/src hashes, MAC) (enc data: timestamp, blob)
@@ -43,6 +43,7 @@ public:
 
   uint8_t header;
   uint16_t payload_len, path_len;
+  uint16_t transport_codes[2];
   uint8_t path[MAX_PATH_SIZE];
   uint8_t payload[MAX_PACKET_PAYLOAD];
   int8_t _snr;
@@ -58,8 +59,10 @@ public:
    */
   uint8_t getRouteType() const { return header & PH_ROUTE_MASK; }
 
-  bool isRouteFlood() const { return getRouteType() == ROUTE_TYPE_FLOOD; }
-  bool isRouteDirect() const { return getRouteType() == ROUTE_TYPE_DIRECT; }
+  bool isRouteFlood() const { return getRouteType() == ROUTE_TYPE_FLOOD || getRouteType() == ROUTE_TYPE_TRANSPORT_FLOOD; }
+  bool isRouteDirect() const { return getRouteType() == ROUTE_TYPE_DIRECT || getRouteType() == ROUTE_TYPE_TRANSPORT_DIRECT; }
+
+  bool hasTransportCodes() const { return getRouteType() == ROUTE_TYPE_TRANSPORT_FLOOD || getRouteType() == ROUTE_TYPE_TRANSPORT_DIRECT; }
 
   /**
    * \returns  one of PAYLOAD_TYPE_ values
@@ -76,6 +79,11 @@ public:
 
   float getSNR() const { return ((float)_snr) / 4.0f; }
 
+  /**
+   * \returns  the encoded/wire format length of this packet
+   */
+  int getRawLength() const;
+
   /**
    * \brief  save entire packet as a blob
    * \param dest  (OUT) destination buffer (assumed to be MAX_MTU_SIZE)

src/helpers/AdvertDataHelpers.cpp

@@ -3,13 +3,19 @@
   uint8_t AdvertDataBuilder::encodeTo(uint8_t app_data[]) {
     app_data[0] = _type;
     int i = 1;
-    if (!(_lat == 0 && _lon == 0)) {
+    if (_has_loc) {
       app_data[0] |= ADV_LATLON_MASK;
       memcpy(&app_data[i], &_lat, 4); i += 4;
       memcpy(&app_data[i], &_lon, 4); i += 4;
     }
-    // TODO:  BATTERY encoding
-    // TODO:  TEMPERATURE encoding
+    if (_extra1) {
+      app_data[0] |= ADV_FEAT1_MASK;
+      memcpy(&app_data[i], &_extra1, 2); i += 2;
+    }
+    if (_extra2) {
+      app_data[0] |= ADV_FEAT2_MASK;
+      memcpy(&app_data[i], &_extra2, 2); i += 2;
+    }
     if (_name && *_name != 0) { 
       app_data[0] |= ADV_NAME_MASK;
       const char* sp = _name;
@@ -25,17 +31,18 @@
     _lat = _lon = 0;
     _flags = app_data[0];
     _valid = false;
-
+    _extra1 = _extra2 = 0;
+  
     int i = 1;
     if (_flags & ADV_LATLON_MASK) {
       memcpy(&_lat, &app_data[i], 4); i += 4;
       memcpy(&_lon, &app_data[i], 4); i += 4;
     }
-    if (_flags & ADV_BATTERY_MASK) {
-      /* TODO: somewhere to store battery volts? */ i += 2;
+    if (_flags & ADV_FEAT1_MASK) {
+      memcpy(&_extra1, &app_data[i], 2); i += 2;
     }
-    if (_flags & ADV_TEMPERATURE_MASK) {
-      /* TODO: somewhere to store temperature? */ i += 2;
+    if (_flags & ADV_FEAT2_MASK) {
+      memcpy(&_extra2, &app_data[i], 2); i += 2;
     }
 
     if (app_data_len >= i) {

src/helpers/AdvertDataHelpers.h

@@ -11,19 +11,25 @@
 //FUTURE: 4..15
 
 #define ADV_LATLON_MASK       0x10
-#define ADV_BATTERY_MASK      0x20
-#define ADV_TEMPERATURE_MASK  0x40
+#define ADV_FEAT1_MASK        0x20   // FUTURE
+#define ADV_FEAT2_MASK        0x40   // FUTURE
 #define ADV_NAME_MASK         0x80
 
 class AdvertDataBuilder {
   uint8_t _type;
+  bool _has_loc;
   const char* _name;
   int32_t _lat, _lon;
+  uint16_t _extra1 = 0;
+  uint16_t _extra2 = 0;
 public:
-  AdvertDataBuilder(uint8_t adv_type) : _type(adv_type), _name(NULL), _lat(0), _lon(0) { }
-  AdvertDataBuilder(uint8_t adv_type, const char* name) : _type(adv_type), _name(name), _lat(0), _lon(0)  { }
+  AdvertDataBuilder(uint8_t adv_type) : _type(adv_type), _name(NULL), _has_loc(false) { }
+  AdvertDataBuilder(uint8_t adv_type, const char* name) : _type(adv_type), _name(name), _has_loc(false) { }
   AdvertDataBuilder(uint8_t adv_type, const char* name, double lat, double lon) : 
-      _type(adv_type), _name(name), _lat(lat * 1E6), _lon(lon * 1E6)  { }
+      _type(adv_type), _name(name), _has_loc(true), _lat(lat * 1E6), _lon(lon * 1E6)  { }
+
+  void setFeat1(uint16_t extra) { _extra1 = extra; }
+  void setFeat2(uint16_t extra) { _extra2 = extra; }
 
   /**
    * \brief  encode the given advertisement data.
@@ -38,16 +44,20 @@ class AdvertDataParser {
   bool _valid;
   char _name[MAX_ADVERT_DATA_SIZE];
   int32_t _lat, _lon;
+  uint16_t _extra1;
+  uint16_t _extra2;
 public:
   AdvertDataParser(const uint8_t app_data[], uint8_t app_data_len);
 
   bool isValid() const { return _valid; }
   uint8_t getType() const { return _flags & 0x0F; }
+  uint16_t getFeat1() const { return _extra1; }
+  uint16_t getFeat2() const { return _extra2; }
 
   bool hasName() const { return _name[0] != 0; }
   const char* getName() const { return _name; }
 
-  bool hasLatLon() const { return !(_lat == 0 && _lon == 0); }
+  bool hasLatLon() const { return (_flags & ADV_LATLON_MASK) != 0; }
   int32_t getIntLat() const { return _lat; }
   int32_t getIntLon() const { return _lon; }
   double getLat() const { return ((double)_lat) / 1000000.0; }

src/helpers/ArduinoSerialInterface.h

@@ -8,30 +8,18 @@ class ArduinoSerialInterface : public BaseSerialInterface {
   uint8_t _state;
   uint16_t _frame_len;
   uint16_t rx_len;
-#ifdef LILYGO_T3S3
-  HWCDC* _serial;
-#elif defined(NRF52_PLATFORM)
-  Adafruit_USBD_CDC* _serial;
-#else
-  HardwareSerial* _serial;
-#endif
+  Stream* _serial;
   uint8_t rx_buf[MAX_FRAME_SIZE];
 
 public:
   ArduinoSerialInterface() { _isEnabled = false; _state = 0; }
 
-#ifdef LILYGO_T3S3
-  void begin(HWCDC& serial) { _serial = &serial; }
-#elif defined(NRF52_PLATFORM)
-  void begin(Adafruit_USBD_CDC& serial) {
-    _serial = &serial;
+  void begin(Stream& serial) { 
+    _serial = &serial; 
   #ifdef RAK_4631
     pinMode(WB_IO2, OUTPUT);
-  #endif
+  #endif  
   }
-#else
-  void begin(HardwareSerial& serial) { _serial = &serial; }
-#endif
 
   // BaseSerialInterface methods
   void enable() override;

src/helpers/AutoDiscoverRTCClock.cpp

@@ -8,8 +8,12 @@ static bool ds3231_success = false;
 static Melopero_RV3028 rtc_rv3028;
 static bool rv3028_success = false;
 
+static RTC_PCF8563 rtc_8563;
+static bool rtc_8563_success = false;
+
 #define DS3231_ADDRESS   0x68
 #define RV3028_ADDRESS   0x52
+#define PCF8563_ADDRESS  0x51
 
 bool AutoDiscoverRTCClock::i2c_probe(TwoWire& wire, uint8_t addr) {
   wire.beginTransmission(addr);
@@ -28,6 +32,9 @@ void AutoDiscoverRTCClock::begin(TwoWire& wire) {
 	rtc_rv3028.set24HourMode(); // Set the device to use the 24hour format (default) instead of the 12 hour format
     rv3028_success = true;
   }
+  if(i2c_probe(wire,PCF8563_ADDRESS)){
+    rtc_8563_success = rtc_8563.begin(&wire);
+  }
 }
 
 uint32_t AutoDiscoverRTCClock::getCurrentTime() {
@@ -44,6 +51,9 @@ uint32_t AutoDiscoverRTCClock::getCurrentTime() {
         rtc_rv3028.getSecond()
     ).unixtime();
   }
+  if(rtc_8563_success){
+    return rtc_8563.now().unixtime();
+  }
   return _fallback->getCurrentTime();
 }
 
@@ -52,9 +62,10 @@ void AutoDiscoverRTCClock::setCurrentTime(uint32_t time) {
     rtc_3231.adjust(DateTime(time));
   } else if (rv3028_success) {
     auto dt = DateTime(time);
-	uint8_t weekday = (dt.day() + (uint16_t)((2.6 * dt.month()) - 0.2) - (2 * (dt.year() / 100)) + dt.year() + (uint16_t)(dt.year() / 4) + (uint16_t)(dt.year() / 400)) % 7;
-	
+	  uint8_t weekday = (dt.day() + (uint16_t)((2.6 * dt.month()) - 0.2) - (2 * (dt.year() / 100)) + dt.year() + (uint16_t)(dt.year() / 4) + (uint16_t)(dt.year() / 400)) % 7;
     rtc_rv3028.setTime(dt.year(), dt.month(), weekday, dt.day(), dt.hour(), dt.minute(), dt.second());
+  } else if (rtc_8563_success) {
+    rtc_8563.adjust(DateTime(time));
   } else {
     _fallback->setCurrentTime(time);
   }

src/helpers/BaseChatMesh.cpp

@@ -1,6 +1,25 @@
 #include <helpers/BaseChatMesh.h>
 #include <Utils.h>
 
+#ifndef SERVER_RESPONSE_DELAY
+  #define SERVER_RESPONSE_DELAY   300
+#endif
+
+#ifndef TXT_ACK_DELAY
+  #define TXT_ACK_DELAY     200
+#endif
+
+mesh::Packet* BaseChatMesh::createSelfAdvert(const char* name) {
+  uint8_t app_data[MAX_ADVERT_DATA_SIZE];
+  uint8_t app_data_len;
+  {
+    AdvertDataBuilder builder(ADV_TYPE_CHAT, name);
+    app_data_len = builder.encodeTo(app_data);
+  }
+
+  return createAdvert(self_id, app_data, app_data_len);
+}
+
 mesh::Packet* BaseChatMesh::createSelfAdvert(const char* name, double lat, double lon) {
   uint8_t app_data[MAX_ADVERT_DATA_SIZE];
   uint8_t app_data_len;
@@ -31,8 +50,29 @@ void BaseChatMesh::onAdvertRecv(mesh::Packet* packet, const mesh::Identity& id,
     }
   }
 
+  // save a copy of raw advert packet (to support "Share..." function)
+  int plen = packet->writeTo(temp_buf);
+  putBlobByKey(id.pub_key, PUB_KEY_SIZE, temp_buf, plen);
+  
   bool is_new = false;
   if (from == NULL) {
+    if (!isAutoAddEnabled()) {
+      ContactInfo ci;
+      memset(&ci, 0, sizeof(ci));
+      ci.id = id;
+      ci.out_path_len = -1;  // initially out_path is unknown
+      StrHelper::strncpy(ci.name, parser.getName(), sizeof(ci.name));
+      ci.type = parser.getType();
+      if (parser.hasLatLon()) {
+        ci.gps_lat = parser.getIntLat();
+        ci.gps_lon = parser.getIntLon();
+      }
+      ci.last_advert_timestamp = timestamp;
+      ci.lastmod = getRTCClock()->getCurrentTime();
+      onDiscoveredContact(ci, true, packet->path_len, packet->path);       // let UI know
+      return;
+    }
+
     is_new = true;
     if (num_contacts < MAX_CONTACTS) {
       from = &contacts[num_contacts++];
@@ -50,10 +90,6 @@ void BaseChatMesh::onAdvertRecv(mesh::Packet* packet, const mesh::Identity& id,
     }
   }
 
-  // save a copy of raw advert packet (to support "Share..." function)
-  int plen = packet->writeTo(temp_buf);
-  putBlobByKey(id.pub_key, PUB_KEY_SIZE, temp_buf, plen);
-  
   // update
   StrHelper::strncpy(from->name, parser.getName(), sizeof(from->name));
   from->type = parser.getType();
@@ -64,7 +100,7 @@ void BaseChatMesh::onAdvertRecv(mesh::Packet* packet, const mesh::Identity& id,
   from->last_advert_timestamp = timestamp;
   from->lastmod = getRTCClock()->getCurrentTime();
 
-  onDiscoveredContact(*from, is_new);       // let UI know
+  onDiscoveredContact(*from, is_new, packet->path_len, packet->path);       // let UI know
 }
 
 int BaseChatMesh::searchPeersByHash(const uint8_t* hash) {
@@ -114,14 +150,14 @@ void BaseChatMesh::onPeerDataRecv(mesh::Packet* packet, uint8_t type, int sender
         // let this sender know path TO here, so they can use sendDirect(), and ALSO encode the ACK
         mesh::Packet* path = createPathReturn(from.id, secret, packet->path, packet->path_len,
                                                 PAYLOAD_TYPE_ACK, (uint8_t *) &ack_hash, 4);
-        if (path) sendFlood(path);
+        if (path) sendFlood(path, TXT_ACK_DELAY);
       } else {
         mesh::Packet* ack = createAck(ack_hash);
         if (ack) {
           if (from.out_path_len < 0) {
-            sendFlood(ack);
+            sendFlood(ack, TXT_ACK_DELAY);
           } else {
-            sendDirect(ack, from.out_path, from.out_path_len);
+            sendDirect(ack, from.out_path, from.out_path_len, TXT_ACK_DELAY);
           }
         }
       }
@@ -147,20 +183,41 @@ void BaseChatMesh::onPeerDataRecv(mesh::Packet* packet, uint8_t type, int sender
         // let this sender know path TO here, so they can use sendDirect(), and ALSO encode the ACK
         mesh::Packet* path = createPathReturn(from.id, secret, packet->path, packet->path_len,
                                                 PAYLOAD_TYPE_ACK, (uint8_t *) &ack_hash, 4);
-        if (path) sendFlood(path);
+        if (path) sendFlood(path, TXT_ACK_DELAY);
       } else {
         mesh::Packet* ack = createAck(ack_hash);
         if (ack) {
           if (from.out_path_len < 0) {
-            sendFlood(ack);
+            sendFlood(ack, TXT_ACK_DELAY);
           } else {
-            sendDirect(ack, from.out_path, from.out_path_len);
+            sendDirect(ack, from.out_path, from.out_path_len, TXT_ACK_DELAY);
           }
         }
       }
     } else {
       MESH_DEBUG_PRINTLN("onPeerDataRecv: unsupported message type: %u", (uint32_t) flags);
     }
+  } else if (type == PAYLOAD_TYPE_REQ && len > 4) {
+    uint32_t sender_timestamp;
+    memcpy(&sender_timestamp, data, 4);
+    uint8_t reply_len = onContactRequest(from, sender_timestamp, &data[4], len - 4, temp_buf);
+    if (reply_len > 0) {
+      if (packet->isRouteFlood()) {
+        // let this sender know path TO here, so they can use sendDirect(), and ALSO encode the response
+        mesh::Packet* path = createPathReturn(from.id, secret, packet->path, packet->path_len,
+                                              PAYLOAD_TYPE_RESPONSE, temp_buf, reply_len);
+        if (path) sendFlood(path, SERVER_RESPONSE_DELAY);
+      } else {
+        mesh::Packet* reply = createDatagram(PAYLOAD_TYPE_RESPONSE, from.id, secret, temp_buf, reply_len);
+        if (reply) {
+          if (from.out_path_len >= 0) {  // we have an out_path, so send DIRECT
+            sendDirect(reply, from.out_path, from.out_path_len, SERVER_RESPONSE_DELAY);
+          } else {
+            sendFlood(reply, SERVER_RESPONSE_DELAY);
+          }
+        }
+      }
+    }
   } else if (type == PAYLOAD_TYPE_RESPONSE && len > 0) {
     onContactResponse(from, data, len);
   }
@@ -252,7 +309,7 @@ int  BaseChatMesh::sendMessage(const ContactInfo& recipient, uint32_t timestamp,
   mesh::Packet* pkt = composeMsgPacket(recipient, timestamp, attempt, text, expected_ack);
   if (pkt == NULL) return MSG_SEND_FAILED;
 
-  uint32_t t = _radio->getEstAirtimeFor(pkt->payload_len + pkt->path_len + 2);
+  uint32_t t = _radio->getEstAirtimeFor(pkt->getRawLength());
 
   int rc;
   if (recipient.out_path_len < 0) {
@@ -279,7 +336,7 @@ int  BaseChatMesh::sendCommandData(const ContactInfo& recipient, uint32_t timest
   auto pkt = createDatagram(PAYLOAD_TYPE_TXT_MSG, recipient.id, recipient.shared_secret, temp, 5 + text_len);
   if (pkt == NULL) return MSG_SEND_FAILED;
 
-  uint32_t t = _radio->getEstAirtimeFor(pkt->payload_len + pkt->path_len + 2);
+  uint32_t t = _radio->getEstAirtimeFor(pkt->getRawLength());
   int rc;
   if (recipient.out_path_len < 0) {
     sendFlood(pkt);
@@ -335,6 +392,7 @@ bool BaseChatMesh::importContact(const uint8_t src_buf[], uint8_t len) {
   if (pkt) {
     if (pkt->readFrom(src_buf, len) && pkt->getPayloadType() == PAYLOAD_TYPE_ADVERT) {
       pkt->header |= ROUTE_TYPE_FLOOD;   // simulate it being received flood-mode
+      getTables()->clear(pkt);  // remove packet hash from table, so we can receive/process it again
       _pendingLoopback = pkt;  // loop-back, as if received over radio
       return true;  // success
     } else {
@@ -362,7 +420,7 @@ int BaseChatMesh::sendLogin(const ContactInfo& recipient, const char* password,
 
   auto pkt = createAnonDatagram(PAYLOAD_TYPE_ANON_REQ, self_id, recipient.id, recipient.shared_secret, temp, tlen);
   if (pkt) {
-    uint32_t t = _radio->getEstAirtimeFor(pkt->payload_len + pkt->path_len + 2);
+    uint32_t t = _radio->getEstAirtimeFor(pkt->getRawLength());
     if (recipient.out_path_len < 0) {
       sendFlood(pkt);
       est_timeout = calcFloodTimeoutMillisFor(t);
@@ -376,17 +434,17 @@ int BaseChatMesh::sendLogin(const ContactInfo& recipient, const char* password,
   return MSG_SEND_FAILED;
 }
 
-int  BaseChatMesh::sendStatusRequest(const ContactInfo& recipient, uint32_t& est_timeout) {
+int  BaseChatMesh::sendRequest(const ContactInfo& recipient, uint8_t req_type, uint32_t& tag, uint32_t& est_timeout) {
   uint8_t temp[13];
-  uint32_t now = getRTCClock()->getCurrentTimeUnique();
-  memcpy(temp, &now, 4);   // mostly an extra blob to help make packet_hash unique
-  temp[4] = REQ_TYPE_GET_STATUS;
+  tag = getRTCClock()->getCurrentTimeUnique();
+  memcpy(temp, &tag, 4);   // mostly an extra blob to help make packet_hash unique
+  temp[4] = req_type;
   memset(&temp[5], 0, 4);  // reserved (possibly for 'since' param)
   getRNG()->random(&temp[9], 4);   // random blob to help make packet-hash unique
 
   auto pkt = createDatagram(PAYLOAD_TYPE_REQ, recipient.id, recipient.shared_secret, temp, sizeof(temp));
   if (pkt) {
-    uint32_t t = _radio->getEstAirtimeFor(pkt->payload_len + pkt->path_len + 2);
+    uint32_t t = _radio->getEstAirtimeFor(pkt->getRawLength());
     if (recipient.out_path_len < 0) {
       sendFlood(pkt);
       est_timeout = calcFloodTimeoutMillisFor(t);
@@ -652,6 +710,13 @@ int BaseChatMesh::findChannelIdx(const mesh::GroupChannel& ch) {
 }
 #endif
 
+bool BaseChatMesh::getContactByIdx(uint32_t idx, ContactInfo& contact) {
+  if (idx >= num_contacts) return false;
+
+  contact = contacts[idx];
+  return true;
+}
+
 ContactsIterator BaseChatMesh::startContactsIterator() {
   return ContactsIterator();
 }

src/helpers/BaseChatMesh.h

@@ -7,19 +7,7 @@
 
 #define MAX_TEXT_LEN    (10*CIPHER_BLOCK_SIZE)  // must be LESS than (MAX_PACKET_PAYLOAD - 4 - CIPHER_MAC_SIZE - 1)
 
-struct ContactInfo {
-  mesh::Identity id;
-  char name[32];
-  uint8_t type;   // on of ADV_TYPE_*
-  uint8_t flags;
-  int8_t out_path_len;
-  uint8_t out_path[MAX_PATH_SIZE];
-  uint32_t last_advert_timestamp;   // by THEIR clock
-  uint8_t shared_secret[PUB_KEY_SIZE];
-  uint32_t lastmod;  // by OUR clock
-  int32_t gps_lat, gps_lon;    // 6 dec places
-  uint32_t sync_since;
-};
+#include "ContactInfo.h"
 
 #define MAX_SEARCH_RESULTS   8
 
@@ -61,10 +49,7 @@ struct ConnectionInfo {
   uint32_t expected_ack;
 };
 
-struct ChannelDetails {
-  mesh::GroupChannel channel;
-  char name[32];
-};
+#include "ChannelDetails.h"
 
 /**
  *  \brief  abstract Mesh class for common 'chat' client
@@ -103,7 +88,8 @@ protected:
   }
 
   // 'UI' concepts, for sub-classes to implement
-  virtual void onDiscoveredContact(ContactInfo& contact, bool is_new) = 0;
+  virtual bool isAutoAddEnabled() const { return true; }
+  virtual void onDiscoveredContact(ContactInfo& contact, bool is_new, uint8_t path_len, const uint8_t* path) = 0;
   virtual bool processAck(const uint8_t *data) = 0;
   virtual void onContactPathUpdated(const ContactInfo& contact) = 0;
   virtual void onMessageRecv(const ContactInfo& contact, mesh::Packet* pkt, uint32_t sender_timestamp, const char *text) = 0;
@@ -113,6 +99,7 @@ protected:
   virtual uint32_t calcDirectTimeoutMillisFor(uint32_t pkt_airtime_millis, uint8_t path_len) const = 0;
   virtual void onSendTimeout() = 0;
   virtual void onChannelMessageRecv(const mesh::GroupChannel& channel, mesh::Packet* pkt, uint32_t timestamp, const char *text) = 0;
+  virtual uint8_t onContactRequest(const ContactInfo& contact, uint32_t sender_timestamp, const uint8_t* data, uint8_t len, uint8_t* reply) = 0;
   virtual void onContactResponse(const ContactInfo& contact, const uint8_t* data, uint8_t len) = 0;
 
   // storage concepts, for sub-classes to override/implement
@@ -140,12 +127,13 @@ protected:
   void checkConnections();
 
 public:
-  mesh::Packet* createSelfAdvert(const char* name, double lat=0.0, double lon=0.0);
+  mesh::Packet* createSelfAdvert(const char* name);
+  mesh::Packet* createSelfAdvert(const char* name, double lat, double lon);
   int  sendMessage(const ContactInfo& recipient, uint32_t timestamp, uint8_t attempt, const char* text, uint32_t& expected_ack, uint32_t& est_timeout);
   int  sendCommandData(const ContactInfo& recipient, uint32_t timestamp, uint8_t attempt, const char* text, uint32_t& est_timeout);
   bool sendGroupMessage(uint32_t timestamp, mesh::GroupChannel& channel, const char* sender_name, const char* text, int text_len);
   int  sendLogin(const ContactInfo& recipient, const char* password, uint32_t& est_timeout);
-  int  sendStatusRequest(const ContactInfo& recipient, uint32_t& est_timeout);
+  int  sendRequest(const ContactInfo& recipient, uint8_t req_type, uint32_t& tag, uint32_t& est_timeout);
   bool shareContactZeroHop(const ContactInfo& contact);
   uint8_t exportContact(const ContactInfo& contact, uint8_t dest_buf[]);
   bool importContact(const uint8_t src_buf[], uint8_t len);
@@ -156,6 +144,7 @@ public:
   bool  removeContact(ContactInfo& contact);
   bool  addContact(const ContactInfo& contact);
   int getNumContacts() const { return num_contacts; }
+  bool getContactByIdx(uint32_t idx, ContactInfo& contact);
   ContactsIterator startContactsIterator();
   ChannelDetails* addChannel(const char* name, const char* psk_base64);
   bool getChannel(int idx, ChannelDetails& dest);

src/helpers/ChannelDetails.h

@@ -0,0 +1,9 @@
+#pragma once
+
+#include <Arduino.h>
+#include <Mesh.h>
+
+struct ChannelDetails {
+  mesh::GroupChannel channel;
+  char name[32];
+};

src/helpers/CommonCLI.cpp

@@ -24,7 +24,11 @@ void CommonCLI::loadPrefs(FILESYSTEM* fs) {
 }
 
 void CommonCLI::loadPrefsInt(FILESYSTEM* fs, const char* filename) {
+#if defined(RP2040_PLATFORM)
+  File file = fs->open(filename, "r");
+#else
   File file = fs->open(filename);
+#endif
   if (file) {
     uint8_t pad[8];
 
@@ -49,9 +53,11 @@ void CommonCLI::loadPrefsInt(FILESYSTEM* fs, const char* filename) {
     file.read((uint8_t *) &_prefs->allow_read_only, sizeof(_prefs->allow_read_only));  // 114
     file.read((uint8_t *) &_prefs->reserved2, sizeof(_prefs->reserved2));  // 115
     file.read((uint8_t *) &_prefs->bw, sizeof(_prefs->bw));  // 116
-    file.read(pad, 4);   // 120
+    file.read((uint8_t *) &_prefs->agc_reset_interval, sizeof(_prefs->agc_reset_interval));  // 120
+    file.read(pad, 3);   // 121
     file.read((uint8_t *) &_prefs->flood_max, sizeof(_prefs->flood_max));   // 124
     file.read((uint8_t *) &_prefs->flood_advert_interval, sizeof(_prefs->flood_advert_interval));  // 125
+    file.read((uint8_t *) &_prefs->interference_threshold, sizeof(_prefs->interference_threshold));  // 126
 
     // sanitise bad pref values
     _prefs->rx_delay_base = constrain(_prefs->rx_delay_base, 0, 20.0f);
@@ -69,9 +75,11 @@ void CommonCLI::loadPrefsInt(FILESYSTEM* fs, const char* filename) {
 }
 
 void CommonCLI::savePrefs(FILESYSTEM* fs) {
-#if defined(NRF52_PLATFORM)
+#if defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
+  fs->remove("/com_prefs");
   File file = fs->open("/com_prefs", FILE_O_WRITE);
-  if (file) { file.seek(0); file.truncate(); }
+#elif defined(RP2040_PLATFORM)
+  File file = fs->open("/com_prefs", "w");
 #else
   File file = fs->open("/com_prefs", "w", true);
 #endif
@@ -100,9 +108,11 @@ void CommonCLI::savePrefs(FILESYSTEM* fs) {
     file.write((uint8_t *) &_prefs->allow_read_only, sizeof(_prefs->allow_read_only));  // 114
     file.write((uint8_t *) &_prefs->reserved2, sizeof(_prefs->reserved2));  // 115
     file.write((uint8_t *) &_prefs->bw, sizeof(_prefs->bw));  // 116
-    file.write(pad, 4);   // 120
+    file.write((uint8_t *) &_prefs->agc_reset_interval, sizeof(_prefs->agc_reset_interval));  // 120
+    file.write(pad, 3);   // 121
     file.write((uint8_t *) &_prefs->flood_max, sizeof(_prefs->flood_max));   // 124
     file.write((uint8_t *) &_prefs->flood_advert_interval, sizeof(_prefs->flood_advert_interval));  // 125
+    file.write((uint8_t *) &_prefs->interference_threshold, sizeof(_prefs->interference_threshold));  // 126
 
     file.close();
   }
@@ -134,7 +144,9 @@ void CommonCLI::handleCommand(uint32_t sender_timestamp, const char* command, ch
       uint32_t curr = getRTCClock()->getCurrentTime();
       if (sender_timestamp > curr) {
         getRTCClock()->setCurrentTime(sender_timestamp + 1);
-        strcpy(reply, "OK - clock set");
+        uint32_t now = getRTCClock()->getCurrentTime();
+        DateTime dt = DateTime(now);
+        sprintf(reply, "OK - clock set: %02d:%02d - %d/%d/%d UTC", dt.hour(), dt.minute(), dt.day(), dt.month(), dt.year());
       } else {
         strcpy(reply, "ERR: clock cannot go backwards");
       }
@@ -151,20 +163,31 @@ void CommonCLI::handleCommand(uint32_t sender_timestamp, const char* command, ch
       uint32_t curr = getRTCClock()->getCurrentTime();
       if (secs > curr) {
         getRTCClock()->setCurrentTime(secs);
-        strcpy(reply, "(OK - clock set!)");
+        uint32_t now = getRTCClock()->getCurrentTime();
+        DateTime dt = DateTime(now);
+        sprintf(reply, "OK - clock set: %02d:%02d - %d/%d/%d UTC", dt.hour(), dt.minute(), dt.day(), dt.month(), dt.year());
       } else {
         strcpy(reply, "(ERR: clock cannot go backwards)");
       }
+    } else if (memcmp(command, "neighbors", 9) == 0) {
+      _callbacks->formatNeighborsReply(reply);
     } else if (memcmp(command, "password ", 9) == 0) {
       // change admin password
       StrHelper::strncpy(_prefs->password, &command[9], sizeof(_prefs->password));
       checkAdvertInterval();
       savePrefs();
       sprintf(reply, "password now: %s", _prefs->password);   // echo back just to let admin know for sure!!
+    } else if (memcmp(command, "clear stats", 11) == 0) {
+      _callbacks->clearStats();
+      strcpy(reply, "(OK - stats reset)");
     } else if (memcmp(command, "get ", 4) == 0) {
       const char* config = &command[4];
       if (memcmp(config, "af", 2) == 0) {
         sprintf(reply, "> %s", StrHelper::ftoa(_prefs->airtime_factor));
+      } else if (memcmp(config, "int.thresh", 10) == 0) {
+        sprintf(reply, "> %d", (uint32_t) _prefs->interference_threshold);
+      } else if (memcmp(config, "agc.reset.interval", 18) == 0) {
+        sprintf(reply, "> %d", ((uint32_t) _prefs->agc_reset_interval) * 4);
       } else if (memcmp(config, "allow.read.only", 15) == 0) {
         sprintf(reply, "> %s", _prefs->allow_read_only ? "on" : "off");
       } else if (memcmp(config, "flood.advert.interval", 21) == 0) {
@@ -198,6 +221,11 @@ void CommonCLI::handleCommand(uint32_t sender_timestamp, const char* command, ch
         sprintf(reply, "> %d", (uint32_t) _prefs->tx_power_dbm);
       } else if (memcmp(config, "freq", 4) == 0) {
         sprintf(reply, "> %s", StrHelper::ftoa(_prefs->freq));
+      } else if (memcmp(config, "public.key", 10) == 0) {
+        strcpy(reply, "> ");
+        mesh::Utils::toHex(&reply[2], _callbacks->getSelfIdPubKey(), PUB_KEY_SIZE);
+      } else if (memcmp(config, "role", 4) == 0) {
+        sprintf(reply, "> %s", _callbacks->getRole());
       } else {
         sprintf(reply, "??: %s", config);
       }
@@ -207,16 +235,22 @@ void CommonCLI::handleCommand(uint32_t sender_timestamp, const char* command, ch
         _prefs->airtime_factor = atof(&config[3]);
         savePrefs();
         strcpy(reply, "OK");
+      } else if (memcmp(config, "int.thresh ", 11) == 0) {
+        _prefs->interference_threshold = atoi(&config[11]);
+        savePrefs();
+        strcpy(reply, "OK");
+      } else if (memcmp(config, "agc.reset.interval ", 19) == 0) {
+        _prefs->agc_reset_interval = atoi(&config[19]) / 4;
+        savePrefs();
+        strcpy(reply, "OK");
       } else if (memcmp(config, "allow.read.only ", 16) == 0) {
         _prefs->allow_read_only = memcmp(&config[16], "on", 2) == 0;
         savePrefs();
         strcpy(reply, "OK");
       } else if (memcmp(config, "flood.advert.interval ", 22) == 0) {
         int hours = _atoi(&config[22]);
-        if (hours > 0 && hours < 3) {
-          sprintf(reply, "Error: min is 3 hours");
-        } else if (hours > 48) {
-          strcpy(reply, "Error: max is 48 hours");
+        if ((hours > 0 && hours < 3) || (hours > 48)) {
+          strcpy(reply, "Error: interval range is 3-48 hours");
         } else {
           _prefs->flood_advert_interval = (uint8_t)(hours);
           _callbacks->updateFloodAdvertTimer();
@@ -225,10 +259,8 @@ void CommonCLI::handleCommand(uint32_t sender_timestamp, const char* command, ch
         }
       } else if (memcmp(config, "advert.interval ", 16) == 0) {
         int mins = _atoi(&config[16]);
-        if (mins > 0 && mins < MIN_LOCAL_ADVERT_INTERVAL) {
-          sprintf(reply, "Error: min is %d mins", MIN_LOCAL_ADVERT_INTERVAL);
-        } else if (mins > 240) {
-          strcpy(reply, "Error: max is 240 mins");
+        if ((mins > 0 && mins < MIN_LOCAL_ADVERT_INTERVAL) || (mins > 240)) {
+          sprintf(reply, "Error: interval range is %d-240 minutes", MIN_LOCAL_ADVERT_INTERVAL);
         } else {
           _prefs->advert_interval = (uint8_t)(mins / 2);
           _callbacks->updateAdvertTimer();
@@ -342,6 +374,6 @@ void CommonCLI::handleCommand(uint32_t sender_timestamp, const char* command, ch
       _callbacks->dumpLogFile();
       strcpy(reply, "   EOF");
     } else {
-      sprintf(reply, "Unknown: %s", command);
+      strcpy(reply, "Unknown command");
     }
 }

src/helpers/CommonCLI.h

@@ -24,6 +24,8 @@ struct NodePrefs {  // persisted to file
     uint8_t reserved2;
     float bw;
     uint8_t flood_max;
+    uint8_t interference_threshold;
+    uint8_t agc_reset_interval;   // secs / 4
 };
 
 class CommonCLICallbacks {
@@ -31,6 +33,7 @@ public:
   virtual void savePrefs() = 0;
   virtual const char* getFirmwareVer() = 0;
   virtual const char* getBuildDate() = 0;
+  virtual const char* getRole() = 0;
   virtual bool formatFileSystem() = 0;
   virtual void sendSelfAdvertisement(int delay_millis) = 0;
   virtual void updateAdvertTimer() = 0;
@@ -39,16 +42,19 @@ public:
   virtual void eraseLogFile() = 0;
   virtual void dumpLogFile() = 0;
   virtual void setTxPower(uint8_t power_dbm) = 0;
+  virtual void formatNeighborsReply(char *reply) = 0;
+  virtual const uint8_t* getSelfIdPubKey() = 0;
+  virtual void clearStats() = 0;
 };
 
 class CommonCLI {
-  mesh::Mesh* _mesh;
+  mesh::RTCClock* _rtc;
   NodePrefs* _prefs;
   CommonCLICallbacks* _callbacks;
   mesh::MainBoard* _board;
   char tmp[80];
 
-  mesh::RTCClock* getRTCClock() { return _mesh->getRTCClock(); }
+  mesh::RTCClock* getRTCClock() { return _rtc; }
   void savePrefs() { _callbacks->savePrefs(); }
 
   void checkAdvertInterval();
@@ -56,8 +62,8 @@ class CommonCLI {
   void loadPrefsInt(FILESYSTEM* _fs, const char* filename);
 
 public:
-  CommonCLI(mesh::MainBoard& board, mesh::Mesh* mesh, NodePrefs* prefs, CommonCLICallbacks* callbacks) 
-      : _board(&board), _mesh(mesh), _prefs(prefs), _callbacks(callbacks) { }
+  CommonCLI(mesh::MainBoard& board, mesh::RTCClock& rtc, NodePrefs* prefs, CommonCLICallbacks* callbacks)
+      : _board(&board), _rtc(&rtc), _prefs(prefs), _callbacks(callbacks) { }
 
   void loadPrefs(FILESYSTEM* _fs);
   void savePrefs(FILESYSTEM* _fs);

src/helpers/ContactInfo.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include <Arduino.h>
+#include <Mesh.h>
+
+struct ContactInfo {
+  mesh::Identity id;
+  char name[32];
+  uint8_t type;   // on of ADV_TYPE_*
+  uint8_t flags;
+  int8_t out_path_len;
+  uint8_t out_path[MAX_PATH_SIZE];
+  uint32_t last_advert_timestamp;   // by THEIR clock
+  uint8_t shared_secret[PUB_KEY_SIZE];
+  uint32_t lastmod;  // by OUR clock
+  int32_t gps_lat, gps_lon;    // 6 dec places
+  uint32_t sync_since;
+};

src/helpers/CustomLLCC68.h

@@ -3,14 +3,85 @@
 #include <RadioLib.h>
 
 #define SX126X_IRQ_HEADER_VALID                     0b0000010000  //  4     4     valid LoRa header received
+#define SX126X_IRQ_PREAMBLE_DETECTED           0x04
 
 class CustomLLCC68 : public LLCC68 {
   public:
     CustomLLCC68(Module *mod) : LLCC68(mod) { }
 
+  #ifdef RP2040_PLATFORM
+    bool std_init(SPIClassRP2040* spi = NULL)
+  #else
+    bool std_init(SPIClass* spi = NULL)
+  #endif
+    {
+  #ifdef SX126X_DIO3_TCXO_VOLTAGE
+      float tcxo = SX126X_DIO3_TCXO_VOLTAGE;
+  #else
+      float tcxo = 1.6f;
+  #endif
+
+  #ifdef LORA_CR
+      uint8_t cr = LORA_CR;
+  #else
+      uint8_t cr = 5;
+  #endif
+
+  #if defined(P_LORA_SCLK)
+    #ifdef NRF52_PLATFORM
+      if (spi) { spi->setPins(P_LORA_MISO, P_LORA_SCLK, P_LORA_MOSI); spi->begin(); }
+    #elif defined(RP2040_PLATFORM)
+      if (spi) {
+        spi->setMISO(P_LORA_MISO);
+        //spi->setCS(P_LORA_NSS); // Setting CS results in freeze
+        spi->setSCK(P_LORA_SCLK);
+        spi->setMOSI(P_LORA_MOSI);
+        spi->begin();
+      }
+    #else
+      if (spi) spi->begin(P_LORA_SCLK, P_LORA_MISO, P_LORA_MOSI);
+    #endif
+  #endif
+      int status = begin(LORA_FREQ, LORA_BW, LORA_SF, cr, RADIOLIB_SX126X_SYNC_WORD_PRIVATE, LORA_TX_POWER, 16, tcxo);
+      // if radio init fails with -707/-706, try again with tcxo voltage set to 0.0f
+      if (status == RADIOLIB_ERR_SPI_CMD_FAILED || status == RADIOLIB_ERR_SPI_CMD_INVALID) {
+        #define SX126X_DIO3_TCXO_VOLTAGE (0.0f);
+        tcxo = SX126X_DIO3_TCXO_VOLTAGE;
+        status = begin(LORA_FREQ, LORA_BW, LORA_SF, cr, RADIOLIB_SX126X_SYNC_WORD_PRIVATE, LORA_TX_POWER, 16, tcxo);
+      }
+      if (status != RADIOLIB_ERR_NONE) {
+        Serial.print("ERROR: radio init failed: ");
+        Serial.println(status);
+        return false;  // fail
+      }
+    
+      setCRC(1);
+  
+  #ifdef SX126X_CURRENT_LIMIT
+      setCurrentLimit(SX126X_CURRENT_LIMIT);
+  #endif
+  #ifdef SX126X_DIO2_AS_RF_SWITCH
+      setDio2AsRfSwitch(SX126X_DIO2_AS_RF_SWITCH);
+  #endif
+  #ifdef SX126X_RX_BOOSTED_GAIN
+      setRxBoostedGainMode(SX126X_RX_BOOSTED_GAIN);
+  #endif
+  #if defined(SX126X_RXEN) || defined(SX126X_TXEN)
+    #ifndef SX1262X_RXEN
+      #define SX1262X_RXEN RADIOLIB_NC
+    #endif
+    #ifndef SX1262X_TXEN
+      #define SX1262X_TXEN RADIOLIB_NC
+    #endif
+      setRfSwitchPins(SX126X_RXEN, SX126X_TXEN);
+  #endif 
+
+    return true;  // success
+  }
+
     bool isReceiving() {
       uint16_t irq = getIrqFlags();
-      bool hasPreamble = (irq & SX126X_IRQ_HEADER_VALID);
-      return hasPreamble;
+      bool detected = (irq & SX126X_IRQ_HEADER_VALID) || (irq & SX126X_IRQ_PREAMBLE_DETECTED);
+      return detected;
     }
 };

src/helpers/CustomLLCC68Wrapper.h

@@ -6,18 +6,11 @@
 class CustomLLCC68Wrapper : public RadioLibWrapper {
 public:
   CustomLLCC68Wrapper(CustomLLCC68& radio, mesh::MainBoard& board) : RadioLibWrapper(radio, board) { }
-  bool isReceiving() override { 
-    if (((CustomLLCC68 *)_radio)->isReceiving()) return true;
-
-    idle();  // put sx126x into standby
-    // do some basic CAD (blocks for ~12780 micros (on SF 10)!)
-    bool activity = (((CustomLLCC68 *)_radio)->scanChannel() == RADIOLIB_LORA_DETECTED);
-    if (activity) {
-      startRecv();
-    } else {
-      idle();
-    }
-    return activity;
+  bool isReceivingPacket() override { 
+    return ((CustomLLCC68 *)_radio)->isReceiving();
+  }
+  float getCurrentRSSI() override {
+    return ((CustomLLCC68 *)_radio)->getRSSI(false);
   }
   float getLastRSSI() const override { return ((CustomLLCC68 *)_radio)->getRSSI(); }
   float getLastSNR() const override { return ((CustomLLCC68 *)_radio)->getSNR(); }

src/helpers/CustomLR1110.h

@@ -11,7 +11,7 @@ class CustomLR1110 : public LR1110 {
 
     bool isReceiving() {
       uint16_t irq = getIrqStatus();
-      bool hasPreamble = ((irq & LR1110_IRQ_HEADER_VALID) && (irq & LR1110_IRQ_HAS_PREAMBLE));
-      return hasPreamble;
+      bool detected = ((irq & LR1110_IRQ_HEADER_VALID) || (irq & LR1110_IRQ_HAS_PREAMBLE));
+      return detected;
     }
 };

src/helpers/CustomLR1110Wrapper.h

@@ -6,25 +6,21 @@
 class CustomLR1110Wrapper : public RadioLibWrapper {
 public:
   CustomLR1110Wrapper(CustomLR1110& radio, mesh::MainBoard& board) : RadioLibWrapper(radio, board) { }
-  bool isReceiving() override { 
-    if (((CustomLR1110 *)_radio)->isReceiving()) return true;
-
-    idle();  // put sx126x into standby
-    // do some basic CAD (blocks for ~12780 micros (on SF 10)!)
-    bool activity = (((CustomLR1110 *)_radio)->scanChannel() == RADIOLIB_LORA_DETECTED);
-    if (activity) {
-      startRecv();
-    } else {
-      idle();
-    }
-    return activity;
+  bool isReceivingPacket() override { 
+    return ((CustomLR1110 *)_radio)->isReceiving();
+  }
+  float getCurrentRSSI() override {
+    float rssi = -110;
+    ((CustomLR1110 *)_radio)->getRssiInst(&rssi);
+    return rssi;
   }
 
   void onSendFinished() override {
     RadioLibWrapper::onSendFinished();
-    _radio->setPreambleLength(8); // overcomes weird issues with small and big pkts
+    _radio->setPreambleLength(16); // overcomes weird issues with small and big pkts
   }
 
   float getLastRSSI() const override { return ((CustomLR1110 *)_radio)->getRSSI(); }
   float getLastSNR() const override { return ((CustomLR1110 *)_radio)->getSNR(); }
+  int16_t setRxBoostedGainMode(bool en) { return ((CustomLR1110 *)_radio)->setRxBoostedGainMode(en); };
 };

src/helpers/CustomSTM32WLx.h

@@ -0,0 +1,17 @@
+#pragma once
+
+#include <RadioLib.h>
+
+#define SX126X_IRQ_HEADER_VALID                     0b0000010000  //  4     4     valid LoRa header received
+#define SX126X_IRQ_PREAMBLE_DETECTED           0x04
+
+class CustomSTM32WLx : public STM32WLx {
+  public:
+    CustomSTM32WLx(STM32WLx_Module *mod) : STM32WLx(mod) { }
+
+    bool isReceiving() {
+      uint16_t irq = getIrqFlags();
+      bool detected = (irq & SX126X_IRQ_HEADER_VALID) || (irq & SX126X_IRQ_PREAMBLE_DETECTED);
+      return detected;
+    }
+};

src/helpers/CustomSTM32WLxWrapper.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include "CustomSTM32WLx.h"
+#include "RadioLibWrappers.h"
+#include <math.h>
+
+class CustomSTM32WLxWrapper : public RadioLibWrapper {
+public:
+  CustomSTM32WLxWrapper(CustomSTM32WLx& radio, mesh::MainBoard& board) : RadioLibWrapper(radio, board) { }
+  bool isReceivingPacket() override { 
+    return ((CustomSTM32WLx *)_radio)->isReceiving();
+  }
+  float getCurrentRSSI() override {
+    return ((CustomSTM32WLx *)_radio)->getRSSI(false);
+  }
+  float getLastRSSI() const override { return ((CustomSTM32WLx *)_radio)->getRSSI(); }
+  float getLastSNR() const override { return ((CustomSTM32WLx *)_radio)->getSNR(); }
+
+  float packetScore(float snr, int packet_len) override {
+    int sf = ((CustomSTM32WLx *)_radio)->spreadingFactor;
+    return packetScoreInt(snr, sf, packet_len);
+  }
+};

src/helpers/CustomSX1262.h

@@ -3,14 +3,85 @@
 #include <RadioLib.h>
 
 #define SX126X_IRQ_HEADER_VALID                     0b0000010000  //  4     4     valid LoRa header received
+#define SX126X_IRQ_PREAMBLE_DETECTED           0x04
 
 class CustomSX1262 : public SX1262 {
   public:
     CustomSX1262(Module *mod) : SX1262(mod) { }
 
+  #ifdef RP2040_PLATFORM
+    bool std_init(SPIClassRP2040* spi = NULL)
+  #else
+    bool std_init(SPIClass* spi = NULL)
+  #endif
+    {
+  #ifdef SX126X_DIO3_TCXO_VOLTAGE
+      float tcxo = SX126X_DIO3_TCXO_VOLTAGE;
+  #else
+      float tcxo = 1.6f;
+  #endif
+
+  #ifdef LORA_CR
+      uint8_t cr = LORA_CR;
+  #else
+      uint8_t cr = 5;
+  #endif
+
+  #if defined(P_LORA_SCLK)
+    #ifdef NRF52_PLATFORM
+      if (spi) { spi->setPins(P_LORA_MISO, P_LORA_SCLK, P_LORA_MOSI); spi->begin(); }
+    #elif defined(RP2040_PLATFORM)
+      if (spi) {
+        spi->setMISO(P_LORA_MISO);
+        //spi->setCS(P_LORA_NSS); // Setting CS results in freeze
+        spi->setSCK(P_LORA_SCLK);
+        spi->setMOSI(P_LORA_MOSI);
+        spi->begin();
+      }
+    #else
+      if (spi) spi->begin(P_LORA_SCLK, P_LORA_MISO, P_LORA_MOSI);
+    #endif
+  #endif
+      int status = begin(LORA_FREQ, LORA_BW, LORA_SF, cr, RADIOLIB_SX126X_SYNC_WORD_PRIVATE, LORA_TX_POWER, 16, tcxo);
+      // if radio init fails with -707/-706, try again with tcxo voltage set to 0.0f
+      if (status == RADIOLIB_ERR_SPI_CMD_FAILED || status == RADIOLIB_ERR_SPI_CMD_INVALID) {
+        #define SX126X_DIO3_TCXO_VOLTAGE (0.0f);
+        tcxo = SX126X_DIO3_TCXO_VOLTAGE;
+        status = begin(LORA_FREQ, LORA_BW, LORA_SF, cr, RADIOLIB_SX126X_SYNC_WORD_PRIVATE, LORA_TX_POWER, 16, tcxo);
+      }
+      if (status != RADIOLIB_ERR_NONE) {
+        Serial.print("ERROR: radio init failed: ");
+        Serial.println(status);
+        return false;  // fail
+      }
+    
+      setCRC(1);
+  
+  #ifdef SX126X_CURRENT_LIMIT
+      setCurrentLimit(SX126X_CURRENT_LIMIT);
+  #endif
+  #ifdef SX126X_DIO2_AS_RF_SWITCH
+      setDio2AsRfSwitch(SX126X_DIO2_AS_RF_SWITCH);
+  #endif
+  #ifdef SX126X_RX_BOOSTED_GAIN
+      setRxBoostedGainMode(SX126X_RX_BOOSTED_GAIN);
+  #endif
+  #if defined(SX126X_RXEN) || defined(SX126X_TXEN)
+    #ifndef SX126X_RXEN
+      #define SX126X_RXEN RADIOLIB_NC
+    #endif
+    #ifndef SX126X_TXEN
+      #define SX126X_TXEN RADIOLIB_NC
+    #endif
+      setRfSwitchPins(SX126X_RXEN, SX126X_TXEN);
+  #endif 
+
+      return true;  // success
+    }
+
     bool isReceiving() {
       uint16_t irq = getIrqFlags();
-      bool hasPreamble = (irq & SX126X_IRQ_HEADER_VALID);
-      return hasPreamble;
+      bool detected = (irq & SX126X_IRQ_HEADER_VALID) || (irq & SX126X_IRQ_PREAMBLE_DETECTED);
+      return detected;
     }
 };

src/helpers/CustomSX1262Wrapper.h

@@ -2,23 +2,15 @@
 
 #include "CustomSX1262.h"
 #include "RadioLibWrappers.h"
-#include <math.h>
 
 class CustomSX1262Wrapper : public RadioLibWrapper {
 public:
   CustomSX1262Wrapper(CustomSX1262& radio, mesh::MainBoard& board) : RadioLibWrapper(radio, board) { }
-  bool isReceiving() override { 
-    if (((CustomSX1262 *)_radio)->isReceiving()) return true;
-
-    idle();  // put sx126x into standby
-    // do some basic CAD (blocks for ~12780 micros (on SF 10)!)
-    bool activity = (((CustomSX1262 *)_radio)->scanChannel() == RADIOLIB_LORA_DETECTED);
-    if (activity) {
-      startRecv();
-    } else {
-      idle();
-    }
-    return activity;
+  bool isReceivingPacket() override { 
+    return ((CustomSX1262 *)_radio)->isReceiving();
+  }
+  float getCurrentRSSI() override {
+    return ((CustomSX1262 *)_radio)->getRSSI(false);
   }
   float getLastRSSI() const override { return ((CustomSX1262 *)_radio)->getRSSI(); }
   float getLastSNR() const override { return ((CustomSX1262 *)_radio)->getSNR(); }

src/helpers/CustomSX1268.h

@@ -3,14 +3,85 @@
 #include <RadioLib.h>
 
 #define SX126X_IRQ_HEADER_VALID                     0b0000010000  //  4     4     valid LoRa header received
+#define SX126X_IRQ_PREAMBLE_DETECTED           0x04
 
 class CustomSX1268 : public SX1268 {
   public:
     CustomSX1268(Module *mod) : SX1268(mod) { }
 
+  #ifdef RP2040_PLATFORM
+    bool std_init(SPIClassRP2040* spi = NULL)
+  #else
+    bool std_init(SPIClass* spi = NULL)
+  #endif
+    {
+  #ifdef SX126X_DIO3_TCXO_VOLTAGE
+      float tcxo = SX126X_DIO3_TCXO_VOLTAGE;
+  #else
+      float tcxo = 1.6f;
+  #endif
+
+  #ifdef LORA_CR
+      uint8_t cr = LORA_CR;
+  #else
+      uint8_t cr = 5;
+  #endif
+
+  #if defined(P_LORA_SCLK)
+    #ifdef NRF52_PLATFORM
+      if (spi) { spi->setPins(P_LORA_MISO, P_LORA_SCLK, P_LORA_MOSI); spi->begin(); }
+    #elif defined(RP2040_PLATFORM)
+      if (spi) {
+        spi->setMISO(P_LORA_MISO);
+        //spi->setCS(P_LORA_NSS); // Setting CS results in freeze
+        spi->setSCK(P_LORA_SCLK);
+        spi->setMOSI(P_LORA_MOSI);
+        spi->begin();
+      }
+    #else
+      if (spi) spi->begin(P_LORA_SCLK, P_LORA_MISO, P_LORA_MOSI);
+    #endif
+  #endif
+      int status = begin(LORA_FREQ, LORA_BW, LORA_SF, cr, RADIOLIB_SX126X_SYNC_WORD_PRIVATE, LORA_TX_POWER, 16, tcxo);
+      // if radio init fails with -707/-706, try again with tcxo voltage set to 0.0f
+      if (status == RADIOLIB_ERR_SPI_CMD_FAILED || status == RADIOLIB_ERR_SPI_CMD_INVALID) {
+        #define SX126X_DIO3_TCXO_VOLTAGE (0.0f);
+        tcxo = SX126X_DIO3_TCXO_VOLTAGE;
+        status = begin(LORA_FREQ, LORA_BW, LORA_SF, cr, RADIOLIB_SX126X_SYNC_WORD_PRIVATE, LORA_TX_POWER, 16, tcxo);
+      }
+      if (status != RADIOLIB_ERR_NONE) {
+        Serial.print("ERROR: radio init failed: ");
+        Serial.println(status);
+        return false;  // fail
+      }
+    
+      setCRC(1);
+  
+  #ifdef SX126X_CURRENT_LIMIT
+      setCurrentLimit(SX126X_CURRENT_LIMIT);
+  #endif
+  #ifdef SX126X_DIO2_AS_RF_SWITCH
+      setDio2AsRfSwitch(SX126X_DIO2_AS_RF_SWITCH);
+  #endif
+  #ifdef SX126X_RX_BOOSTED_GAIN
+      setRxBoostedGainMode(SX126X_RX_BOOSTED_GAIN);
+  #endif
+  #if defined(SX126X_RXEN) || defined(SX126X_TXEN)
+    #ifndef SX1262X_RXEN
+      #define SX1262X_RXEN RADIOLIB_NC
+    #endif
+    #ifndef SX1262X_TXEN
+      #define SX1262X_TXEN RADIOLIB_NC
+    #endif
+      setRfSwitchPins(SX126X_RXEN, SX126X_TXEN);
+  #endif 
+
+      return true;  // success
+    }
+
     bool isReceiving() {
       uint16_t irq = getIrqFlags();
-      bool hasPreamble = (irq & SX126X_IRQ_HEADER_VALID);
-      return hasPreamble;
+      bool detected = (irq & SX126X_IRQ_HEADER_VALID) || (irq & SX126X_IRQ_PREAMBLE_DETECTED);
+      return detected;
     }
 };

src/helpers/CustomSX1268Wrapper.h

@@ -6,18 +6,11 @@
 class CustomSX1268Wrapper : public RadioLibWrapper {
 public:
   CustomSX1268Wrapper(CustomSX1268& radio, mesh::MainBoard& board) : RadioLibWrapper(radio, board) { }
-  bool isReceiving() override { 
-    if (((CustomSX1268 *)_radio)->isReceiving()) return true;
-
-    idle();  // put sx126x into standby
-    // do some basic CAD (blocks for ~12780 micros (on SF 10)!)
-    bool activity = (((CustomSX1268 *)_radio)->scanChannel() == RADIOLIB_LORA_DETECTED);
-    if (activity) {
-      startRecv();
-    } else {
-      idle();
-    }
-    return activity;
+  bool isReceivingPacket() override { 
+    return ((CustomSX1268 *)_radio)->isReceiving();
+  }
+  float getCurrentRSSI() override {
+    return ((CustomSX1268 *)_radio)->getRSSI(false);
   }
   float getLastRSSI() const override { return ((CustomSX1268 *)_radio)->getRSSI(); }
   float getLastSNR() const override { return ((CustomSX1268 *)_radio)->getSNR(); }

src/helpers/CustomSX1276.h

@@ -12,10 +12,63 @@ class CustomSX1276 : public SX1276 {
   public:
     CustomSX1276(Module *mod) : SX1276(mod) { }
 
+  #ifdef RP2040_PLATFORM
+    bool std_init(SPIClassRP2040* spi = NULL)
+  #else
+    bool std_init(SPIClass* spi = NULL)
+  #endif
+    {
+  #ifdef LORA_CR
+      uint8_t cr = LORA_CR;
+  #else
+      uint8_t cr = 5;
+  #endif
+
+  #if defined(P_LORA_SCLK)
+    #ifdef NRF52_PLATFORM
+      if (spi) { spi->setPins(P_LORA_MISO, P_LORA_SCLK, P_LORA_MOSI); spi->begin(); }
+    #elif defined(RP2040_PLATFORM)
+      if (spi) {
+        spi->setMISO(P_LORA_MISO);
+        //spi->setCS(P_LORA_NSS); // Setting CS results in freeze
+        spi->setSCK(P_LORA_SCLK);
+        spi->setMOSI(P_LORA_MOSI);
+        spi->begin();
+      }
+    #else
+      if (spi) spi->begin(P_LORA_SCLK, P_LORA_MISO, P_LORA_MOSI);
+    #endif
+  #endif
+      int status = begin(LORA_FREQ, LORA_BW, LORA_SF, cr, RADIOLIB_SX126X_SYNC_WORD_PRIVATE, LORA_TX_POWER, 16);
+      // if radio init fails with -707/-706, try again with tcxo voltage set to 0.0f
+      if (status != RADIOLIB_ERR_NONE) {
+        Serial.print("ERROR: radio init failed: ");
+        Serial.println(status);
+        return false;  // fail
+      }
+  #ifdef SX127X_CURRENT_LIMIT
+      setCurrentLimit(SX127X_CURRENT_LIMIT);
+  #endif
+
+  #if defined(SX176X_RXEN) || defined(SX176X_TXEN)
+    #ifndef SX176X_RXEN
+      #define SX176X_RXEN RADIOLIB_NC
+    #endif
+    #ifndef SX176X_TXEN
+      #define SX176X_TXEN RADIOLIB_NC
+    #endif
+      setRfSwitchPins(SX176X_RXEN, SX176X_TXEN);
+  #endif
+
+      setCRC(1);
+
+      return true;  // success
+    }
+
     bool isReceiving() {
       return (getModemStatus() &
-         (RH_RF95_MODEM_STATUS_SIGNAL_DETECTED 
-        | RH_RF95_MODEM_STATUS_SIGNAL_SYNCHRONIZED 
+         (RH_RF95_MODEM_STATUS_SIGNAL_DETECTED
+        | RH_RF95_MODEM_STATUS_SIGNAL_SYNCHRONIZED
         | RH_RF95_MODEM_STATUS_HEADER_INFO_VALID)) != 0;
     }
 
@@ -23,7 +76,7 @@ class CustomSX1276 : public SX1276 {
       // start CAD
       int16_t state = startChannelScan();
       RADIOLIB_ASSERT(state);
- 
+
       // wait for channel activity detected or timeout
       unsigned long timeout = millis() + 16;
       while(!this->mod->hal->digitalRead(this->mod->getIrq()) && millis() < timeout) {

src/helpers/CustomSX1276Wrapper.h

@@ -6,18 +6,11 @@
 class CustomSX1276Wrapper : public RadioLibWrapper {
 public:
   CustomSX1276Wrapper(CustomSX1276& radio, mesh::MainBoard& board) : RadioLibWrapper(radio, board) { }
-  bool isReceiving() override { 
-    if (((CustomSX1276 *)_radio)->isReceiving()) return true;
-
-    idle();  // put into standby
-    // do some basic CAD (blocks for ~12780 micros (on SF 10)!)
-    bool activity = (((CustomSX1276 *)_radio)->tryScanChannel() == RADIOLIB_PREAMBLE_DETECTED);
-    if (activity) {
-      startRecv();
-    } else {
-      idle();
-    }
-    return activity;
+  bool isReceivingPacket() override { 
+    return ((CustomSX1276 *)_radio)->isReceiving();
+  }
+  float getCurrentRSSI() override {
+    return ((CustomSX1276 *)_radio)->getRSSI(false);
   }
   float getLastRSSI() const override { return ((CustomSX1276 *)_radio)->getRSSI(); }
   float getLastSNR() const override { return ((CustomSX1276 *)_radio)->getSNR(); }

src/helpers/ESP32Board.cpp

@@ -2,12 +2,14 @@
 
 #include "ESP32Board.h"
 
-#if defined(ADMIN_PASSWORD)   // Repeater or Room Server only
+#if defined(ADMIN_PASSWORD) && !defined(DISABLE_WIFI_OTA)   // Repeater or Room Server only
 #include <WiFi.h>
 #include <AsyncTCP.h>
 #include <ESPAsyncWebServer.h>
 #include <AsyncElegantOTA.h>
 
+#include <SPIFFS.h>
+
 bool ESP32Board::startOTAUpdate(const char* id, char reply[]) {
   WiFi.softAP("MeshCore-OTA", NULL);
 
@@ -24,6 +26,9 @@ bool ESP32Board::startOTAUpdate(const char* id, char reply[]) {
   server->on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
     request->send(200, "text/html", home_buf);
   });
+  server->on("/log", HTTP_GET, [](AsyncWebServerRequest *request) {
+    request->send(SPIFFS, "/packet_log", "text/plain");
+  });
 
   AsyncElegantOTA.setID(id_buf);
   AsyncElegantOTA.begin(server);    // Start ElegantOTA

src/helpers/ESP32Board.h

@@ -34,7 +34,9 @@ public:
   #endif
 
   #if defined(PIN_BOARD_SDA) && defined(PIN_BOARD_SCL)
+   #if PIN_BOARD_SDA >= 0 && PIN_BOARD_SCL >= 0
     Wire.begin(PIN_BOARD_SDA, PIN_BOARD_SCL);
+   #endif
   #else
     Wire.begin();
   #endif
@@ -49,6 +51,15 @@ public:
   void onAfterTransmit() override {
     digitalWrite(P_LORA_TX_LED, LOW);   // turn TX LED off
   }
+#elif defined(P_LORA_TX_NEOPIXEL_LED)
+  #define NEOPIXEL_BRIGHTNESS    64  // white brightness (max 255)
+
+  void onBeforeTransmit() override {
+    neopixelWrite(P_LORA_TX_NEOPIXEL_LED, NEOPIXEL_BRIGHTNESS, NEOPIXEL_BRIGHTNESS, NEOPIXEL_BRIGHTNESS);   // turn TX neopixel on (White)
+  }
+  void onAfterTransmit() override {
+    neopixelWrite(P_LORA_TX_NEOPIXEL_LED, 0, 0, 0);   // turn TX neopixel off
+  }
 #endif
 
   uint16_t getBattMilliVolts() override {

src/helpers/HeltecV2Board.h

@@ -68,7 +68,7 @@ public:
     }
     raw = raw / 8;
 
-    return (1.883 * (2 / 1024.0) * raw) * 1000;
+    return (1.98 * (2 / 1024.0) * raw) * 1000;
   }
 
   const char* getManufacturerName() const override {

src/helpers/HeltecV3Board.h

@@ -1,8 +1,10 @@
 #pragma once
 
 #include <Arduino.h>
+#include <helpers/RefCountedDigitalPin.h>
 
 // LoRa radio module pins for Heltec V3
+// Also for Heltec Wireless Tracker/Paper
 #define  P_LORA_DIO_1   14
 #define  P_LORA_NSS      8
 #define  P_LORA_RESET   RADIOLIB_NC
@@ -12,12 +14,15 @@
 #define  P_LORA_MOSI    10
 
 // built-ins
-#define  PIN_VBAT_READ    1
-#define  PIN_ADC_CTRL    37
+#ifndef PIN_VBAT_READ              // set in platformio.ini for boards like Heltec Wireless Paper (20)
+  #define  PIN_VBAT_READ    1
+#endif
+#ifndef PIN_ADC_CTRL              // set in platformio.ini for Heltec Wireless Tracker (2)
+  #define  PIN_ADC_CTRL    37
+#endif
 #define  PIN_ADC_CTRL_ACTIVE    LOW
 #define  PIN_ADC_CTRL_INACTIVE  HIGH
-#define  PIN_LED_BUILTIN 35
-#define  PIN_VEXT_EN     36
+//#define  PIN_LED_BUILTIN 35
 
 #include "ESP32Board.h"
 
@@ -28,6 +33,10 @@ private:
   bool adc_active_state;
 
 public:
+  RefCountedDigitalPin periph_power;
+
+  HeltecV3Board() : periph_power(PIN_VEXT_EN) { }
+
   void begin() {
     ESP32Board::begin();
 
@@ -38,8 +47,7 @@ public:
     pinMode(PIN_ADC_CTRL, OUTPUT);
     digitalWrite(PIN_ADC_CTRL, !adc_active_state); // Initially inactive
 
-    pinMode(PIN_VEXT_EN, OUTPUT);
-    digitalWrite(PIN_VEXT_EN, LOW);  // for V3.2 boards
+    periph_power.begin();
 
     esp_reset_reason_t reason = esp_reset_reason();
     if (reason == ESP_RST_DEEPSLEEP) {
@@ -93,7 +101,7 @@ public:
 
     digitalWrite(PIN_ADC_CTRL, !adc_active_state);
 
-    return (5.2 * (3.3 / 1024.0) * raw) * 1000;
+    return (5.42 * (3.3 / 1024.0) * raw) * 1000;
   }
 
   const char* getManufacturerName() const override {

src/helpers/IdentityStore.cpp

@@ -5,7 +5,11 @@ bool IdentityStore::load(const char *name, mesh::LocalIdentity& id) {
   char filename[40];
   sprintf(filename, "%s/%s.id", _dir, name);
   if (_fs->exists(filename)) {
+#if defined(RP2040_PLATFORM)
+    File file = _fs->open(filename, "r");
+#else
     File file = _fs->open(filename);
+#endif
     if (file) {
       loaded = id.readFrom(file);
       file.close();
@@ -19,7 +23,11 @@ bool IdentityStore::load(const char *name, mesh::LocalIdentity& id, char display
   char filename[40];
   sprintf(filename, "%s/%s.id", _dir, name);
   if (_fs->exists(filename)) {
+#if defined(RP2040_PLATFORM)
+    File file = _fs->open(filename, "r");
+#else
     File file = _fs->open(filename);
+#endif
     if (file) {
       loaded = id.readFrom(file);
 
@@ -38,9 +46,11 @@ bool IdentityStore::save(const char *name, const mesh::LocalIdentity& id) {
   char filename[40];
   sprintf(filename, "%s/%s.id", _dir, name);
 
-#if defined(NRF52_PLATFORM)
+#if defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
+  _fs->remove(filename);
   File file = _fs->open(filename, FILE_O_WRITE);
-  if (file) { file.seek(0); file.truncate(); }
+#elif defined(RP2040_PLATFORM)
+  File file = _fs->open(filename, "w");
 #else
   File file = _fs->open(filename, "w", true);
 #endif
@@ -58,9 +68,11 @@ bool IdentityStore::save(const char *name, const mesh::LocalIdentity& id, const
   char filename[40];
   sprintf(filename, "%s/%s.id", _dir, name);
 
-#if defined(NRF52_PLATFORM)
+#if defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
+  _fs->remove(filename);
   File file = _fs->open(filename, FILE_O_WRITE);
-  if (file) { file.seek(0); file.truncate(); }
+#elif defined(RP2040_PLATFORM)
+  File file = _fs->open(filename, "w");
 #else
   File file = _fs->open(filename, "w", true);
 #endif

src/helpers/IdentityStore.h

@@ -1,9 +1,9 @@
 #pragma once
 
-#if defined(ESP32)
+#if defined(ESP32) || defined(RP2040_PLATFORM)
   #include <FS.h>
   #define FILESYSTEM  fs::FS
-#elif defined(NRF52_PLATFORM)
+#elif defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
   #include <Adafruit_LittleFS.h>
   #define FILESYSTEM  Adafruit_LittleFS
 
@@ -18,7 +18,7 @@ class IdentityStore {
 public:
   IdentityStore(FILESYSTEM& fs, const char* dir): _fs(&fs), _dir(dir) { }
 
-  void begin() { _fs->mkdir(_dir); }
+  void begin() { if (_dir && _dir[0] == '/') { _fs->mkdir(_dir); } }
   bool load(const char *name, mesh::LocalIdentity& id);
   bool load(const char *name, mesh::LocalIdentity& id, char display_name[], int max_name_sz);
   bool save(const char *name, const mesh::LocalIdentity& id);

src/helpers/MeshadventurerBoard.h

@@ -1,43 +1,27 @@
 #pragma once
 
-
-#include <Wire.h>
 #include <Arduino.h>
-#include "XPowersLib.h"
 
-// Defined using AXP2102
-#define XPOWERS_CHIP_AXP2101
-
-// LoRa radio module pins for TBeam
-#define  P_LORA_DIO_0   26
-#define  P_LORA_DIO_2   32
+// LoRa radio module pins for Meshadventurer
 #define  P_LORA_DIO_1   33
 #define  P_LORA_NSS     18
-#define  P_LORA_RESET   14
-#define  P_LORA_BUSY    RADIOLIB_NC
+#define  P_LORA_RESET   23
+#define  P_LORA_BUSY    32
 #define  P_LORA_SCLK     5
 #define  P_LORA_MISO    19
 #define  P_LORA_MOSI    27
 
-// built-ins
-//#define  PIN_VBAT_READ   37
-//#define  PIN_LED_BUILTIN 25
+#define  PIN_VBAT_READ    35
 
 #include "ESP32Board.h"
 
 #include <driver/rtc_io.h>
 
-class TBeamBoard : public ESP32Board {
-  XPowersAXP2101 power;
+class MeshadventurerBoard : public ESP32Board {
 
 public:
   void begin() {
     ESP32Board::begin();
-    
-    power.setALDO2Voltage(3300);
-    power.enableALDO2();
-
-    pinMode(38,INPUT_PULLUP);
 
     esp_reset_reason_t reason = esp_reset_reason();
     if (reason == ESP_RST_DEEPSLEEP) {
@@ -54,7 +38,7 @@ public:
   void enterDeepSleep(uint32_t secs, int pin_wake_btn = -1) {
     esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_ON);
 
-    // Make sure the DIO1 and NSS GPIOs are hold on required levels during deep sleep
+    // Make sure the DIO1 and NSS GPIOs are held on required levels during deep sleep 
     rtc_gpio_set_direction((gpio_num_t)P_LORA_DIO_1, RTC_GPIO_MODE_INPUT_ONLY);
     rtc_gpio_pulldown_en((gpio_num_t)P_LORA_DIO_1);
 
@@ -74,11 +58,24 @@ public:
     esp_deep_sleep_start();   // CPU halts here and never returns!
   }
 
+  void powerOff() override {
+    // TODO: re-enable this when there is a definite wake-up source pin:
+    //  enterDeepSleep(0);
+  }
+
   uint16_t getBattMilliVolts() override {
-    return 0;
+    analogReadResolution(12);
+
+    uint32_t raw = 0;
+    for (int i = 0; i < 4; i++) {
+      raw += analogReadMilliVolts(PIN_VBAT_READ);
+    }
+    raw = raw / 4;
+
+    return (2 * raw);
   }
 
   const char* getManufacturerName() const override {
-    return "LilyGo T-Beam";
+    return "Meshadventurer";
   }
 };

src/helpers/RadioLibWrappers.cpp

@@ -8,6 +8,9 @@
 #define STATE_TX_DONE    4
 #define STATE_INT_READY 16
 
+#define NUM_NOISE_FLOOR_SAMPLES  64
+#define SAMPLING_THRESHOLD  14
+
 static volatile uint8_t state = STATE_IDLE;
 
 // this function is called when a complete packet
@@ -28,6 +31,13 @@ void RadioLibWrapper::begin() {
   if (_board->getStartupReason() == BD_STARTUP_RX_PACKET) {  // received a LoRa packet (while in deep sleep)
     setFlag(); // LoRa packet is already received
   }
+
+  _noise_floor = 0;
+  _threshold = 0;
+
+  // start average out some samples
+  _num_floor_samples = 0;
+  _floor_sample_sum = 0;
 }
 
 void RadioLibWrapper::idle() {
@@ -35,6 +45,43 @@ void RadioLibWrapper::idle() {
   state = STATE_IDLE;   // need another startReceive()
 }
 
+void RadioLibWrapper::triggerNoiseFloorCalibrate(int threshold) {
+  _threshold = threshold;
+  if (_num_floor_samples >= NUM_NOISE_FLOOR_SAMPLES) {  // ignore trigger if currently sampling
+    _num_floor_samples = 0;
+    _floor_sample_sum = 0;
+  }
+}
+
+void RadioLibWrapper::resetAGC() {
+  // make sure we're not mid-receive of packet!
+  if ((state & STATE_INT_READY) != 0 || isReceivingPacket()) return;
+
+  // NOTE: according to higher powers, just issuing RadioLib's startReceive() will reset the AGC.
+  //      revisit this if a better impl is discovered.
+  state = STATE_IDLE;   // trigger a startReceive()
+}
+
+void RadioLibWrapper::loop() {
+  if (state == STATE_RX && _num_floor_samples < NUM_NOISE_FLOOR_SAMPLES) {
+    if (!isReceivingPacket()) {
+      int rssi = getCurrentRSSI();
+      if (rssi < _noise_floor + SAMPLING_THRESHOLD) {  // only consider samples below current floor + sampling THRESHOLD
+        _num_floor_samples++;
+        _floor_sample_sum += rssi;
+      }
+    }
+  } else if (_num_floor_samples >= NUM_NOISE_FLOOR_SAMPLES && _floor_sample_sum != 0) {
+    _noise_floor = _floor_sample_sum / NUM_NOISE_FLOOR_SAMPLES;
+    if (_noise_floor < -120) {
+      _noise_floor = -120;    // clamp to lower bound of -120dBi
+    }
+    _floor_sample_sum = 0;
+
+    MESH_DEBUG_PRINTLN("RadioLibWrapper: noise_floor = %d", (int)_noise_floor);
+  }
+}
+
 void RadioLibWrapper::startRecv() {
   int err = _radio->startReceive();
   if (err == RADIOLIB_ERR_NONE) {
@@ -44,6 +91,10 @@ void RadioLibWrapper::startRecv() {
   }
 }
 
+bool RadioLibWrapper::isInRecvMode() const {
+  return (state & ~STATE_INT_READY) == STATE_RX;
+}
+
 int RadioLibWrapper::recvRaw(uint8_t* bytes, int sz) {
   if (state & STATE_INT_READY) {
     int len = _radio->getPacketLength();
@@ -77,13 +128,16 @@ uint32_t RadioLibWrapper::getEstAirtimeFor(int len_bytes) {
   return _radio->getTimeOnAir(len_bytes) / 1000;
 }
 
-void RadioLibWrapper::startSendRaw(const uint8_t* bytes, int len) {
-  state = STATE_TX_WAIT;
+bool RadioLibWrapper::startSendRaw(const uint8_t* bytes, int len) {
   _board->onBeforeTransmit();
   int err = _radio->startTransmit((uint8_t *) bytes, len);
-  if (err != RADIOLIB_ERR_NONE) {
-    MESH_DEBUG_PRINTLN("RadioLibWrapper: error: startTransmit(%d)", err);
+  if (err == RADIOLIB_ERR_NONE) {
+    state = STATE_TX_WAIT;
+    return true;
   }
+  MESH_DEBUG_PRINTLN("RadioLibWrapper: error: startTransmit(%d)", err);
+  idle();   // trigger another startRecv()
+  return false;
 }
 
 bool RadioLibWrapper::isSendComplete() {
@@ -101,6 +155,12 @@ void RadioLibWrapper::onSendFinished() {
   state = STATE_IDLE;
 }
 
+bool RadioLibWrapper::isChannelActive() {
+  return _threshold == 0 
+          ? false    // interference check is disabled
+          : getCurrentRSSI() > _noise_floor + _threshold;
+}
+
 float RadioLibWrapper::getLastRSSI() const {
   return _radio->getRSSI();
 }

src/helpers/RadioLibWrappers.h

@@ -8,10 +8,14 @@ protected:
   PhysicalLayer* _radio;
   mesh::MainBoard* _board;
   uint32_t n_recv, n_sent;
+  int16_t _noise_floor, _threshold;
+  uint16_t _num_floor_samples;
+  int32_t _floor_sample_sum;
 
   void idle();
   void startRecv();
   float packetScoreInt(float snr, int sf, int packet_len);
+  virtual bool isReceivingPacket() =0;
 
 public:
   RadioLibWrapper(PhysicalLayer& radio, mesh::MainBoard& board) : _radio(&radio), _board(&board) { n_recv = n_sent = 0; }
@@ -19,12 +23,30 @@ public:
   void begin() override;
   int recvRaw(uint8_t* bytes, int sz) override;
   uint32_t getEstAirtimeFor(int len_bytes) override;
-  void startSendRaw(const uint8_t* bytes, int len) override;
+  bool startSendRaw(const uint8_t* bytes, int len) override;
   bool isSendComplete() override;
   void onSendFinished() override;
+  bool isInRecvMode() const override;
+  bool isChannelActive();
+
+  bool isReceiving() override { 
+    if (isReceivingPacket()) return true;
+
+    return isChannelActive();
+  }
+
+  virtual float getCurrentRSSI() =0;
+
+  int getNoiseFloor() const override { return _noise_floor; }
+  void triggerNoiseFloorCalibrate(int threshold) override;
+  void resetAGC() override;
+
+  void loop() override;
 
   uint32_t getPacketsRecv() const { return n_recv; }
   uint32_t getPacketsSent() const { return n_sent; }
+  void resetStats() { n_recv = n_sent = 0; }
+
   virtual float getLastRSSI() const override;
   virtual float getLastSNR() const override;
 

src/helpers/RefCountedDigitalPin.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <Arduino.h>
+
+class RefCountedDigitalPin {
+  uint8_t _pin;
+  int8_t _claims = 0;
+
+public:
+  RefCountedDigitalPin(uint8_t pin): _pin(pin) { }
+
+  void begin() {
+    pinMode(_pin, OUTPUT);
+    digitalWrite(_pin, LOW);  // initial state
+  }
+
+  void claim() {
+    _claims++;
+    if (_claims > 0) {
+      digitalWrite(_pin, HIGH);
+    }
+  }
+  void release() {
+    _claims--;
+    if (_claims == 0) {
+      digitalWrite(_pin, LOW);
+    }
+  }
+};

src/helpers/SensorManager.h

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <CayenneLPP.h>
+
+#define TELEM_PERM_BASE         0x01   // 'base' permission includes battery
+#define TELEM_PERM_LOCATION     0x02
+#define TELEM_PERM_ENVIRONMENT  0x04   // permission to access environment sensors
+
+#define TELEM_CHANNEL_SELF   1   // LPP data channel for 'self' device
+
+class SensorManager {
+public:
+  double node_lat, node_lon;  // modify these, if you want to affect Advert location
+  double node_altitude;       // altitude in meters
+
+  SensorManager() { node_lat = 0; node_lon = 0; node_altitude = 0; }
+  virtual bool begin() { return false; }
+  virtual bool querySensors(uint8_t requester_permissions, CayenneLPP& telemetry) { return false; }
+  virtual void loop() { }
+  virtual int getNumSettings() const { return 0; }
+  virtual const char* getSettingName(int i) const { return NULL; }
+  virtual const char* getSettingValue(int i) const { return NULL; }
+  virtual bool setSettingValue(const char* name, const char* value) { return false; }
+};

src/helpers/SimpleMeshTables.h

@@ -80,7 +80,32 @@ public:
     return false;
   }
 
+  void clear(const mesh::Packet* packet) override {
+    if (packet->getPayloadType() == PAYLOAD_TYPE_ACK) {
+      uint32_t ack;
+      memcpy(&ack, packet->payload, 4);
+      for (int i = 0; i < MAX_PACKET_ACKS; i++) {
+        if (ack == _acks[i]) { 
+          _acks[i] = 0;
+          break;
+        }
+      }
+    } else {
+      uint8_t hash[MAX_HASH_SIZE];
+      packet->calculatePacketHash(hash);
+
+      uint8_t* sp = _hashes;
+      for (int i = 0; i < MAX_PACKET_HASHES; i++, sp += MAX_HASH_SIZE) {
+        if (memcmp(hash, sp, MAX_HASH_SIZE) == 0) { 
+          memset(sp, 0, MAX_HASH_SIZE);
+          break;
+        }
+      }
+    }
+  }
+
   uint32_t getNumDirectDups() const { return _direct_dups; }
   uint32_t getNumFloodDups() const { return _flood_dups; }
 
+  void resetStats() { _direct_dups = _flood_dups = 0; }
 };

src/helpers/StaticPoolPacketManager.cpp

@@ -8,6 +8,15 @@ PacketQueue::PacketQueue(int max_entries) {
   _num = 0;
 }
 
+int PacketQueue::countBefore(uint32_t now) const {
+  int n = 0;
+  for (int j = 0; j < _num; j++) {
+    if (_schedule_table[j] > now) continue;   // scheduled for future... ignore for now
+    n++;
+  }
+  return n;
+}
+
 mesh::Packet* PacketQueue::get(uint32_t now) {
   uint8_t min_pri = 0xFF;
   int best_idx = -1;
@@ -81,8 +90,8 @@ mesh::Packet* StaticPoolPacketManager::getNextOutbound(uint32_t now) {
   return send_queue.get(now);
 }
 
-int  StaticPoolPacketManager::getOutboundCount() const {
-  return send_queue.count();
+int  StaticPoolPacketManager::getOutboundCount(uint32_t now) const {
+  return send_queue.countBefore(now);
 }
 
 int StaticPoolPacketManager::getFreeCount() const {

src/helpers/StaticPoolPacketManager.h

@@ -13,6 +13,7 @@ public:
   mesh::Packet* get(uint32_t now);
   void add(mesh::Packet* packet, uint8_t priority, uint32_t scheduled_for);
   int count() const { return _num; }
+  int countBefore(uint32_t now) const;
   mesh::Packet* itemAt(int i) const { return _table[i]; }
   mesh::Packet* removeByIdx(int i);
 };
@@ -27,7 +28,7 @@ public:
   void free(mesh::Packet* packet) override;
   void queueOutbound(mesh::Packet* packet, uint8_t priority, uint32_t scheduled_for) override;
   mesh::Packet* getNextOutbound(uint32_t now) override;
-  int getOutboundCount() const override;
+  int getOutboundCount(uint32_t now) const override;
   int getFreeCount() const override;
   mesh::Packet* getOutboundByIdx(int i) override;
   mesh::Packet* removeOutboundByIdx(int i) override;

src/helpers/esp32/ESPNOWRadio.cpp

@@ -0,0 +1,113 @@
+#include "ESPNOWRadio.h"
+#include <esp_now.h>
+#include <WiFi.h>
+#include <esp_wifi.h>
+
+static uint8_t broadcastAddress[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
+static esp_now_peer_info_t peerInfo;
+static volatile bool is_send_complete = false;
+static esp_err_t last_send_result;
+static uint8_t rx_buf[256];
+static uint8_t last_rx_len = 0;
+
+// callback when data is sent
+static void OnDataSent(const uint8_t *mac_addr, esp_now_send_status_t status) {
+  is_send_complete = true;
+  ESPNOW_DEBUG_PRINTLN("Send Status: %d", (int)status);
+}
+
+static void OnDataRecv(const uint8_t *mac, const uint8_t *data, int len) {
+  ESPNOW_DEBUG_PRINTLN("Recv: len = %d", len);
+  memcpy(rx_buf, data, len);
+  last_rx_len = len;
+}
+
+void ESPNOWRadio::init() {
+  // Set device as a Wi-Fi Station
+  WiFi.mode(WIFI_STA);
+  // Long Range mode
+  esp_wifi_set_protocol(WIFI_IF_STA, WIFI_PROTOCOL_LR);
+
+  // Init ESP-NOW
+  if (esp_now_init() != ESP_OK) {
+    ESPNOW_DEBUG_PRINTLN("Error initializing ESP-NOW");
+    return;
+  }
+
+  esp_wifi_set_max_tx_power(80);  // should be 20dBm
+
+  esp_now_register_send_cb(OnDataSent);
+  esp_now_register_recv_cb(OnDataRecv);
+
+  // Register peer
+  memcpy(peerInfo.peer_addr, broadcastAddress, 6);
+  peerInfo.channel = 0;
+  peerInfo.encrypt = false;
+
+  is_send_complete = true;
+
+  // Add peer        
+  if (esp_now_add_peer(&peerInfo) == ESP_OK) {
+    ESPNOW_DEBUG_PRINTLN("init success");
+  } else {
+   // ESPNOW_DEBUG_PRINTLN("Failed to add peer");
+  }
+}
+
+void ESPNOWRadio::setTxPower(uint8_t dbm) {
+  esp_wifi_set_max_tx_power(dbm * 4);
+}
+
+uint32_t ESPNOWRadio::intID() {
+  uint8_t mac[8];
+  memset(mac, 0, sizeof(mac));
+  esp_efuse_mac_get_default(mac);
+  uint32_t n, m;
+  memcpy(&n, &mac[0], 4);
+  memcpy(&m, &mac[4], 4);
+  
+  return n + m;
+}
+
+bool ESPNOWRadio::startSendRaw(const uint8_t* bytes, int len) {
+  // Send message via ESP-NOW
+  is_send_complete = false;
+  esp_err_t result = esp_now_send(broadcastAddress, bytes, len);
+  if (result == ESP_OK) {
+    n_sent++;
+    ESPNOW_DEBUG_PRINTLN("Send success");
+    return true;
+  }
+  last_send_result = result;
+  is_send_complete = true;
+  ESPNOW_DEBUG_PRINTLN("Send failed: %d", result);
+  return false;
+}
+
+bool ESPNOWRadio::isSendComplete() {
+  return is_send_complete;
+}
+void ESPNOWRadio::onSendFinished() {
+  is_send_complete = true;
+}
+
+bool ESPNOWRadio::isInRecvMode() const {
+  return is_send_complete;    // if NO send in progress, then we're in Rx mode
+}
+
+float ESPNOWRadio::getLastRSSI() const { return 0; }
+float ESPNOWRadio::getLastSNR() const { return 0; }
+
+int ESPNOWRadio::recvRaw(uint8_t* bytes, int sz) {
+  int len = last_rx_len;
+  if (last_rx_len > 0) {
+    memcpy(bytes, rx_buf, last_rx_len);
+    last_rx_len = 0;
+    n_recv++;
+  }
+  return len;
+}
+
+uint32_t ESPNOWRadio::getEstAirtimeFor(int len_bytes) {
+  return 4;  // Fast AF
+}

src/helpers/esp32/ESPNOWRadio.h

@@ -0,0 +1,39 @@
+#pragma once
+
+#include <Mesh.h>
+
+class ESPNOWRadio : public mesh::Radio {
+protected:
+  uint32_t n_recv, n_sent;
+
+public:
+  ESPNOWRadio() { n_recv = n_sent = 0; }
+
+  void init();
+  int recvRaw(uint8_t* bytes, int sz) override;
+  uint32_t getEstAirtimeFor(int len_bytes) override;
+  bool startSendRaw(const uint8_t* bytes, int len) override;
+  bool isSendComplete() override;
+  void onSendFinished() override;
+  bool isInRecvMode() const override;
+
+  uint32_t getPacketsRecv() const { return n_recv; }
+  uint32_t getPacketsSent() const { return n_sent; }
+  void resetStats() { n_recv = n_sent = 0; }
+
+  virtual float getLastRSSI() const override;
+  virtual float getLastSNR() const override;
+
+  float packetScore(float snr, int packet_len) override { return 0; }
+  uint32_t intID();
+  void setTxPower(uint8_t dbm);
+};
+
+#if ESPNOW_DEBUG_LOGGING && ARDUINO
+  #include <Arduino.h>
+  #define ESPNOW_DEBUG_PRINT(F, ...) Serial.printf("ESP-Now: " F, ##__VA_ARGS__)
+  #define ESPNOW_DEBUG_PRINTLN(F, ...) Serial.printf("ESP-Now: " F "\n", ##__VA_ARGS__)
+#else
+  #define ESPNOW_DEBUG_PRINT(...) {}
+  #define ESPNOW_DEBUG_PRINTLN(...) {}
+#endif

src/helpers/esp32/SerialBLEInterface.cpp

@@ -169,7 +169,7 @@ size_t SerialBLEInterface::writeFrame(const uint8_t src[], size_t len) {
   return 0;
 }
 
-#define  BLE_WRITE_MIN_INTERVAL   20
+#define  BLE_WRITE_MIN_INTERVAL   60
 
 bool SerialBLEInterface::isWriteBusy() const {
   return millis() < _last_write + BLE_WRITE_MIN_INTERVAL;   // still too soon to start another write?

src/helpers/esp32/TBeamBoard.cpp

@@ -0,0 +1,350 @@
+#if defined(TBEAM_SUPREME_SX1262) || defined(TBEAM_SX1262) || defined(TBEAM_SX1276)
+
+#include <Arduino.h>
+#include "TBeamBoard.h"
+//#include <RadioLib.h>
+
+uint32_t deviceOnline = 0x00;
+
+bool pmuInterrupt;
+static void setPmuFlag()
+{
+  pmuInterrupt = true;
+}
+
+void TBeamBoard::begin() {
+    
+    ESP32Board::begin();
+
+    power_init();
+
+    //Configure user button
+    pinMode(PIN_USER_BTN, INPUT);
+
+    #ifndef TBEAM_SUPREME_SX1262
+      digitalWrite(P_LORA_TX_LED, HIGH); //inverted pin for SX1276 - HIGH for off
+    #endif
+
+    //radiotype_detect();
+
+    esp_reset_reason_t reason = esp_reset_reason();
+    if (reason == ESP_RST_DEEPSLEEP) {
+      long wakeup_source = esp_sleep_get_ext1_wakeup_status();
+      if (wakeup_source & (1 << P_LORA_DIO_1)) {  // received a LoRa packet (while in deep sleep)
+        startup_reason = BD_STARTUP_RX_PACKET;
+      }
+
+      rtc_gpio_hold_dis((gpio_num_t)P_LORA_NSS);
+      rtc_gpio_deinit((gpio_num_t)P_LORA_DIO_1);
+    }
+}
+
+#ifdef MESH_DEBUG
+void TBeamBoard::scanDevices(TwoWire *w)
+{
+    uint8_t err, addr;
+    int nDevices = 0;
+    uint32_t start = 0;
+
+    Serial.println("Scanning I2C for Devices");
+    for (addr = 1; addr < 127; addr++) {
+        start = millis();
+        w->beginTransmission(addr); delay(2);
+        err = w->endTransmission();
+        if (err == 0) {
+            nDevices++;
+            switch (addr) {
+            case 0x77:
+            case 0x76:
+                Serial.println("\tFound BME280 Sensor");
+                deviceOnline |= BME280_ONLINE;
+                break;
+            case 0x34:
+                Serial.println("\tFound AXP192/AXP2101 PMU");
+                deviceOnline |= POWERMANAGE_ONLINE;
+                break;
+            case 0x3C:
+                Serial.println("\tFound SSD1306/SH1106 display");
+                deviceOnline |= DISPLAY_ONLINE;
+                break;
+            case 0x51:
+                Serial.println("\tFound PCF8563 RTC");
+                deviceOnline |= PCF8563_ONLINE;
+                break;
+            case 0x1C:
+                Serial.println("\tFound QMC6310 MAG Sensor");
+                deviceOnline |= QMC6310_ONLINE;
+                break;
+            default:
+                Serial.print("\tI2C device found at address 0x");
+                if (addr < 16) {
+                    Serial.print("0");
+                }
+                Serial.print(addr, HEX);
+                Serial.println(" !");
+                break;
+            }
+
+        } else if (err == 4) {
+            Serial.print("Unknow error at address 0x");
+            if (addr < 16) {
+                Serial.print("0");
+            }
+            Serial.println(addr, HEX);
+        }
+    }
+    if (nDevices == 0)
+        Serial.println("No I2C devices found\n");
+
+    Serial.println("Scan for devices is complete.");
+    Serial.println("\n");
+
+    Serial.printf("GPS RX pin: %d", PIN_GPS_RX);
+    Serial.printf(" GPS TX pin: %d", PIN_GPS_TX);
+    Serial.println();
+}
+void TBeamBoard::printPMU()
+{
+    Serial.print("isCharging:"); Serial.println(PMU->isCharging() ? "YES" : "NO");
+    Serial.print("isDischarge:"); Serial.println(PMU->isDischarge() ? "YES" : "NO");
+    Serial.print("isVbusIn:"); Serial.println(PMU->isVbusIn() ? "YES" : "NO");
+    Serial.print("getBattVoltage:"); Serial.print(PMU->getBattVoltage()); Serial.println("mV");
+    Serial.print("getVbusVoltage:"); Serial.print(PMU->getVbusVoltage()); Serial.println("mV");
+    Serial.print("getSystemVoltage:"); Serial.print(PMU->getSystemVoltage()); Serial.println("mV");
+
+    // The battery percentage may be inaccurate at first use, the PMU will automatically
+    // learn the battery curve and will automatically calibrate the battery percentage
+    // after a charge and discharge cycle
+    if (PMU->isBatteryConnect()) {
+        Serial.print("getBatteryPercent:"); Serial.print(PMU->getBatteryPercent()); Serial.println("%");
+    }
+
+    Serial.println();
+}
+#endif
+
+bool TBeamBoard::power_init()
+{
+  if (!PMU) {
+    #ifdef TBEAM_SUPREME_SX1262
+      PMU = new XPowersAXP2101(PMU_WIRE_PORT, PIN_BOARD_SDA1, PIN_BOARD_SCL1, I2C_PMU_ADD);
+    #else
+      PMU = new XPowersAXP2101(PMU_WIRE_PORT, PIN_BOARD_SDA, PIN_BOARD_SCL, I2C_PMU_ADD);
+    #endif
+    if (!PMU->init()) {
+        MESH_DEBUG_PRINTLN("Warning: Failed to find AXP2101 power management");
+        delete PMU;
+        PMU = NULL;
+    } else {
+        MESH_DEBUG_PRINTLN("AXP2101 PMU init succeeded, using AXP2101 PMU");
+    }
+  }
+  if (!PMU) {
+    PMU = new XPowersAXP192(PMU_WIRE_PORT, PIN_BOARD_SDA, PIN_BOARD_SCL, I2C_PMU_ADD);
+     if (!PMU->init()) {
+        MESH_DEBUG_PRINTLN("Warning: Failed to find AXP192 power management");
+        delete PMU;
+        PMU = NULL;
+    } else {
+        MESH_DEBUG_PRINTLN("AXP192 PMU init succeeded, using AXP192 PMU");
+    }
+  }
+
+  if (!PMU) {
+    return false;
+  }
+
+  deviceOnline |= POWERMANAGE_ONLINE;
+
+  PMU->setChargingLedMode(XPOWERS_CHG_LED_CTRL_CHG);
+
+  // Set up PMU interrupts
+  pinMode(PIN_PMU_IRQ, INPUT_PULLUP);
+  attachInterrupt(PIN_PMU_IRQ, setPmuFlag, FALLING);
+
+  if (PMU->getChipModel() == XPOWERS_AXP192) {
+
+    PMU->setPowerChannelVoltage(XPOWERS_LDO2, 3300);  //Set up LoRa power rail
+    PMU->enablePowerOutput(XPOWERS_LDO2);             //Enable the LoRa power rail
+
+    PMU->setPowerChannelVoltage(XPOWERS_DCDC1, 3300); //Set up OLED power rail
+    PMU->enablePowerOutput(XPOWERS_DCDC1);            //Enable the OLED power rail
+
+    PMU->setPowerChannelVoltage(XPOWERS_LDO3, 3300);  //Set up GPS power rail
+    PMU->enablePowerOutput(XPOWERS_LDO3);             //Enable the GPS power rail
+
+    PMU->setProtectedChannel(XPOWERS_DCDC1);          //Protect the OLED power rail
+    PMU->setProtectedChannel(XPOWERS_DCDC3);          //Protect the ESP32 power rail
+
+    PMU->disablePowerOutput(XPOWERS_DCDC2);           //Disable unsused power rail DC2
+
+    PMU->disableIRQ(XPOWERS_AXP192_ALL_IRQ);          //Disable PMU IRQ
+
+    PMU->setChargerConstantCurr(XPOWERS_AXP192_CHG_CUR_450MA);  //Set battery charging current
+    PMU->setChargeTargetVoltage(XPOWERS_AXP192_CHG_VOL_4V2);    //Set battery charge-stop voltage
+  }
+  else if(PMU->getChipModel() == XPOWERS_AXP2101){
+    #ifdef TBEAM_SUPREME_SX1262
+      //Set up the GPS power rail
+      PMU->setPowerChannelVoltage(XPOWERS_ALDO4, 3300);
+      PMU->enablePowerOutput(XPOWERS_ALDO4);
+
+      //Set up the LoRa power rail
+      PMU->setPowerChannelVoltage(XPOWERS_ALDO3, 3300);
+      PMU->enablePowerOutput(XPOWERS_ALDO3);
+
+      //Set up power rail for the M.2 interface
+      PMU->setPowerChannelVoltage(XPOWERS_DCDC3, 3300);
+      PMU->enablePowerOutput(XPOWERS_DCDC3);
+
+      if (ESP_SLEEP_WAKEUP_UNDEFINED == esp_sleep_get_wakeup_cause()) {
+        MESH_DEBUG_PRINTLN("Power off and restart ALDO BLDO..");
+        PMU->disablePowerOutput(XPOWERS_ALDO1);
+        PMU->disablePowerOutput(XPOWERS_ALDO2);
+        PMU->disablePowerOutput(XPOWERS_BLDO1);
+        delay(250);
+      }
+
+      //Set up power rail for QMC6310U
+      PMU->setPowerChannelVoltage(XPOWERS_ALDO2, 3300);
+      PMU->enablePowerOutput(XPOWERS_ALDO2);
+
+      //Set up power rail for BME280 and OLED
+      PMU->setPowerChannelVoltage(XPOWERS_ALDO1, 3300);
+      PMU->enablePowerOutput(XPOWERS_ALDO1);
+
+      //Set up pwer rail for SD Card
+      PMU->setPowerChannelVoltage(XPOWERS_BLDO1, 3300);
+      PMU->enablePowerOutput(XPOWERS_BLDO1);
+
+      //Set up power rail BLDO2 to headers
+      PMU->setPowerChannelVoltage(XPOWERS_BLDO2, 3300);
+      PMU->enablePowerOutput(XPOWERS_BLDO2);
+
+      //Set up power rail DCDC4 to headers
+      PMU->setPowerChannelVoltage(XPOWERS_DCDC4, XPOWERS_AXP2101_DCDC4_VOL2_MAX);
+      PMU->enablePowerOutput(XPOWERS_DCDC4);
+
+      //Set up power rail DCDC5 to headers
+      PMU->setPowerChannelVoltage(XPOWERS_DCDC5, 3300);
+      PMU->enablePowerOutput(XPOWERS_DCDC5);
+
+      //Disable unused power rails
+      PMU->disablePowerOutput(XPOWERS_DCDC2);
+      PMU->disablePowerOutput(XPOWERS_DLDO1);
+      PMU->disablePowerOutput(XPOWERS_DLDO2);
+      PMU->disablePowerOutput(XPOWERS_VBACKUP);
+    #else
+      //Turn off unused power rails
+      PMU->disablePowerOutput(XPOWERS_DCDC2);
+      PMU->disablePowerOutput(XPOWERS_DCDC3);
+      PMU->disablePowerOutput(XPOWERS_DCDC4);
+      PMU->disablePowerOutput(XPOWERS_DCDC5);
+      PMU->disablePowerOutput(XPOWERS_ALDO1);
+      PMU->disablePowerOutput(XPOWERS_ALDO4);
+      PMU->disablePowerOutput(XPOWERS_BLDO1);
+      PMU->disablePowerOutput(XPOWERS_BLDO2);
+      PMU->disablePowerOutput(XPOWERS_DLDO1);
+      PMU->disablePowerOutput(XPOWERS_DLDO2);
+      //PMU->disablePowerOutput(XPOWERS_CPULDO);
+
+      PMU->setPowerChannelVoltage(XPOWERS_VBACKUP, 3300);   //Set up GPS RTC power
+      PMU->enablePowerOutput(XPOWERS_VBACKUP);              //Turn on GPS RTC power
+
+      PMU->setPowerChannelVoltage(XPOWERS_ALDO2, 3300);     //Set up LoRa power rail
+      PMU->enablePowerOutput(XPOWERS_ALDO2);                //Enable LoRa power rail
+
+      PMU->setPowerChannelVoltage(XPOWERS_ALDO3, 3300);     //Set up GPS power rail
+      PMU->enablePowerOutput(XPOWERS_ALDO3);                //Enable GPS power rail
+  
+    #endif
+
+    PMU->disableIRQ(XPOWERS_AXP2101_ALL_IRQ);      //Disable all PMU interrupts
+
+    PMU->setChargerConstantCurr(XPOWERS_AXP2101_CHG_CUR_500MA);   //Set battery charging current to 500mA
+    PMU->setChargeTargetVoltage(XPOWERS_AXP2101_CHG_VOL_4V2);     //Set battery charging cutoff voltage to 4.2V
+
+  }
+
+  PMU->clearIrqStatus();        //Clear interrupt flags
+
+  PMU->disableTSPinMeasure();   //Disable TS detection, since it is not used
+
+  //Enable voltage measurements
+  PMU->enableSystemVoltageMeasure();
+  PMU->enableVbusVoltageMeasure();
+  PMU->enableBattVoltageMeasure();
+
+#ifdef MESH_DEBUG
+  scanDevices(&Wire);
+  printPMU();
+#endif
+
+  // Set the power key off press time
+  PMU->setPowerKeyPressOffTime(XPOWERS_POWEROFF_4S);
+  return true;
+}
+
+#pragma region "Debug code"
+// void TBeamBoard::radiotype_detect(){
+
+//   static SPIClass spi;
+//   char  chipTypeInfo;
+
+//   #if defined(P_LORA_SCLK)
+//     spi.begin(P_LORA_SCLK, P_LORA_MISO, P_LORA_MOSI);
+//   #endif
+
+//   for(int i = 0; i<radioVersions; i++){
+//     switch(i){
+//       case 0: 
+//         CustomSX1262 radio = new Module(P_LORA_NSS, P_LORA_DIO_0, P_LORA_RESET, P_LORA_DIO_1, spi);
+//         int status = radio.begin(LORA_FREQ, LORA_BW, LORA_SF, LORA_CR, RADIOLIB_SX126X_SYNC_WORD_PRIVATE, LORA_TX_POWER, 8);
+//         if (status != RADIOLIB_ERR_NONE) {
+//           Serial.print("ERROR: SX1262 not found: ");
+//           Serial.println(status);
+//           //delete radio;
+//           radio = NULL;
+//           break;
+//         }
+//         else{
+//           MESH_DEBUG_PRINTLN("SX1262 detected");
+//           P_LORA_BUSY = 32;
+//           RADIO_CLASS = CustomSX1262;
+//           WRAPPER_CLASS = CustomSX1262Wrapper;
+//           SX126X_RX_BOOSTED_GAIN = true;
+//           SX126X_CURRENT_LIMIT = 140;
+//           //delete radio;
+//           radio = NULL;
+//           break;
+//         }
+//       case 1:
+//         SX1276 radio = new Module(P_LORA_NSS, P_LORA_DIO_0, P_LORA_RESET, P_LORA_DIO_1, spi);
+//         int status1 = radio.begin(LORA_FREQ, LORA_BW, LORA_SF, LORA_CR, RADIOLIB_SX126X_SYNC_WORD_PRIVATE, LORA_TX_POWER, 8);
+//         if (status1 != RADIOLIB_ERR_NONE) {
+//           Serial.print("ERROR: SX1272 not found: ");
+//           Serial.println(status1);
+//           //delete radio;
+//           radio = NULL;
+//         }
+//         else{
+//           MESH_DEBUG_PRINTLN("SX1272 detected");
+//           P_LORA_BUSY = RADIOLIB_NC;
+//           P_LORA_DIO_2 = 32;
+//           RADIO_CLASS = CustomSX1272;
+//           WRAPPER_CLASS = CustomSX1272Wrapper;
+//           SX127X_CURRENT_LIMIT = 120;
+//           //delete radio;
+//           radio = NULL;
+//           return;
+//         }
+//         default:
+//     }
+//   }
+
+
+  
+// }
+#pragma endregion
+
+#endif

src/helpers/esp32/TBeamBoard.h

@@ -0,0 +1,168 @@
+#pragma once
+
+#if defined(TBEAM_SUPREME_SX1262) || defined(TBEAM_SX1262) || defined(TBEAM_SX1276)
+
+#include <Wire.h>
+#include <Arduino.h>
+#include "XPowersLib.h"
+#include "helpers/ESP32Board.h"
+#include <driver/rtc_io.h>
+//#include <RadioLib.h>
+//#include <helpers/RadioLibWrappers.h>
+//#include <helpers/CustomSX1262Wrapper.h>
+//#include <helpers/CustomSX1276Wrapper.h>
+
+#ifdef TBEAM_SUPREME_SX1262
+  // LoRa radio module pins for TBeam S3 Supreme SX1262
+  #define  P_LORA_DIO_0   -1   //NC
+  #define  P_LORA_DIO_1    1   //SX1262 IRQ pin
+  #define  P_LORA_NSS      10  //SX1262 SS pin
+  #define  P_LORA_RESET    5   //SX1262 Rest pin
+  #define  P_LORA_BUSY     4   //SX1262 Busy pin
+  #define  P_LORA_SCLK     12   //SX1262 SCLK pin
+  #define  P_LORA_MISO     13   //SX1262 MISO pin
+  #define  P_LORA_MOSI     11   //SX1262 MOSI pin
+
+  #define PIN_BOARD_SDA1  42  //SDA for PMU and PFC8563 (RTC)
+  #define PIN_BOARD_SCL1  41  //SCL for PMU and PFC8563 (RTC)
+
+  #define PIN_PMU_IRQ  40     //IRQ pin for PMU
+
+  // #define PIN_GPS_RX      9
+  // #define PIN_GPS_TX      8
+  // #define PIN_GPS_EN      7
+
+  #define P_BOARD_SPI_MOSI  35  //SPI for SD Card and QMI8653 (IMU)
+  #define P_BOARD_SPI_MISO  37  //SPI for SD Card and QMI8653 (IMU)
+  #define P_BOARD_SPI_SCK   36  //SPI for SD Card and QMI8653 (IMU)
+  #define P_BPARD_SPI_CS    47  //Pin for SD Card CS
+  #define P_BOARD_IMU_CS    34  //Pin for QMI8653 (IMU) CS
+
+  #define P_BOARD_IMU_INT  33  //IMU Int pin
+  #define P_BOARD_RTC_INT  14  //RTC Int pin
+
+  //I2C Wire addresses
+  #define I2C_BME280_ADD     0x76  //BME280 sensor I2C address on Wire
+  #define I2C_OLED_ADD       0x3C  //SH1106 OLED I2C address on Wire
+  #define I2C_QMC6310U_ADD   0x1C  //QMC6310U mag sensor I2C address on Wire
+
+  //I2C Wire1 addresses
+  #define I2C_RTC_ADD  0x51  //RTC I2C address on Wire1
+  #define I2C_PMU_ADD  0x34  //AXP2101 I2C address on Wire1
+  
+  #define PMU_WIRE_PORT  Wire1
+  #define RTC_WIRE_PORT  Wire1
+#endif
+
+#ifdef TBEAM_SX1262
+  #define  P_LORA_BUSY    32
+#endif
+
+#ifdef TBEAM_SX1276
+  #define  P_LORA_DIO_2    32
+  #define  P_LORA_BUSY    RADIOLIB_NC
+#endif
+
+#if defined(TBEAM_SX1262) || defined(TBEAM_SX1276)
+  // LoRa radio module pins for TBeam
+  // uint32_t  P_LORA_BUSY  = 0;   //shared, so define at run
+  // uint32_t  P_LORA_DIO_2 = 0;   //SX1276 only, so define at run
+
+  #define  P_LORA_DIO_0  26
+  #define  P_LORA_DIO_1  33
+  #define  P_LORA_NSS    18
+  #define  P_LORA_RESET  23
+  #define  P_LORA_SCLK    5
+  #define  P_LORA_MISO   19
+  #define  P_LORA_MOSI   27
+
+  // #define PIN_GPS_RX      34
+  // #define PIN_GPS_TX      12
+
+  #define PIN_PMU_IRQ   35
+  #define PMU_WIRE_PORT  Wire
+  #define RTC_WIRE_PORT  Wire
+  #define I2C_PMU_ADD    0x34
+#endif
+
+// enum RadioType {
+//   SX1262, 
+//   SX1276
+// };
+
+class TBeamBoard : public ESP32Board {
+XPowersLibInterface *PMU = NULL;
+//PhysicalLayer * pl;
+//RadioType * radio = NULL;
+// int radioVersions = 2;
+
+enum {
+  POWERMANAGE_ONLINE  = _BV(0),
+  DISPLAY_ONLINE      = _BV(1),
+  RADIO_ONLINE        = _BV(2),
+  GPS_ONLINE          = _BV(3),
+  PSRAM_ONLINE        = _BV(4),
+  SDCARD_ONLINE       = _BV(5),
+  AXDL345_ONLINE      = _BV(6),
+  BME280_ONLINE       = _BV(7),
+  BMP280_ONLINE       = _BV(8),
+  BME680_ONLINE       = _BV(9),
+  QMC6310_ONLINE      = _BV(10),
+  QMI8658_ONLINE      = _BV(11),
+  PCF8563_ONLINE      = _BV(12),
+  OSC32768_ONLINE      = _BV(13),
+};
+
+bool power_init();
+//void radiotype_detect();
+
+public:
+
+#ifdef MESH_DEBUG
+  void printPMU();
+  void scanDevices(TwoWire *w);
+#endif
+  void begin();
+
+  #ifndef TBEAM_SUPREME_SX1262
+  void onBeforeTransmit() override{
+    digitalWrite(P_LORA_TX_LED, LOW);   // turn TX LED on - invert pin for SX1276
+  }
+  void onAfterTransmit() override{
+    digitalWrite(P_LORA_TX_LED, HIGH);   // turn TX LED off - invert pin for SX1276
+  }
+  #endif
+
+  void enterDeepSleep(uint32_t secs, int pin_wake_btn) {
+  esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_ON);
+
+  // Make sure the DIO1 and NSS GPIOs are hold on required levels during deep sleep
+  rtc_gpio_set_direction((gpio_num_t)P_LORA_DIO_1, RTC_GPIO_MODE_INPUT_ONLY);
+  rtc_gpio_pulldown_en((gpio_num_t)P_LORA_DIO_1);
+
+  rtc_gpio_hold_en((gpio_num_t)P_LORA_NSS);
+
+  if (pin_wake_btn < 0) {
+    esp_sleep_enable_ext1_wakeup( (1L << P_LORA_DIO_1), ESP_EXT1_WAKEUP_ANY_HIGH);  // wake up on: recv LoRa packet
+  } else {
+    esp_sleep_enable_ext1_wakeup( (1L << P_LORA_DIO_1) | (1L << pin_wake_btn), ESP_EXT1_WAKEUP_ANY_HIGH);  // wake up on: recv LoRa packet OR wake btn
+  }
+
+  if (secs > 0) {
+    esp_sleep_enable_timer_wakeup(secs * 1000000);
+  }
+
+  // Finally set ESP32 into sleep
+  esp_deep_sleep_start();   // CPU halts here and never returns!
+}
+
+  uint16_t getBattMilliVolts(){
+    return PMU->getBattVoltage();
+  }
+
+  const char* getManufacturerName() const{
+    return "LilyGo T-Beam";
+  }
+};
+
+#endif