Merge branch 'dev'

SenseCap Solar compilation fix: bad linker directory; added companion ble and usb roles

README.md

@@ -74,17 +74,7 @@ They can also be managed via LoRa in the mobile app by using the Remote Manageme
 
 ## 🛠 Hardware Compatibility
 
-MeshCore is designed for use with:
-* Heltec V3 LoRa Boards
-* RAK4631
-* XiaoS3 WIO (sx1262 combo)
-* XiaoC3 (plus external sx126x module)
-* LilyGo T3S3
-* Heltec T114
-* Station G2
-* Sensecap T1000e
-* Heltec V2
-* LilyGo TLora32 v1.6
+MeshCore is designed for devices listed in the [MeshCore Flasher](https://flasher.meshcore.co.uk)
 
 ## 📜 License
 
@@ -104,7 +94,7 @@ Here are some general principals you should try to adhere to:
 
 - 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.
+- Join [MeshCore Discord](https://discord.gg/BMwCtwHj5V) to chat with the developers and get help from the community.
 
 ## RAK Wireless Board Support in PlatformIO
 

boards/minewsemi_me25ls01.json

@@ -0,0 +1,59 @@
+{
+  "build": {
+    "arduino": {
+      "ldscript": "nrf52840_s140_v7.ld"
+    },
+    "core": "nRF5",
+    "cpu": "cortex-m4",
+    "extra_flags": "-DARDUINO_WIO_WM1110 -DNRF52840_XXAA",
+    "f_cpu": "64000000L",
+    "hwids": [
+      ["0x239A", "0x8029"],
+      ["0x239A", "0x0029"],
+      ["0x239A", "0x002A"],
+      ["0x239A", "0x802A"]
+    ],
+    "usb_product": "me25ls01-BOOT",
+    "mcu": "nrf52840",
+    "variant": "minewsemi_me25ls01",
+    "bsp": {
+      "name": "adafruit"
+    },
+    "softdevice": {
+      "sd_flags": "-DS140",
+      "sd_name": "s140",
+      "sd_version": "7.3.0",
+      "sd_fwid": "0x0123"
+    },
+    "bootloader": {
+      "settings_addr": "0xFF000"
+    }
+  },
+  "connectivity": ["bluetooth"],
+  "debug": {
+    "jlink_device": "nRF52840_xxAA",
+    "svd_path": "nrf52840.svd",
+    "openocd_target": "nrf52.cfg"
+  },
+  "frameworks": ["arduino"],
+  "name": "Minewsemi ME25LS01",
+  "upload": {
+    "maximum_ram_size": 248832,
+    "maximum_size": 815104,
+    "speed": 115200,
+    "protocol": "nrfutil",
+    "protocols": [
+      "jlink",
+      "nrfjprog",
+      "nrfutil",
+      "stlink",
+      "cmsis-dap",
+      "blackmagic"
+    ],
+    "use_1200bps_touch": true,
+    "require_upload_port": true,
+    "wait_for_upload_port": true
+  },
+  "url": "https://en.minewsemi.com/lora-module/lr1110-nrf52840-me25LS01",
+  "vendor": "MINEWSEMI"
+}

boards/seeed-wio-tracker-l1.json

@@ -0,0 +1,61 @@
+{
+  "build": {
+    "arduino": {
+    "ldscript": "nrf52840_s140_v7.ld"
+    },
+    "core": "nRF5",
+    "cpu": "cortex-m4",
+    "extra_flags": "-DARDUINO_SEEED_WIO_TRACKER_L1 -DNRF52840_XXAA -DSEEED_WIO_TRACKER_L1 ",
+    "f_cpu": "64000000L",
+    "hwids": [
+      [ "0x2886", "0x1667" ],
+      [ "0x2886", "0x1668" ]
+    ],
+    "mcu": "nrf52840",
+    "variant": "Seeed_Wio_Tracker_L1",
+    "softdevice": {
+      "sd_flags": "-DS140",
+      "sd_name": "s140",
+      "sd_version": "7.3.0",
+      "sd_fwid": "0x0123"
+    },
+    "bsp": {
+      "name": "adafruit"
+    },
+    "bootloader": {
+      "settings_addr": "0xFF000"
+    },
+    "usb_product": "Seeed Wio Tracker L1"
+  },
+  "connectivity": [
+    "bluetooth"
+  ],
+  "debug": {
+    "jlink_device": "nRF52840_xxAA",
+    "openocd_target": "nrf52.cfg",
+    "svd_path": "nrf52840.svd"
+  },
+  "frameworks": [
+    "arduino"
+  ],
+  "name": "Seeed Wio Tracker L1",
+  "upload": {
+    "maximum_ram_size": 248832,
+    "maximum_size": 815104,
+    "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/wio_tracker_l1_node/",
+  "vendor": "Seeed Studio"
+}

boards/seeed_sensecap_solar.json

@@ -0,0 +1,60 @@
+{
+  "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", "0x0059" ]
+    ],
+    "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": 248832,
+    "maximum_size": 815104,
+    "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/meshtastic_solar_node/",
+  "vendor": "Seeed Studio"
+}

docs/faq.md

@@ -31,13 +31,14 @@ author: https://github.com/LitBomb<!-- omit from toc -->
   - [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: How do I get maps on T-Deck?](#45-q-how-do-i-get-maps-on-t-deck)
-  - [4.6. Q: Where do the map tiles go?](#46-q-where-do-the-map-tiles-go)
-  - [4.7. Q: How to unlock deeper map zoom and server management features on T-Deck?](#47-q-how-to-unlock-deeper-map-zoom-and-server-management-features-on-t-deck)
-  - [4.8. Q: How to decipher the diagnostics screen on T-Deck?](#48-q-how-to-decipher-the-diagnostics-screen-on-t-deck)
-  - [4.9. Q: The T-Deck sound is too loud?](#49-q-the-t-deck-sound-is-too-loud)
-  - [4.10. Q: Can you customize the sound?](#410-q-can-you-customize-the-sound)
-  - [4.11. 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?](#411-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)
+  - [4.5. 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)
@@ -65,18 +66,20 @@ author: https://github.com/LitBomb<!-- omit from toc -->
   - [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)
-
+  - [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)
 
 ## 1. Introduction
 
 ### 1.1. Q: What is MeshCore?
 
-**A:** MeshCore is free and open source
+**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
@@ -176,7 +179,7 @@ The T-Deck firmware is free to download and most features are available without
 
 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))
+[Source](https://discord.com/channels/826570251612323860/1330643963501351004/1356540643853209641)
 
 the rest of the radio settings are the same for all frequencies:  
 - Spread Factor (SF): 11  
@@ -268,7 +271,7 @@ You can get the latitude and longitude from Google Maps by right-clicking the lo
 
 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))
+[Source](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.
@@ -276,7 +279,18 @@ GPS on T-Deck is always enabled.  You can skip the "GPS clock sync" and the T-De
 ### 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**.
 
-### 4.5. 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)
@@ -290,14 +304,14 @@ 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>
 
-### 4.6. 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.
 
-### 4.7. 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>
 
-### 4.8. Q: How to decipher the diagnostics screen on T-Deck?
+### 4.9. Q: How to decipher the diagnostics screen on T-Deck?
 
 **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}`
@@ -316,12 +330,12 @@ See here for packet-type: [https://github.com/ripplebiz/MeshCore/blob/main/src/P
 
 [Source](https://discord.com/channels/1343693475589263471/1343693475589263474/1350611321040932966)
 
-### 4.9. Q: The T-Deck sound is too loud?
-### 4.10. Q: Can you customize the sound?
+### 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`
 
-### 4.11. 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://...")
 
@@ -382,7 +396,7 @@ The third character is the capital letter 'O', not zero `0`
 - Firmware repo: <https://github.com/ripplebiz/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>.
+**A:** Provide your honest feedback on GitHub and on [MeshCore Discord server](https://discord.gg/BMwCtwHj5V). 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
 
@@ -450,45 +464,65 @@ This could change in the future if MeshCore develops a client firmware that repe
 
 ### 5.13. Q: Can I use a Raspberry Pi to update a MeshCore radio?
 ** A:** Yes.
-You will need to install picocom on the pi.
-`sudo apt install picocom`
+Below are the instructions to flash firmware onto a supported LoRa device using a Raspberry Pi over USB serial.
 
-Then run the following commands to setup the repeater.
-```
-picocom -b 115200 /dev/ttyUSB0 --imap lfcrlf
-set name your_repeater_name
-time epoch_time
-password your_unique_password
-set advert.interval 240
-advert
-```
-Note: If using a RAK the path will most likely be /dev/ttyACM0
+> Instructions for nRF devices like RAK, T1000-E, T114 are immediately after the ESP instructions
 
-Epoch time comes from https://www.epochconverter.com/
+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`
+	
 
-You can also flash the repeater using esptool.  You will need to install esptool with the following command...
 
-`pip install esptool --break-system-packages`
+**Instructions for nRF devices:**
 
-Then to flash the firmware to Heltec, obtain the .bin file from https://flasher.meshcore.co.uk/ (download all firmware link)
+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`
 
-For Heltec:
-`esptool.py -p /dev/ttyUSB0 --chip esp32-s3 write_flash 0x00000 firmware.bin`
+To start managing your USB serial-connected device using picocom, use the following command:
+    - `picocom -b 115200 /dev/ttyUSB0 --imap lfcrlf`
 
-If flashing a visual studio code build bin file, flash with the following offset:
-`esptool.py -p /dev/ttyUSB0 --chip esp32-s3 write_flash 0x10000 firmware.bin`
+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
 
-For Pi
-Download the zip from the online flasher website and use the following command:
-
-Note: Requires adafruit-nrfutil command which can be installed as follows.
-`pip install adafruit-nrfutil --break-system-packages`
-
-```
-adafruit-nrfutil --verbose dfu serial --package t1000_e_bootloader-0.9.1-5-g488711a_s140_7.3.0.zip -p /dev/ttyACM0 -b 115200 --singlebank --touch 1200
-```
-
-[Source](https://discord.com/channels/826570251612323860/1330643963501351004/1342120825251299388)
   
 ### 5.14. Q: Are there are projects built around MeshCore?
 
@@ -541,9 +575,9 @@ You can get the epoch time on <https://www.epochconverter.com/> and use it to se
 
 **A:** 
 1. Connect USB-C cable to your device, per your device's instruction, get it to flash mode:
-    - For RAK, double click its reset button
-    - For T1000-e, quickly disconnect and reconnect the magnetic side of the cable from the device TWICE
-    - For Heltec T114, click the reset button once (the bottom button)
+    - 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 
@@ -612,7 +646,9 @@ Currently, the following boards are supported:
 - Seeed Studio XIAO nRF52840 BLE SENSE
 - RAK 4631
 
+### 7.4 Q are the MeshCore logo and font available?
 
+**A:** Yes, it is on the MeshCore github repo here: https://github.com/ripplebiz/MeshCore/tree/main/logo
 
 
 ---

docs/packet_structure.md

@@ -1,11 +1,12 @@
 # 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.                        |
+| Field           | Size (bytes)                     | Description                                               |
+|-----------------|----------------------------------|-----------------------------------------------------------|
+| header          | 1                                | Contains routing type, payload type, and payload version. |
+| transport_codes | 4 (optional)                     | 2x 16-bit transport codes (if ROUTE_TYPE_TRANSPORT_*)     |
+| 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.
 
@@ -42,6 +43,7 @@ bit 0 means the lowest bit (1s place)
 | `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.    |
+| `0x0A` | `PAYLOAD_TYPE_MULTIPART`  | packet is part of a sequence of packets.      |
 | `0x0F` | `PAYLOAD_TYPE_RAW_CUSTOM` | Custom packet (raw bytes, custom encryption). |
 
 ## Payload Version Values

docs/payloads.md

@@ -10,13 +10,16 @@ Inside of each [meshcore packet](./packet_structure.md) is a payload, identified
 * Anonymous request.
 * Group text message (unverified).
 * Group datagram (unverified).
+* Multi-part packet
 * Custom packet (raw bytes, custom encryption).
 
-This document defines the structure of each of these payload types
+This document defines the structure of each of these payload types.
+
+NOTE: all 16 and 32-bit integer fields are Little Endian.
 
 ## Important concepts:
 
-* Node/channel hash: the first byte of the node or channel's public key
+* Node hash: the first byte of the node's public key
 
 # Node advertisement
 This kind of payload notifies receivers that a node exists, and gives information about the node
@@ -33,10 +36,10 @@ 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                               |
+| latitude      | 4 (optional)    | decimal latitude multiplied by 1000000, integer       |
+| longitude     | 4 (optional)    | decimal longitude multiplied by 1000000, integer      |
+| feature 1     | 2  (optional)   | reserved for future use                               |
+| feature 2     | 2  (optional)   | reserved for future use                               |
 | name          | rest of appdata | name of the node                                      |
 
 Appdata Flags
@@ -46,6 +49,7 @@ Appdata Flags
 | `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           |
+| `0x04` | is sensor      | advert is for a sensor 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.              |
@@ -92,13 +96,15 @@ Returned path messages provide a description of the route a packet took from the
 
 Request type
 
-| Value  | Name               | Description                           |
-|--------|--------------------|---------------------------------------|
-| `0x01` | get status         | get status of repeater or room server |
-| `0x02` | keepalive          | TODO |
-| `0x03` | get telemetry data | TODO |
+| Value  | Name                 | Description                           |
+|--------|----------------------|---------------------------------------|
+| `0x01` | get stats            | get stats of repeater or room server  |
+| `0x02` | keepalive            | (deprecated) |
+| `0x03` | get telemetry data   | TODO |
+| `0x04` | get min,max,avg data | sensor nodes - get min, max, average for given time span |
+| `0x05` | get access list      | get node's approved access list       |
 
-### Get status
+### Get stats
 
 Gets information about the node, possibly including the following:
 
@@ -121,10 +127,6 @@ Gets information about the node, possibly including the following:
 * Number posted (?)
 * Number of post pushes (?)
 
-### Keepalive
-
-No-op request.
-
 ### Get telemetry data
 
 Request data about sensors on the node, including battery level.
@@ -138,11 +140,11 @@ Request data about sensors on the node, including battery level.
 
 ## 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                          |
+| Field           | Size (bytes)    | Description                                                  |
+|-----------------|-----------------|--------------------------------------------------------------|
+| timestamp       | 4               | send time (unix timestamp)                                   |
+| flags + attempt | 1               | upper six bits are flags (see below), lower two bits are attempt number (0..3) |
+| message         | rest of payload | the message content, see next table                          |
 
 Flags
 
@@ -150,7 +152,7 @@ Flags
 |--------|---------------------------|------------------------------------------------------------|
 | `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 |
+| `0x02` | signed plain text message | first four bytes is sender pubkey prefix, followed by plain text message |
 
 # Anonymous request
 
@@ -166,14 +168,14 @@ 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 |
+| sync timestamp | 4               | NOTE: room server only! - 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 | 
+| channel hash | 1               | first byte of SHA256 of channel's shared key  |
 | cipher MAC   | 2               | MAC for encrypted data in next field       |
 | ciphertext   | rest of payload | encrypted message, see below for details   |
 

examples/companion_radio/DataStore.cpp

@@ -154,7 +154,7 @@ void DataStore::loadPrefsInt(const char *filename, NodePrefs& _prefs, double& no
     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(pad, 1);                                                                     // 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
@@ -163,7 +163,8 @@ void DataStore::loadPrefsInt(const char *filename, NodePrefs& _prefs, double& no
     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.multi_acks, sizeof(_prefs.multi_acks));                   // 77
+    file.read(pad, 2);                                                                     // 78
     file.read((uint8_t *)&_prefs.ble_pin, sizeof(_prefs.ble_pin));                         // 80
 
     file.close();
@@ -184,7 +185,7 @@ void DataStore::savePrefs(const NodePrefs& _prefs, double node_lat, double node_
     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(pad, 1);                                                                     // 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
@@ -193,7 +194,8 @@ void DataStore::savePrefs(const NodePrefs& _prefs, double node_lat, double node_
     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.multi_acks, sizeof(_prefs.multi_acks));                   // 77
+    file.write(pad, 2);                                                                     // 78
     file.write((uint8_t *)&_prefs.ble_pin, sizeof(_prefs.ble_pin));                         // 80
 
     file.close();

examples/companion_radio/MyMesh.cpp

@@ -45,6 +45,10 @@
 #define CMD_GET_CUSTOM_VARS           40
 #define CMD_SET_CUSTOM_VAR            41
 #define CMD_GET_ADVERT_PATH           42
+#define CMD_GET_TUNING_PARAMS         43
+// NOTE: CMD range 44..49 parked, potentially for WiFi operations
+#define CMD_SEND_BINARY_REQ           50
+#define CMD_FACTORY_RESET             51
 
 #define RESP_CODE_OK                  0
 #define RESP_CODE_ERR                 1
@@ -69,6 +73,7 @@
 #define RESP_CODE_SIGNATURE           20
 #define RESP_CODE_CUSTOM_VARS         21
 #define RESP_CODE_ADVERT_PATH         22
+#define RESP_CODE_TUNING_PARAMS       23
 
 #define SEND_TIMEOUT_BASE_MILLIS        500
 #define FLOOD_SEND_TIMEOUT_FACTOR       16.0f
@@ -91,6 +96,7 @@
 #define PUSH_CODE_TRACE_DATA            0x89
 #define PUSH_CODE_NEW_ADVERT            0x8A
 #define PUSH_CODE_TELEMETRY_RESPONSE    0x8B
+#define PUSH_CODE_BINARY_RESPONSE       0x8C
 
 #define ERR_CODE_UNSUPPORTED_CMD        1
 #define ERR_CODE_NOT_FOUND              2
@@ -204,6 +210,10 @@ int MyMesh::calcRxDelay(float score, uint32_t air_time) const {
   return (int)((pow(_prefs.rx_delay_base, 0.85f - score) - 1.0) * air_time);
 }
 
+uint8_t MyMesh::getExtraAckTransmitCount() const {
+  return _prefs.multi_acks;
+}
+
 void MyMesh::logRxRaw(float snr, float rssi, const uint8_t raw[], int len) {
   if (_serial->isConnected() && len + 3 <= MAX_FRAME_SIZE) {
     int i = 0;
@@ -319,13 +329,17 @@ void MyMesh::queueMessage(const ContactInfo &from, uint8_t txt_type, mesh::Packe
     uint8_t frame[1];
     frame[0] = PUSH_CODE_MSG_WAITING; // send push 'tickle'
     _serial->writeFrame(frame, 1);
-  } else {
-#ifdef DISPLAY_CLASS
-    ui_task.soundBuzzer(UIEventType::contactMessage);
-#endif
   }
+
 #ifdef DISPLAY_CLASS
-  ui_task.newMsg(path_len, from.name, text, offline_queue_len);
+  // we only want to show text messages on display, not cli data
+  bool should_display = txt_type == TXT_TYPE_PLAIN || txt_type == TXT_TYPE_SIGNED_PLAIN;
+  if (should_display) {
+    ui_task.newMsg(path_len, from.name, text, offline_queue_len);
+    if (!_serial->isConnected()) {
+      ui_task.soundBuzzer(UIEventType::contactMessage);
+    }
+  }
 #endif
 }
 
@@ -462,6 +476,7 @@ void MyMesh::onContactResponse(const ContactInfo &contact, const uint8_t *data,
       i += 6; // pub_key_prefix
       memcpy(&out_frame[i], &tag, 4);
       i += 4; // NEW: include server timestamp
+      out_frame[i++] = data[7]; // NEW (v7): ACL permissions
     } else {
       out_frame[i++] = PUSH_CODE_LOGIN_FAIL;
       out_frame[i++] = 0; // reserved
@@ -484,7 +499,7 @@ void MyMesh::onContactResponse(const ContactInfo &contact, const uint8_t *data,
     memcpy(&out_frame[i], &data[4], len - 4);
     i += (len - 4);
     _serial->writeFrame(out_frame, i);
-  } else if (len > 4 && tag == pending_telemetry) { // check for telemetry response
+  } else if (len > 4 && tag == pending_telemetry) {  // check for matching response tag
     pending_telemetry = 0;
 
     int i = 0;
@@ -495,6 +510,17 @@ void MyMesh::onContactResponse(const ContactInfo &contact, const uint8_t *data,
     memcpy(&out_frame[i], &data[4], len - 4);
     i += (len - 4);
     _serial->writeFrame(out_frame, i);
+  } else if (len > 4 && tag == pending_req) {  // check for matching response tag
+    pending_req = 0;
+
+    int i = 0;
+    out_frame[i++] = PUSH_CODE_BINARY_RESPONSE;
+    out_frame[i++] = 0; // reserved
+    memcpy(&out_frame[i], &tag, 4);   // app needs to match this to RESP_CODE_SENT.tag
+    i += 4;
+    memcpy(&out_frame[i], &data[4], len - 4);
+    i += (len - 4);
+    _serial->writeFrame(out_frame, i);
   }
 }
 
@@ -560,7 +586,7 @@ MyMesh::MyMesh(mesh::Radio &radio, mesh::RNG &rng, mesh::RTCClock &rtc, SimpleMe
   _cli_rescue = false;
   offline_queue_len = 0;
   app_target_ver = 0;
-  pending_login = pending_status = pending_telemetry = 0;
+  pending_login = pending_status = pending_telemetry = pending_req = 0;
   next_ack_idx = 0;
   sign_data = NULL;
   dirty_contacts_expiry = 0;
@@ -613,10 +639,10 @@ void MyMesh::begin(bool has_display) {
   _prefs.cr = constrain(_prefs.cr, 5, 8);
   _prefs.tx_power_dbm = constrain(_prefs.tx_power_dbm, 1, MAX_LORA_TX_POWER);
 
-#ifdef BLE_PIN_CODE
+#ifdef BLE_PIN_CODE // 123456 by default
   if (_prefs.ble_pin == 0) {
 #ifdef DISPLAY_CLASS
-    if (has_display) {
+    if (has_display && BLE_PIN_CODE == 123456) {
       StdRNG rng;
       _active_ble_pin = rng.nextInt(100000, 999999); // random pin each session
     } else {
@@ -697,7 +723,7 @@ void MyMesh::handleCmdFrame(size_t len) {
     i += 4;
     memcpy(&out_frame[i], &lon, 4);
     i += 4;
-    out_frame[i++] = 0; // reserved
+    out_frame[i++] = _prefs.multi_acks; // new v7+
     out_frame[i++] = _prefs.advert_loc_policy;
     out_frame[i++] = (_prefs.telemetry_mode_env << 4) | (_prefs.telemetry_mode_loc << 2) |
                      (_prefs.telemetry_mode_base); // v5+
@@ -1012,6 +1038,13 @@ void MyMesh::handleCmdFrame(size_t len) {
     _prefs.airtime_factor = ((float)af) / 1000.0f;
     savePrefs();
     writeOKFrame();
+  } else if (cmd_frame[0] == CMD_GET_TUNING_PARAMS) {
+    uint32_t rx = _prefs.rx_delay_base * 1000, af = _prefs.airtime_factor * 1000;
+    int i = 0;
+    out_frame[i++] = RESP_CODE_TUNING_PARAMS;
+    memcpy(&out_frame[i], &rx, 4); i += 4;
+    memcpy(&out_frame[i], &af, 4); i += 4;
+    _serial->writeFrame(out_frame, i);
   } else if (cmd_frame[0] == CMD_SET_OTHER_PARAMS) {
     _prefs.manual_add_contacts = cmd_frame[1];
     if (len >= 3) {
@@ -1021,6 +1054,9 @@ void MyMesh::handleCmdFrame(size_t len) {
 
       if (len >= 4) {
         _prefs.advert_loc_policy = cmd_frame[3];
+        if (len >= 5) {
+          _prefs.multi_acks = cmd_frame[4];
+        }
       }
     }
     savePrefs();
@@ -1090,7 +1126,7 @@ void MyMesh::handleCmdFrame(size_t len) {
       if (result == MSG_SEND_FAILED) {
         writeErrFrame(ERR_CODE_TABLE_FULL);
       } else {
-        pending_telemetry = pending_status = 0;
+        pending_req = pending_telemetry = pending_status = 0;
         memcpy(&pending_login, recipient->id.pub_key, 4); // match this to onContactResponse()
         out_frame[0] = RESP_CODE_SENT;
         out_frame[1] = (result == MSG_SEND_SENT_FLOOD) ? 1 : 0;
@@ -1110,7 +1146,7 @@ void MyMesh::handleCmdFrame(size_t len) {
       if (result == MSG_SEND_FAILED) {
         writeErrFrame(ERR_CODE_TABLE_FULL);
       } else {
-        pending_telemetry = pending_login = 0;
+        pending_req = pending_telemetry = pending_login = 0;
         // FUTURE:  pending_status = tag;  // match this in onContactResponse()
         memcpy(&pending_status, recipient->id.pub_key, 4); // legacy matching scheme
         out_frame[0] = RESP_CODE_SENT;
@@ -1122,7 +1158,7 @@ void MyMesh::handleCmdFrame(size_t len) {
     } else {
       writeErrFrame(ERR_CODE_NOT_FOUND); // contact not found
     }
-  } else if (cmd_frame[0] == CMD_SEND_TELEMETRY_REQ && len >= 4 + PUB_KEY_SIZE) {
+  } else if (cmd_frame[0] == CMD_SEND_TELEMETRY_REQ && len >= 4 + PUB_KEY_SIZE) {  // can deprecate, in favour of CMD_SEND_BINARY_REQ
     uint8_t *pub_key = &cmd_frame[4];
     ContactInfo *recipient = lookupContactByPubKey(pub_key, PUB_KEY_SIZE);
     if (recipient) {
@@ -1131,7 +1167,7 @@ void MyMesh::handleCmdFrame(size_t len) {
       if (result == MSG_SEND_FAILED) {
         writeErrFrame(ERR_CODE_TABLE_FULL);
       } else {
-        pending_status = pending_login = 0;
+        pending_status = pending_login = pending_req = 0;
         pending_telemetry = tag; // match this in onContactResponse()
         out_frame[0] = RESP_CODE_SENT;
         out_frame[1] = (result == MSG_SEND_SENT_FLOOD) ? 1 : 0;
@@ -1157,6 +1193,27 @@ void MyMesh::handleCmdFrame(size_t len) {
     memcpy(&out_frame[i], telemetry.getBuffer(), tlen);
     i += tlen;
     _serial->writeFrame(out_frame, i);
+  } else if (cmd_frame[0] == CMD_SEND_BINARY_REQ && len >= 2 + PUB_KEY_SIZE) {
+    uint8_t *pub_key = &cmd_frame[1];
+    ContactInfo *recipient = lookupContactByPubKey(pub_key, PUB_KEY_SIZE);
+    if (recipient) {
+      uint8_t *req_data = &cmd_frame[1 + PUB_KEY_SIZE];
+      uint32_t tag, est_timeout;
+      int result = sendRequest(*recipient, req_data, len - (1 + PUB_KEY_SIZE), tag, est_timeout);
+      if (result == MSG_SEND_FAILED) {
+        writeErrFrame(ERR_CODE_TABLE_FULL);
+      } else {
+        pending_status = pending_login = pending_telemetry = 0;
+        pending_req = tag; // match this in onContactResponse()
+        out_frame[0] = RESP_CODE_SENT;
+        out_frame[1] = (result == MSG_SEND_SENT_FLOOD) ? 1 : 0;
+        memcpy(&out_frame[2], &tag, 4);
+        memcpy(&out_frame[6], &est_timeout, 4);
+        _serial->writeFrame(out_frame, 10);
+      }
+    } else {
+      writeErrFrame(ERR_CODE_NOT_FOUND); // contact not found
+    }
   } else if (cmd_frame[0] == CMD_HAS_CONNECTION && len >= 1 + PUB_KEY_SIZE) {
     uint8_t *pub_key = &cmd_frame[1];
     if (hasConnectionTo(pub_key)) {
@@ -1312,6 +1369,15 @@ void MyMesh::handleCmdFrame(size_t len) {
     } else {
       writeErrFrame(ERR_CODE_NOT_FOUND);
     }
+  } else if (cmd_frame[0] == CMD_FACTORY_RESET && memcmp(&cmd_frame[1], "reset", 5) == 0) {
+    bool success = _store->formatFileSystem();
+    if (success) {
+      writeOKFrame();
+      delay(1000);
+      board.reboot();  // doesn't return
+    } else {
+      writeErrFrame(ERR_CODE_FILE_IO_ERROR);
+    }
   } else {
     writeErrFrame(ERR_CODE_UNSUPPORTED_CMD);
     MESH_DEBUG_PRINTLN("ERROR: unknown command: %02X", cmd_frame[0]);

examples/companion_radio/MyMesh.h

@@ -7,14 +7,14 @@
 #endif
 
 /*------------ Frame Protocol --------------*/
-#define FIRMWARE_VER_CODE 6
+#define FIRMWARE_VER_CODE 7
 
 #ifndef FIRMWARE_BUILD_DATE
-#define FIRMWARE_BUILD_DATE "29 Jun 2025"
+#define FIRMWARE_BUILD_DATE "24 Jul 2025"
 #endif
 
 #ifndef FIRMWARE_VERSION
-#define FIRMWARE_VERSION "v1.7.1"
+#define FIRMWARE_VERSION "v1.7.4"
 #endif
 
 #if defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
@@ -97,6 +97,7 @@ protected:
   float getAirtimeBudgetFactor() const override;
   int getInterferenceThreshold() const override;
   int calcRxDelay(float score, uint32_t air_time) const override;
+  uint8_t getExtraAckTransmitCount() const override;
 
   void logRxRaw(float snr, float rssi, const uint8_t raw[], int len) override;
   bool isAutoAddEnabled() const override;
@@ -160,7 +161,8 @@ private:
   NodePrefs _prefs;
   uint32_t pending_login;
   uint32_t pending_status;
-  uint32_t pending_telemetry;
+  uint32_t pending_telemetry;   // pending _TELEMETRY_REQ
+  uint32_t pending_req;   // pending _BINARY_REQ
   BaseSerialInterface *_serial;
 
   ContactsIterator _iter;

examples/companion_radio/NodePrefs.h

@@ -14,7 +14,7 @@ struct NodePrefs {  // persisted to file
   float freq;
   uint8_t sf;
   uint8_t cr;
-  uint8_t reserved1;
+  uint8_t multi_acks;
   uint8_t manual_add_contacts;
   float bw;
   uint8_t tx_power_dbm;

examples/companion_radio/UITask.cpp

@@ -408,8 +408,12 @@ void UITask::handleButtonQuadruplePress() {
       if (strcmp(_sensors->getSettingName(i), "gps") == 0) {
         if (strcmp(_sensors->getSettingValue(i), "1") == 0) {
           _sensors->setSettingValue("gps", "0");
+          soundBuzzer(UIEventType::ack);
+          sprintf(_alert, "GPS: Disabled");
         } else {
           _sensors->setSettingValue("gps", "1");
+          soundBuzzer(UIEventType::ack);
+          sprintf(_alert, "GPS: Enabled");
         }
         break;
       }

examples/simple_repeater/main.cpp

@@ -22,11 +22,11 @@
 /* ------------------------------ Config -------------------------------- */
 
 #ifndef FIRMWARE_BUILD_DATE
-  #define FIRMWARE_BUILD_DATE   "29 Jun 2025"
+  #define FIRMWARE_BUILD_DATE   "24 Jul 2025"
 #endif
 
 #ifndef FIRMWARE_VERSION
-  #define FIRMWARE_VERSION   "v1.7.1"
+  #define FIRMWARE_VERSION   "v1.7.4"
 #endif
 
 #ifndef LORA_FREQ
@@ -120,7 +120,7 @@ struct NeighbourInfo {
   int8_t snr; // multiplied by 4, user should divide to get float value
 };
 
-#define CLI_REPLY_DELAY_MILLIS  1000
+#define CLI_REPLY_DELAY_MILLIS  600
 
 class MyMesh : public mesh::Mesh, public CommonCLICallbacks {
   FILESYSTEM* _fs;
@@ -134,6 +134,11 @@ class MyMesh : public mesh::Mesh, public CommonCLICallbacks {
   NeighbourInfo neighbours[MAX_NEIGHBOURS];
 #endif
   CayenneLPP telemetry;
+  unsigned long set_radio_at, revert_radio_at;
+  float pending_freq;
+  float pending_bw;
+  uint8_t pending_sf;
+  uint8_t pending_cr;
 
   ClientInfo* putClient(const mesh::Identity& id) {
     uint32_t min_time = 0xFFFFFFFF;
@@ -149,7 +154,6 @@ class MyMesh : public mesh::Mesh, public CommonCLICallbacks {
     oldest->id = id;
     oldest->out_path_len = -1;  // initially out_path is unknown
     oldest->last_timestamp = 0;
-    self_id.calcSharedSecret(oldest->secret, id);   // calc ECDH shared secret
     return oldest;
   }
 
@@ -340,9 +344,12 @@ protected:
   int getAGCResetInterval() const override {
     return ((int)_prefs.agc_reset_interval) * 4000;   // milliseconds
   }
+  uint8_t getExtraAckTransmitCount() const override {
+    return _prefs.multi_acks;
+  }
 
-  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)
+  void onAnonDataRecv(mesh::Packet* packet, const uint8_t* secret, const mesh::Identity& sender, uint8_t* data, size_t len) override {
+    if (packet->getPayloadType() == PAYLOAD_TYPE_ANON_REQ) {  // received an initial request by a possible admin client (unknown at this stage)
       uint32_t timestamp;
       memcpy(&timestamp, data, 4);
 
@@ -369,6 +376,7 @@ protected:
       client->last_timestamp = timestamp;
       client->last_activity = getRTCClock()->getCurrentTime();
       client->is_admin = is_admin;
+      memcpy(client->secret, secret, PUB_KEY_SIZE);
 
       uint32_t now = getRTCClock()->getCurrentTimeUnique();
       memcpy(reply_data, &now, 4);   // response packets always prefixed with timestamp
@@ -500,12 +508,12 @@ protected:
         }
 
         uint8_t temp[166];
-        const char *command = (const char *) &data[5];
+        char *command = (char *) &data[5];
         char *reply = (char *) &temp[5];
         if (is_retry) {
           *reply = 0;
         } else {
-          _cli.handleCommand(sender_timestamp, command, reply);
+          handleCommand(sender_timestamp, command, reply);
         }
         int text_len = strlen(reply);
         if (text_len > 0) {
@@ -555,6 +563,7 @@ public:
   {
     memset(known_clients, 0, sizeof(known_clients));
     next_local_advert = next_flood_advert = 0;
+    set_radio_at = revert_radio_at = 0;
     _logging = false;
 
   #if MAX_NEIGHBOURS
@@ -581,8 +590,6 @@ public:
     _prefs.interference_threshold = 0;  // disabled
   }
 
-  CommonCLI* getCLI() { return &_cli; }
-
   void begin(FILESYSTEM* fs) {
     mesh::Mesh::begin();
     _fs = fs;
@@ -608,6 +615,16 @@ public:
     _cli.savePrefs(_fs);
   }
 
+  void applyTempRadioParams(float freq, float bw, uint8_t sf, uint8_t cr, int timeout_mins) override {
+    set_radio_at = futureMillis(2000);   // give CLI reply some time to be sent back, before applying temp radio params
+    pending_freq = freq;
+    pending_bw = bw;
+    pending_sf = sf;
+    pending_cr = cr;
+
+    revert_radio_at = futureMillis(2000 + timeout_mins*60*1000);   // schedule when to revert radio params
+  }
+
   bool formatFileSystem() override {
 #if defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
     return InternalFS.format();
@@ -706,6 +723,18 @@ public:
     ((SimpleMeshTables *)getTables())->resetStats();
   }
 
+  void handleCommand(uint32_t sender_timestamp, char* command, char* reply) {
+    while (*command == ' ') command++;   // skip leading spaces
+
+    if (strlen(command) > 4 && command[2] == '|') {  // optional prefix (for companion radio CLI)
+      memcpy(reply, command, 3);  // reflect the prefix back
+      reply += 3;
+      command += 3;
+    }
+
+    _cli.handleCommand(sender_timestamp, command, reply);  // common CLI commands
+  }
+
   void loop() {
     mesh::Mesh::loop();
 
@@ -721,6 +750,19 @@ public:
 
       updateAdvertTimer();   // schedule next local advert
     }
+
+    if (set_radio_at && millisHasNowPassed(set_radio_at)) {   // apply pending (temporary) radio params
+      set_radio_at = 0;  // clear timer
+      radio_set_params(pending_freq, pending_bw, pending_sf, pending_cr);
+      MESH_DEBUG_PRINTLN("Temp radio params");
+    }
+
+    if (revert_radio_at && millisHasNowPassed(revert_radio_at)) {   // revert radio params to orig
+      revert_radio_at = 0;  // clear timer
+      radio_set_params(_prefs.freq, _prefs.bw, _prefs.sf, _prefs.cr);
+      MESH_DEBUG_PRINTLN("Radio params restored");
+    }
+
   #ifdef DISPLAY_CLASS
     ui_task.loop();
   #endif
@@ -817,7 +859,7 @@ void loop() {
   if (len > 0 && command[len - 1] == '\r') {  // received complete line
     command[len - 1] = 0;  // replace newline with C string null terminator
     char reply[160];
-    the_mesh.getCLI()->handleCommand(0, command, reply);  // NOTE: there is no sender_timestamp via serial!
+    the_mesh.handleCommand(0, command, reply);  // NOTE: there is no sender_timestamp via serial!
     if (reply[0]) {
       Serial.print("  -> "); Serial.println(reply);
     }

examples/simple_room_server/main.cpp

@@ -22,11 +22,11 @@
 /* ------------------------------ Config -------------------------------- */
 
 #ifndef FIRMWARE_BUILD_DATE
-  #define FIRMWARE_BUILD_DATE   "29 Jun 2025"
+  #define FIRMWARE_BUILD_DATE   "24 Jul 2025"
 #endif
 
 #ifndef FIRMWARE_VERSION
-  #define FIRMWARE_VERSION   "v1.7.1"
+  #define FIRMWARE_VERSION   "v1.7.4"
 #endif
 
 #ifndef LORA_FREQ
@@ -165,6 +165,11 @@ class MyMesh : public mesh::Mesh, public CommonCLICallbacks {
   int next_post_idx;
   PostInfo posts[MAX_UNSYNCED_POSTS];   // cyclic queue
   CayenneLPP telemetry;
+  unsigned long set_radio_at, revert_radio_at;
+  float pending_freq;
+  float pending_bw;
+  uint8_t pending_sf;
+  uint8_t pending_cr;
 
   ClientInfo* putClient(const mesh::Identity& id) {
     for (int i = 0; i < num_clients; i++) {
@@ -188,7 +193,6 @@ class MyMesh : public mesh::Mesh, public CommonCLICallbacks {
     newClient->id = id;
     newClient->out_path_len = -1;  // initially out_path is unknown
     newClient->last_timestamp = 0;
-    self_id.calcSharedSecret(newClient->secret, id);   // calc ECDH shared secret
     return newClient;
   }
 
@@ -334,7 +338,7 @@ class MyMesh : public mesh::Mesh, public CommonCLICallbacks {
     }
     return 0;  // unknown command
   }
-   
+
 protected:
   float getAirtimeBudgetFactor() const override {
     return _prefs.airtime_factor;
@@ -425,6 +429,9 @@ protected:
   int getAGCResetInterval() const override {
     return ((int)_prefs.agc_reset_interval) * 4000;   // milliseconds
   }
+  uint8_t getExtraAckTransmitCount() const override {
+    return _prefs.multi_acks;
+  }
 
   bool allowPacketForward(const mesh::Packet* packet) override {
     if (_prefs.disable_fwd) return false;
@@ -432,8 +439,8 @@ protected:
     return true;
   }
 
-  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)
+  void onAnonDataRecv(mesh::Packet* packet, const uint8_t* secret, const mesh::Identity& sender, uint8_t* data, size_t len) override {
+    if (packet->getPayloadType() == PAYLOAD_TYPE_ANON_REQ) {  // received an initial request by a possible admin client (unknown at this stage)
       uint32_t sender_timestamp, sender_sync_since;
       memcpy(&sender_timestamp, data, 4);
       memcpy(&sender_sync_since, &data[4], 4);  // sender's "sync messags SINCE x" timestamp
@@ -465,6 +472,7 @@ protected:
       client->sync_since = sender_sync_since;
       client->pending_ack = 0;
       client->push_failures = 0;
+      memcpy(client->secret, secret, PUB_KEY_SIZE);
 
       uint32_t now = getRTCClock()->getCurrentTime();
       client->last_activity = now;
@@ -555,7 +563,7 @@ protected:
             if (is_retry) {
               temp[5] = 0;  // no reply
             } else {
-              _cli.handleCommand(sender_timestamp, (const char *) &data[5], (char *) &temp[5]);
+              handleCommand(sender_timestamp, (char *) &data[5], (char *) &temp[5]);
               temp[4] = (TXT_TYPE_CLI_DATA << 2);  // attempt and flags,  (NOTE: legacy was: TXT_TYPE_PLAIN)
             }
             send_ack = false;
@@ -578,15 +586,22 @@ protected:
 
         uint32_t delay_millis;
         if (send_ack) {
-          mesh::Packet* ack = createAck(ack_hash);
-          if (ack) {
-            if (client->out_path_len < 0) {
-              sendFlood(ack, TXT_ACK_DELAY);
-            } else {
-              sendDirect(ack, client->out_path, client->out_path_len, TXT_ACK_DELAY);
+          if (client->out_path_len < 0) {
+            mesh::Packet* ack = createAck(ack_hash);
+            if (ack) sendFlood(ack, TXT_ACK_DELAY);
+            delay_millis = TXT_ACK_DELAY + REPLY_DELAY_MILLIS;
+          } else {
+            uint32_t d = TXT_ACK_DELAY;
+            if (getExtraAckTransmitCount() > 0) {
+              mesh::Packet* a1 = createMultiAck(ack_hash, 1);
+              if (a1) sendDirect(a1, client->out_path, client->out_path_len, d);
+              d += 300;
             }
+
+            mesh::Packet* a2 = createAck(ack_hash);
+            if (a2) sendDirect(a2, client->out_path, client->out_path_len, d);
+            delay_millis = d + REPLY_DELAY_MILLIS;
           }
-          delay_millis = TXT_ACK_DELAY + REPLY_DELAY_MILLIS;
         } else {
           delay_millis = 0;
         }
@@ -711,6 +726,7 @@ public:
   {
     next_local_advert = next_flood_advert = 0;
     _logging = false;
+    set_radio_at = revert_radio_at = 0;
 
     // defaults
     memset(&_prefs, 0, sizeof(_prefs));
@@ -743,8 +759,6 @@ public:
     _num_posted = _num_post_pushes = 0;
   }
 
-  CommonCLI* getCLI() { return &_cli; }
-
   void begin(FILESYSTEM* fs) {
     mesh::Mesh::begin();
     _fs = fs;
@@ -770,6 +784,16 @@ public:
     _cli.savePrefs(_fs);
   }
 
+  void applyTempRadioParams(float freq, float bw, uint8_t sf, uint8_t cr, int timeout_mins) override {
+    set_radio_at = futureMillis(2000);   // give CLI reply some time to be sent back, before applying temp radio params
+    pending_freq = freq;
+    pending_bw = bw;
+    pending_sf = sf;
+    pending_cr = cr;
+
+    revert_radio_at = futureMillis(2000 + timeout_mins*60*1000);   // schedule when to revert radio params
+  }
+
   bool formatFileSystem() override {
     #if defined(NRF52_PLATFORM)
       return InternalFS.format();
@@ -845,6 +869,18 @@ public:
     ((SimpleMeshTables *)getTables())->resetStats();
   }
 
+  void handleCommand(uint32_t sender_timestamp, char* command, char* reply) {
+    while (*command == ' ') command++;   // skip leading spaces
+
+    if (strlen(command) > 4 && command[2] == '|') {  // optional prefix (for companion radio CLI)
+      memcpy(reply, command, 3);  // reflect the prefix back
+      reply += 3;
+      command += 3;
+    }
+
+    _cli.handleCommand(sender_timestamp, command, reply);  // common CLI commands
+  }
+
   void loop() {
     mesh::Mesh::loop();
 
@@ -902,6 +938,18 @@ public:
       updateAdvertTimer();   // schedule next local advert
     }
 
+    if (set_radio_at && millisHasNowPassed(set_radio_at)) {   // apply pending (temporary) radio params
+      set_radio_at = 0;  // clear timer
+      radio_set_params(pending_freq, pending_bw, pending_sf, pending_cr);
+      MESH_DEBUG_PRINTLN("Temp radio params");
+    }
+
+    if (revert_radio_at && millisHasNowPassed(revert_radio_at)) {   // revert radio params to orig
+      revert_radio_at = 0;  // clear timer
+      radio_set_params(_prefs.freq, _prefs.bw, _prefs.sf, _prefs.cr);
+      MESH_DEBUG_PRINTLN("Radio params restored");
+    }
+
   #ifdef DISPLAY_CLASS
     ui_task.loop();
   #endif
@@ -998,7 +1046,7 @@ void loop() {
   if (len > 0 && command[len - 1] == '\r') {  // received complete line
     command[len - 1] = 0;  // replace newline with C string null terminator
     char reply[160];
-    the_mesh.getCLI()->handleCommand(0, command, reply);  // NOTE: there is no sender_timestamp via serial!
+    the_mesh.handleCommand(0, command, reply);  // NOTE: there is no sender_timestamp via serial!
     if (reply[0]) {
       Serial.print("  -> "); Serial.println(reply);
     }

examples/simple_sensor/SensorMesh.cpp

@@ -0,0 +1,926 @@
+#include "SensorMesh.h"
+
+/* ------------------------------ Config -------------------------------- */
+
+#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 ADVERT_NAME
+  #define  ADVERT_NAME   "sensor"
+#endif
+#ifndef ADVERT_LAT
+  #define  ADVERT_LAT  0.0
+#endif
+#ifndef ADVERT_LON
+  #define  ADVERT_LON  0.0
+#endif
+
+#ifndef ADMIN_PASSWORD
+  #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
+
+#ifndef SENSOR_READ_INTERVAL_SECS
+  #define SENSOR_READ_INTERVAL_SECS  60
+#endif
+
+/* ------------------------------ Code -------------------------------- */
+
+#define REQ_TYPE_LOGIN               0x00
+#define REQ_TYPE_GET_STATUS          0x01
+#define REQ_TYPE_KEEP_ALIVE          0x02
+#define REQ_TYPE_GET_TELEMETRY_DATA  0x03
+#define REQ_TYPE_GET_AVG_MIN_MAX     0x04
+#define REQ_TYPE_GET_ACCESS_LIST     0x05
+
+#define RESP_SERVER_LOGIN_OK      0   // response to ANON_REQ
+
+#define CLI_REPLY_DELAY_MILLIS  1000
+
+#define LAZY_CONTACTS_WRITE_DELAY       5000
+
+#define ALERT_ACK_EXPIRY_MILLIS         8000   // wait 8 secs for ACKs to alert messages
+
+static File openAppend(FILESYSTEM* _fs, const char* fname) {
+  #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
+}
+
+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 SensorMesh::loadContacts() {
+  num_contacts = 0;
+  if (_fs->exists("/s_contacts")) {
+  #if defined(RP2040_PLATFORM)
+    File file = _fs->open("/s_contacts", "r");
+  #else
+    File file = _fs->open("/s_contacts");
+  #endif
+    if (file) {
+      bool full = false;
+      while (!full) {
+        ContactInfo c;
+        uint8_t pub_key[32];
+        uint8_t unused[6];
+
+        bool success = (file.read(pub_key, 32) == 32);
+        success = success && (file.read((uint8_t *) &c.permissions, 1) == 1);
+        success = success && (file.read(unused, 6) == 6);
+        success = success && (file.read((uint8_t *)&c.out_path_len, 1) == 1);
+        success = success && (file.read(c.out_path, 64) == 64);
+        success = success && (file.read(c.shared_secret, PUB_KEY_SIZE) == PUB_KEY_SIZE);
+        c.last_timestamp = 0;  // transient
+        c.last_activity = 0;
+
+        if (!success) break; // EOF
+
+        c.id = mesh::Identity(pub_key);
+        if (num_contacts < MAX_CONTACTS) {
+          contacts[num_contacts++] = c;
+        } else {
+          full = true;
+        }
+      }
+      file.close();
+    }
+  }
+}
+
+void SensorMesh::saveContacts() {
+  File file = openWrite(_fs, "/s_contacts");
+  if (file) {
+    uint8_t unused[5];
+    memset(unused, 0, sizeof(unused));
+
+    for (int i = 0; i < num_contacts; i++) {
+      auto c = &contacts[i];
+      if (c->permissions == 0) continue;    // skip deleted entries
+
+      bool success = (file.write(c->id.pub_key, 32) == 32);
+      success = success && (file.write((uint8_t *) &c->permissions, 1) == 1);
+      success = success && (file.write(unused, 6) == 6);
+      success = success && (file.write((uint8_t *)&c->out_path_len, 1) == 1);
+      success = success && (file.write(c->out_path, 64) == 64);
+      success = success && (file.write(c->shared_secret, PUB_KEY_SIZE) == PUB_KEY_SIZE);
+
+      if (!success) break; // write failed
+    }
+    file.close();
+  }
+}
+
+static uint8_t getDataSize(uint8_t type) {
+    switch (type) {
+      case LPP_GPS:
+        return 9;
+      case LPP_POLYLINE:
+        return 8;  // TODO: this is MINIMIUM
+      case LPP_GYROMETER:
+      case LPP_ACCELEROMETER:
+        return 6;
+      case LPP_GENERIC_SENSOR:
+      case LPP_FREQUENCY:
+      case LPP_DISTANCE:
+      case LPP_ENERGY:
+      case LPP_UNIXTIME:
+        return 4;
+      case LPP_COLOUR:
+        return 3;
+      case LPP_ANALOG_INPUT:
+      case LPP_ANALOG_OUTPUT:
+      case LPP_LUMINOSITY:
+      case LPP_TEMPERATURE:
+      case LPP_CONCENTRATION:
+      case LPP_BAROMETRIC_PRESSURE:
+      case LPP_RELATIVE_HUMIDITY:
+      case LPP_ALTITUDE:
+      case LPP_VOLTAGE:
+      case LPP_CURRENT:
+      case LPP_DIRECTION:
+      case LPP_POWER:
+        return 2;
+    }
+    return 1;
+}
+
+static uint32_t getMultiplier(uint8_t type) {
+    switch (type) {
+      case LPP_CURRENT:
+      case LPP_DISTANCE:
+      case LPP_ENERGY:
+        return 1000;
+      case LPP_VOLTAGE:
+      case LPP_ANALOG_INPUT:
+      case LPP_ANALOG_OUTPUT:
+        return 100;
+      case LPP_TEMPERATURE:
+      case LPP_BAROMETRIC_PRESSURE:
+      case LPP_RELATIVE_HUMIDITY:
+        return 10;
+    }
+    return 1;
+}
+
+static bool isSigned(uint8_t type) {
+  return type == LPP_ALTITUDE || type == LPP_TEMPERATURE || type == LPP_GYROMETER ||
+      type == LPP_ANALOG_INPUT || type == LPP_ANALOG_OUTPUT || type == LPP_GPS || type == LPP_ACCELEROMETER;
+}
+
+static float getFloat(const uint8_t * buffer, uint8_t size, uint32_t multiplier, bool is_signed) {
+  uint32_t value = 0;
+  for (uint8_t i = 0; i < size; i++) {
+    value = (value << 8) + buffer[i];
+  }
+
+  int sign = 1;
+  if (is_signed) {
+    uint32_t bit = 1ul << ((size * 8) - 1);
+    if ((value & bit) == bit) {
+      value = (bit << 1) - value;
+      sign = -1;
+    }
+  }
+  return sign * ((float) value / multiplier);
+}
+
+static uint8_t putFloat(uint8_t * dest, float value, uint8_t size, uint32_t multiplier, bool is_signed) {
+  // check sign
+  bool sign = value < 0;
+  if (sign) value = -value;
+
+  // get value to store
+  uint32_t v = value * multiplier;
+
+  // format an uint32_t as if it was an int32_t
+  if (is_signed & sign) {
+    uint32_t mask = (1 << (size * 8)) - 1;
+    v = v & mask;
+    if (sign) v = mask - v + 1;
+  }
+
+  // add bytes (MSB first)
+  for (uint8_t i=1; i<=size; i++) {
+    dest[size - i] = (v & 0xFF);
+    v >>= 8;
+  }
+  return size;
+}
+
+uint8_t SensorMesh::handleRequest(uint8_t perms, uint32_t sender_timestamp, uint8_t req_type, uint8_t* payload, size_t payload_len) {
+  memcpy(reply_data, &sender_timestamp, 4);   // reflect sender_timestamp back in response packet (kind of like a 'tag')
+
+  if (req_type == REQ_TYPE_GET_TELEMETRY_DATA) {  // allow all
+    telemetry.reset();
+    telemetry.addVoltage(TELEM_CHANNEL_SELF, (float)board.getBattMilliVolts() / 1000.0f);
+    // query other sensors -- target specific
+    sensors.querySensors(0xFF, telemetry);  // allow all telemetry permissions for admin or guest
+    // TODO: let requester know permissions they have:  telemetry.addPresence(TELEM_CHANNEL_SELF, perms);
+
+    uint8_t tlen = telemetry.getSize();
+    memcpy(&reply_data[4], telemetry.getBuffer(), tlen);
+    return 4 + tlen;  // reply_len
+  }
+  if (req_type == REQ_TYPE_GET_AVG_MIN_MAX && (perms & PERM_ACL_ROLE_MASK) >= PERM_ACL_READ_ONLY) {
+    uint32_t start_secs_ago, end_secs_ago;
+    memcpy(&start_secs_ago, &payload[0], 4);
+    memcpy(&end_secs_ago, &payload[4], 4);
+    uint8_t res1 = payload[8];   // reserved for future  (extra query params)
+    uint8_t res2 = payload[9];
+
+    MinMaxAvg data[8];
+    int n;
+    if (res1 == 0 && res2 == 0) {
+      n = querySeriesData(start_secs_ago, end_secs_ago, data, 8);
+    } else {
+      n = 0;
+    }
+
+    uint8_t ofs = 4;
+    {
+      uint32_t now = getRTCClock()->getCurrentTime();
+      memcpy(&reply_data[ofs], &now, 4); ofs += 4;
+    }
+
+    for (int i = 0; i < n; i++) {
+      auto d = &data[i];
+      reply_data[ofs++] = d->_channel;
+      reply_data[ofs++] = d->_lpp_type;
+      uint8_t sz = getDataSize(d->_lpp_type);
+      uint32_t mult = getMultiplier(d->_lpp_type);
+      bool is_signed = isSigned(d->_lpp_type);
+      ofs += putFloat(&reply_data[ofs], d->_min, sz, mult, is_signed);
+      ofs += putFloat(&reply_data[ofs], d->_max, sz, mult, is_signed);
+      ofs += putFloat(&reply_data[ofs], d->_avg, sz, mult, is_signed);
+    }
+    return ofs;
+  }
+  if (req_type == REQ_TYPE_GET_ACCESS_LIST && (perms & PERM_ACL_ROLE_MASK) == PERM_ACL_ADMIN) {
+    uint8_t res1 = payload[0];   // reserved for future  (extra query params)
+    uint8_t res2 = payload[1];
+    if (res1 == 0 && res2 == 0) {
+      uint8_t ofs = 4;
+      for (int i = 0; i < num_contacts && ofs + 7 <= sizeof(reply_data) - 4; i++) {
+        auto c = &contacts[i];
+        if (c->permissions == 0) continue;  // skip deleted entries
+        memcpy(&reply_data[ofs], c->id.pub_key, 6); ofs += 6;  // just 6-byte pub_key prefix
+        reply_data[ofs++] = c->permissions;
+      }
+      return ofs;
+    }
+  }
+  return 0;  // unknown command
+}
+
+mesh::Packet* SensorMesh::createSelfAdvert() {
+  uint8_t app_data[MAX_ADVERT_DATA_SIZE];
+  uint8_t app_data_len;
+  {
+    AdvertDataBuilder builder(ADV_TYPE_SENSOR, _prefs.node_name, _prefs.node_lat, _prefs.node_lon);
+    app_data_len = builder.encodeTo(app_data);
+  }
+
+  return createAdvert(self_id, app_data, app_data_len);
+}
+
+ContactInfo* SensorMesh::getContact(const uint8_t* pubkey, int key_len) {
+  for (int i = 0; i < num_contacts; i++) {
+    if (memcmp(pubkey, contacts[i].id.pub_key, key_len) == 0) return &contacts[i];  // already known
+  }
+  return NULL;  // not found
+}
+
+ContactInfo* SensorMesh::putContact(const mesh::Identity& id, uint8_t init_perms) {
+  uint32_t min_time = 0xFFFFFFFF;
+  ContactInfo* oldest = &contacts[MAX_CONTACTS - 1];
+  for (int i = 0; i < num_contacts; i++) {
+    if (id.matches(contacts[i].id)) return &contacts[i];  // already known
+    if (!contacts[i].isAdmin() && contacts[i].last_activity < min_time) {
+      oldest = &contacts[i];
+      min_time = oldest->last_activity;
+    }
+  }
+
+  ContactInfo* c;
+  if (num_contacts < MAX_CONTACTS) {
+    c = &contacts[num_contacts++];
+  } else {
+    c = oldest;  // evict least active contact
+  }
+  memset(c, 0, sizeof(*c));
+  c->permissions = init_perms;
+  c->id = id;
+  c->out_path_len = -1;  // initially out_path is unknown
+  return c;
+}
+
+bool SensorMesh::applyContactPermissions(const uint8_t* pubkey, int key_len, uint8_t perms) {
+  ContactInfo* c;
+  if ((perms & PERM_ACL_ROLE_MASK) == PERM_ACL_GUEST) {  // guest role is not persisted in contacts
+    c = getContact(pubkey, key_len);
+    if (c == NULL) return false;   // partial pubkey not found
+
+    num_contacts--;   // delete from contacts[]
+    int i = c - contacts;
+    while (i < num_contacts) {
+      contacts[i] = contacts[i + 1];
+      i++;
+    }
+  } else {
+    if (key_len < PUB_KEY_SIZE) return false;   // need complete pubkey when adding/modifying
+
+    mesh::Identity id(pubkey);
+    c = putContact(id, 0);
+
+    c->permissions = perms;  // update their permissions
+    self_id.calcSharedSecret(c->shared_secret, pubkey);
+  }
+  dirty_contacts_expiry = futureMillis(LAZY_CONTACTS_WRITE_DELAY);   // trigger saveContacts()
+  return true;
+}
+
+void SensorMesh::sendAlert(ContactInfo* c, Trigger* t) {
+  int text_len = strlen(t->text);
+
+  uint8_t data[MAX_PACKET_PAYLOAD];
+  memcpy(data, &t->timestamp, 4);
+  data[4] = (TXT_TYPE_PLAIN << 2) | t->attempt;  // attempt and flags
+  memcpy(&data[5], t->text, text_len);
+
+  // calc expected ACK reply
+  mesh::Utils::sha256((uint8_t *)&t->expected_acks[t->attempt], 4, data, 5 + text_len, self_id.pub_key, PUB_KEY_SIZE);
+  t->attempt++;
+
+  auto pkt = createDatagram(PAYLOAD_TYPE_TXT_MSG, c->id, c->shared_secret, data, 5 + text_len);
+  if (pkt) {
+    if (c->out_path_len >= 0) {  // we have an out_path, so send DIRECT
+      sendDirect(pkt, c->out_path, c->out_path_len);
+    } else {
+      sendFlood(pkt);
+    }
+  }
+  t->send_expiry = futureMillis(ALERT_ACK_EXPIRY_MILLIS);
+}
+
+void SensorMesh::alertIf(bool condition, Trigger& t, AlertPriority pri, const char* text) {
+  if (condition) {
+    if (!t.isTriggered() && num_alert_tasks < MAX_CONCURRENT_ALERTS) {
+      StrHelper::strncpy(t.text, text, sizeof(t.text));
+      t.pri = pri;
+      t.send_expiry = 0;  // signal that initial send is needed
+      t.attempt = 4;
+      t.curr_contact_idx = -1;  // start iterating thru contacts[]
+
+      alert_tasks[num_alert_tasks++] = &t;  // add to queue
+    }
+  } else {
+    if (t.isTriggered()) {
+      t.text[0] = 0;
+      // remove 't' from alert queue
+      int i = 0;
+      while (i < num_alert_tasks && alert_tasks[i] != &t) i++;
+
+      if (i < num_alert_tasks) {  // found,  now delete from array
+        num_alert_tasks--;
+        while (i < num_alert_tasks) {
+          alert_tasks[i] = alert_tasks[i + 1];
+          i++;
+        }
+      }
+    }
+  }
+}
+
+float SensorMesh::getAirtimeBudgetFactor() const {
+  return _prefs.airtime_factor;
+}
+
+bool SensorMesh::allowPacketForward(const mesh::Packet* packet) {
+  if (_prefs.disable_fwd) return false;
+  if (packet->isRouteFlood() && packet->path_len >= _prefs.flood_max) return false;
+  return true;
+}
+
+int SensorMesh::calcRxDelay(float score, uint32_t air_time) const {
+  if (_prefs.rx_delay_base <= 0.0f) return 0;
+  return (int) ((pow(_prefs.rx_delay_base, 0.85f - score) - 1.0) * air_time);
+}
+
+uint32_t SensorMesh::getRetransmitDelay(const mesh::Packet* packet) {
+  uint32_t t = (_radio->getEstAirtimeFor(packet->path_len + packet->payload_len + 2) * _prefs.tx_delay_factor);
+  return getRNG()->nextInt(0, 6)*t;
+}
+uint32_t SensorMesh::getDirectRetransmitDelay(const mesh::Packet* packet) {
+  uint32_t t = (_radio->getEstAirtimeFor(packet->path_len + packet->payload_len + 2) * _prefs.direct_tx_delay_factor);
+  return getRNG()->nextInt(0, 6)*t;
+}
+int SensorMesh::getInterferenceThreshold() const {
+  return _prefs.interference_threshold;
+}
+int SensorMesh::getAGCResetInterval() const {
+  return ((int)_prefs.agc_reset_interval) * 4000;   // milliseconds
+}
+
+uint8_t SensorMesh::handleLoginReq(const mesh::Identity& sender, const uint8_t* secret, uint32_t sender_timestamp, const uint8_t* data) {
+  ContactInfo* client;
+  if (data[0] == 0) {   // blank password, just check if sender is in ACL
+    client = getContact(sender.pub_key, PUB_KEY_SIZE);
+    if (client == NULL) {
+    #if MESH_DEBUG
+      MESH_DEBUG_PRINTLN("Login, sender not in ACL");
+    #endif
+      return 0;
+    }
+  } else {
+    if (strcmp((char *) data, _prefs.password) != 0) {  // check for valid admin password
+    #if MESH_DEBUG
+      MESH_DEBUG_PRINTLN("Invalid password: %s", &data[4]);
+    #endif
+      return 0;
+    }
+
+    client = putContact(sender, PERM_RECV_ALERTS_HI | PERM_RECV_ALERTS_LO);  // add to contacts (if not already known)
+    if (sender_timestamp <= client->last_timestamp) {
+      MESH_DEBUG_PRINTLN("Possible login replay attack!");
+      return 0;  // FATAL: client table is full -OR- replay attack
+    }
+
+    MESH_DEBUG_PRINTLN("Login success!");
+    client->last_timestamp = sender_timestamp;
+    client->last_activity = getRTCClock()->getCurrentTime();
+    client->permissions |= PERM_ACL_ADMIN;
+    memcpy(client->shared_secret, secret, PUB_KEY_SIZE);
+
+    dirty_contacts_expiry = futureMillis(LAZY_CONTACTS_WRITE_DELAY);
+  }
+
+  uint32_t now = getRTCClock()->getCurrentTimeUnique();
+  memcpy(reply_data, &now, 4);   // response packets always prefixed with timestamp
+  reply_data[4] = RESP_SERVER_LOGIN_OK;
+  reply_data[5] = 0;  // NEW: recommended keep-alive interval (secs / 16)
+  reply_data[6] = client->isAdmin() ? 1 : 0;
+  reply_data[7] = client->permissions;
+  getRNG()->random(&reply_data[8], 4);   // random blob to help packet-hash uniqueness
+
+  return 12;  // reply length
+}
+
+void SensorMesh::handleCommand(uint32_t sender_timestamp, char* command, char* reply) {
+  while (*command == ' ') command++;   // skip leading spaces
+
+  if (strlen(command) > 4 && command[2] == '|') {  // optional prefix (for companion radio CLI)
+    memcpy(reply, command, 3);  // reflect the prefix back
+    reply += 3;
+    command += 3;
+  }
+
+  // first, see if this is a custom-handled CLI command (ie. in main.cpp)
+  if (handleCustomCommand(sender_timestamp, command, reply)) {
+    return;   // command has been handled
+  }
+
+  // handle sensor-specific CLI commands
+  if (memcmp(command, "setperm ", 8) == 0) {   // format:  setperm {pubkey-hex} {permissions-int8}
+    char* hex = &command[8];
+    char* sp = strchr(hex, ' ');   // look for separator char
+    if (sp == NULL) {
+      strcpy(reply, "Err - bad params");
+    } else {
+      *sp++ = 0;   // replace space with null terminator
+
+      uint8_t pubkey[PUB_KEY_SIZE];
+      int hex_len = min(sp - hex, PUB_KEY_SIZE*2);
+      if (mesh::Utils::fromHex(pubkey, hex_len / 2, hex)) {
+        uint8_t perms = atoi(sp);
+        if (applyContactPermissions(pubkey, hex_len / 2, perms)) {
+          strcpy(reply, "OK");
+        } else {
+          strcpy(reply, "Err - invalid params");
+        }
+      } else {
+        strcpy(reply, "Err - bad pubkey");
+      }
+    }
+  } else if (sender_timestamp == 0 && strcmp(command, "get acl") == 0) {
+    Serial.println("ACL:");
+    for (int i = 0; i < num_contacts; i++) {
+      auto c = &contacts[i];
+      if (c->permissions == 0) continue;  // skip deleted entries
+
+      Serial.printf("%02X ", c->permissions);
+      mesh::Utils::printHex(Serial, c->id.pub_key, PUB_KEY_SIZE);
+      Serial.printf("\n");
+    }
+    reply[0] = 0;
+  } else {
+    _cli.handleCommand(sender_timestamp, command, reply);  // common CLI commands
+  }
+}
+
+void SensorMesh::onAnonDataRecv(mesh::Packet* packet, const uint8_t* secret, const mesh::Identity& sender, uint8_t* data, size_t len) {
+  if (packet->getPayloadType() == PAYLOAD_TYPE_ANON_REQ) {  // received an initial request by a possible admin client (unknown at this stage)
+    uint32_t timestamp;
+    memcpy(&timestamp, data, 4);
+
+    data[len] = 0;  // ensure null terminator
+    uint8_t reply_len = handleLoginReq(sender, secret, timestamp, &data[4]);
+
+    if (reply_len == 0) return;   // invalid request
+
+    if (packet->isRouteFlood()) {
+      // let this sender know path TO here, so they can use sendDirect(), and ALSO encode the response
+      mesh::Packet* path = createPathReturn(sender, 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, sender, secret, reply_data, reply_len);
+      if (reply) sendFlood(reply, SERVER_RESPONSE_DELAY);
+    }
+  }
+}
+
+int SensorMesh::searchPeersByHash(const uint8_t* hash) {
+  int n = 0;
+  for (int i = 0; i < num_contacts && n < MAX_SEARCH_RESULTS; i++) {
+    if (contacts[i].id.isHashMatch(hash)) {
+      matching_peer_indexes[n++] = i;  // store the INDEXES of matching contacts (for subsequent 'peer' methods)
+    }
+  }
+  return n;
+}
+
+void SensorMesh::getPeerSharedSecret(uint8_t* dest_secret, int peer_idx) {
+  int i = matching_peer_indexes[peer_idx];
+  if (i >= 0 && i < num_contacts) {
+    // lookup pre-calculated shared_secret
+    memcpy(dest_secret, contacts[i].shared_secret, PUB_KEY_SIZE);
+  } else {
+    MESH_DEBUG_PRINTLN("getPeerSharedSecret: Invalid peer idx: %d", i);
+  }
+}
+
+void SensorMesh::onPeerDataRecv(mesh::Packet* packet, uint8_t type, int sender_idx, const uint8_t* secret, uint8_t* data, size_t len) {
+  int i = matching_peer_indexes[sender_idx];
+  if (i < 0 || i >= num_contacts) {
+    MESH_DEBUG_PRINTLN("onPeerDataRecv: Invalid sender idx: %d", i);
+    return;
+  }
+
+  ContactInfo& from = contacts[i];
+
+  if (type == PAYLOAD_TYPE_REQ) {  // request (from a known contact)
+    uint32_t timestamp;
+    memcpy(&timestamp, data, 4);
+
+    if (timestamp > from.last_timestamp) {  // prevent replay attacks
+      uint8_t reply_len = handleRequest(from.isAdmin() ? 0xFF : from.permissions, timestamp, data[4], &data[5], len - 5);
+      if (reply_len == 0) return;  // invalid command
+
+      from.last_timestamp = timestamp;
+      from.last_activity = getRTCClock()->getCurrentTime();
+
+      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, reply_data, reply_len);
+        if (path) sendFlood(path, SERVER_RESPONSE_DELAY);
+      } else {
+        mesh::Packet* reply = createDatagram(PAYLOAD_TYPE_RESPONSE, from.id, secret, reply_data, 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 {
+      MESH_DEBUG_PRINTLN("onPeerDataRecv: possible replay attack detected");
+    }
+  } else if (type == PAYLOAD_TYPE_TXT_MSG && len > 5 && from.isAdmin()) {   // a CLI command
+    uint32_t sender_timestamp;
+    memcpy(&sender_timestamp, data, 4);  // timestamp (by sender's RTC clock - which could be wrong)
+    uint flags = (data[4] >> 2);   // message attempt number, and other flags
+
+    if (!(flags == TXT_TYPE_CLI_DATA)) {
+      MESH_DEBUG_PRINTLN("onPeerDataRecv: unsupported text type received: flags=%02x", (uint32_t)flags);
+    } else if (sender_timestamp > from.last_timestamp) {  // prevent replay attacks
+      from.last_timestamp = sender_timestamp;
+      from.last_activity = getRTCClock()->getCurrentTime();
+
+      // len can be > original length, but 'text' will be padded with zeroes
+      data[len] = 0; // need to make a C string again, with null terminator
+
+      uint8_t temp[166];
+      char *command = (char *) &data[5];
+      char *reply = (char *) &temp[5];
+      handleCommand(sender_timestamp, command, reply);
+
+      int text_len = strlen(reply);
+      if (text_len > 0) {
+        uint32_t timestamp = getRTCClock()->getCurrentTimeUnique();
+        if (timestamp == sender_timestamp) {
+          // WORKAROUND: the two timestamps need to be different, in the CLI view
+          timestamp++;
+        }
+        memcpy(temp, &timestamp, 4);   // mostly an extra blob to help make packet_hash unique
+        temp[4] = (TXT_TYPE_CLI_DATA << 2);
+
+        auto reply = createDatagram(PAYLOAD_TYPE_TXT_MSG, from.id, secret, temp, 5 + text_len);
+        if (reply) {
+          if (from.out_path_len < 0) {
+            sendFlood(reply, CLI_REPLY_DELAY_MILLIS);
+          } else {
+            sendDirect(reply, from.out_path, from.out_path_len, CLI_REPLY_DELAY_MILLIS);
+          }
+        }
+      }
+    } else {
+      MESH_DEBUG_PRINTLN("onPeerDataRecv: possible replay attack detected");
+    }
+  }
+}
+
+bool SensorMesh::onPeerPathRecv(mesh::Packet* packet, int sender_idx, const uint8_t* secret, uint8_t* path, uint8_t path_len, uint8_t extra_type, uint8_t* extra, uint8_t extra_len) {
+  int i = matching_peer_indexes[sender_idx];
+  if (i < 0 || i >= num_contacts) {
+    MESH_DEBUG_PRINTLN("onPeerPathRecv: Invalid sender idx: %d", i);
+    return false;
+  }
+
+  ContactInfo& from = contacts[i];
+
+  MESH_DEBUG_PRINTLN("PATH to contact, path_len=%d", (uint32_t) path_len);
+  // NOTE: for this impl, we just replace the current 'out_path' regardless, whenever sender sends us a new out_path.
+  // FUTURE: could store multiple out_paths per contact, and try to find which is the 'best'(?)
+  memcpy(from.out_path, path, from.out_path_len = path_len);  // store a copy of path, for sendDirect()
+  from.last_activity = getRTCClock()->getCurrentTime();
+
+  // REVISIT: maybe make ALL out_paths non-persisted to minimise flash writes??
+  if (from.isAdmin()) {
+    // only do saveContacts() (of this out_path change) if this is an admin
+    dirty_contacts_expiry = futureMillis(LAZY_CONTACTS_WRITE_DELAY);
+  }
+
+  // NOTE: no reciprocal path send!!
+  return false;
+}
+
+void SensorMesh::onAckRecv(mesh::Packet* packet, uint32_t ack_crc) {
+  if (num_alert_tasks > 0) {
+    auto t = alert_tasks[0];   // check current alert task
+    for (int i = 0; i < t->attempt; i++) {
+      if (ack_crc == t->expected_acks[i]) {   // matching ACK!
+        t->attempt = 4;  // signal to move to next contact
+        t->send_expiry = 0;
+        packet->markDoNotRetransmit();   // ACK was for this node, so don't retransmit
+        return;
+      }
+    }
+  }
+}
+
+SensorMesh::SensorMesh(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),
+      _cli(board, rtc, &_prefs, this), telemetry(MAX_PACKET_PAYLOAD - 4)
+{
+  num_contacts = 0;
+  next_local_advert = next_flood_advert = 0;
+  dirty_contacts_expiry = 0;
+  last_read_time = 0;
+  num_alert_tasks = 0;
+  set_radio_at = revert_radio_at = 0;
+
+  // defaults
+  memset(&_prefs, 0, sizeof(_prefs));
+  _prefs.airtime_factor = 1.0;    // one half
+  _prefs.rx_delay_base =   0.0f;  // turn off by default, was 10.0;
+  _prefs.tx_delay_factor = 0.5f;   // was 0.25f
+  StrHelper::strncpy(_prefs.node_name, ADVERT_NAME, sizeof(_prefs.node_name));
+  _prefs.node_lat = ADVERT_LAT;
+  _prefs.node_lon = ADVERT_LON;
+  StrHelper::strncpy(_prefs.password, ADMIN_PASSWORD, sizeof(_prefs.password));
+  _prefs.freq = LORA_FREQ;
+  _prefs.sf = LORA_SF;
+  _prefs.bw = LORA_BW;
+  _prefs.cr = LORA_CR;
+  _prefs.tx_power_dbm = LORA_TX_POWER;
+  _prefs.advert_interval = 1;  // default to 2 minutes for NEW installs
+  _prefs.flood_advert_interval = 0;   // disabled
+  _prefs.disable_fwd = true;
+  _prefs.flood_max = 64;
+  _prefs.interference_threshold = 0;  // disabled
+}
+
+void SensorMesh::begin(FILESYSTEM* fs) {
+  mesh::Mesh::begin();
+  _fs = fs;
+  // load persisted prefs
+  _cli.loadPrefs(_fs);
+
+  loadContacts();
+
+  radio_set_params(_prefs.freq, _prefs.bw, _prefs.sf, _prefs.cr);
+  radio_set_tx_power(_prefs.tx_power_dbm);
+
+  updateAdvertTimer();
+  updateFloodAdvertTimer();
+}
+
+bool SensorMesh::formatFileSystem() {
+#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"
+    return false;
+#endif
+}
+
+void SensorMesh::applyTempRadioParams(float freq, float bw, uint8_t sf, uint8_t cr, int timeout_mins) {
+  set_radio_at = futureMillis(2000);   // give CLI reply some time to be sent back, before applying temp radio params
+  pending_freq = freq;
+  pending_bw = bw;
+  pending_sf = sf;
+  pending_cr = cr;
+
+  revert_radio_at = futureMillis(2000 + timeout_mins*60*1000);   // schedule when to revert radio params
+}
+
+void SensorMesh::sendSelfAdvertisement(int delay_millis) {
+  mesh::Packet* pkt = createSelfAdvert();
+  if (pkt) {
+    sendFlood(pkt, delay_millis);
+  } else {
+    MESH_DEBUG_PRINTLN("ERROR: unable to create advertisement packet!");
+  }
+}
+
+void SensorMesh::updateAdvertTimer() {
+  if (_prefs.advert_interval > 0) {  // schedule local advert timer
+    next_local_advert = futureMillis( ((uint32_t)_prefs.advert_interval) * 2 * 60 * 1000);
+  } else {
+    next_local_advert = 0;  // stop the timer
+  }
+}
+void SensorMesh::updateFloodAdvertTimer() {
+  if (_prefs.flood_advert_interval > 0) {  // schedule flood advert timer
+    next_flood_advert = futureMillis( ((uint32_t)_prefs.flood_advert_interval) * 60 * 60 * 1000);
+  } else {
+    next_flood_advert = 0;  // stop the timer
+  }
+}
+
+void SensorMesh::setTxPower(uint8_t power_dbm) {
+  radio_set_tx_power(power_dbm);
+}
+
+float SensorMesh::getTelemValue(uint8_t channel, uint8_t type) {
+  auto buf = telemetry.getBuffer();
+  uint8_t size = telemetry.getSize();
+  uint8_t i = 0;
+
+  while (i + 2 < size) {
+    // Get channel #
+    uint8_t ch = buf[i++];
+    // Get data type
+    uint8_t t = buf[i++];
+    uint8_t sz = getDataSize(t);
+
+    if (ch == channel && t == type) {
+      return getFloat(&buf[i], sz, getMultiplier(t), isSigned(t));
+    }
+    i += sz;  // skip
+  }
+  return 0.0f;   // not found
+}
+
+bool  SensorMesh::getGPS(uint8_t channel, float& lat, float& lon, float& alt) {
+  if (channel == TELEM_CHANNEL_SELF) {
+    lat = sensors.node_lat;
+    lon = sensors.node_lon;
+    alt = sensors.node_altitude;
+    return true;
+  }
+  // REVISIT: custom GPS channels??
+  return false;
+}
+
+void SensorMesh::loop() {
+  mesh::Mesh::loop();
+
+  if (next_flood_advert && millisHasNowPassed(next_flood_advert)) {
+    mesh::Packet* pkt = createSelfAdvert();
+    if (pkt) sendFlood(pkt);
+
+    updateFloodAdvertTimer();   // schedule next flood advert
+    updateAdvertTimer();   // also schedule local advert (so they don't overlap)
+  } else if (next_local_advert && millisHasNowPassed(next_local_advert)) {
+    mesh::Packet* pkt = createSelfAdvert();
+    if (pkt) sendZeroHop(pkt);
+
+    updateAdvertTimer();   // schedule next local advert
+  }
+
+  if (set_radio_at && millisHasNowPassed(set_radio_at)) {   // apply pending (temporary) radio params
+    set_radio_at = 0;  // clear timer
+    radio_set_params(pending_freq, pending_bw, pending_sf, pending_cr);
+    MESH_DEBUG_PRINTLN("Temp radio params");
+  }
+
+  if (revert_radio_at && millisHasNowPassed(revert_radio_at)) {   // revert radio params to orig
+    revert_radio_at = 0;  // clear timer
+    radio_set_params(_prefs.freq, _prefs.bw, _prefs.sf, _prefs.cr);
+    MESH_DEBUG_PRINTLN("Radio params restored");
+  }
+
+  uint32_t curr = getRTCClock()->getCurrentTime();
+  if (curr >= last_read_time + SENSOR_READ_INTERVAL_SECS) {
+    telemetry.reset();
+    telemetry.addVoltage(TELEM_CHANNEL_SELF, (float)board.getBattMilliVolts() / 1000.0f);
+    // query other sensors -- target specific
+    sensors.querySensors(0xFF, telemetry);  // allow all telemetry permissions
+
+    onSensorDataRead();
+
+    last_read_time = curr;
+  }
+
+  // check the alert send queue
+  if (num_alert_tasks > 0) {
+    auto t = alert_tasks[0];   // process head of queue
+
+    if (millisHasNowPassed(t->send_expiry)) {  // next send needed?
+      if (t->attempt >= 4) {  // max attempts reached, try next contact
+        t->curr_contact_idx++;
+        if (t->curr_contact_idx >= num_contacts) {  // no more contacts to try?
+          num_alert_tasks--;   // remove t from queue
+          for (int i = 0; i < num_alert_tasks; i++) {
+            alert_tasks[i] = alert_tasks[i + 1];
+          }
+        } else {
+          auto c = &contacts[t->curr_contact_idx];
+          uint16_t pri_mask = (t->pri == HIGH_PRI_ALERT) ? PERM_RECV_ALERTS_HI : PERM_RECV_ALERTS_LO;
+
+          if (c->permissions & pri_mask) {   // contact wants alert
+            // reset attempts
+            t->attempt = (t->pri == LOW_PRI_ALERT) ? 3 : 0;   // Low pri alerts, start at attempt #3 (ie. only make ONE attempt)
+            t->timestamp = getRTCClock()->getCurrentTimeUnique();   // need unique timestamp per contact
+
+            sendAlert(c, t);  // NOTE: modifies attempt, expected_acks[] and send_expiry
+          } else {
+            // next contact tested in next ::loop()
+          }
+        }
+      } else if (t->curr_contact_idx < num_contacts) {
+        auto c = &contacts[t->curr_contact_idx];   // send next attempt
+        sendAlert(c, t);  // NOTE: modifies attempt, expected_acks[] and send_expiry
+      } else {
+        // contact list has likely been modified while waiting for alert ACK, cancel this task
+        t->attempt = 4;   // next ::loop() will remove t from queue
+      }
+    }
+  }
+
+  // is there are pending dirty contacts write needed?
+  if (dirty_contacts_expiry && millisHasNowPassed(dirty_contacts_expiry)) {
+    saveContacts();
+    dirty_contacts_expiry = 0;
+  }
+}

examples/simple_sensor/SensorMesh.h

@@ -0,0 +1,175 @@
+#pragma once
+
+#include <Arduino.h>   // needed for PlatformIO
+#include <Mesh.h>
+
+#include "TimeSeriesData.h"
+
+#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 <helpers/ArduinoHelpers.h>
+#include <helpers/StaticPoolPacketManager.h>
+#include <helpers/SimpleMeshTables.h>
+#include <helpers/IdentityStore.h>
+#include <helpers/AdvertDataHelpers.h>
+#include <helpers/TxtDataHelpers.h>
+#include <helpers/CommonCLI.h>
+#include <RTClib.h>
+#include <target.h>
+
+#define PERM_ACL_ROLE_MASK     3   // lower 2 bits
+#define PERM_ACL_GUEST         0
+#define PERM_ACL_READ_ONLY     1
+#define PERM_ACL_READ_WRITE    2
+#define PERM_ACL_ADMIN         3
+
+#define PERM_RESERVED1         (1 << 2)
+#define PERM_RESERVED2         (1 << 3)
+#define PERM_RESERVED3         (1 << 4)
+#define PERM_RESERVED4         (1 << 5)
+#define PERM_RECV_ALERTS_LO    (1 << 6)   // low priority alerts
+#define PERM_RECV_ALERTS_HI    (1 << 7)   // high priority alerts
+
+struct ContactInfo {
+  mesh::Identity id;
+  uint8_t permissions;
+  int8_t out_path_len;
+  uint8_t out_path[MAX_PATH_SIZE];
+  uint8_t shared_secret[PUB_KEY_SIZE];
+  uint32_t last_timestamp;   // by THEIR clock  (transient)
+  uint32_t last_activity;    // by OUR clock    (transient)
+
+  bool isAdmin() const { return (permissions & PERM_ACL_ROLE_MASK) == PERM_ACL_ADMIN; }
+};
+
+#ifndef FIRMWARE_BUILD_DATE
+  #define FIRMWARE_BUILD_DATE   "24 Jul 2025"
+#endif
+
+#ifndef FIRMWARE_VERSION
+  #define FIRMWARE_VERSION   "v1.7.4"
+#endif
+
+#define FIRMWARE_ROLE "sensor"
+
+#define MAX_CONTACTS           20
+
+#define MAX_SEARCH_RESULTS      8
+#define MAX_CONCURRENT_ALERTS   4
+
+class SensorMesh : public mesh::Mesh, public CommonCLICallbacks {
+public:
+  SensorMesh(mesh::MainBoard& board, mesh::Radio& radio, mesh::MillisecondClock& ms, mesh::RNG& rng, mesh::RTCClock& rtc, mesh::MeshTables& tables);
+  void begin(FILESYSTEM* fs);
+  void loop();
+  void handleCommand(uint32_t sender_timestamp, char* command, char* reply);
+
+  // CommonCLI callbacks
+  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;
+  void sendSelfAdvertisement(int delay_millis) override;
+  void updateAdvertTimer() override;
+  void updateFloodAdvertTimer() override;
+  void setLoggingOn(bool enable) override {  }
+  void eraseLogFile() override { }
+  void dumpLogFile() override { }
+  void setTxPower(uint8_t power_dbm) override;
+  void formatNeighborsReply(char *reply) override {
+    strcpy(reply, "not supported");
+  }
+  const uint8_t* getSelfIdPubKey() override { return self_id.pub_key; }
+  void clearStats() override { }
+  void applyTempRadioParams(float freq, float bw, uint8_t sf, uint8_t cr, int timeout_mins) override;
+
+  float getTelemValue(uint8_t channel, uint8_t type);
+
+protected:
+  // current telemetry data queries
+  float getVoltage(uint8_t channel) { return getTelemValue(channel, LPP_VOLTAGE); }
+  float getCurrent(uint8_t channel) { return getTelemValue(channel, LPP_CURRENT); }
+  float getPower(uint8_t channel) { return getTelemValue(channel, LPP_POWER); }
+  float getTemperature(uint8_t channel) { return getTelemValue(channel, LPP_TEMPERATURE); }
+  float getRelativeHumidity(uint8_t channel) { return getTelemValue(channel, LPP_RELATIVE_HUMIDITY); }
+  float getBarometricPressure(uint8_t channel) { return getTelemValue(channel, LPP_BAROMETRIC_PRESSURE); }
+  float getAltitude(uint8_t channel) { return getTelemValue(channel, LPP_ALTITUDE); }
+  bool  getGPS(uint8_t channel, float& lat, float& lon, float& alt);
+
+  // alerts
+  enum AlertPriority { LOW_PRI_ALERT, HIGH_PRI_ALERT };
+
+  struct Trigger {
+    uint32_t timestamp;
+    AlertPriority pri;
+    uint32_t expected_acks[4];
+    int8_t   curr_contact_idx;
+    uint8_t  attempt;
+    unsigned long send_expiry;
+    char text[MAX_PACKET_PAYLOAD];
+
+    Trigger() { text[0] = 0; }
+    bool isTriggered() const { return text[0] != 0; }
+  };
+  void alertIf(bool condition, Trigger& t, AlertPriority pri, const char* text);
+
+  virtual void onSensorDataRead() = 0;   // for app to implement
+  virtual int querySeriesData(uint32_t start_secs_ago, uint32_t end_secs_ago, MinMaxAvg dest[], int max_num) = 0;  // for app to implement
+  virtual bool handleCustomCommand(uint32_t sender_timestamp, char* command, char* reply) { return false; }
+
+  // Mesh overrides
+  float getAirtimeBudgetFactor() const override;
+  bool allowPacketForward(const mesh::Packet* packet) override;
+  int calcRxDelay(float score, uint32_t air_time) const override;
+  uint32_t getRetransmitDelay(const mesh::Packet* packet) override;
+  uint32_t getDirectRetransmitDelay(const mesh::Packet* packet) override;
+  int getInterferenceThreshold() const override;
+  int getAGCResetInterval() const override;
+  void onAnonDataRecv(mesh::Packet* packet, const uint8_t* secret, const mesh::Identity& sender, uint8_t* data, size_t len) override;
+  int searchPeersByHash(const uint8_t* hash) override;
+  void getPeerSharedSecret(uint8_t* dest_secret, int peer_idx) override;
+  void onPeerDataRecv(mesh::Packet* packet, uint8_t type, int sender_idx, const uint8_t* secret, uint8_t* data, size_t len) override;
+  bool onPeerPathRecv(mesh::Packet* packet, int sender_idx, const uint8_t* secret, uint8_t* path, uint8_t path_len, uint8_t extra_type, uint8_t* extra, uint8_t extra_len) override;
+  void onAckRecv(mesh::Packet* packet, uint32_t ack_crc) override;
+
+private:
+  FILESYSTEM* _fs;
+  unsigned long next_local_advert, next_flood_advert;
+  NodePrefs _prefs;
+  CommonCLI _cli;
+  uint8_t reply_data[MAX_PACKET_PAYLOAD];
+  ContactInfo contacts[MAX_CONTACTS];
+  int num_contacts;
+  unsigned long dirty_contacts_expiry;
+  CayenneLPP telemetry;
+  uint32_t last_read_time;
+  int matching_peer_indexes[MAX_SEARCH_RESULTS];
+  int num_alert_tasks;
+  Trigger* alert_tasks[MAX_CONCURRENT_ALERTS];
+  unsigned long set_radio_at, revert_radio_at;
+  float pending_freq;
+  float pending_bw;
+  uint8_t pending_sf;
+  uint8_t pending_cr;
+
+  void loadContacts();
+  void saveContacts();
+  uint8_t handleLoginReq(const mesh::Identity& sender, const uint8_t* secret, uint32_t sender_timestamp, const uint8_t* data);
+  uint8_t handleRequest(uint8_t perms, uint32_t sender_timestamp, uint8_t req_type, uint8_t* payload, size_t payload_len);
+  mesh::Packet* createSelfAdvert();
+  ContactInfo* getContact(const uint8_t* pubkey, int key_len);
+  ContactInfo* putContact(const mesh::Identity& id, uint8_t init_perms);
+  bool applyContactPermissions(const uint8_t* pubkey, int key_len, uint8_t perms);
+
+  void sendAlert(ContactInfo* c, Trigger* t);
+
+};

examples/simple_sensor/TimeSeriesData.cpp

@@ -0,0 +1,45 @@
+#include "TimeSeriesData.h"
+
+void TimeSeriesData::recordData(mesh::RTCClock* clock, float value) {
+  uint32_t now = clock->getCurrentTime();
+  if (now >= last_timestamp + interval_secs) {
+    last_timestamp = now;
+
+    data[next] = value;   // append to cycle table
+    next = (next + 1) % num_slots;
+  }
+}
+
+void TimeSeriesData::calcMinMaxAvg(mesh::RTCClock* clock, uint32_t start_secs_ago, uint32_t end_secs_ago, MinMaxAvg* dest, uint8_t channel, uint8_t lpp_type) const {
+  int i = next, n = num_slots;
+  uint32_t ago = clock->getCurrentTime() - last_timestamp;
+  int num_values = 0;
+  float total = 0.0f;
+
+  dest->_channel = channel;
+  dest->_lpp_type = lpp_type;
+
+  // start at most recet recording, back-track through to oldest
+  while (n > 0) {
+    n--;
+    i = (i + num_slots - 1) % num_slots;  // go back by one
+    if (ago >= end_secs_ago && ago < start_secs_ago) {   // filter by the desired time range
+      float v = data[i];
+      num_values++;
+      total += v;
+      if (num_values == 1) {
+        dest->_max = dest->_min = v;
+      } else {
+        if (v < dest->_min) dest->_min = v;
+        if (v > dest->_max) dest->_max = v;
+      }
+    }
+    ago += interval_secs;
+  }
+  // calc average
+  if (num_values > 0) {
+    dest->_avg = total / num_values;
+  } else {
+    dest->_max = dest->_min = dest->_avg = NAN;
+  }
+}

examples/simple_sensor/TimeSeriesData.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <Arduino.h>
+#include <Mesh.h>
+
+struct MinMaxAvg {
+  float _min, _max, _avg;
+  uint8_t _lpp_type, _channel;
+};
+
+class TimeSeriesData {
+  float* data;
+  int num_slots, next;
+  uint32_t last_timestamp;
+  uint32_t interval_secs;
+
+public:
+  TimeSeriesData(float* array, int num, uint32_t secs) : num_slots(num), data(array), last_timestamp(0), next(0), interval_secs(secs) { 
+    memset(data, 0, sizeof(float)*num);
+  }
+  TimeSeriesData(int num, uint32_t secs) : num_slots(num), last_timestamp(0), next(0), interval_secs(secs) {
+    data = new float[num];
+    memset(data, 0, sizeof(float)*num);
+  }
+
+  void recordData(mesh::RTCClock* clock, float value);
+  void calcMinMaxAvg(mesh::RTCClock* clock, uint32_t start_secs_ago, uint32_t end_secs_ago, MinMaxAvg* dest, uint8_t channel, uint8_t lpp_type) const;
+};
+

examples/simple_sensor/UITask.cpp

@@ -0,0 +1,114 @@
+#include "UITask.h"
+#include <Arduino.h>
+#include <helpers/CommonCLI.h>
+
+#define AUTO_OFF_MILLIS      20000  // 20 seconds
+#define BOOT_SCREEN_MILLIS   4000   // 4 seconds
+
+// 'meshcore', 128x13px
+static const uint8_t meshcore_logo [] PROGMEM = {
+    0x3c, 0x01, 0xe3, 0xff, 0xc7, 0xff, 0x8f, 0x03, 0x87, 0xfe, 0x1f, 0xfe, 0x1f, 0xfe, 0x1f, 0xfe, 
+    0x3c, 0x03, 0xe3, 0xff, 0xc7, 0xff, 0x8e, 0x03, 0x8f, 0xfe, 0x3f, 0xfe, 0x1f, 0xff, 0x1f, 0xfe, 
+    0x3e, 0x03, 0xc3, 0xff, 0x8f, 0xff, 0x0e, 0x07, 0x8f, 0xfe, 0x7f, 0xfe, 0x1f, 0xff, 0x1f, 0xfc, 
+    0x3e, 0x07, 0xc7, 0x80, 0x0e, 0x00, 0x0e, 0x07, 0x9e, 0x00, 0x78, 0x0e, 0x3c, 0x0f, 0x1c, 0x00, 
+    0x3e, 0x0f, 0xc7, 0x80, 0x1e, 0x00, 0x0e, 0x07, 0x1e, 0x00, 0x70, 0x0e, 0x38, 0x0f, 0x3c, 0x00, 
+    0x7f, 0x0f, 0xc7, 0xfe, 0x1f, 0xfc, 0x1f, 0xff, 0x1c, 0x00, 0x70, 0x0e, 0x38, 0x0e, 0x3f, 0xf8, 
+    0x7f, 0x1f, 0xc7, 0xfe, 0x0f, 0xff, 0x1f, 0xff, 0x1c, 0x00, 0xf0, 0x0e, 0x38, 0x0e, 0x3f, 0xf8, 
+    0x7f, 0x3f, 0xc7, 0xfe, 0x0f, 0xff, 0x1f, 0xff, 0x1c, 0x00, 0xf0, 0x1e, 0x3f, 0xfe, 0x3f, 0xf0, 
+    0x77, 0x3b, 0x87, 0x00, 0x00, 0x07, 0x1c, 0x0f, 0x3c, 0x00, 0xe0, 0x1c, 0x7f, 0xfc, 0x38, 0x00, 
+    0x77, 0xfb, 0x8f, 0x00, 0x00, 0x07, 0x1c, 0x0f, 0x3c, 0x00, 0xe0, 0x1c, 0x7f, 0xf8, 0x38, 0x00, 
+    0x73, 0xf3, 0x8f, 0xff, 0x0f, 0xff, 0x1c, 0x0e, 0x3f, 0xf8, 0xff, 0xfc, 0x70, 0x78, 0x7f, 0xf8, 
+    0xe3, 0xe3, 0x8f, 0xff, 0x1f, 0xfe, 0x3c, 0x0e, 0x3f, 0xf8, 0xff, 0xfc, 0x70, 0x3c, 0x7f, 0xf8, 
+    0xe3, 0xe3, 0x8f, 0xff, 0x1f, 0xfc, 0x3c, 0x0e, 0x1f, 0xf8, 0xff, 0xf8, 0x70, 0x3c, 0x7f, 0xf8, 
+};
+
+void UITask::begin(NodePrefs* node_prefs, const char* build_date, const char* firmware_version) {
+  _prevBtnState = HIGH;
+  _auto_off = millis() + AUTO_OFF_MILLIS;
+  _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];
+  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);
+
+    // 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 = "< Sensor >";
+    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() {
+#ifdef PIN_USER_BTN
+  if (millis() >= _next_read) {
+    int btnState = digitalRead(PIN_USER_BTN);
+    if (btnState != _prevBtnState) {
+      if (btnState == LOW) {  // pressed?
+        if (_display->isOn()) {
+          // TODO: any action ?
+        } else {
+          _display->turnOn();
+        }
+        _auto_off = millis() + AUTO_OFF_MILLIS;   // extend auto-off timer
+      }
+      _prevBtnState = btnState;
+    }
+    _next_read = millis() + 200;  // 5 reads per second
+  }
+#endif
+
+  if (_display->isOn()) {
+    if (millis() >= _next_refresh) {
+      _display->startFrame();
+      renderCurrScreen();
+      _display->endFrame();
+
+      _next_refresh = millis() + 1000;   // refresh every second
+    }
+    if (millis() > _auto_off) {
+      _display->turnOff();
+    }
+  }
+}

examples/simple_sensor/UITask.h

@@ -0,0 +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;
+  NodePrefs* _node_prefs;
+  char _version_info[32];
+
+  void renderCurrScreen();
+public:
+  UITask(DisplayDriver& display) : _display(&display) { _next_read = _next_refresh = 0; }
+  void begin(NodePrefs* node_prefs, const char* build_date, const char* firmware_version);
+
+  void loop();
+};

examples/simple_sensor/main.cpp

@@ -0,0 +1,147 @@
+#include "SensorMesh.h"
+
+#ifdef DISPLAY_CLASS
+  #include "UITask.h"
+  static UITask ui_task(display);
+#endif
+
+class MyMesh : public SensorMesh {
+public:
+  MyMesh(mesh::MainBoard& board, mesh::Radio& radio, mesh::MillisecondClock& ms, mesh::RNG& rng, mesh::RTCClock& rtc, mesh::MeshTables& tables)
+     : SensorMesh(board, radio, ms, rng, rtc, tables), 
+       battery_data(12*24, 5*60)    // 24 hours worth of battery data, every 5 minutes
+  {
+  }
+
+protected:
+  /* ========================== custom logic here ========================== */
+  Trigger low_batt, critical_batt;
+  TimeSeriesData  battery_data;
+
+  void onSensorDataRead() override {
+    float batt_voltage = getVoltage(TELEM_CHANNEL_SELF);
+
+    battery_data.recordData(getRTCClock(), batt_voltage);   // record battery
+    alertIf(batt_voltage < 3.4f, critical_batt, HIGH_PRI_ALERT, "Battery is critical!");
+    alertIf(batt_voltage < 3.6f, low_batt, LOW_PRI_ALERT, "Battery is low");
+  }
+
+  int querySeriesData(uint32_t start_secs_ago, uint32_t end_secs_ago, MinMaxAvg dest[], int max_num) override {
+    battery_data.calcMinMaxAvg(getRTCClock(), start_secs_ago, end_secs_ago, &dest[0], TELEM_CHANNEL_SELF, LPP_VOLTAGE);
+    return 1;
+  }
+
+  bool handleCustomCommand(uint32_t sender_timestamp, char* command, char* reply) override {
+    if (strcmp(command, "magic") == 0) {    // example 'custom' command handling
+      strcpy(reply, "**Magic now done**");
+      return true;   // handled
+    }
+    return false;  // not handled
+  }
+  /* ======================================================================= */
+};
+
+StdRNG fast_rng;
+SimpleMeshTables tables;
+
+MyMesh the_mesh(board, radio_driver, *new ArduinoMillis(), fast_rng, rtc_clock, tables);
+
+void halt() {
+  while (1) ;
+}
+
+static char command[120];
+
+void setup() {
+  Serial.begin(115200);
+  delay(1000);
+
+  board.begin();
+
+#ifdef DISPLAY_CLASS
+  if (display.begin()) {
+    display.startFrame();
+    display.print("Please wait...");
+    display.endFrame();
+  }
+#endif
+
+  if (!radio_init()) { halt(); }
+
+  fast_rng.begin(radio_get_rng_seed());
+
+  FILESYSTEM* fs;
+#if defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
+  InternalFS.begin();
+  fs = &InternalFS;
+  IdentityStore store(InternalFS, "");
+#elif defined(ESP32)
+  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");
+    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);
+  }
+
+  Serial.print("Sensor ID: ");
+  mesh::Utils::printHex(Serial, the_mesh.self_id.pub_key, PUB_KEY_SIZE); Serial.println();
+
+  command[0] = 0;
+
+  sensors.begin();
+
+  the_mesh.begin(fs);
+
+#ifdef DISPLAY_CLASS
+  ui_task.begin(the_mesh.getNodePrefs(), FIRMWARE_BUILD_DATE, FIRMWARE_VERSION);
+#endif
+
+  // send out initial Advertisement to the mesh
+  the_mesh.sendSelfAdvertisement(16000);
+}
+
+void loop() {
+  int len = strlen(command);
+  while (Serial.available() && len < sizeof(command)-1) {
+    char c = Serial.read();
+    if (c != '\n') {
+      command[len++] = c;
+      command[len] = 0;
+    }
+    Serial.print(c);
+  }
+  if (len == sizeof(command)-1) {  // command buffer full
+    command[sizeof(command)-1] = '\r';
+  }
+
+  if (len > 0 && command[len - 1] == '\r') {  // received complete line
+    command[len - 1] = 0;  // replace newline with C string null terminator
+    char reply[160];
+    the_mesh.handleCommand(0, command, reply);  // NOTE: there is no sender_timestamp via serial!
+    if (reply[0]) {
+      Serial.print("  -> "); Serial.println(reply);
+    }
+
+    command[0] = 0;  // reset command buffer
+  }
+
+  the_mesh.loop();
+  sensors.loop();
+#ifdef DISPLAY_CLASS
+  ui_task.loop();
+#endif
+}

platformio.ini

@@ -29,9 +29,24 @@ build_flags = -w -DNDEBUG -DRADIOLIB_STATIC_ONLY=1 -DRADIOLIB_GODMODE=1
   -D LORA_SF=11
   -D ENABLE_PRIVATE_KEY_IMPORT=1   ; NOTE: comment these out for more secure firmware
   -D ENABLE_PRIVATE_KEY_EXPORT=1
+  -D RADIOLIB_EXCLUDE_CC1101=1
+  -D RADIOLIB_EXCLUDE_RF69=1
+  -D RADIOLIB_EXCLUDE_SX1231=1
+  -D RADIOLIB_EXCLUDE_SI443X=1
+  -D RADIOLIB_EXCLUDE_RFM2X=1
+  -D RADIOLIB_EXCLUDE_SX128X=1
+  -D RADIOLIB_EXCLUDE_AFSK=1
+  -D RADIOLIB_EXCLUDE_AX25=1
+  -D RADIOLIB_EXCLUDE_HELLSCHREIBER=1
+  -D RADIOLIB_EXCLUDE_MORSE=1
+  -D RADIOLIB_EXCLUDE_APRS=1
+  -D RADIOLIB_EXCLUDE_BELL=1
+  -D RADIOLIB_EXCLUDE_RTTY=1
+  -D RADIOLIB_EXCLUDE_SSTV=1
 build_src_filter =
   +<*.cpp>
   +<helpers/*.cpp>
+  +<helpers/radiolib/*.cpp>
 
 ; ----------------- ESP32 ---------------------
 
@@ -63,14 +78,6 @@ build_flags = ${arduino_base.build_flags}
   -D NRF52_PLATFORM
   -D LFS_NO_ASSERT=1
 
-[nrf52840_base]
-extends = nrf52_base
-build_flags = ${nrf52_base.build_flags}
-lib_deps =
-  ${nrf52_base.lib_deps}
-  rweather/Crypto @ ^0.4.0
-  https://github.com/adafruit/Adafruit_nRF52_Arduino
-
 ; ----------------- RP2040 ---------------------
 
 [rp2040_base]

src/Mesh.cpp

@@ -22,6 +22,9 @@ uint32_t Mesh::getRetransmitDelay(const mesh::Packet* packet) {
 uint32_t Mesh::getDirectRetransmitDelay(const Packet* packet) {
   return 0;  // by default, no delay
 }
+uint8_t Mesh::getExtraAckTransmitCount() const {
+  return 0;
+}
 
 uint32_t Mesh::getCADFailRetryDelay() const {
   return _rng->nextInt(1, 4)*120;
@@ -67,22 +70,22 @@ DispatcherAction Mesh::onRecvPacket(Packet* pkt) {
 
   if (pkt->isRouteDirect() && pkt->path_len >= PATH_HASH_SIZE) {
     if (self_id.isHashMatch(pkt->path) && allowPacketForward(pkt)) {
-      if (_tables->hasSeen(pkt)) return ACTION_RELEASE;  // don't retransmit!
-
-      // 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];
+      if (pkt->getPayloadType() == PAYLOAD_TYPE_MULTIPART) {
+        return forwardMultipartDirect(pkt);
+      } else if (pkt->getPayloadType() == PAYLOAD_TYPE_ACK) {
+        if (!_tables->hasSeen(pkt)) {  // don't retransmit!
+          removeSelfFromPath(pkt);
+          routeDirectRecvAcks(pkt, 0);
+        }
+        return ACTION_RELEASE;
       }
-  #else
-      #error "need path remove impl"
-  #endif
 
-      uint32_t d = getDirectRetransmitDelay(pkt);
-      return ACTION_RETRANSMIT_DELAYED(0, d);  // Routed traffic is HIGHEST priority 
+      if (!_tables->hasSeen(pkt)) {
+        removeSelfFromPath(pkt);
+
+        uint32_t d = getDirectRetransmitDelay(pkt);
+        return ACTION_RETRANSMIT_DELAYED(0, d);  // Routed traffic is HIGHEST priority 
+      }
     }
     return ACTION_RELEASE;   // this node is NOT the next hop (OR this packet has already been forwarded), so discard.
   }
@@ -135,7 +138,7 @@ 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)) {
@@ -181,7 +184,7 @@ DispatcherAction Mesh::onRecvPacket(Packet* pkt) {
           uint8_t data[MAX_PACKET_PAYLOAD];
           int len = Utils::MACThenDecrypt(secret, data, macAndData, pkt->payload_len - i);
           if (len > 0) {  // success!
-            onAnonDataRecv(pkt, pkt->getPayloadType(), sender, data, len);
+            onAnonDataRecv(pkt, secret, sender, data, len);
             pkt->markDoNotRetransmit();
           }
         }
@@ -261,6 +264,32 @@ DispatcherAction Mesh::onRecvPacket(Packet* pkt) {
       }
       break;
     }
+    case PAYLOAD_TYPE_MULTIPART:
+      if (pkt->payload_len > 2) {
+        uint8_t remaining = pkt->payload[0] >> 4;  // num of packets in this multipart sequence still to be sent
+        uint8_t type = pkt->payload[0] & 0x0F;
+
+        if (type == PAYLOAD_TYPE_ACK && pkt->payload_len >= 5) {    // a multipart ACK
+          Packet tmp;
+          tmp.header = pkt->header;
+          tmp.path_len = pkt->path_len;
+          memcpy(tmp.path, pkt->path, pkt->path_len);
+          tmp.payload_len = pkt->payload_len - 1;
+          memcpy(tmp.payload, &pkt->payload[1], tmp.payload_len);
+
+          if (!_tables->hasSeen(&tmp)) {
+            uint32_t ack_crc;
+            memcpy(&ack_crc, tmp.payload, 4);
+
+            onAckRecv(&tmp, ack_crc);
+            //action = routeRecvPacket(&tmp);  // NOTE: currently not needed, as multipart ACKs not sent Flood
+          }
+        } else {
+          // FUTURE: other multipart types??
+        }
+      }
+      break;
+
     default:
       MESH_DEBUG_PRINTLN("%s Mesh::onRecvPacket(): unknown payload type, header: %d", getLogDateTime(), (int) pkt->header);
       // Don't flood route unknown packet types!   action = routeRecvPacket(pkt);
@@ -269,6 +298,20 @@ DispatcherAction Mesh::onRecvPacket(Packet* pkt) {
   return action;
 }
 
+void Mesh::removeSelfFromPath(Packet* pkt) {
+  // remove our hash from 'path'
+  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
+}
+
 DispatcherAction Mesh::routeRecvPacket(Packet* packet) {
   if (packet->isRouteFlood() && !packet->isMarkedDoNotRetransmit()
     && packet->path_len + PATH_HASH_SIZE <= MAX_PATH_SIZE && allowPacketForward(packet)) {
@@ -282,6 +325,54 @@ DispatcherAction Mesh::routeRecvPacket(Packet* packet) {
   return ACTION_RELEASE;
 }
 
+DispatcherAction Mesh::forwardMultipartDirect(Packet* pkt) {
+  uint8_t remaining = pkt->payload[0] >> 4;  // num of packets in this multipart sequence still to be sent
+  uint8_t type = pkt->payload[0] & 0x0F;
+
+  if (type == PAYLOAD_TYPE_ACK && pkt->payload_len >= 5) {    // a multipart ACK
+    Packet tmp;
+    tmp.header = pkt->header;
+    tmp.path_len = pkt->path_len;
+    memcpy(tmp.path, pkt->path, pkt->path_len);
+    tmp.payload_len = pkt->payload_len - 1;
+    memcpy(tmp.payload, &pkt->payload[1], tmp.payload_len);
+
+    if (!_tables->hasSeen(&tmp)) {   // don't retransmit!
+      removeSelfFromPath(&tmp);
+      routeDirectRecvAcks(&tmp, ((uint32_t)remaining + 1) * 300);  // expect multipart ACKs 300ms apart (x2)
+    }
+  }
+  return ACTION_RELEASE;
+}
+
+void Mesh::routeDirectRecvAcks(Packet* packet, uint32_t delay_millis) {
+  if (!packet->isMarkedDoNotRetransmit()) {
+    uint32_t crc;
+    memcpy(&crc, packet->payload, 4);
+
+    uint8_t extra = getExtraAckTransmitCount();
+    while (extra > 0) {
+      delay_millis += getDirectRetransmitDelay(packet) + 300;
+      auto a1 = createMultiAck(crc, extra);
+      if (a1) {
+        memcpy(a1->path, packet->path, a1->path_len = packet->path_len);
+        a1->header &= ~PH_ROUTE_MASK;
+        a1->header |= ROUTE_TYPE_DIRECT;
+        sendPacket(a1, 0, delay_millis);
+      }
+      extra--;
+    }
+
+    auto a2 = createAck(crc);
+    if (a2) {
+      memcpy(a2->path, packet->path, a2->path_len = packet->path_len);
+      a2->header &= ~PH_ROUTE_MASK;
+      a2->header |= ROUTE_TYPE_DIRECT;
+      sendPacket(a2, 0, delay_millis);
+    }
+  }
+}
+
 Packet* Mesh::createAdvert(const LocalIdentity& id, const uint8_t* app_data, size_t app_data_len) {
   if (app_data_len > MAX_ADVERT_DATA_SIZE) return NULL;
 
@@ -449,6 +540,21 @@ Packet* Mesh::createAck(uint32_t ack_crc) {
   return packet;
 }
 
+Packet* Mesh::createMultiAck(uint32_t ack_crc, uint8_t remaining) {
+  Packet* packet = obtainNewPacket();
+  if (packet == NULL) {
+    MESH_DEBUG_PRINTLN("%s Mesh::createMultiAck(): error, packet pool empty", getLogDateTime());
+    return NULL;
+  }
+  packet->header = (PAYLOAD_TYPE_MULTIPART << PH_TYPE_SHIFT);  // ROUTE_TYPE_* set later
+
+  packet->payload[0] = (remaining << 4) | PAYLOAD_TYPE_ACK;
+  memcpy(&packet->payload[1], &ack_crc, 4);
+  packet->payload_len = 5;
+
+  return packet;
+}
+
 Packet* Mesh::createRawData(const uint8_t* data, size_t len) {
   if (len > sizeof(Packet::payload)) return NULL;  // invalid arg
 

src/Mesh.h

@@ -28,6 +28,11 @@ class Mesh : public Dispatcher {
   RNG* _rng;
   MeshTables* _tables;
 
+  void removeSelfFromPath(Packet* packet);
+  void routeDirectRecvAcks(Packet* packet, uint32_t delay_millis);
+  //void routeRecvAcks(Packet* packet, uint32_t delay_millis);
+  DispatcherAction forwardMultipartDirect(Packet* pkt);
+
 protected:
   DispatcherAction onRecvPacket(Packet* pkt) override;
 
@@ -54,6 +59,11 @@ protected:
    */
   virtual uint32_t getDirectRetransmitDelay(const Packet* packet);
 
+  /**
+   * \returns  number of extra (Direct) ACK transmissions wanted.
+   */
+  virtual uint8_t getExtraAckTransmitCount() const;
+
   /**
    * \brief  Perform search of local DB of peers/contacts.
    * \returns  Number of peers with matching hash
@@ -107,10 +117,10 @@ protected:
   /**
    * \brief  A (now decrypted) data packet has been received.
    *         NOTE: these can be received multiple times (per sender/contents), via different routes
-   * \param  type  one of: PAYLOAD_TYPE_ANON_REQ
+   * \param  secret  ECDH shared secret
    * \param  sender  public key provided by sender
   */
-  virtual void onAnonDataRecv(Packet* packet, uint8_t type, const Identity& sender, uint8_t* data, size_t len) { }
+  virtual void onAnonDataRecv(Packet* packet, const uint8_t* secret, const Identity& sender, uint8_t* data, size_t len) { }
 
   /**
    * \brief  A path TO 'sender' has been received. (also with optional 'extra' data encoded)
@@ -165,6 +175,7 @@ public:
   Packet* createAnonDatagram(uint8_t type, const LocalIdentity& sender, const Identity& dest, const uint8_t* secret, const uint8_t* data, size_t data_len);
   Packet* createGroupDatagram(uint8_t type, const GroupChannel& channel, const uint8_t* data, size_t data_len);
   Packet* createAck(uint32_t ack_crc);
+  Packet* createMultiAck(uint32_t ack_crc, uint8_t remaining);
   Packet* createPathReturn(const uint8_t* dest_hash, const uint8_t* secret, const uint8_t* path, uint8_t path_len, uint8_t extra_type, const uint8_t*extra, size_t extra_len);
   Packet* createPathReturn(const Identity& dest, const uint8_t* secret, const uint8_t* path, uint8_t path_len, uint8_t extra_type, const uint8_t*extra, size_t extra_len);
   Packet* createRawData(const uint8_t* data, size_t len);

src/Packet.h

@@ -26,6 +26,7 @@ namespace mesh {
 #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)
 #define PAYLOAD_TYPE_TRACE       0x09    // trace a path, collecting SNI for each hop
+#define PAYLOAD_TYPE_MULTIPART   0x0A    // packet is one of a set of packets
 //...
 #define PAYLOAD_TYPE_RAW_CUSTOM   0x0F    // custom packet as raw bytes, for applications with custom encryption, payloads, etc
 

src/helpers/AdvertDataHelpers.h

@@ -8,7 +8,8 @@
 #define ADV_TYPE_CHAT         1
 #define ADV_TYPE_REPEATER     2
 #define ADV_TYPE_ROOM         3
-//FUTURE: 4..15
+#define ADV_TYPE_SENSOR       4
+//FUTURE: 5..15
 
 #define ADV_LATLON_MASK       0x10
 #define ADV_FEAT1_MASK        0x20   // FUTURE

src/helpers/BaseChatMesh.cpp

@@ -31,6 +31,23 @@ mesh::Packet* BaseChatMesh::createSelfAdvert(const char* name, double lat, doubl
   return createAdvert(self_id, app_data, app_data_len);
 }
 
+void BaseChatMesh::sendAckTo(const ContactInfo& dest, uint32_t ack_hash) {
+  if (dest.out_path_len < 0) {
+    mesh::Packet* ack = createAck(ack_hash);
+    if (ack) sendFlood(ack, TXT_ACK_DELAY);
+  } else {
+    uint32_t d = TXT_ACK_DELAY;
+    if (getExtraAckTransmitCount() > 0) {
+      mesh::Packet* a1 = createMultiAck(ack_hash, 1);
+      if (a1) sendDirect(a1, dest.out_path, dest.out_path_len, d);
+      d += 300;
+    }
+
+    mesh::Packet* a2 = createAck(ack_hash);
+    if (a2) sendDirect(a2, dest.out_path, dest.out_path_len, d);
+  }
+}
+
 void BaseChatMesh::onAdvertRecv(mesh::Packet* packet, const mesh::Identity& id, uint32_t timestamp, const uint8_t* app_data, size_t app_data_len) {
   AdvertDataParser parser(app_data, app_data_len);
   if (!(parser.isValid() && parser.hasName())) {
@@ -152,14 +169,7 @@ void BaseChatMesh::onPeerDataRecv(mesh::Packet* packet, uint8_t type, int sender
                                                 PAYLOAD_TYPE_ACK, (uint8_t *) &ack_hash, 4);
         if (path) sendFlood(path, TXT_ACK_DELAY);
       } else {
-        mesh::Packet* ack = createAck(ack_hash);
-        if (ack) {
-          if (from.out_path_len < 0) {
-            sendFlood(ack, TXT_ACK_DELAY);
-          } else {
-            sendDirect(ack, from.out_path, from.out_path_len, TXT_ACK_DELAY);
-          }
-        }
+        sendAckTo(from, ack_hash);
       }
     } else if (flags == TXT_TYPE_CLI_DATA) {
       onCommandDataRecv(from, packet, timestamp, (const char *) &data[5]);  // let UI know
@@ -185,14 +195,7 @@ void BaseChatMesh::onPeerDataRecv(mesh::Packet* packet, uint8_t type, int sender
                                                 PAYLOAD_TYPE_ACK, (uint8_t *) &ack_hash, 4);
         if (path) sendFlood(path, TXT_ACK_DELAY);
       } else {
-        mesh::Packet* ack = createAck(ack_hash);
-        if (ack) {
-          if (from.out_path_len < 0) {
-            sendFlood(ack, TXT_ACK_DELAY);
-          } else {
-            sendDirect(ack, from.out_path, from.out_path_len, TXT_ACK_DELAY);
-          }
-        }
+        sendAckTo(from, ack_hash);
       }
     } else {
       MESH_DEBUG_PRINTLN("onPeerDataRecv: unsupported message type: %u", (uint32_t) flags);
@@ -403,22 +406,52 @@ bool BaseChatMesh::importContact(const uint8_t src_buf[], uint8_t len) {
 }
 
 int BaseChatMesh::sendLogin(const ContactInfo& recipient, const char* password, uint32_t& est_timeout) {
-  int tlen;
-  uint8_t temp[24];
-  uint32_t now = getRTCClock()->getCurrentTimeUnique();
-  memcpy(temp, &now, 4);   // mostly an extra blob to help make packet_hash unique
-  if (recipient.type == ADV_TYPE_ROOM) {
-    memcpy(&temp[4], &recipient.sync_since, 4);
-    int len = strlen(password); if (len > 15) len = 15;  // max 15 chars currently
-    memcpy(&temp[8], password, len);
-    tlen = 8 + len;
-  } else {
-    int len = strlen(password); if (len > 15) len = 15;  // max 15 chars currently
-    memcpy(&temp[4], password, len);
-    tlen = 4 + len;
-  }
+  mesh::Packet* pkt;
+  {
+    int tlen;
+    uint8_t temp[24];
+    uint32_t now = getRTCClock()->getCurrentTimeUnique();
+    memcpy(temp, &now, 4);   // mostly an extra blob to help make packet_hash unique
+    if (recipient.type == ADV_TYPE_ROOM) {
+      memcpy(&temp[4], &recipient.sync_since, 4);
+      int len = strlen(password); if (len > 15) len = 15;  // max 15 chars currently
+      memcpy(&temp[8], password, len);
+      tlen = 8 + len;
+    } else {
+      int len = strlen(password); if (len > 15) len = 15;  // max 15 chars currently
+      memcpy(&temp[4], password, len);
+      tlen = 4 + len;
+    }
 
-  auto pkt = createAnonDatagram(PAYLOAD_TYPE_ANON_REQ, self_id, recipient.id, recipient.shared_secret, temp, tlen);
+    pkt = createAnonDatagram(PAYLOAD_TYPE_ANON_REQ, self_id, recipient.id, recipient.shared_secret, temp, tlen);
+  }
+  if (pkt) {
+    uint32_t t = _radio->getEstAirtimeFor(pkt->getRawLength());
+    if (recipient.out_path_len < 0) {
+      sendFlood(pkt);
+      est_timeout = calcFloodTimeoutMillisFor(t);
+      return MSG_SEND_SENT_FLOOD;
+    } else {
+      sendDirect(pkt, recipient.out_path, recipient.out_path_len);
+      est_timeout = calcDirectTimeoutMillisFor(t, recipient.out_path_len);
+      return MSG_SEND_SENT_DIRECT;
+    }
+  }
+  return MSG_SEND_FAILED;
+}
+
+int  BaseChatMesh::sendRequest(const ContactInfo& recipient, const uint8_t* req_data, uint8_t data_len, uint32_t& tag, uint32_t& est_timeout) {
+  if (data_len > MAX_PACKET_PAYLOAD - 16) return MSG_SEND_FAILED;
+
+  mesh::Packet* pkt;
+  {
+    uint8_t temp[MAX_PACKET_PAYLOAD];
+    tag = getRTCClock()->getCurrentTimeUnique();
+    memcpy(temp, &tag, 4);   // mostly an extra blob to help make packet_hash unique
+    memcpy(&temp[4], req_data, data_len);
+
+    pkt = createDatagram(PAYLOAD_TYPE_REQ, recipient.id, recipient.shared_secret, temp, 4 + data_len);
+  }
   if (pkt) {
     uint32_t t = _radio->getEstAirtimeFor(pkt->getRawLength());
     if (recipient.out_path_len < 0) {
@@ -435,14 +468,17 @@ int BaseChatMesh::sendLogin(const ContactInfo& recipient, const char* password,
 }
 
 int  BaseChatMesh::sendRequest(const ContactInfo& recipient, uint8_t req_type, uint32_t& tag, uint32_t& est_timeout) {
-  uint8_t temp[13];
-  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
+  mesh::Packet* pkt;
+  {
+    uint8_t temp[13];
+    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));
+    pkt = createDatagram(PAYLOAD_TYPE_REQ, recipient.id, recipient.shared_secret, temp, sizeof(temp));
+  }
   if (pkt) {
     uint32_t t = _radio->getEstAirtimeFor(pkt->getRawLength());
     if (recipient.out_path_len < 0) {

src/helpers/BaseChatMesh.h

@@ -72,6 +72,7 @@ class BaseChatMesh : public mesh::Mesh {
   ConnectionInfo connections[MAX_CONNECTIONS];
 
   mesh::Packet* composeMsgPacket(const ContactInfo& recipient, uint32_t timestamp, uint8_t attempt, const char *text, uint32_t& expected_ack);
+  void sendAckTo(const ContactInfo& dest, uint32_t ack_hash);
 
 protected:
   BaseChatMesh(mesh::Radio& radio, mesh::MillisecondClock& ms, mesh::RNG& rng, mesh::RTCClock& rtc, mesh::PacketManager& mgr, mesh::MeshTables& tables)
@@ -134,6 +135,7 @@ public:
   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  sendRequest(const ContactInfo& recipient, uint8_t req_type, uint32_t& tag, uint32_t& est_timeout);
+  int  sendRequest(const ContactInfo& recipient, const uint8_t* req_data, uint8_t data_len, 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);

src/helpers/CommonCLI.cpp

@@ -51,7 +51,7 @@ void CommonCLI::loadPrefsInt(FILESYSTEM* fs, const char* filename) {
     file.read((uint8_t *) &_prefs->sf, sizeof(_prefs->sf));  // 112
     file.read((uint8_t *) &_prefs->cr, sizeof(_prefs->cr));  // 113
     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->multi_acks, sizeof(_prefs->multi_acks));  // 115
     file.read((uint8_t *) &_prefs->bw, sizeof(_prefs->bw));  // 116
     file.read((uint8_t *) &_prefs->agc_reset_interval, sizeof(_prefs->agc_reset_interval));  // 120
     file.read(pad, 3);   // 121
@@ -69,6 +69,7 @@ void CommonCLI::loadPrefsInt(FILESYSTEM* fs, const char* filename) {
     _prefs->sf = constrain(_prefs->sf, 7, 12);
     _prefs->cr = constrain(_prefs->cr, 5, 8);
     _prefs->tx_power_dbm = constrain(_prefs->tx_power_dbm, 1, 30);
+    _prefs->multi_acks = constrain(_prefs->multi_acks, 0, 1);
 
     file.close();
   }
@@ -106,7 +107,7 @@ void CommonCLI::savePrefs(FILESYSTEM* fs) {
     file.write((uint8_t *) &_prefs->sf, sizeof(_prefs->sf));  // 112
     file.write((uint8_t *) &_prefs->cr, sizeof(_prefs->cr));  // 113
     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->multi_acks, sizeof(_prefs->multi_acks));  // 115
     file.write((uint8_t *) &_prefs->bw, sizeof(_prefs->bw));  // 116
     file.write((uint8_t *) &_prefs->agc_reset_interval, sizeof(_prefs->agc_reset_interval));  // 120
     file.write(pad, 3);   // 121
@@ -120,25 +121,18 @@ void CommonCLI::savePrefs(FILESYSTEM* fs) {
 
 #define MIN_LOCAL_ADVERT_INTERVAL   60
 
-void CommonCLI::checkAdvertInterval() {
+void CommonCLI::savePrefs() {
   if (_prefs->advert_interval * 2 < MIN_LOCAL_ADVERT_INTERVAL) {
     _prefs->advert_interval = 0;  // turn it off, now that device has been manually configured
   }
+  _callbacks->savePrefs();
 }
 
 void CommonCLI::handleCommand(uint32_t sender_timestamp, const char* command, char* reply) {
-    while (*command == ' ') command++;   // skip leading spaces
-
-    if (strlen(command) > 4 && command[2] == '|') {  // optional prefix (for companion radio CLI)
-      memcpy(reply, command, 3);  // reflect the prefix back
-      reply += 3;
-      command += 3;
-    }
-
     if (memcmp(command, "reboot", 6) == 0) {
       _board->reboot();  // doesn't return
     } else if (memcmp(command, "advert", 6) == 0) {
-      _callbacks->sendSelfAdvertisement(400);
+      _callbacks->sendSelfAdvertisement(1500);  // longer delay, give CLI response time to be sent first
       strcpy(reply, "OK - Advert sent");
     } else if (memcmp(command, "clock sync", 10) == 0) {
       uint32_t curr = getRTCClock()->getCurrentTime();
@@ -171,10 +165,24 @@ void CommonCLI::handleCommand(uint32_t sender_timestamp, const char* command, ch
       }
     } else if (memcmp(command, "neighbors", 9) == 0) {
       _callbacks->formatNeighborsReply(reply);
+    } else if (memcmp(command, "tempradio ", 10) == 0) {
+      strcpy(tmp, &command[10]);
+      const char *parts[5];
+      int num = mesh::Utils::parseTextParts(tmp, parts, 5);
+      float freq  = num > 0 ? atof(parts[0]) : 0.0f;
+      float bw    = num > 1 ? atof(parts[1]) : 0.0f;
+      uint8_t sf  = num > 2 ? atoi(parts[2]) : 0;
+      uint8_t cr  = num > 3 ? atoi(parts[3]) : 0;
+      int temp_timeout_mins  = num > 4 ? atoi(parts[4]) : 0;
+      if (freq >= 300.0f && freq <= 2500.0f && sf >= 7 && sf <= 12 && cr >= 5 && cr <= 8 && bw >= 7.0f && bw <= 500.0f && temp_timeout_mins > 0) {
+        _callbacks->applyTempRadioParams(freq, bw, sf, cr, temp_timeout_mins);
+        sprintf(reply, "OK - temp params for %d mins", temp_timeout_mins);
+      } else {
+        strcpy(reply, "Error, invalid params");
+      }
     } 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) {
@@ -188,6 +196,8 @@ void CommonCLI::handleCommand(uint32_t sender_timestamp, const char* command, ch
         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, "multi.acks", 10) == 0) {
+        sprintf(reply, "> %d", (uint32_t) _prefs->multi_acks);
       } 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) {
@@ -243,6 +253,10 @@ void CommonCLI::handleCommand(uint32_t sender_timestamp, const char* command, ch
         _prefs->agc_reset_interval = atoi(&config[19]) / 4;
         savePrefs();
         strcpy(reply, "OK");
+      } else if (memcmp(config, "multi.acks ", 11) == 0) {
+        _prefs->multi_acks = atoi(&config[11]);
+        savePrefs();
+        strcpy(reply, "OK");
       } else if (memcmp(config, "allow.read.only ", 16) == 0) {
         _prefs->allow_read_only = memcmp(&config[16], "on", 2) == 0;
         savePrefs();
@@ -273,7 +287,6 @@ void CommonCLI::handleCommand(uint32_t sender_timestamp, const char* command, ch
         strcpy(reply, "OK");
       } else if (memcmp(config, "name ", 5) == 0) {
         StrHelper::strncpy(_prefs->node_name, &config[5], sizeof(_prefs->node_name));
-        checkAdvertInterval();
         savePrefs();
         strcpy(reply, "OK");
       } else if (memcmp(config, "repeat ", 7) == 0) {
@@ -300,12 +313,10 @@ void CommonCLI::handleCommand(uint32_t sender_timestamp, const char* command, ch
         }
       } else if (memcmp(config, "lat ", 4) == 0) {
         _prefs->node_lat = atof(&config[4]);
-        checkAdvertInterval();
         savePrefs();
         strcpy(reply, "OK");
       } else if (memcmp(config, "lon ", 4) == 0) {
         _prefs->node_lon = atof(&config[4]);
-        checkAdvertInterval();
         savePrefs();
         strcpy(reply, "OK");
       } else if (memcmp(config, "rxdelay ", 8) == 0) {

src/helpers/CommonCLI.h

@@ -21,7 +21,7 @@ struct NodePrefs {  // persisted to file
     uint8_t sf;
     uint8_t cr;
     uint8_t allow_read_only;
-    uint8_t reserved2;
+    uint8_t multi_acks;
     float bw;
     uint8_t flood_max;
     uint8_t interference_threshold;
@@ -45,6 +45,7 @@ public:
   virtual void formatNeighborsReply(char *reply) = 0;
   virtual const uint8_t* getSelfIdPubKey() = 0;
   virtual void clearStats() = 0;
+  virtual void applyTempRadioParams(float freq, float bw, uint8_t sf, uint8_t cr, int timeout_mins) = 0;
 };
 
 class CommonCLI {
@@ -55,10 +56,7 @@ class CommonCLI {
   char tmp[80];
 
   mesh::RTCClock* getRTCClock() { return _rtc; }
-  void savePrefs() { _callbacks->savePrefs(); }
-
-  void checkAdvertInterval();
-
+  void savePrefs();
   void loadPrefsInt(FILESYSTEM* _fs, const char* filename);
 
 public:

src/helpers/CustomLR1110.h

@@ -1,17 +0,0 @@
-#pragma once
-
-#include <RadioLib.h>
-
-#define LR1110_IRQ_HAS_PREAMBLE                     0b0000000100  //  4     4     valid LoRa header received
-#define LR1110_IRQ_HEADER_VALID                     0b0000010000  //  4     4     valid LoRa header received
-
-class CustomLR1110 : public LR1110 {
-  public:
-    CustomLR1110(Module *mod) : LR1110(mod) { }
-
-    bool isReceiving() {
-      uint16_t irq = getIrqStatus();
-      bool detected = ((irq & LR1110_IRQ_HEADER_VALID) || (irq & LR1110_IRQ_HAS_PREAMBLE));
-      return detected;
-    }
-};

src/helpers/HeltecV3Board.h

@@ -4,7 +4,7 @@
 #include <helpers/RefCountedDigitalPin.h>
 
 // LoRa radio module pins for Heltec V3
-// Also for Heltec Wireless Tracker
+// Also for Heltec Wireless Tracker/Paper
 #define  P_LORA_DIO_1   14
 #define  P_LORA_NSS      8
 #define  P_LORA_RESET   RADIOLIB_NC
@@ -14,7 +14,9 @@
 #define  P_LORA_MOSI    10
 
 // built-ins
-#define  PIN_VBAT_READ    1
+#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

src/helpers/MeshadventurerBoard.h

@@ -0,0 +1,81 @@
+#pragma once
+
+#include <Arduino.h>
+
+// LoRa radio module pins for Meshadventurer
+#define  P_LORA_DIO_1   33
+#define  P_LORA_NSS     18
+#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
+
+#define  PIN_VBAT_READ    35
+
+#include "ESP32Board.h"
+
+#include <driver/rtc_io.h>
+
+class MeshadventurerBoard : public ESP32Board {
+
+public:
+  void begin() {
+    ESP32Board::begin();
+
+    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);
+    }
+  }
+
+  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 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);
+
+    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!
+  }
+
+  void powerOff() override {
+    // TODO: re-enable this when there is a definite wake-up source pin:
+    //  enterDeepSleep(0);
+  }
+
+  uint16_t getBattMilliVolts() override {
+    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 "Meshadventurer";
+  }
+};

src/helpers/nrf52/SerialBLEInterface.cpp

@@ -1,6 +1,27 @@
 #include "SerialBLEInterface.h"
 
+static SerialBLEInterface* instance;
+
+void SerialBLEInterface::onConnect(uint16_t connection_handle) {
+  BLE_DEBUG_PRINTLN("SerialBLEInterface: connected");
+  if(instance){
+    instance->_isDeviceConnected = true;
+    // no need to stop advertising on connect, as the ble stack does this automatically
+  }
+}
+
+void SerialBLEInterface::onDisconnect(uint16_t connection_handle, uint8_t reason) {
+  BLE_DEBUG_PRINTLN("SerialBLEInterface: disconnected reason=%d", reason);
+  if(instance){
+    instance->_isDeviceConnected = false;
+    instance->startAdv();
+  }
+}
+
 void SerialBLEInterface::begin(const char* device_name, uint32_t pin_code) {
+
+  instance = this;
+
   char charpin[20];
   sprintf(charpin, "%d", pin_code);
 
@@ -13,11 +34,31 @@ void SerialBLEInterface::begin(const char* device_name, uint32_t pin_code) {
   Bluefruit.Security.setMITM(true);
   Bluefruit.Security.setPIN(charpin);
 
+  Bluefruit.Periph.setConnectCallback(onConnect);
+  Bluefruit.Periph.setDisconnectCallback(onDisconnect);
+
   // To be consistent OTA DFU should be added first if it exists
   //bledfu.begin();
+
+  // Configure and start the BLE Uart service
+  bleuart.setPermission(SECMODE_ENC_WITH_MITM, SECMODE_ENC_WITH_MITM);
+  bleuart.begin();
+  
 }
 
 void SerialBLEInterface::startAdv() {
+
+  BLE_DEBUG_PRINTLN("SerialBLEInterface: starting advertising");
+  
+  // clean restart if already advertising
+  if(Bluefruit.Advertising.isRunning()){
+    BLE_DEBUG_PRINTLN("SerialBLEInterface: already advertising, stopping to allow clean restart");
+    Bluefruit.Advertising.stop();
+  }
+
+  Bluefruit.Advertising.clearData(); // clear advertising data
+  Bluefruit.ScanResponse.clearData(); // clear scan response data
+  
   // Advertising packet
   Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
   Bluefruit.Advertising.addTxPower();
@@ -38,10 +79,25 @@ void SerialBLEInterface::startAdv() {
    * For recommended advertising interval
    * https://developer.apple.com/library/content/qa/qa1931/_index.html   
    */
-  Bluefruit.Advertising.restartOnDisconnect(true);
+  Bluefruit.Advertising.restartOnDisconnect(false); // don't restart automatically as we handle it in onDisconnect
   Bluefruit.Advertising.setInterval(32, 244);    // in unit of 0.625 ms
   Bluefruit.Advertising.setFastTimeout(30);      // number of seconds in fast mode
-  Bluefruit.Advertising.start(0);                // 0 = Don't stop advertising after n seconds 
+  Bluefruit.Advertising.start(0);                // 0 = Don't stop advertising after n seconds
+
+}
+
+void SerialBLEInterface::stopAdv() {
+
+  BLE_DEBUG_PRINTLN("SerialBLEInterface: stopping advertising");
+  
+  // we only want to stop advertising if it's running, otherwise an invalid state error is logged by ble stack
+  if(!Bluefruit.Advertising.isRunning()){
+    return;
+  }
+
+  // stop advertising
+  Bluefruit.Advertising.stop();
+
 }
 
 // ---------- public methods
@@ -52,25 +108,14 @@ void SerialBLEInterface::enable() {
   _isEnabled = true;
   clearBuffers();
 
-  // Configure and start the BLE Uart service
-  bleuart.setPermission(SECMODE_ENC_WITH_MITM, SECMODE_ENC_WITH_MITM);
-  bleuart.begin();
-
   // Start advertising
   startAdv();
-
-  checkAdvRestart = false;
 }
 
 void SerialBLEInterface::disable() {
   _isEnabled = false;
-
   BLE_DEBUG_PRINTLN("SerialBLEInterface::disable");
-
-  Bluefruit.Advertising.stop();
-
-  oldDeviceConnected = deviceConnected = false;
-  checkAdvRestart = false;
+  stopAdv();
 }
 
 size_t SerialBLEInterface::writeFrame(const uint8_t src[], size_t len) {
@@ -79,7 +124,7 @@ size_t SerialBLEInterface::writeFrame(const uint8_t src[], size_t len) {
     return 0;
   }
 
-  if (deviceConnected && len > 0) {
+  if (_isDeviceConnected && len > 0) {
     if (send_queue_len >= FRAME_QUEUE_SIZE) {
       BLE_DEBUG_PRINTLN("writeFrame(), send_queue is full!");
       return 0;
@@ -115,44 +160,14 @@ size_t SerialBLEInterface::checkRecvFrame(uint8_t dest[]) {
   } else {
     int len = bleuart.available();
     if (len > 0) {
-      deviceConnected = true; // should probably use the callback to monitor cx 
       bleuart.readBytes(dest, len);
       BLE_DEBUG_PRINTLN("readBytes: sz=%d, hdr=%d", len, (uint32_t) dest[0]);
       return len;
     }
   }
-
-  if (Bluefruit.connected() == 0)  deviceConnected = false;
-
-  if (deviceConnected != oldDeviceConnected) {
-    if (!deviceConnected) {    // disconnecting
-      clearBuffers();
-
-      BLE_DEBUG_PRINTLN("SerialBLEInterface -> disconnecting...");
-      delay(500); // give the bluetooth stack the chance to get things ready
-
-      checkAdvRestart = true;
-    } else {
-      BLE_DEBUG_PRINTLN("SerialBLEInterface -> stopping advertising");
-      BLE_DEBUG_PRINTLN("SerialBLEInterface -> connecting...");
-      // connecting
-      // do stuff here on connecting
-      Bluefruit.Advertising.stop();
-      checkAdvRestart = false;
-    }
-    oldDeviceConnected = deviceConnected;
-  }
-
-  if (checkAdvRestart) {
-    if (Bluefruit.connected() == 0) {
-      BLE_DEBUG_PRINTLN("SerialBLEInterface -> re-starting advertising");
-      startAdv();
-    }
-    checkAdvRestart = false;
-  }
   return 0;
 }
 
 bool SerialBLEInterface::isConnected() const {
-  return deviceConnected;  //pServer != NULL && pServer->getConnectedCount() > 0;
+  return _isDeviceConnected;
 }

src/helpers/nrf52/SerialBLEInterface.h

@@ -5,10 +5,8 @@
 
 class SerialBLEInterface : public BaseSerialInterface {
   BLEUart bleuart;
-  bool deviceConnected;
-  bool oldDeviceConnected;
-  bool checkAdvRestart;
   bool _isEnabled;
+  bool _isDeviceConnected;
   unsigned long _last_write;
 
   struct Frame {
@@ -21,18 +19,19 @@ class SerialBLEInterface : public BaseSerialInterface {
   Frame send_queue[FRAME_QUEUE_SIZE];
 
   void clearBuffers() { send_queue_len = 0; }
-  void startAdv();
+  static void onConnect(uint16_t connection_handle);
+  static void onDisconnect(uint16_t connection_handle, uint8_t reason);
 
 public:
   SerialBLEInterface() {
-    deviceConnected = false;
-    oldDeviceConnected = false;
-    checkAdvRestart = false;
     _isEnabled = false;
+    _isDeviceConnected = false;
     _last_write = 0;
     send_queue_len = 0;
   }
 
+  void startAdv();
+  void stopAdv();
   void begin(const char* device_name, uint32_t pin_code);
 
   // BaseSerialInterface methods

src/helpers/radiolib/CustomLR1110.h

@@ -0,0 +1,70 @@
+#pragma once
+
+#include <RadioLib.h>
+
+#define LR1110_IRQ_HAS_PREAMBLE                     0b0000000100  //  4     4     valid LoRa header received
+#define LR1110_IRQ_HEADER_VALID                     0b0000010000  //  4     4     valid LoRa header received
+
+class CustomLR1110 : public LR1110 {
+  public:
+    CustomLR1110(Module *mod) : LR1110(mod) { }
+
+    RadioLibTime_t getTimeOnAir(size_t len) override {
+  // calculate number of symbols
+  float N_symbol = 0;
+  if(this->codingRate <= RADIOLIB_LR11X0_LORA_CR_4_8_SHORT) {
+    // legacy coding rate - nice and simple
+    // get SF coefficients
+    float coeff1 = 0;
+    int16_t coeff2 = 0;
+    int16_t coeff3 = 0;
+    if(this->spreadingFactor < 7) {
+      // SF5, SF6
+      coeff1 = 6.25;
+      coeff2 = 4*this->spreadingFactor;
+      coeff3 = 4*this->spreadingFactor;
+    } else if(this->spreadingFactor < 11) {
+      // SF7. SF8, SF9, SF10
+      coeff1 = 4.25;
+      coeff2 = 4*this->spreadingFactor + 8;
+      coeff3 = 4*this->spreadingFactor;
+    } else {
+      // SF11, SF12
+      coeff1 = 4.25;
+      coeff2 = 4*this->spreadingFactor + 8;
+      coeff3 = 4*(this->spreadingFactor - 2);
+    }
+
+    // get CRC length
+    int16_t N_bitCRC = 16;
+    if(this->crcTypeLoRa == RADIOLIB_LR11X0_LORA_CRC_DISABLED) {
+      N_bitCRC = 0;
+    }
+
+    // get header length
+    int16_t N_symbolHeader = 20;
+    if(this->headerType == RADIOLIB_LR11X0_LORA_HEADER_IMPLICIT) {
+      N_symbolHeader = 0;
+    }
+
+    // calculate number of LoRa preamble symbols - NO! Lora preamble is already in symbols
+    // uint32_t N_symbolPreamble = (this->preambleLengthLoRa & 0x0F) * (uint32_t(1) << ((this->preambleLengthLoRa & 0xF0) >> 4));
+
+    // calculate the number of symbols - nope
+    // N_symbol = (float)N_symbolPreamble + coeff1 + 8.0f + ceilf((float)RADIOLIB_MAX((int16_t)(8 * len + N_bitCRC - coeff2 + N_symbolHeader), (int16_t)0) / (float)coeff3) * (float)(this->codingRate + 4);
+    // calculate the number of symbols - using only preamblelora because it's already in symbols
+    N_symbol = (float)preambleLengthLoRa + coeff1 + 8.0f + ceilf((float)RADIOLIB_MAX((int16_t)(8 * len + N_bitCRC - coeff2 + N_symbolHeader), (int16_t)0) / (float)coeff3) * (float)(this->codingRate + 4);
+  } else {
+    // long interleaving - not needed for this modem
+  }
+
+  // get time-on-air in us
+  return(((uint32_t(1) << this->spreadingFactor) / this->bandwidthKhz) * N_symbol * 1000.0f);
+}
+
+    bool isReceiving() {
+      uint16_t irq = getIrqStatus();
+      bool detected = ((irq & LR1110_IRQ_HEADER_VALID) || (irq & LR1110_IRQ_HAS_PREAMBLE));
+      return detected;
+    }
+};

src/helpers/radiolib/CustomLR1110Wrapper.h

@@ -17,7 +17,7 @@ public:
 
   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(); }

src/helpers/radiolib/RadioLibWrappers.cpp

@@ -96,8 +96,9 @@ bool RadioLibWrapper::isInRecvMode() const {
 }
 
 int RadioLibWrapper::recvRaw(uint8_t* bytes, int sz) {
+  int len = 0;
   if (state & STATE_INT_READY) {
-    int len = _radio->getPacketLength();
+    len = _radio->getPacketLength();
     if (len > 0) {
       if (len > sz) { len = sz; }
       int err = _radio->readData(bytes, len);
@@ -110,7 +111,6 @@ int RadioLibWrapper::recvRaw(uint8_t* bytes, int sz) {
       }
     }
     state = STATE_IDLE;   // need another startReceive()
-    return len;
   }
 
   if (state != STATE_RX) {
@@ -121,7 +121,7 @@ int RadioLibWrapper::recvRaw(uint8_t* bytes, int sz) {
       MESH_DEBUG_PRINTLN("RadioLibWrapper: error: startReceive(%d)", err);
     }
   }
-  return 0;
+  return len;
 }
 
 uint32_t RadioLibWrapper::getEstAirtimeFor(int len_bytes) {

src/helpers/rp2040/XiaoRP2040Board.cpp

@@ -0,0 +1,30 @@
+#include "XiaoRP2040Board.h"
+
+#include <Arduino.h>
+#include <Wire.h>
+
+void XiaoRP2040Board::begin() {
+  // for future use, sub-classes SHOULD call this from their begin()
+  startup_reason = BD_STARTUP_NORMAL;
+
+#ifdef P_LORA_TX_LED
+  pinMode(P_LORA_TX_LED, OUTPUT);
+#endif
+
+#ifdef PIN_VBAT_READ
+  pinMode(PIN_VBAT_READ, INPUT);
+#endif
+
+#if defined(PIN_BOARD_SDA) && defined(PIN_BOARD_SCL)
+  Wire.setSDA(PIN_BOARD_SDA);
+  Wire.setSCL(PIN_BOARD_SCL);
+#endif
+
+  Wire.begin();
+
+  delay(10); // give sx1262 some time to power up
+}
+
+bool XiaoRP2040Board::startOTAUpdate(const char *id, char reply[]) {
+  return false;
+}

src/helpers/rp2040/XiaoRP2040Board.h

@@ -0,0 +1,75 @@
+#pragma once
+
+#include <Arduino.h>
+#include <MeshCore.h>
+
+// LoRa radio module pins for the Xiao RP2040
+// https://wiki.seeedstudio.com/XIAO-RP2040/
+
+#define P_LORA_DIO_1      27 // D1
+#define P_LORA_NSS        6  // D4
+#define P_LORA_RESET      28 // D2
+#define P_LORA_BUSY       29 // D3
+#define P_LORA_TX_LED     17
+
+#define SX126X_RXEN       7  // D5
+#define SX126X_TXEN       -1
+
+#define SX126X_DIO2_AS_RF_SWITCH true
+#define SX126X_DIO3_TCXO_VOLTAGE 1.8
+
+/*
+ * This board has no built-in way to read battery voltage.
+ * Nevertheless it's very easy to make it work, you only require two 1% resistors.
+ * If your using the WIO SX1262 Addon for xaio, make sure you dont connect D0!
+ *
+ *    BAT+ -----+
+ *              |
+ *       VSYS --+ -/\/\/\/\- --+
+ *                   200k      |
+ *                             +-- D0
+ *                             |
+ *        GND --+ -/\/\/\/\- --+
+ *              |    100k
+ *    BAT- -----+
+ */
+#define PIN_VBAT_READ     26 // D0
+#define BATTERY_SAMPLES   8
+#define ADC_MULTIPLIER    (3.0f * 3.3f * 1000)
+
+class XiaoRP2040Board : public mesh::MainBoard {
+protected:
+  uint8_t startup_reason;
+
+public:
+  void begin();
+  uint8_t getStartupReason() const override { return startup_reason; }
+
+#ifdef P_LORA_TX_LED
+  void onBeforeTransmit() override { digitalWrite(P_LORA_TX_LED, HIGH); }
+  void onAfterTransmit() override { digitalWrite(P_LORA_TX_LED, LOW); }
+#endif
+
+
+  uint16_t getBattMilliVolts() override {
+#if defined(PIN_VBAT_READ) && defined(ADC_MULTIPLIER)
+    analogReadResolution(12);
+
+    uint32_t raw = 0;
+    for (int i = 0; i < BATTERY_SAMPLES; i++) {
+      raw += analogRead(PIN_VBAT_READ);
+    }
+    raw = raw / BATTERY_SAMPLES;
+
+    return (ADC_MULTIPLIER * raw) / 4096;
+#else
+    return 0;
+#endif
+  }
+
+  const char *getManufacturerName() const override { return "Xiao RP2040"; }
+
+  void reboot() override { rp2040.reboot(); }
+
+  bool startOTAUpdate(const char *id, char reply[]) override;
+};

src/helpers/sensors/EnvironmentSensorManager.cpp

@@ -1,5 +1,11 @@
 #include "EnvironmentSensorManager.h"
 
+#if ENV_PIN_SDA && ENV_PIN_SCL
+#define TELEM_WIRE &Wire1  // Use Wire1 as the I2C bus for Environment Sensors
+#else
+#define TELEM_WIRE &Wire  // Use default I2C bus for Environment Sensors
+#endif
+
 #if ENV_INCLUDE_AHTX0
 #define TELEM_AHTX_ADDRESS      0x38      // AHT10, AHT20 temperature and humidity sensor I2C address
 #include <Adafruit_AHTX0.h>
@@ -24,6 +30,14 @@ static Adafruit_BME280 BME280;
 static Adafruit_BMP280 BMP280;
 #endif
 
+#if ENV_INCLUDE_SHTC3
+#include <Adafruit_SHTC3.h>
+static Adafruit_SHTC3 SHTC3;
+#endif
+
+#if ENV_INCLUDE_LPS22HB
+#include <Arduino_LPS22HB.h>
+#endif
 
 #if ENV_INCLUDE_INA3221
 #define TELEM_INA3221_ADDRESS   0x42      // INA3221 3 channel current sensor I2C address
@@ -39,13 +53,43 @@ static Adafruit_INA3221 INA3221;
 static Adafruit_INA219 INA219(TELEM_INA219_ADDRESS);
 #endif
 
+#if ENV_INCLUDE_MLX90614
+#define TELEM_MLX90614_ADDRESS 0x5A      // MLX90614 IR temperature sensor I2C address
+#include <Adafruit_MLX90614.h>
+static Adafruit_MLX90614 MLX90614;
+#endif
+
+#if ENV_INCLUDE_VL53L0X
+#define TELEM_VL53L0X_ADDRESS 0x29      // VL53L0X time-of-flight distance sensor I2C address
+#include <Adafruit_VL53L0X.h>
+static Adafruit_VL53L0X VL53L0X;
+#endif
+
+#if ENV_INCLUDE_GPS && RAK_BOARD
+static uint32_t gpsResetPin = 0;
+static bool i2cGPSFlag = false;
+static bool serialGPSFlag = false;
+#define TELEM_RAK12500_ADDRESS   0x42     //RAK12500 Ublox GPS via i2c
+#include <SparkFun_u-blox_GNSS_Arduino_Library.h>
+static SFE_UBLOX_GNSS ublox_GNSS;
+#endif
+
 bool EnvironmentSensorManager::begin() {
   #if ENV_INCLUDE_GPS
+  #if RAK_BOARD
+  rakGPSInit();   //probe base board/sockets for GPS
+  #else
   initBasicGPS();
   #endif
+  #endif
+
+  #if ENV_PIN_SDA && ENV_PIN_SCL
+  Wire1.begin(ENV_PIN_SDA, ENV_PIN_SCL, 100000);
+  MESH_DEBUG_PRINTLN("Second I2C initialized on pins SDA: %d SCL: %d", ENV_PIN_SDA, ENV_PIN_SCL);
+  #endif
 
   #if ENV_INCLUDE_AHTX0
-  if (AHTX0.begin(&Wire, 0, TELEM_AHTX_ADDRESS)) {
+  if (AHTX0.begin(TELEM_WIRE, 0, TELEM_AHTX_ADDRESS)) {
     MESH_DEBUG_PRINTLN("Found AHT10/AHT20 at address: %02X", TELEM_AHTX_ADDRESS);
     AHTX0_initialized = true;
   } else {
@@ -55,7 +99,7 @@ bool EnvironmentSensorManager::begin() {
   #endif
 
   #if ENV_INCLUDE_BME280
-  if (BME280.begin(TELEM_BME280_ADDRESS, &Wire)) {
+  if (BME280.begin(TELEM_BME280_ADDRESS, TELEM_WIRE)) {
     MESH_DEBUG_PRINTLN("Found BME280 at address: %02X", TELEM_BME280_ADDRESS);
     MESH_DEBUG_PRINTLN("BME sensor ID: %02X", BME280.sensorID());
     BME280_initialized = true;
@@ -76,28 +120,68 @@ bool EnvironmentSensorManager::begin() {
   }
   #endif
 
-  #if ENV_INCLUDE_INA3221
-  if (INA3221.begin(TELEM_INA3221_ADDRESS, &Wire)) {
-      MESH_DEBUG_PRINTLN("Found INA3221 at address: %02X", TELEM_INA3221_ADDRESS);
-      MESH_DEBUG_PRINTLN("%04X %04X", INA3221.getDieID(), INA3221.getManufacturerID());
-
-      for(int i = 0; i < 3; i++) {
-        INA3221.setShuntResistance(i, TELEM_INA3221_SHUNT_VALUE);
-      }
-      INA3221_initialized = true;
+  #if ENV_INCLUDE_SHTC3
+  if (SHTC3.begin()) {
+    MESH_DEBUG_PRINTLN("Found sensor: SHTC3");
+    SHTC3_initialized = true;
   } else {
-      INA3221_initialized = false;
-      MESH_DEBUG_PRINTLN("INA3221 was not found at I2C address %02X", TELEM_INA3221_ADDRESS);
+    SHTC3_initialized = false;
+    MESH_DEBUG_PRINTLN("SHTC3 was not found at I2C address %02X", 0x70);
+  }
+  #endif
+
+  #if ENV_INCLUDE_LPS22HB
+  if (BARO.begin()) {
+    MESH_DEBUG_PRINTLN("Found sensor: LPS22HB");
+    LPS22HB_initialized = true;
+  } else {
+    LPS22HB_initialized = false;
+    MESH_DEBUG_PRINTLN("LPS22HB was not found at I2C address %02X", 0x5C);
+  }
+  #endif
+
+  #if ENV_INCLUDE_INA3221
+  if (INA3221.begin(TELEM_INA3221_ADDRESS, TELEM_WIRE)) {
+    MESH_DEBUG_PRINTLN("Found INA3221 at address: %02X", TELEM_INA3221_ADDRESS);
+    MESH_DEBUG_PRINTLN("%04X %04X", INA3221.getDieID(), INA3221.getManufacturerID());
+
+    for(int i = 0; i < 3; i++) {
+      INA3221.setShuntResistance(i, TELEM_INA3221_SHUNT_VALUE);
+    }
+    INA3221_initialized = true;
+  } else {
+    INA3221_initialized = false;
+    MESH_DEBUG_PRINTLN("INA3221 was not found at I2C address %02X", TELEM_INA3221_ADDRESS);
   }
   #endif
 
   #if ENV_INCLUDE_INA219
-  if (INA219.begin(&Wire)) {
-      MESH_DEBUG_PRINTLN("Found INA219 at address: %02X", TELEM_INA219_ADDRESS);
-      INA219_initialized = true;
+  if (INA219.begin(TELEM_WIRE)) {
+    MESH_DEBUG_PRINTLN("Found INA219 at address: %02X", TELEM_INA219_ADDRESS);
+    INA219_initialized = true;
   } else {
-      INA219_initialized = false;
-      MESH_DEBUG_PRINTLN("INA219 was not found at I2C address %02X", TELEM_INA219_ADDRESS);
+    INA219_initialized = false;
+    MESH_DEBUG_PRINTLN("INA219 was not found at I2C address %02X", TELEM_INA219_ADDRESS);
+  }
+  #endif
+
+  #if ENV_INCLUDE_MLX90614
+  if (MLX90614.begin(TELEM_MLX90614_ADDRESS, TELEM_WIRE)) {
+    MESH_DEBUG_PRINTLN("Found MLX90614 at address: %02X", TELEM_MLX90614_ADDRESS);
+    MLX90614_initialized = true;
+  } else {
+    MLX90614_initialized = false;
+    MESH_DEBUG_PRINTLN("MLX90614 was not found at I2C address %02X", TELEM_MLX90614_ADDRESS);
+  }
+  #endif
+
+  #if ENV_INCLUDE_VL53L0X
+  if (VL53L0X.begin(TELEM_VL53L0X_ADDRESS, false, TELEM_WIRE)) {
+    MESH_DEBUG_PRINTLN("Found VL53L0X at address: %02X", TELEM_VL53L0X_ADDRESS);
+    VL53L0X_initialized = true;
+  } else {
+    VL53L0X_initialized = false;
+    MESH_DEBUG_PRINTLN("VL53L0X was not found at I2C address %02X", TELEM_VL53L0X_ADDRESS);
   }
   #endif
 
@@ -126,7 +210,7 @@ bool EnvironmentSensorManager::querySensors(uint8_t requester_permissions, Cayen
     if (BME280_initialized) {
       telemetry.addTemperature(TELEM_CHANNEL_SELF, BME280.readTemperature());
       telemetry.addRelativeHumidity(TELEM_CHANNEL_SELF, BME280.readHumidity());
-      telemetry.addBarometricPressure(TELEM_CHANNEL_SELF, BME280.readPressure());
+      telemetry.addBarometricPressure(TELEM_CHANNEL_SELF, BME280.readPressure()/100);
       telemetry.addAltitude(TELEM_CHANNEL_SELF, BME280.readAltitude(TELEM_BME280_SEALEVELPRESSURE_HPA));
     }
     #endif
@@ -134,11 +218,28 @@ bool EnvironmentSensorManager::querySensors(uint8_t requester_permissions, Cayen
     #if ENV_INCLUDE_BMP280
     if (BMP280_initialized) {
       telemetry.addTemperature(TELEM_CHANNEL_SELF, BMP280.readTemperature());
-      telemetry.addBarometricPressure(TELEM_CHANNEL_SELF, BMP280.readPressure());
+      telemetry.addBarometricPressure(TELEM_CHANNEL_SELF, BMP280.readPressure()/100);
       telemetry.addAltitude(TELEM_CHANNEL_SELF, BME280.readAltitude(TELEM_BME280_SEALEVELPRESSURE_HPA));
     }
     #endif
 
+    #if ENV_INCLUDE_SHTC3
+    if (SHTC3_initialized) {
+      sensors_event_t humidity, temp;
+      SHTC3.getEvent(&humidity, &temp);
+
+      telemetry.addTemperature(TELEM_CHANNEL_SELF, temp.temperature);
+      telemetry.addRelativeHumidity(TELEM_CHANNEL_SELF, humidity.relative_humidity);
+    }
+    #endif
+
+    #if ENV_INCLUDE_LPS22HB
+    if (LPS22HB_initialized) {
+      telemetry.addTemperature(TELEM_CHANNEL_SELF, BARO.readTemperature());
+      telemetry.addBarometricPressure(TELEM_CHANNEL_SELF, BARO.readPressure());
+    }
+    #endif
+
     #if ENV_INCLUDE_INA3221
     if (INA3221_initialized) {
       for(int i = 0; i < TELEM_INA3221_NUM_CHANNELS; i++) {
@@ -157,10 +258,29 @@ bool EnvironmentSensorManager::querySensors(uint8_t requester_permissions, Cayen
 
     #if ENV_INCLUDE_INA219
     if (INA219_initialized) {
-        telemetry.addVoltage(next_available_channel, INA219.getBusVoltage_V());
-        telemetry.addCurrent(next_available_channel, INA219.getCurrent_mA() / 1000);
-        telemetry.addPower(next_available_channel, INA219.getPower_mW() / 1000);
-        next_available_channel++;
+      telemetry.addVoltage(next_available_channel, INA219.getBusVoltage_V());
+      telemetry.addCurrent(next_available_channel, INA219.getCurrent_mA() / 1000);
+      telemetry.addPower(next_available_channel, INA219.getPower_mW() / 1000);
+      next_available_channel++;
+    }
+    #endif
+
+    #if ENV_INCLUDE_MLX90614
+    if (MLX90614_initialized) {
+      telemetry.addTemperature(TELEM_CHANNEL_SELF, MLX90614.readObjectTempC());
+      telemetry.addTemperature(TELEM_CHANNEL_SELF + 1, MLX90614.readAmbientTempC());
+    }
+    #endif
+
+    #if ENV_INCLUDE_VL53L0X
+    if (VL53L0X_initialized) {
+      VL53L0X_RangingMeasurementData_t measure;
+      VL53L0X.rangingTest(&measure, false); // pass in 'true' to get debug data
+      if (measure.RangeStatus != 4) { // phase failures
+        telemetry.addDistance(TELEM_CHANNEL_SELF, measure.RangeMilliMeter / 1000.0f); // convert mm to m
+      } else {
+        telemetry.addDistance(TELEM_CHANNEL_SELF, 0.0f); // no valid measurement
+      }
     }
     #endif
 
@@ -251,8 +371,85 @@ void EnvironmentSensorManager::initBasicGPS() {
   gps_active = false; //Set GPS visibility off until setting is changed
 }
 
+#ifdef RAK_BOARD
+void EnvironmentSensorManager::rakGPSInit(){
+
+  Serial1.setPins(PIN_GPS_TX, PIN_GPS_RX);
+
+  #ifdef GPS_BAUD_RATE
+  Serial1.begin(GPS_BAUD_RATE);
+  #else
+  Serial1.begin(9600);
+  #endif
+
+  //search for the correct IO standby pin depending on socket used
+  if(gpsIsAwake(WB_IO2)){
+  //  MESH_DEBUG_PRINTLN("RAK base board is RAK19007/10");
+  //  MESH_DEBUG_PRINTLN("GPS is installed on Socket A");
+  }
+  else if(gpsIsAwake(WB_IO4)){
+  //  MESH_DEBUG_PRINTLN("RAK base board is RAK19003/9");
+  //  MESH_DEBUG_PRINTLN("GPS is installed on Socket C");
+  }
+  else if(gpsIsAwake(WB_IO5)){
+  //  MESH_DEBUG_PRINTLN("RAK base board is RAK19001/11");
+  //  MESH_DEBUG_PRINTLN("GPS is installed on Socket F");
+  }
+  else{
+    MESH_DEBUG_PRINTLN("No GPS found");
+    gps_active = false;
+    gps_detected = false;
+    return;
+  }
+
+  #ifndef FORCE_GPS_ALIVE // for use with repeaters, until GPS toggle is implimented
+  //Now that GPS is found and set up, set to sleep for initial state
+  stop_gps();
+  #endif
+}
+
+bool EnvironmentSensorManager::gpsIsAwake(uint8_t ioPin){
+
+  //set initial waking state
+  pinMode(ioPin,OUTPUT);
+  digitalWrite(ioPin,LOW);
+  delay(500);
+  digitalWrite(ioPin,HIGH);
+  delay(500);
+
+  //Try to init RAK12500 on I2C
+  if (ublox_GNSS.begin(Wire) == true){
+    MESH_DEBUG_PRINTLN("RAK12500 GPS init correctly with pin %i",ioPin);
+    ublox_GNSS.setI2COutput(COM_TYPE_NMEA);
+    ublox_GNSS.saveConfigSelective(VAL_CFG_SUBSEC_IOPORT);
+    gpsResetPin = ioPin;
+    i2cGPSFlag = true;
+    gps_active = true;
+    gps_detected = true;
+    return true;
+  }
+  else if(Serial1){
+    MESH_DEBUG_PRINTLN("Serial GPS init correctly and is turned on");
+    if(PIN_GPS_EN){
+      gpsResetPin = PIN_GPS_EN;
+    }
+    serialGPSFlag = true;
+    gps_active = true;
+    gps_detected = true;
+    return true;
+  }
+  MESH_DEBUG_PRINTLN("GPS did not init with this IO pin... try the next");
+  return false;
+}
+#endif
+
 void EnvironmentSensorManager::start_gps() {
   gps_active = true;
+  #ifdef RAK_BOARD
+    pinMode(gpsResetPin, OUTPUT);
+    digitalWrite(gpsResetPin, HIGH);
+    return;
+  #endif
   #ifdef PIN_GPS_EN
     pinMode(PIN_GPS_EN, OUTPUT);
     digitalWrite(PIN_GPS_EN, HIGH);
@@ -264,6 +461,11 @@ void EnvironmentSensorManager::start_gps() {
 
 void EnvironmentSensorManager::stop_gps() {
   gps_active = false;
+  #ifdef RAK_BOARD
+    pinMode(gpsResetPin, OUTPUT);
+    digitalWrite(gpsResetPin, LOW);
+    return;
+  #endif
   #ifdef PIN_GPS_EN
     pinMode(PIN_GPS_EN, OUTPUT);
     digitalWrite(PIN_GPS_EN, LOW);
@@ -279,12 +481,29 @@ void EnvironmentSensorManager::loop() {
   _location->loop();
 
   if (millis() > next_gps_update) {
-    if (gps_active && _location->isValid()) {
+    if(gps_active){
+    #ifndef RAK_BOARD
+    if (_location->isValid()) {
       node_lat = ((double)_location->getLatitude())/1000000.;
       node_lon = ((double)_location->getLongitude())/1000000.;
       MESH_DEBUG_PRINTLN("lat %f lon %f", node_lat, node_lon);
     }
+    #else
+    if(i2cGPSFlag){
+      node_lat = ((double)ublox_GNSS.getLatitude())/10000000.;
+      node_lon = ((double)ublox_GNSS.getLongitude())/10000000.;
+      MESH_DEBUG_PRINTLN("lat %f lon %f", node_lat, node_lon);
+    }
+    else if (serialGPSFlag && _location->isValid()) {
+      node_lat = ((double)_location->getLatitude())/1000000.;
+      node_lon = ((double)_location->getLongitude())/1000000.;
+      MESH_DEBUG_PRINTLN("lat %f lon %f", node_lat, node_lon);
+    }
+    //else
+    //MESH_DEBUG_PRINTLN("No valid GPS data");
+    #endif
+    }
     next_gps_update = millis() + 1000;
   }
 }
-#endif
+#endif

src/helpers/sensors/EnvironmentSensorManager.h

@@ -13,6 +13,10 @@ protected:
   bool BMP280_initialized = false;
   bool INA3221_initialized = false;
   bool INA219_initialized = false;
+  bool SHTC3_initialized = false;
+  bool LPS22HB_initialized = false;
+  bool MLX90614_initialized = false;
+  bool VL53L0X_initialized = false;
 
   bool gps_detected = false;
   bool gps_active = false;
@@ -22,6 +26,10 @@ protected:
   void start_gps();
   void stop_gps();
   void initBasicGPS();
+  #ifdef RAK_BOARD
+  void rakGPSInit();
+  bool gpsIsAwake(uint8_t ioPin);
+  #endif
   #endif
 
 

src/helpers/ui/E213Display.cpp

@@ -0,0 +1,116 @@
+#include "E213Display.h"
+
+#include "../../MeshCore.h"
+
+bool E213Display::begin() {
+  if (_init) return true;
+
+  powerOn();
+  display.begin();
+
+  // Set to landscape mode rotated 180 degrees
+  display.setRotation(3);
+
+  _init = true;
+  _isOn = true;
+
+  clear();
+  display.fastmodeOn(); // Enable fast mode for quicker (partial) updates
+
+  return true;
+}
+
+void E213Display::powerOn() {
+#ifdef PIN_VEXT_EN
+  pinMode(PIN_VEXT_EN, OUTPUT);
+  digitalWrite(PIN_VEXT_EN, LOW); // Active low
+  delay(50);                      // Allow power to stabilize
+#endif
+}
+
+void E213Display::powerOff() {
+#ifdef PIN_VEXT_EN
+  digitalWrite(PIN_VEXT_EN, HIGH); // Turn off power
+#endif
+}
+
+void E213Display::turnOn() {
+  if (!_init) begin();
+  powerOn();
+  _isOn = true;
+}
+
+void E213Display::turnOff() {
+  powerOff();
+  _isOn = false;
+}
+
+void E213Display::clear() {
+  display.clear();
+}
+
+void E213Display::startFrame(Color bkg) {
+  // Fill screen with white first to ensure clean background
+  display.fillRect(0, 0, width(), height(), WHITE);
+  if (bkg == LIGHT) {
+    // Fill with black if light background requested (inverted for e-ink)
+    display.fillRect(0, 0, width(), height(), BLACK);
+  }
+}
+
+void E213Display::setTextSize(int sz) {
+  // The library handles text size internally
+  display.setTextSize(sz);
+}
+
+void E213Display::setColor(Color c) {
+  // implemented in individual display methods
+}
+
+void E213Display::setCursor(int x, int y) {
+  display.setCursor(x, y);
+}
+
+void E213Display::print(const char *str) {
+  display.print(str);
+}
+
+void E213Display::fillRect(int x, int y, int w, int h) {
+  display.fillRect(x, y, w, h, BLACK);
+}
+
+void E213Display::drawRect(int x, int y, int w, int h) {
+  display.drawRect(x, y, w, h, BLACK);
+}
+
+void E213Display::drawXbm(int x, int y, const uint8_t *bits, int w, int h) {
+  // Width in bytes for bitmap processing
+  uint16_t widthInBytes = (w + 7) / 8;
+
+  // Process the bitmap row by row
+  for (int by = 0; by < h; by++) {
+    // Scan across the row bit by bit
+    for (int bx = 0; bx < w; bx++) {
+      // Get the current bit using MSB ordering (like GxEPDDisplay)
+      uint16_t byteOffset = (by * widthInBytes) + (bx / 8);
+      uint8_t bitMask = 0x80 >> (bx & 7);
+      bool bitSet = bits[byteOffset] & bitMask;
+
+      // If the bit is set, draw the pixel
+      if (bitSet) {
+        display.drawPixel(x + bx, y + by, BLACK);
+      }
+    }
+  }
+}
+
+uint16_t E213Display::getTextWidth(const char *str) {
+  int16_t x1, y1;
+  uint16_t w, h;
+  display.getTextBounds(str, 0, 0, &x1, &y1, &w, &h);
+  return w;
+}
+
+void E213Display::endFrame() {
+  display.update();
+}

src/helpers/ui/E213Display.h

@@ -0,0 +1,37 @@
+#pragma once
+
+#include "DisplayDriver.h"
+
+#include <SPI.h>
+#include <Wire.h>
+#include <heltec-eink-modules.h>
+
+// Display driver for E213 e-ink display
+class E213Display : public DisplayDriver {
+  EInkDisplay_VisionMasterE213 display;
+  bool _init = false;
+  bool _isOn = false;
+
+public:
+  E213Display() : DisplayDriver(250, 122) {}
+
+  bool begin();
+  bool isOn() override { return _isOn; }
+  void turnOn() override;
+  void turnOff() override;
+  void clear() override;
+  void startFrame(Color bkg = DARK) override;
+  void setTextSize(int sz) override;
+  void setColor(Color c) override;
+  void setCursor(int x, int y) override;
+  void print(const char *str) override;
+  void fillRect(int x, int y, int w, int h) override;
+  void drawRect(int x, int y, int w, int h) override;
+  void drawXbm(int x, int y, const uint8_t *bits, int w, int h) override;
+  uint16_t getTextWidth(const char *str) override;
+  void endFrame() override;
+
+private:
+  void powerOn();
+  void powerOff();
+};

src/helpers/ui/buzzer.cpp

@@ -46,6 +46,13 @@ void genericBuzzer::shutdown() {
 
 void genericBuzzer::quiet(bool buzzer_state) {
     _is_quiet = buzzer_state;
+#ifdef PIN_BUZZER_EN
+    if (_is_quiet) {
+      digitalWrite(PIN_BUZZER_EN, LOW);
+    } else {
+      digitalWrite(PIN_BUZZER_EN, HIGH);
+    }
+#endif
 }
 
 bool genericBuzzer::isQuiet() {

variants/generic-e22/target.h

@@ -2,10 +2,10 @@
 
 #define RADIOLIB_STATIC_ONLY 1
 #include <RadioLib.h>
-#include <helpers/RadioLibWrappers.h>
+#include <helpers/radiolib/RadioLibWrappers.h>
 #include <helpers/ESP32Board.h>
-#include <helpers/CustomSX1262Wrapper.h>
-#include <helpers/CustomSX1268Wrapper.h>
+#include <helpers/radiolib/CustomSX1262Wrapper.h>
+#include <helpers/radiolib/CustomSX1268Wrapper.h>
 #include <helpers/AutoDiscoverRTCClock.h>
 #include <helpers/SensorManager.h>
 

variants/heltec_ct62/target.cpp

@@ -10,43 +10,10 @@ ESP32RTCClock fallback_clock;
 AutoDiscoverRTCClock rtc_clock(fallback_clock);
 SensorManager sensors;
 
-#ifndef LORA_CR
-  #define LORA_CR      5
-#endif
-
 bool radio_init() {
   fallback_clock.begin();
-  rtc_clock.begin(Wire);
-  
-#ifdef SX126X_DIO3_TCXO_VOLTAGE
-  float tcxo = SX126X_DIO3_TCXO_VOLTAGE;
-#else
-  float tcxo = 1.6f;
-#endif
-
-#if defined(P_LORA_SCLK)
-  SPI.begin(P_LORA_SCLK, P_LORA_MISO, P_LORA_MOSI);
-#endif
-  int status = radio.begin(LORA_FREQ, LORA_BW, LORA_SF, LORA_CR, RADIOLIB_SX126X_SYNC_WORD_PRIVATE, LORA_TX_POWER, 8, tcxo);
-  if (status != RADIOLIB_ERR_NONE) {
-    Serial.print("ERROR: radio init failed: ");
-    Serial.println(status);
-    return false;  // fail
-  }
-  
-  radio.setCRC(1);
-  
-#ifdef SX126X_CURRENT_LIMIT
-  radio.setCurrentLimit(SX126X_CURRENT_LIMIT);
-#endif
-#ifdef SX126X_DIO2_AS_RF_SWITCH
-  radio.setDio2AsRfSwitch(SX126X_DIO2_AS_RF_SWITCH);
-#endif
-#ifdef SX126X_RX_BOOSTED_GAIN
-  radio.setRxBoostedGainMode(SX126X_RX_BOOSTED_GAIN);
-#endif
-
-  return true;  // success
+  rtc_clock.begin(Wire);  
+  return radio.std_init(&SPI);
 }
 
 uint32_t radio_get_rng_seed() {

variants/heltec_ct62/target.h

@@ -2,9 +2,9 @@
 
 #define RADIOLIB_STATIC_ONLY 1
 #include <RadioLib.h>
-#include <helpers/RadioLibWrappers.h>
+#include <helpers/radiolib/RadioLibWrappers.h>
 #include "HT-CT62Board.h"
-#include <helpers/CustomSX1262Wrapper.h>
+#include <helpers/radiolib/CustomSX1262Wrapper.h>
 #include <helpers/AutoDiscoverRTCClock.h>
 #include <helpers/SensorManager.h>
 

variants/heltec_tracker/target.cpp

@@ -23,43 +23,16 @@ HWTSensorManager sensors = HWTSensorManager(nmea);
   DISPLAY_CLASS display(&board.periph_power);   // peripheral power pin is shared
 #endif
 
-#ifndef LORA_CR
-  #define LORA_CR      5
-#endif
-
 bool radio_init() {
   fallback_clock.begin();
   rtc_clock.begin(Wire);
   
-#ifdef SX126X_DIO3_TCXO_VOLTAGE
-  float tcxo = SX126X_DIO3_TCXO_VOLTAGE;
-#else
-  float tcxo = 1.6f;
-#endif
-
 #if defined(P_LORA_SCLK)
-  spi.begin(P_LORA_SCLK, P_LORA_MISO, P_LORA_MOSI);
-#endif
-  int status = radio.begin(LORA_FREQ, LORA_BW, LORA_SF, LORA_CR, RADIOLIB_SX126X_SYNC_WORD_PRIVATE, LORA_TX_POWER, 8, tcxo);
-  if (status != RADIOLIB_ERR_NONE) {
-    Serial.print("ERROR: radio init failed: ");
-    Serial.println(status);
-    return false;  // fail
-  }
-  
-  radio.setCRC(1);
-  
-#ifdef SX126X_CURRENT_LIMIT
-  radio.setCurrentLimit(SX126X_CURRENT_LIMIT);
-#endif
-#ifdef SX126X_DIO2_AS_RF_SWITCH
-  radio.setDio2AsRfSwitch(SX126X_DIO2_AS_RF_SWITCH);
-#endif
-#ifdef SX126X_RX_BOOSTED_GAIN
-  radio.setRxBoostedGainMode(SX126X_RX_BOOSTED_GAIN);
+  return radio.std_init(&spi);
+#else
+  return radio.std_init();
 #endif
 
-  return true;  // success
 }
 
 uint32_t radio_get_rng_seed() {

variants/heltec_tracker/target.h

@@ -2,9 +2,9 @@
 
 #define RADIOLIB_STATIC_ONLY 1
 #include <RadioLib.h>
-#include <helpers/RadioLibWrappers.h>
+#include <helpers/radiolib/RadioLibWrappers.h>
 #include <helpers/HeltecV3Board.h>
-#include <helpers/CustomSX1262Wrapper.h>
+#include <helpers/radiolib/CustomSX1262Wrapper.h>
 #include <helpers/AutoDiscoverRTCClock.h>
 #include <helpers/SensorManager.h>
 #include <helpers/sensors/LocationProvider.h>

variants/heltec_v2/platformio.ini

@@ -96,7 +96,7 @@ build_flags =
   -D DISPLAY_CLASS=SSD1306Display
   -D MAX_CONTACTS=100
   -D MAX_GROUP_CHANNELS=8
-  -D BLE_PIN_CODE=0
+  -D BLE_PIN_CODE=123456
   -D BLE_DEBUG_LOGGING=1
   -D OFFLINE_QUEUE_SIZE=256
 ;  -D MESH_PACKET_LOGGING=1

variants/heltec_v2/target.h

@@ -2,9 +2,9 @@
 
 #define RADIOLIB_STATIC_ONLY 1
 #include <RadioLib.h>
-#include <helpers/RadioLibWrappers.h>
+#include <helpers/radiolib/RadioLibWrappers.h>
 #include <helpers/HeltecV2Board.h>
-#include <helpers/CustomSX1276Wrapper.h>
+#include <helpers/radiolib/CustomSX1276Wrapper.h>
 #include <helpers/AutoDiscoverRTCClock.h>
 #include <helpers/SensorManager.h>
 #ifdef DISPLAY_CLASS

variants/heltec_v3/platformio.ini

@@ -23,9 +23,9 @@ build_flags =
   -D ENV_INCLUDE_INA3221=1
   -D ENV_INCLUDE_INA219=1
   -D ENV_INCLUDE_GPS=1
-  -D PIN_GPS_RX=45
-  -D PIN_GPS_TX=46
-  -D PIN_GPS_EN=-1
+  -D PIN_GPS_RX=47
+  -D PIN_GPS_TX=48
+  -D PIN_GPS_EN=26
 build_src_filter = ${esp32_base.build_src_filter}
   +<../variants/heltec_v3>
   +<helpers/sensors>
@@ -114,7 +114,7 @@ build_flags =
   -D MAX_CONTACTS=100
   -D MAX_GROUP_CHANNELS=8
   -D DISPLAY_CLASS=SSD1306Display
-  -D BLE_PIN_CODE=0   ; dynamic, random PIN
+  -D BLE_PIN_CODE=123456   ; dynamic, random PIN
   -D BLE_DEBUG_LOGGING=1
   -D OFFLINE_QUEUE_SIZE=256
 ;  -D MESH_PACKET_LOGGING=1
@@ -147,6 +147,30 @@ lib_deps =
   ${Heltec_lora32_v3.lib_deps}
   densaugeo/base64 @ ~1.4.0
 
+[env:Heltec_v3_sensor]
+extends = Heltec_lora32_v3
+build_flags =
+  ${Heltec_lora32_v3.build_flags}
+  -D ADVERT_NAME='"Heltec v3 Sensor"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D ENV_PIN_SDA=33
+  -D ENV_PIN_SCL=34
+  -D ENV_INCLUDE_MLX90614=1
+  -D ENV_INCLUDE_VL53L0X=1
+  -D DISPLAY_CLASS=SSD1306Display
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+build_src_filter = ${Heltec_lora32_v3.build_src_filter}
+  +<helpers/ui/SSD1306Display.cpp>
+  +<../examples/simple_sensor>
+lib_deps =
+  ${Heltec_lora32_v3.lib_deps}
+  ${esp32_ota.lib_deps}
+  adafruit/Adafruit MLX90614 Library @ ^2.1.5
+  adafruit/Adafruit_VL53L0X @ ^1.2.4
+
 [env:Heltec_WSL3_repeater]
 extends = Heltec_lora32_v3
 build_flags =
@@ -198,3 +222,19 @@ build_src_filter = ${Heltec_lora32_v3.build_src_filter}
 lib_deps =
   ${Heltec_lora32_v3.lib_deps}
   densaugeo/base64 @ ~1.4.0
+
+[env:Heltec_WSL3_sensor]
+extends = Heltec_lora32_v3
+build_flags =
+  ${Heltec_lora32_v3.build_flags}
+  -D ADVERT_NAME='"Heltec Sensor"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+build_src_filter = ${Heltec_lora32_v3.build_src_filter}
+  +<../examples/simple_sensor>
+lib_deps =
+  ${Heltec_lora32_v3.lib_deps}
+  ${esp32_ota.lib_deps}

variants/heltec_v3/target.h

@@ -2,9 +2,9 @@
 
 #define RADIOLIB_STATIC_ONLY 1
 #include <RadioLib.h>
-#include <helpers/RadioLibWrappers.h>
+#include <helpers/radiolib/RadioLibWrappers.h>
 #include <helpers/HeltecV3Board.h>
-#include <helpers/CustomSX1262Wrapper.h>
+#include <helpers/radiolib/CustomSX1262Wrapper.h>
 #include <helpers/AutoDiscoverRTCClock.h>
 #include <helpers/SensorManager.h>
 #include <helpers/sensors/EnvironmentSensorManager.h>

variants/heltec_wireless_paper/platformio.ini

@@ -0,0 +1,84 @@
+[Heltec_Wireless_Paper_base]
+extends = esp32_base
+board = esp32-s3-devkitc-1
+build_flags =
+  ${esp32_base.build_flags}
+  -I variants/heltec_wireless_paper
+  -D HELTEC_WIRELESS_PAPER
+  -D RADIO_CLASS=CustomSX1262
+  -D WRAPPER_CLASS=CustomSX1262Wrapper
+  -D LORA_TX_POWER=22
+  -D P_LORA_TX_LED=18
+  ; -D PIN_BOARD_SDA=17
+  ; -D PIN_BOARD_SCL=18
+  -D PIN_USER_BTN=0
+  -D PIN_VEXT_EN=45
+  -D PIN_VBAT_READ=20
+  -D PIN_ADC_CTRL=19
+  -D SX126X_DIO2_AS_RF_SWITCH=true
+  -D SX126X_DIO3_TCXO_VOLTAGE=1.8
+  -D SX126X_CURRENT_LIMIT=140
+  -D SX126X_RX_BOOSTED_GAIN=1
+  -D DISP_CS=4
+  -D DISP_BUSY=7
+  -D DISP_DC=5
+  -D DISP_RST=6
+  -D DISP_SCLK=3
+  -D DISP_MOSI=2
+  -D ARDUINO_heltec_wifi_lora_32_V3
+  -D WIRELESS_PAPER
+build_src_filter = ${esp32_base.build_src_filter}
+  +<../variants/heltec_wireless_paper>    
+lib_deps =
+  ${esp32_base.lib_deps}
+  todd-herbert/heltec-eink-modules @ 4.5.0
+
+[env:Heltec_Wireless_Paper_companion_radio_ble]
+extends = Heltec_Wireless_Paper_base
+build_flags =
+  ${Heltec_Wireless_Paper_base.build_flags}
+  -D MAX_CONTACTS=100
+  -D MAX_GROUP_CHANNELS=8
+  -D DISPLAY_CLASS=E213Display
+  -D BLE_PIN_CODE=123456   ; dynamic, random PIN
+  -D BLE_DEBUG_LOGGING=1
+  -D OFFLINE_QUEUE_SIZE=256
+build_src_filter = ${Heltec_Wireless_Paper_base.build_src_filter}
+  +<helpers/ui/E213Display.cpp>
+  +<helpers/esp32/*.cpp>
+  +<../examples/companion_radio>
+lib_deps =
+  ${Heltec_Wireless_Paper_base.lib_deps}
+  densaugeo/base64 @ ~1.4.0
+
+[env:Heltec_Wireless_Paper_repeater]
+extends = Heltec_Wireless_Paper_base
+build_flags =
+  ${Heltec_Wireless_Paper_base.build_flags}
+  -D DISPLAY_CLASS=E213Display
+  -D ADVERT_NAME='"Heltec WP Repeater"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+build_src_filter = ${Heltec_Wireless_Paper_base.build_src_filter}
+  +<helpers/ui/E213Display.cpp>
+  +<../examples/simple_repeater>
+lib_deps =
+  ${Heltec_Wireless_Paper_base.lib_deps}
+  ${esp32_ota.lib_deps}
+
+[env:Heltec_Wireless_Paper_room_server]
+extends = Heltec_Wireless_Paper_base
+build_flags =
+  ${Heltec_Wireless_Paper_base.build_flags}
+  -D DISPLAY_CLASS=E213Display
+  -D ADVERT_NAME='"Heltec WP Room"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D ROOM_PASSWORD='"hello"'
+build_src_filter = ${Heltec_Wireless_Paper_base.build_src_filter}
+  +<helpers/ui/E213Display.cpp>
+  +<../examples/simple_room_server>
+lib_deps =
+  ${Heltec_Wireless_Paper_base.lib_deps}
+  ${esp32_ota.lib_deps}

variants/heltec_wireless_paper/target.cpp

@@ -0,0 +1,52 @@
+#include "target.h"
+#include <Arduino.h>
+
+HeltecV3Board board;
+
+#if defined(P_LORA_SCLK)
+  static SPIClass spi;
+  RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_1, P_LORA_RESET, P_LORA_BUSY, spi);
+#else
+  RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_1, P_LORA_RESET, P_LORA_BUSY);
+#endif
+
+WRAPPER_CLASS radio_driver(radio, board);
+
+ESP32RTCClock fallback_clock;
+AutoDiscoverRTCClock rtc_clock(fallback_clock);
+
+SensorManager sensors;
+
+#ifdef DISPLAY_CLASS
+DISPLAY_CLASS display;
+#endif
+
+bool radio_init() {
+  fallback_clock.begin();
+  rtc_clock.begin(Wire);
+#if defined(P_LORA_SCLK)
+  return radio.std_init(&spi);
+#else
+  return radio.std_init();
+#endif
+}
+
+uint32_t radio_get_rng_seed() {
+  return radio.random(0x7FFFFFFF);
+}
+
+void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
+  radio.setFrequency(freq);
+  radio.setSpreadingFactor(sf);
+  radio.setBandwidth(bw);
+  radio.setCodingRate(cr);
+}
+
+void radio_set_tx_power(uint8_t dbm) {
+  radio.setOutputPower(dbm);
+}
+
+mesh::LocalIdentity radio_new_identity() {
+  RadioNoiseListener rng(radio);
+  return mesh::LocalIdentity(&rng); // create new random identity
+}

variants/heltec_wireless_paper/target.h

@@ -0,0 +1,27 @@
+#pragma once
+
+#define RADIOLIB_STATIC_ONLY 1
+#include <RadioLib.h>
+#include <helpers/radiolib/RadioLibWrappers.h>
+#include <helpers/HeltecV3Board.h>
+#include <helpers/radiolib/CustomSX1262Wrapper.h>
+#include <helpers/AutoDiscoverRTCClock.h>
+#include <helpers/SensorManager.h>
+#ifdef DISPLAY_CLASS
+#include <helpers/ui/E213Display.h>
+#endif
+
+extern HeltecV3Board board;
+extern WRAPPER_CLASS radio_driver;
+extern AutoDiscoverRTCClock rtc_clock;
+extern SensorManager sensors;
+
+#ifdef DISPLAY_CLASS
+extern DISPLAY_CLASS display;
+#endif
+
+bool radio_init();
+uint32_t radio_get_rng_seed();
+void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
+void radio_set_tx_power(uint8_t dbm);
+mesh::LocalIdentity radio_new_identity();

variants/lilygo_t3s3/target.cpp

@@ -3,13 +3,8 @@
 
 ESP32Board board;
 
-#if defined(P_LORA_SCLK)
-  static SPIClass spi;
-  RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_1, P_LORA_RESET, P_LORA_BUSY, spi);
-#else
-  RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_1, P_LORA_RESET, P_LORA_BUSY);
-#endif
-
+static SPIClass spi;
+RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_1, P_LORA_RESET, P_LORA_BUSY, spi);
 WRAPPER_CLASS radio_driver(radio, board);
 
 ESP32RTCClock fallback_clock;
@@ -28,35 +23,7 @@ bool radio_init() {
   fallback_clock.begin();
   rtc_clock.begin(Wire);
   
-#ifdef SX126X_DIO3_TCXO_VOLTAGE
-  float tcxo = SX126X_DIO3_TCXO_VOLTAGE;
-#else
-  float tcxo = 1.6f;
-#endif
-
-#if defined(P_LORA_SCLK)
-  spi.begin(P_LORA_SCLK, P_LORA_MISO, P_LORA_MOSI);
-#endif
-  int status = radio.begin(LORA_FREQ, LORA_BW, LORA_SF, LORA_CR, RADIOLIB_SX126X_SYNC_WORD_PRIVATE, LORA_TX_POWER, 8, tcxo);
-  if (status != RADIOLIB_ERR_NONE) {
-    Serial.print("ERROR: radio init failed: ");
-    Serial.println(status);
-    return false;  // fail
-  }
-  
-  radio.setCRC(1);
-  
-#ifdef SX126X_CURRENT_LIMIT
-  radio.setCurrentLimit(SX126X_CURRENT_LIMIT);
-#endif
-#ifdef SX126X_DIO2_AS_RF_SWITCH
-  radio.setDio2AsRfSwitch(SX126X_DIO2_AS_RF_SWITCH);
-#endif
-#ifdef SX126X_RX_BOOSTED_GAIN
-  radio.setRxBoostedGainMode(SX126X_RX_BOOSTED_GAIN);
-#endif
-
-  return true;  // success
+  return radio.std_init(&spi);
 }
 
 uint32_t radio_get_rng_seed() {

variants/lilygo_t3s3/target.h

@@ -2,9 +2,9 @@
 
 #define RADIOLIB_STATIC_ONLY 1
 #include <RadioLib.h>
-#include <helpers/RadioLibWrappers.h>
+#include <helpers/radiolib/RadioLibWrappers.h>
 #include <helpers/ESP32Board.h>
-#include <helpers/CustomSX1262Wrapper.h>
+#include <helpers/radiolib/CustomSX1262Wrapper.h>
 #include <helpers/AutoDiscoverRTCClock.h>
 #include <helpers/SensorManager.h>
 #ifdef DISPLAY_CLASS

variants/lilygo_t3s3_sx1276/target.h

@@ -2,9 +2,9 @@
 
 #define RADIOLIB_STATIC_ONLY 1
 #include <RadioLib.h>
-#include <helpers/RadioLibWrappers.h>
+#include <helpers/radiolib/RadioLibWrappers.h>
 #include <helpers/ESP32Board.h>
-#include <helpers/CustomSX1276Wrapper.h>
+#include <helpers/radiolib/CustomSX1276Wrapper.h>
 #include <helpers/AutoDiscoverRTCClock.h>
 #include <helpers/SensorManager.h>
 #ifdef DISPLAY_CLASS

variants/lilygo_tbeam_SX1262/platformio.ini

@@ -69,4 +69,21 @@ build_src_filter = ${LilyGo_TBeam_SX1262.build_src_filter}
   +<../examples/simple_repeater>
 lib_deps =
   ${LilyGo_TBeam_SX1262.lib_deps}
-  ${esp32_ota.lib_deps}
+  ${esp32_ota.lib_deps}
+
+[env:Tbeam_SX1262_room_server]
+extends = LilyGo_TBeam_SX1262
+build_flags =
+  ${LilyGo_TBeam_SX1262.build_flags}
+  -D ADVERT_NAME='"Tbeam SX1262 Room"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D ROOM_PASSWORD='"hello"'
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+build_src_filter = ${LilyGo_TBeam_SX1262.build_src_filter}
+  +<../examples/simple_room_server>
+lib_deps =
+  ${LilyGo_TBeam_SX1262.lib_deps}
+  ${esp32_ota.lib_deps}

variants/lilygo_tbeam_SX1262/target.h

@@ -2,9 +2,9 @@
 
 #define RADIOLIB_STATIC_ONLY 1
 #include <RadioLib.h>
-#include <helpers/RadioLibWrappers.h>
+#include <helpers/radiolib/RadioLibWrappers.h>
 #include <helpers/esp32/TBeamBoard.h>
-#include <helpers/CustomSX1262Wrapper.h>
+#include <helpers/radiolib/CustomSX1262Wrapper.h>
 #include <helpers/AutoDiscoverRTCClock.h>
 #include <helpers/sensors/EnvironmentSensorManager.h>
 #ifdef DISPLAY_CLASS

variants/lilygo_tbeam_SX1276/target.h

@@ -2,9 +2,9 @@
 
 #define RADIOLIB_STATIC_ONLY 1
 //#include <RadioLib.h>
-#include <helpers/RadioLibWrappers.h>
+#include <helpers/radiolib/RadioLibWrappers.h>
 #include <helpers/esp32/TBeamBoard.h>
-#include <helpers/CustomSX1276Wrapper.h>
+#include <helpers/radiolib/CustomSX1276Wrapper.h>
 #include <helpers/AutoDiscoverRTCClock.h>
 #include <helpers/sensors/EnvironmentSensorManager.h>
 #ifdef DISPLAY_CLASS

variants/lilygo_tbeam_supreme_SX1262/target.h

@@ -2,9 +2,9 @@
 
 #define RADIOLIB_STATIC_ONLY 1
 #include <RadioLib.h>
-#include <helpers/RadioLibWrappers.h>
+#include <helpers/radiolib/RadioLibWrappers.h>
 #include <helpers/esp32/TBeamBoard.h>
-#include <helpers/CustomSX1262Wrapper.h>
+#include <helpers/radiolib/CustomSX1262Wrapper.h>
 #include <helpers/AutoDiscoverRTCClock.h>
 #include <helpers/sensors/EnvironmentSensorManager.h>
 

variants/lilygo_tlora_c6/target.h

@@ -2,9 +2,9 @@
 
 #define RADIOLIB_STATIC_ONLY 1
 #include <RadioLib.h>
-#include <helpers/RadioLibWrappers.h>
+#include <helpers/radiolib/RadioLibWrappers.h>
 #include <helpers/ESP32Board.h>
-#include <helpers/CustomSX1262Wrapper.h>
+#include <helpers/radiolib/CustomSX1262Wrapper.h>
 #include <helpers/AutoDiscoverRTCClock.h>
 #include <helpers/SensorManager.h>
 

variants/lilygo_tlora_v2_1/target.h

@@ -2,9 +2,9 @@
 
 #define RADIOLIB_STATIC_ONLY 1
 #include <RadioLib.h>
-#include <helpers/RadioLibWrappers.h>
+#include <helpers/radiolib/RadioLibWrappers.h>
 #include <helpers/LilyGoTLoraBoard.h>
-#include <helpers/CustomSX1276Wrapper.h>
+#include <helpers/radiolib/CustomSX1276Wrapper.h>
 #include <helpers/AutoDiscoverRTCClock.h>
 #include <helpers/SensorManager.h>
 #include <helpers/sensors/EnvironmentSensorManager.h>

variants/meshadventurer/platformio.ini

@@ -0,0 +1,234 @@
+[Meshadventurer]
+extends = esp32_base
+board = esp32doit-devkit-v1
+board_build.partitions = min_spiffs.csv ; get around 4mb flash limit
+build_flags =
+  ${esp32_base.build_flags}
+  -I variants/meshadventurer
+  -D MESHADVENTURER
+  -D P_LORA_TX_LED=2
+  -D PIN_VBAT_READ=35
+  -D PIN_USER_BTN_ANA=39
+  -D P_LORA_DIO_1=33
+  -D P_LORA_NSS=18
+  -D P_LORA_RESET=23
+  -D P_LORA_BUSY=32
+  -D P_LORA_SCLK=5
+  -D P_LORA_MOSI=27
+  -D P_LORA_MISO=19
+  -D SX126X_TXEN=13
+  -D SX126X_RXEN=14
+  -D PIN_BOARD_SDA=21
+  -D PIN_BOARD_SCL=22
+  -D SX126X_DIO2_AS_RF_SWITCH=false
+  -D SX126X_DIO3_TCXO_VOLTAGE=1.8
+  -D SX126X_RX_BOOSTED_GAIN=1
+  -D PIN_GPS_RX=12
+  -D PIN_GPS_TX=15
+  -D DISPLAY_CLASS=SSD1306Display
+build_src_filter = ${esp32_base.build_src_filter}
+  +<../variants/meshadventurer>
+lib_deps =
+  ${esp32_base.lib_deps}
+  stevemarple/MicroNMEA @ ^2.0.6
+  adafruit/Adafruit SSD1306 @ ^2.5.13
+
+[env:Meshadventurer_sx1262_repeater]
+extends = Meshadventurer
+build_src_filter = ${Meshadventurer.build_src_filter}
+  +<../examples/simple_repeater>
+  +<helpers/ui/SSD1306Display.cpp>
+build_flags =
+  ${Meshadventurer.build_flags}
+  -D RADIO_CLASS=CustomSX1262
+  -D WRAPPER_CLASS=CustomSX1262Wrapper
+  -D LORA_TX_POWER=22
+  -D ADVERT_NAME='"Meshadventurer Repeater"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D MAX_NEIGHBOURS=8
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+lib_deps =
+  ${Meshadventurer.lib_deps}
+  ${esp32_ota.lib_deps}
+
+[env:Meshadventurer_sx1268_repeater]
+extends = Meshadventurer
+build_src_filter = ${Meshadventurer.build_src_filter}
+  +<../examples/simple_repeater>
+  +<helpers/ui/SSD1306Display.cpp>
+build_flags =
+  ${Meshadventurer.build_flags}
+  -D RADIO_CLASS=CustomSX1268
+  -D WRAPPER_CLASS=CustomSX1268Wrapper
+  -D LORA_TX_POWER=22
+  -D ADVERT_NAME='"Meshadventurer Repeater"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D MAX_NEIGHBOURS=8
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+lib_deps =
+  ${Meshadventurer.lib_deps}
+  ${esp32_ota.lib_deps}
+
+[env:Meshadventurer_sx1262_companion_radio_usb]
+extends = Meshadventurer
+build_src_filter = ${Meshadventurer.build_src_filter}
+  +<../examples/companion_radio>
+  +<helpers/ui/SSD1306Display.cpp>
+build_flags =
+  ${Meshadventurer.build_flags}
+  -D RADIO_CLASS=CustomSX1262
+  -D WRAPPER_CLASS=CustomSX1262Wrapper
+  -D LORA_TX_POWER=22
+  -D MAX_CONTACTS=100
+  -D MAX_GROUP_CHANNELS=8
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+lib_deps =
+  ${Meshadventurer.lib_deps}
+  densaugeo/base64 @ ~1.4.0
+
+[env:Meshadventurer_sx1262_companion_radio_ble]
+extends = Meshadventurer
+build_src_filter = ${Meshadventurer.build_src_filter}
+  +<../examples/companion_radio>
+  +<helpers/esp32/*.cpp>
+  +<helpers/ui/SSD1306Display.cpp>
+build_flags =
+  ${Meshadventurer.build_flags}
+  -D RADIO_CLASS=CustomSX1262
+  -D WRAPPER_CLASS=CustomSX1262Wrapper
+  -D LORA_TX_POWER=22
+  -D MAX_CONTACTS=100
+  -D MAX_GROUP_CHANNELS=8
+  -D BLE_PIN_CODE=123456
+  -D BLE_DEBUG_LOGGING=1
+  -D OFFLINE_QUEUE_SIZE=256
+  -D MESH_PACKET_LOGGING=1
+  -D MESH_DEBUG=1
+lib_deps =
+  ${Meshadventurer.lib_deps}
+  densaugeo/base64 @ ~1.4.0
+
+[env:Meshadventurer_sx1262_terminal_chat]
+extends = Meshadventurer
+build_flags =
+  ${Meshadventurer.build_flags}
+  -D RADIO_CLASS=CustomSX1262
+  -D WRAPPER_CLASS=CustomSX1262Wrapper
+  -D LORA_TX_POWER=22
+  -D MAX_CONTACTS=100
+  -D MAX_GROUP_CHANNELS=1
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+build_src_filter = ${Meshadventurer.build_src_filter}
+  +<../examples/simple_secure_chat/main.cpp>
+  +<helpers/ui/SSD1306Display.cpp>
+lib_deps =
+  ${Meshadventurer.lib_deps}
+  densaugeo/base64 @ ~1.4.0
+
+[env:Meshadventurer_sx1262_room_server]
+extends = Meshadventurer
+build_flags =
+  ${Meshadventurer.build_flags}
+  -D RADIO_CLASS=CustomSX1262
+  -D WRAPPER_CLASS=CustomSX1262Wrapper
+  -D LORA_TX_POWER=22
+  -D ADVERT_NAME='"Meshadventurer Room"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D ROOM_PASSWORD='"hello"'
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+build_src_filter = ${Meshadventurer.build_src_filter}
+  +<../examples/simple_room_server>
+  +<helpers/ui/SSD1306Display.cpp>
+lib_deps =
+  ${Meshadventurer.lib_deps}
+  ${esp32_ota.lib_deps}
+
+[env:Meshadventurer_sx1268_companion_radio_usb]
+extends = Meshadventurer
+build_src_filter = ${Meshadventurer.build_src_filter}
+  +<../examples/companion_radio>
+  +<helpers/ui/SSD1306Display.cpp>
+build_flags =
+  ${Meshadventurer.build_flags}
+  -D RADIO_CLASS=CustomSX1268
+  -D WRAPPER_CLASS=CustomSX1268Wrapper
+  -D LORA_TX_POWER=22
+  -D MAX_CONTACTS=100
+  -D MAX_GROUP_CHANNELS=8
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+lib_deps =
+  ${Meshadventurer.lib_deps}
+  densaugeo/base64 @ ~1.4.0
+
+[env:Meshadventurer_sx1268_companion_radio_ble]
+extends = Meshadventurer
+build_src_filter = ${Meshadventurer.build_src_filter}
+  +<../examples/companion_radio>
+  +<helpers/esp32/*.cpp>
+  +<helpers/ui/SSD1306Display.cpp>
+build_flags =
+  ${Meshadventurer.build_flags}
+  -D RADIO_CLASS=CustomSX1268
+  -D WRAPPER_CLASS=CustomSX1268Wrapper
+  -D LORA_TX_POWER=22
+  -D MAX_CONTACTS=100
+  -D MAX_GROUP_CHANNELS=8
+  -D BLE_PIN_CODE=123456
+  -D BLE_DEBUG_LOGGING=1
+  -D OFFLINE_QUEUE_SIZE=256
+  -D MESH_PACKET_LOGGING=1
+  -D MESH_DEBUG=1
+lib_deps =
+  ${Meshadventurer.lib_deps}
+  densaugeo/base64 @ ~1.4.0
+
+[env:Meshadventurer_sx1268_terminal_chat]
+extends = Meshadventurer
+build_flags =
+  ${Meshadventurer.build_flags}
+  -D RADIO_CLASS=CustomSX1268
+  -D WRAPPER_CLASS=CustomSX1268Wrapper
+  -D LORA_TX_POWER=22
+  -D MAX_CONTACTS=100
+  -D MAX_GROUP_CHANNELS=1
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+build_src_filter = ${Meshadventurer.build_src_filter}
+  +<../examples/simple_secure_chat/main.cpp>
+  +<helpers/ui/SSD1306Display.cpp>
+lib_deps =
+  ${Meshadventurer.lib_deps}
+  densaugeo/base64 @ ~1.4.0
+
+[env:Meshadventurer_sx1268_room_server]
+extends = Meshadventurer
+build_flags =
+  ${Meshadventurer.build_flags}
+  -D RADIO_CLASS=CustomSX1268
+  -D WRAPPER_CLASS=CustomSX1268Wrapper
+  -D LORA_TX_POWER=22
+  -D ADVERT_NAME='"Meshadventurer Room"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D ROOM_PASSWORD='"hello"'
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+build_src_filter = ${Meshadventurer.build_src_filter}
+  +<../examples/simple_room_server>
+  +<helpers/ui/SSD1306Display.cpp>
+lib_deps =
+  ${Meshadventurer.lib_deps}
+  ${esp32_ota.lib_deps}

variants/meshadventurer/target.cpp

@@ -0,0 +1,119 @@
+#include <Arduino.h>
+#include "target.h"
+
+#include <helpers/sensors/MicroNMEALocationProvider.h>
+
+MeshadventurerBoard board;
+
+static SPIClass spi;
+RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_1, P_LORA_RESET, P_LORA_BUSY, spi);
+WRAPPER_CLASS radio_driver(radio, board);
+
+ESP32RTCClock fallback_clock;
+AutoDiscoverRTCClock rtc_clock(fallback_clock);
+MicroNMEALocationProvider nmea = MicroNMEALocationProvider(Serial1);
+MASensorManager sensors = MASensorManager(nmea);
+
+#ifdef DISPLAY_CLASS
+  DISPLAY_CLASS display;
+#endif
+
+#ifndef LORA_CR
+  #define LORA_CR      5
+#endif
+
+bool radio_init() {
+  fallback_clock.begin();
+  rtc_clock.begin(Wire);
+
+#if defined(P_LORA_SCLK)
+  return radio.std_init(&spi);
+#else
+  return radio.std_init();
+#endif
+}
+
+uint32_t radio_get_rng_seed() {
+  return radio.random(0x7FFFFFFF);
+}
+
+void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
+  radio.setFrequency(freq);
+  radio.setSpreadingFactor(sf);
+  radio.setBandwidth(bw);
+  radio.setCodingRate(cr);
+}
+
+void radio_set_tx_power(uint8_t dbm) {
+  radio.setOutputPower(dbm);
+}
+
+mesh::LocalIdentity radio_new_identity() {
+  RadioNoiseListener rng(radio);
+  return mesh::LocalIdentity(&rng);  // create new random identity
+}
+
+void MASensorManager::start_gps() {
+  if(!gps_active) {
+    MESH_DEBUG_PRINTLN("starting GPS");
+    gps_active = true;
+  }
+}
+
+void MASensorManager::stop_gps() {
+  if(gps_active) {
+    MESH_DEBUG_PRINTLN("stopping GPS");
+    gps_active = false;
+  }
+}
+
+bool MASensorManager::begin() {
+  Serial1.setPins(PIN_GPS_RX, PIN_GPS_TX);
+  Serial1.begin(9600);
+  delay(500);
+  return true;
+}
+
+bool MASensorManager::querySensors(uint8_t requester_permissions, CayenneLPP& telemetry) {
+  if(requester_permissions & TELEM_PERM_LOCATION) {   // does requester have permission?
+    telemetry.addGPS(TELEM_CHANNEL_SELF, node_lat, node_lon, node_altitude);
+  }
+  return true;
+}
+
+void MASensorManager::loop() {
+  static long next_gps_update = 0;
+  _location->loop();
+  if(millis() > next_gps_update && gps_active) {
+    if(_location->isValid()) {
+      node_lat = ((double)_location->getLatitude()) / 1000000.;
+      node_lon = ((double)_location->getLongitude()) / 1000000.;
+      node_altitude = ((double)_location->getAltitude()) / 1000.0;
+      MESH_DEBUG_PRINTLN("lat %f lon %f", node_lat, node_lon);
+    }
+    next_gps_update = millis() + 1000;
+  }
+}
+
+int MASensorManager::getNumSettings() const { return 1; }  // just one supported: "gps" (power switch)
+
+const char* MASensorManager::getSettingName(int i) const {
+  return i == 0 ? "gps" : NULL;
+}
+const char* MASensorManager::getSettingValue(int i) const {
+  if(i == 0) {
+    return gps_active ? "1" : "0";
+  }
+  return NULL;
+}
+bool MASensorManager::setSettingValue(const char* name, const char* value) {
+  if(strcmp(name, "gps") == 0) {
+    if(strcmp(value, "0") == 0) {
+      stop_gps();
+    } else {
+      start_gps();
+    }
+    return true;
+  }
+  return false;  // not supported
+}

variants/meshadventurer/target.h

@@ -0,0 +1,46 @@
+#pragma once
+
+#define RADIOLIB_STATIC_ONLY 1
+#include <RadioLib.h>
+#include <helpers/radiolib/RadioLibWrappers.h>
+#include <helpers/MeshadventurerBoard.h>
+#include <helpers/radiolib/CustomSX1262Wrapper.h>
+#include <helpers/radiolib/CustomSX1268Wrapper.h>
+#include <helpers/AutoDiscoverRTCClock.h>
+#include <helpers/SensorManager.h>
+#include <helpers/sensors/LocationProvider.h>
+#ifdef DISPLAY_CLASS
+  #include <helpers/ui/SSD1306Display.h>
+#endif
+
+class MASensorManager : public SensorManager {
+  bool gps_active = false;
+  LocationProvider * _location;
+
+  void start_gps();
+  void stop_gps();
+public:
+  MASensorManager(LocationProvider &location): _location(&location) { }
+  bool begin() override;
+  bool querySensors(uint8_t requester_permissions, CayenneLPP& telemetry) override;
+  void loop() override;
+  int getNumSettings() const override;
+  const char* getSettingName(int i) const override;
+  const char* getSettingValue(int i) const override;
+  bool setSettingValue(const char* name, const char* value) override;
+};
+
+extern MeshadventurerBoard board;
+extern WRAPPER_CLASS radio_driver;
+extern AutoDiscoverRTCClock rtc_clock;
+extern MASensorManager sensors;
+
+#ifdef DISPLAY_CLASS
+  extern DISPLAY_CLASS display;
+#endif
+
+bool radio_init();
+uint32_t radio_get_rng_seed();
+void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
+void radio_set_tx_power(uint8_t dbm);
+mesh::LocalIdentity radio_new_identity();

variants/meshadventurer/variant.h

@@ -0,0 +1,44 @@
+// For OLED LCD
+#define I2C_SDA 21
+#define I2C_SCL 22
+
+// For GPS, 'undef's not needed
+#define GPS_TX_PIN 15
+#define GPS_RX_PIN 12
+#define PIN_GPS_EN 4
+#define GPS_POWER_TOGGLE // Moved definition from platformio.ini to here
+
+#define BUTTON_PIN 39  // The middle button GPIO on the T-Beam
+#define BATTERY_PIN 35 // A battery voltage measurement pin, voltage divider connected here to measure battery voltage
+#define ADC_CHANNEL ADC1_GPIO35_CHANNEL
+#define ADC_MULTIPLIER 2
+#define EXT_PWR_DETECT 4    // Pin to detect connected external power source for LILYGO® TTGO T-Energy T18 and other DIY boards
+#define EXT_NOTIFY_OUT 12   // Overridden default pin to use for Ext Notify Module (#975).
+#define LED_PIN 2           // add status LED (compatible with core-pcb and DIY targets)
+
+// Radio
+#define USE_SX1262 // E22-900M30S uses SX1262
+#define USE_SX1268 // E22-400M30S uses SX1268
+#define SX126X_MAX_POWER 22 // Outputting 22dBm from SX1262 results in ~30dBm E22-900M30S output (module only uses last stage of the YP2233W PA)
+#define SX126X_DIO3_TCXO_VOLTAGE 1.8 // E22 series TCXO reference voltage is 1.8V
+
+#define SX126X_CS 18    // EBYTE module's NSS pin
+#define SX126X_SCK 5    // EBYTE module's SCK pin
+#define SX126X_MOSI 27  // EBYTE module's MOSI pin
+#define SX126X_MISO 19  // EBYTE module's MISO pin
+#define SX126X_RESET 23 // EBYTE module's NRST pin
+#define SX126X_BUSY 32  // EBYTE module's BUSY pin
+#define SX126X_DIO1 33  // EBYTE module's DIO1 pin
+
+// The E22's TXEN pin is connected to MCU pin, E22's RXEN pin is connected to MCU pin (allows for ramping up PA before transmission
+// Don't define DIO2_AS_RF_SWITCH because we only use DIO2 or an MCU pin mutually exclusively to connect to E22's TXEN (to prevent
+// a short if they are both connected at the same time and there's a slight non-neglibible delay and/or voltage difference between
+// DIO2 and TXEN).
+#define SX126X_TXEN 13 // Schematic connects EBYTE module's TXEN pin to MCU
+#define SX126X_RXEN 14 // Schematic connects EBYTE module's RXEN pin to MCU
+
+#define LORA_CS SX126X_CS     // Compatibility with variant file configuration structure
+#define LORA_SCK SX126X_SCK   // Compatibility with variant file configuration structure
+#define LORA_MOSI SX126X_MOSI // Compatibility with variant file configuration structure
+#define LORA_MISO SX126X_MISO // Compatibility with variant file configuration structure
+#define LORA_DIO1 SX126X_DIO1 // Compatibility with variant file configuration structure

variants/minewsemi_me25ls01/MinewsemiME25LS01Board.cpp

@@ -0,0 +1,91 @@
+#include <Arduino.h>
+#include "MinewsemiME25LS01Board.h"
+#include <Wire.h>
+
+#include <bluefruit.h>
+
+void MinewsemiME25LS01Board::begin() {
+  // for future use, sub-classes SHOULD call this from their begin()
+  startup_reason = BD_STARTUP_NORMAL;
+  btn_prev_state = HIGH;
+  
+  pinMode(PIN_VBAT_READ, INPUT);
+
+  sd_power_mode_set(NRF_POWER_MODE_LOWPWR);
+
+#ifdef BUTTON_PIN
+  pinMode(BUTTON_PIN, INPUT);
+  pinMode(LED_PIN, OUTPUT);
+#endif
+
+#if defined(PIN_BOARD_SDA) && defined(PIN_BOARD_SCL)
+  Wire.setPins(PIN_BOARD_SDA, PIN_BOARD_SCL);
+#endif
+
+  Wire.begin();
+  
+#ifdef P_LORA_TX_LED
+  pinMode(P_LORA_TX_LED, OUTPUT);
+  digitalWrite(P_LORA_TX_LED, LOW);
+#endif
+
+  delay(10);   // give sx1262 some time to power up
+}
+
+static BLEDfu bledfu;
+
+static void connect_callback(uint16_t conn_handle) {
+  (void)conn_handle;
+  MESH_DEBUG_PRINTLN("BLE client connected");
+}
+
+static void disconnect_callback(uint16_t conn_handle, uint8_t reason) {
+  (void)conn_handle;
+  (void)reason;
+
+  MESH_DEBUG_PRINTLN("BLE client disconnected");
+}
+
+
+bool MinewsemiME25LS01Board::startOTAUpdate(const char* id, char reply[]) {
+  // Config the peripheral connection with maximum bandwidth
+  // more SRAM required by SoftDevice
+  // Note: All config***() function must be called before begin()
+  Bluefruit.configPrphBandwidth(BANDWIDTH_MAX);
+  Bluefruit.configPrphConn(92, BLE_GAP_EVENT_LENGTH_MIN, 16, 16);
+
+  Bluefruit.begin(1, 0);
+  // Set max power. Accepted values are: -40, -30, -20, -16, -12, -8, -4, 0, 4
+  Bluefruit.setTxPower(4);
+  // Set the BLE device name
+  Bluefruit.setName("Minewsemi_OTA");
+
+  Bluefruit.Periph.setConnectCallback(connect_callback);
+  Bluefruit.Periph.setDisconnectCallback(disconnect_callback);
+
+  // To be consistent OTA DFU should be added first if it exists
+  bledfu.begin();
+
+  // Set up and start advertising
+  // Advertising packet
+  Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
+  Bluefruit.Advertising.addTxPower();
+  Bluefruit.Advertising.addName();
+
+  /* Start Advertising
+    - Enable auto advertising if disconnected
+    - Interval:  fast mode = 20 ms, slow mode = 152.5 ms
+    - Timeout for fast mode is 30 seconds
+    - Start(timeout) with timeout = 0 will advertise forever (until connected)
+
+    For recommended advertising interval
+    https://developer.apple.com/library/content/qa/qa1931/_index.html
+  */
+  Bluefruit.Advertising.restartOnDisconnect(true);
+  Bluefruit.Advertising.setInterval(32, 244); // in unit of 0.625 ms
+  Bluefruit.Advertising.setFastTimeout(30);   // number of seconds in fast mode
+  Bluefruit.Advertising.start(0);             // 0 = Don't stop advertising after n seconds
+
+  strcpy(reply, "OK - started");
+  return true;
+}

variants/minewsemi_me25ls01/MinewsemiME25LS01Board.h

@@ -0,0 +1,88 @@
+#pragma once
+
+#include <MeshCore.h>
+#include <Arduino.h>
+
+// LoRa and SPI pins
+
+#define  P_LORA_DIO_1   (32 + 12)  // P1.12
+#define  P_LORA_NSS     (32 + 13)  // P1.13
+#define  P_LORA_RESET   (32 + 11)  // P1.11
+#define  P_LORA_BUSY    (32 + 10)  // P1.10
+#define  P_LORA_SCLK    (32 + 15)  // P1.15
+#define  P_LORA_MISO    (0 + 29)   // P0.29
+#define  P_LORA_MOSI    (0 + 2)    // P0.2
+ 
+#define LR11X0_DIO_AS_RF_SWITCH  true
+#define LR11X0_DIO3_TCXO_VOLTAGE   1.6
+
+#define  PIN_VBAT_READ BATTERY_PIN
+#define  ADC_MULTIPLIER   (1.815f) // dependent on voltage divider resistors. TODO: more accurate battery tracking
+
+
+class MinewsemiME25LS01Board : public mesh::MainBoard {
+protected:
+  uint8_t startup_reason;
+  uint8_t btn_prev_state;
+
+public:
+  void begin();
+
+#define BATTERY_SAMPLES 8
+
+  uint16_t getBattMilliVolts() override {
+    analogReadResolution(12);
+
+    uint32_t raw = 0;
+    for (int i = 0; i < BATTERY_SAMPLES; i++) {
+      raw += analogRead(PIN_VBAT_READ);
+    }
+    raw = raw / BATTERY_SAMPLES;
+    return (ADC_MULTIPLIER * raw);
+  }
+
+  uint8_t getStartupReason() const override { return startup_reason; }
+
+  const char* getManufacturerName() const override {
+    return "Minewsemi";
+  }
+
+  void powerOff() override {
+    #ifdef HAS_GPS
+        digitalWrite(GPS_VRTC_EN, LOW);
+        digitalWrite(GPS_RESET, LOW);
+        digitalWrite(GPS_SLEEP_INT, LOW);
+        digitalWrite(GPS_RTC_INT, LOW);
+        pinMode(GPS_RESETB, OUTPUT);
+        digitalWrite(GPS_RESETB, LOW);
+    #endif
+    
+    #ifdef BUZZER_EN
+        digitalWrite(BUZZER_EN, LOW);
+    #endif
+    
+    #ifdef LED_PIN
+    digitalWrite(LED_PIN, LOW);
+    #endif
+    #ifdef BUTTON_PIN
+    nrf_gpio_cfg_sense_input(digitalPinToInterrupt(BUTTON_PIN), NRF_GPIO_PIN_PULLUP, NRF_GPIO_PIN_SENSE_HIGH);
+    #endif
+    sd_power_system_off();
+  }
+
+  #if defined(P_LORA_TX_LED)
+  void onBeforeTransmit() override {
+    digitalWrite(P_LORA_TX_LED, HIGH);// turn TX LED on
+  }
+  void onAfterTransmit() override {
+    digitalWrite(P_LORA_TX_LED, LOW); // turn TX LED off
+  }
+#endif
+
+
+  void reboot() override {
+    NVIC_SystemReset();
+  }
+
+  bool startOTAUpdate(const char* id, char reply[]) override;
+};

variants/minewsemi_me25ls01/NullDisplayDriver.h

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <helpers/ui/DisplayDriver.h>
+
+class NullDisplayDriver : public DisplayDriver {
+public:
+  NullDisplayDriver() : DisplayDriver(128, 64) { }
+  bool begin() { return false; }   // not present
+
+  bool isOn() override { return false; }
+  void turnOn() override { }
+  void turnOff() override { }
+  void clear() override { }
+  void startFrame(Color bkg = DARK) override { }
+  void setTextSize(int sz) override { }
+  void setColor(Color c) override { }
+  void setCursor(int x, int y) override { }
+  void print(const char* str) override { }
+  void fillRect(int x, int y, int w, int h) override { }
+  void drawRect(int x, int y, int w, int h) override { }
+  void drawXbm(int x, int y, const uint8_t* bits, int w, int h) override { }
+  uint16_t getTextWidth(const char* str) override { return 0; }
+  void endFrame() { }
+};

variants/minewsemi_me25ls01/platformio.ini

@@ -0,0 +1,164 @@
+; ----------------- NRF52 me25ls01---------------------
+[nrf52840_me25ls01]
+extends = nrf52_base
+platform_packages = framework-arduinoadafruitnrf52
+build_flags = ${nrf52_base.build_flags}
+  -I src/helpers/nrf52
+  -I lib/nrf52/s140_nrf52_7.3.0_API/include
+  -I lib/nrf52/s140_nrf52_7.3.0_API/include/nrf52
+lib_ignore =
+  BluetoothOTA
+  lib5b4
+lib_deps =
+  ${nrf52_base.lib_deps}
+  rweather/Crypto @ ^0.4.0
+
+[me25ls01]
+extends = nrf52840_me25ls01
+board = minewsemi_me25ls01
+board_build.ldscript = boards/nrf52840_s140_v7.ld
+build_flags = ${nrf52840_me25ls01.build_flags}
+  -I variants/minewsemi_me25ls01
+  -D me25ls01
+  -D PIN_USER_BTN=27
+  -D USER_BTN_PRESSED=HIGH
+  -D PIN_STATUS_LED=39
+  -D P_LORA_TX_LED=22
+  -D RADIO_CLASS=CustomLR1110
+  -D WRAPPER_CLASS=CustomLR1110Wrapper
+  -D LORA_TX_POWER=22
+  -D ENV_INCLUDE_GPS=0
+  -D ENV_INCLUDE_AHTX0=1
+  -D ENV_INCLUDE_BME280=1
+  -D ENV_INCLUDE_INA3221=1
+  -D ENV_INCLUDE_INA219=1
+build_src_filter = ${nrf52840_me25ls01.build_src_filter}
+  +<helpers/*.cpp>
+  +<../variants/minewsemi_me25ls01>
+  +<helpers/sensors>
+debug_tool = jlink
+upload_protocol = nrfutil
+lib_deps = ${nrf52840_me25ls01.lib_deps}
+  densaugeo/base64 @ ~1.4.0
+  stevemarple/MicroNMEA @ ^2.0.6
+  end2endzone/NonBlockingRTTTL@^1.3.0
+  adafruit/Adafruit SSD1306 @ ^2.5.13
+  adafruit/Adafruit INA3221 Library @ ^1.0.1
+  adafruit/Adafruit INA219 @ ^1.2.3
+  adafruit/Adafruit AHTX0 @ ^2.0.5
+  adafruit/Adafruit BME280 Library @ ^2.3.0  
+
+[env:Minewsemi_me25ls01_companion_radio_ble]
+extends = me25ls01
+build_flags = ${me25ls01.build_flags}
+  -D MAX_CONTACTS=100
+  -D MAX_GROUP_CHANNELS=8
+  -D BLE_PIN_CODE=123456
+;  -D BLE_DEBUG_LOGGING=1
+  -D MESH_PACKET_LOGGING=1
+  -D MESH_DEBUG=1
+  -D OFFLINE_QUEUE_SIZE=256
+  -D RX_BOOSTED_GAIN=true
+  -D RF_SWITCH_TABLE
+  -D DISPLAY_CLASS=NullDisplayDriver
+  ;-D PIN_BUZZER=25
+  ;-D PIN_BUZZER_EN=37      
+build_src_filter = ${me25ls01.build_src_filter}
+  +<helpers/nrf52/SerialBLEInterface.cpp>
+  +<../examples/companion_radio/*.cpp>
+lib_deps = ${me25ls01.lib_deps}
+  adafruit/RTClib @ ^2.1.3
+ 
+
+[env:Minewsemi_me25ls01_repeater]
+extends = me25ls01
+build_flags = ${me25ls01.build_flags}
+  -D MAX_CONTACTS=100
+  -D MAX_GROUP_CHANNELS=8
+  -D BLE_PIN_CODE=123456
+;  -D BLE_DEBUG_LOGGING=1
+  -D MESH_PACKET_LOGGING=1
+  -D MESH_DEBUG=1
+  -D OFFLINE_QUEUE_SIZE=256
+  -D RX_BOOSTED_GAIN=true
+  -D RF_SWITCH_TABLE
+  -D ADVERT_NAME='"ME25LS01 Repeater"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D MAX_NEIGHBOURS=8
+  -D DISPLAY_CLASS=NullDisplayDriver
+build_src_filter = ${me25ls01.build_src_filter}
+  +<../examples/simple_repeater>
+lib_deps = ${me25ls01.lib_deps}
+  adafruit/RTClib @ ^2.1.3
+
+
+
+[env:Minewsemi_me25ls01_room_server]
+extends = me25ls01
+build_flags = ${me25ls01.build_flags}
+  -D MAX_CONTACTS=100
+  -D MAX_GROUP_CHANNELS=8
+;  -D BLE_PIN_CODE=123456
+;  -D BLE_DEBUG_LOGGING=1
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+  -D OFFLINE_QUEUE_SIZE=256
+  -D RX_BOOSTED_GAIN=true
+  -D RF_SWITCH_TABLE
+  -D ADVERT_NAME='"ME25LS01 Room"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D ROOM_PASSWORD='"hello"'
+  -D MAX_NEIGHBOURS=8
+  -D DISPLAY_CLASS=NullDisplayDriver
+build_src_filter = ${me25ls01.build_src_filter}
+  +<../examples/simple_room_server>
+lib_deps = ${me25ls01.lib_deps}
+  adafruit/RTClib @ ^2.1.3
+
+[env:Minewsemi_me25ls01_terminal_chat]
+extends = me25ls01
+build_flags = ${me25ls01.build_flags}
+  -D MAX_CONTACTS=100
+  -D MAX_GROUP_CHANNELS=8
+  -D BLE_PIN_CODE=123456
+;  -D BLE_DEBUG_LOGGING=1
+  -D MESH_PACKET_LOGGING=1
+  -D MESH_DEBUG=1
+  -D OFFLINE_QUEUE_SIZE=256
+  -D RX_BOOSTED_GAIN=true
+  -D RF_SWITCH_TABLE
+  -D ADVERT_NAME='"ME25LS01 Chat"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D ROOM_PASSWORD='"hello"'
+  -D MAX_NEIGHBOURS=8
+  -D DISPLAY_CLASS=NullDisplayDriver
+build_src_filter = ${me25ls01.build_src_filter}
+  +<../examples/simple_secure_chat/main.cpp>
+lib_deps = ${me25ls01.lib_deps}
+  adafruit/RTClib @ ^2.1.3
+
+[env:Minewsemi_me25ls01_companion_radio_usb]
+extends = me25ls01
+build_flags = ${me25ls01.build_flags}
+  -D MAX_CONTACTS=100
+  -D MAX_GROUP_CHANNELS=8
+  ;-D BLE_PIN_CODE=123456
+;  -D BLE_DEBUG_LOGGING=1
+  -D MESH_PACKET_LOGGING=1
+  -D MESH_DEBUG=1
+  -D OFFLINE_QUEUE_SIZE=256
+  -D RX_BOOSTED_GAIN=true
+  -D RF_SWITCH_TABLE
+  -D DISPLAY_CLASS=NullDisplayDriver
+build_src_filter = ${me25ls01.build_src_filter}
+  +<helpers/nrf52/*.cpp>
+  +<../examples/companion_radio>
+lib_deps = ${me25ls01.lib_deps}
+  adafruit/RTClib @ ^2.1.3
+

variants/minewsemi_me25ls01/target.cpp

@@ -0,0 +1,98 @@
+#include <Arduino.h>
+#include "target.h"
+
+MinewsemiME25LS01Board board;
+
+RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_1, P_LORA_RESET, P_LORA_BUSY, SPI);
+
+WRAPPER_CLASS radio_driver(radio, board);
+
+VolatileRTCClock rtc_clock;
+extern EnvironmentSensorManager sensors;
+#if ENV_INCLUDE_GPS
+  #include <helpers/sensors/MicroNMEALocationProvider.h>
+  MicroNMEALocationProvider nmea = MicroNMEALocationProvider(Serial1, &rtc_clock);
+  EnvironmentSensorManager sensors = EnvironmentSensorManager(nmea);
+#else
+  EnvironmentSensorManager sensors;
+#endif
+
+#ifdef DISPLAY_CLASS
+  NullDisplayDriver display;
+#endif
+
+#ifndef LORA_CR
+  #define LORA_CR      5
+#endif
+
+#ifdef RF_SWITCH_TABLE
+static const uint32_t rfswitch_dios[Module::RFSWITCH_MAX_PINS] = {
+  RADIOLIB_LR11X0_DIO5,
+  RADIOLIB_LR11X0_DIO6,
+  RADIOLIB_LR11X0_DIO7,
+  RADIOLIB_LR11X0_DIO8, 
+  RADIOLIB_NC
+};
+
+static const Module::RfSwitchMode_t rfswitch_table[] = {
+  // mode                 DIO5  DIO6  DIO7  DIO8
+  { LR11x0::MODE_STBY,   {LOW,  LOW,  LOW,  LOW  }},  
+  { LR11x0::MODE_RX,     {HIGH, LOW,  LOW,  HIGH }},
+  { LR11x0::MODE_TX,     {HIGH, HIGH, LOW,  HIGH }},
+  { LR11x0::MODE_TX_HP,  {LOW,  HIGH, LOW,  HIGH }},
+  { LR11x0::MODE_TX_HF,  {LOW,  LOW,  LOW,  LOW  }}, 
+  { LR11x0::MODE_GNSS,   {LOW,  LOW,  HIGH, LOW  }},
+  { LR11x0::MODE_WIFI,   {LOW,  LOW,  LOW,  LOW  }},  
+  END_OF_MODE_TABLE,
+};
+#endif
+
+bool radio_init() {
+  //rtc_clock.begin(Wire);
+  
+#ifdef LR11X0_DIO3_TCXO_VOLTAGE
+  float tcxo = LR11X0_DIO3_TCXO_VOLTAGE;
+#else
+  float tcxo = 1.6f;
+#endif
+
+  SPI.setPins(P_LORA_MISO, P_LORA_SCLK, P_LORA_MOSI);
+  SPI.begin();
+  int status = radio.begin(LORA_FREQ, LORA_BW, LORA_SF, LORA_CR, RADIOLIB_LR11X0_LORA_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
+  }
+  
+  radio.setCRC(1);
+
+#ifdef RF_SWITCH_TABLE
+  radio.setRfSwitchTable(rfswitch_dios, rfswitch_table);
+#endif
+#ifdef RX_BOOSTED_GAIN
+  radio.setRxBoostedGainMode(RX_BOOSTED_GAIN);
+#endif
+
+  return true;  // success
+}
+
+uint32_t radio_get_rng_seed() {
+  return radio.random(0x7FFFFFFF);
+}
+
+void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
+  radio.setFrequency(freq);
+  radio.setSpreadingFactor(sf);
+  radio.setBandwidth(bw);
+  radio.setCodingRate(cr);
+}
+
+void radio_set_tx_power(uint8_t dbm) {
+  radio.setOutputPower(dbm);
+}
+
+mesh::LocalIdentity radio_new_identity() {
+  RadioNoiseListener rng(radio);
+  return mesh::LocalIdentity(&rng);  // create new random identity
+}

variants/minewsemi_me25ls01/target.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#define RADIOLIB_STATIC_ONLY 1
+#include <RadioLib.h>
+#include <helpers/radiolib/RadioLibWrappers.h>
+#include <MinewsemiME25LS01Board.h>
+#include <helpers/radiolib/CustomLR1110Wrapper.h>
+#include <helpers/ArduinoHelpers.h>
+#include <helpers/SensorManager.h>
+#include <helpers/sensors/LocationProvider.h>
+#include <helpers/sensors/EnvironmentSensorManager.h>
+#ifdef DISPLAY_CLASS
+  #include "NullDisplayDriver.h"
+#endif
+
+#ifdef DISPLAY_CLASS
+  extern NullDisplayDriver display;
+#endif
+
+extern MinewsemiME25LS01Board board;
+extern WRAPPER_CLASS radio_driver;
+extern VolatileRTCClock rtc_clock;
+extern EnvironmentSensorManager sensors;
+
+bool radio_init();
+uint32_t radio_get_rng_seed();
+void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
+void radio_set_tx_power(uint8_t dbm);
+mesh::LocalIdentity radio_new_identity();

variants/minewsemi_me25ls01/variant.cpp

@@ -0,0 +1,70 @@
+#include "variant.h"
+#include "wiring_constants.h"
+#include "wiring_digital.h"
+
+const uint32_t g_ADigitalPinMap[PINS_COUNT + 1] =
+{
+  0,  // P0.00
+  1,  // P0.01
+  2,  // P0.02
+  3,  // P0.03
+  4,  // P0.04
+  5,  // P0.05
+  6,  // P0.06
+  7,  // P0.07
+  8,  // P0.08
+  9,  // P0.09
+  10, // P0.10
+  11, // P0.11
+  12, // P0.12
+  13, // P0.13, PIN_SERIAL1_TX
+  14, // P0.14, PIN_SERIAL1_RX
+  15, // P0.15, PIN_SERIAL2_RX
+  16, // P0.16, PIN_WIRE_SCL
+  17, // P0.17, PIN_SERIAL2_TX
+  18, // P0.18
+  19, // P0.19
+  20, // P0.20
+  21, // P0.21, PIN_WIRE_SDA
+  22, // P0.22
+  23, // P0.23
+  24, // P0.24, 
+  25, // P0.25, 
+  26, // P0.26, 
+  27, // P0.27, 
+  28, // P0.28
+  29, // P0.29, 
+  30, // P0.30
+  31, // P0.31, BATTERY_PIN
+  32, // P1.00
+  33, // P1.01, LORA_DIO_1
+  34, // P1.02
+  35, // P1.03, 
+  36, // P1.04
+  37, // P1.05, LR1110_EN
+  38, // P1.06, 
+  39, // P1.07, 
+  40, // P1.08, PIN_SPI_MISO
+  41, // P1.09, PIN_SPI_MOSI
+  42, // P1.10, LORA_RESET
+  43, // P1.11, GPS_EN
+  44, // P1.12, GPS_SLEEP_INT
+  45, // P1.13
+  46, // P1.14, GPS_RESETB
+  47, // P1.15, PIN_GPS_RESET
+  255,  // NRFX_SPIM_PIN_NOT_USED
+};
+
+void initVariant()
+{
+  pinMode(BATTERY_PIN, INPUT);
+  pinMode(PIN_BUTTON1, INPUT);
+
+  // pinMode(PIN_3V3_EN, OUTPUT);
+  // pinMode(PIN_3V3_ACC_EN, OUTPUT);
+  pinMode(LED_PIN, OUTPUT);
+  pinMode(P_LORA_TX_LED, OUTPUT);
+
+  digitalWrite(LED_PIN, HIGH);
+  digitalWrite(P_LORA_TX_LED, LOW);
+}

variants/minewsemi_me25ls01/variant.h

@@ -0,0 +1,94 @@
+#pragma once
+
+#include "WVariant.h"
+
+// Low frequency clock source
+#define USE_LFXO    // 32.768 kHz crystal oscillator
+#define VARIANT_MCK (64000000ul)
+// #define USE_LFRC    // 32.768 kHz RC oscillator
+
+// Power
+#define BATTERY_PIN             (31)
+#define BATTERY_IMMUTABLE
+#define ADC_MULTIPLIER          (2.0F)
+
+#define ADC_RESOLUTION          (14)
+#define BATTERY_SENSE_RES       (12)
+
+// Number of pins
+#define PINS_COUNT              (48)
+#define NUM_DIGITAL_PINS        (48)
+#define NUM_ANALOG_INPUTS       (6)
+#define NUM_ANALOG_OUTPUTS      (0)
+
+// UART pin definition
+#define PIN_SERIAL1_RX          (14)             // P0.14
+#define PIN_SERIAL1_TX          (13)             // P0.13
+
+#define PIN_SERIAL2_RX          (15)             // P0.15
+#define PIN_SERIAL2_TX          (17)             // P0.17
+
+// I2C pin definition
+#define HAS_WIRE                (1)     
+#define WIRE_INTERFACES_COUNT   (1)     
+
+#define PIN_WIRE_SDA            (21)             // P0.21
+#define PIN_WIRE_SCL            (16)             // P0.16
+#define I2C_NO_RESCAN
+
+// SPI pin definition
+#define SPI_INTERFACES_COUNT    (1)
+
+#define PIN_SPI_MISO            (0 + 29)            // P0.29
+#define PIN_SPI_MOSI            (0 + 2)             // P0.2
+#define PIN_SPI_SCK             (32 + 15)           // P1.15
+#define PIN_SPI_NSS             (32 + 13)           // P1.13
+
+// Builtin LEDs
+#define LED_BUILTIN             (-1)
+#define LED_RED                (32 + 5)            // P1.5
+#define LED_BLUE               (32 + 7)            // P1.7 
+#define LED_PIN                 LED_BLUE
+#define P_LORA_TX_LED           LED_RED
+
+#define LED_STATE_ON            HIGH
+
+// Builtin buttons
+
+#define PIN_BUTTON1             (0 + 27)             // P0.6
+#define BUTTON_PIN              PIN_BUTTON1
+
+// LR1110
+#define LORA_DIO_1              (32 + 12)           // P1.12
+#define LORA_DIO_2              (32 + 10)           // P1.10 
+#define LORA_NSS                (PIN_SPI_NSS)       // P1.13
+#define LORA_RESET              (32 + 11)           // P1.11 
+#define LORA_BUSY               (32 + 10)           // P1.10
+#define LORA_SCLK               (PIN_SPI_SCK)       // P1.15
+#define LORA_MISO               (PIN_SPI_MISO)      // P0.29
+#define LORA_MOSI               (PIN_SPI_MOSI)      // P0.2
+#define LORA_CS                 PIN_SPI_NSS         // P1.13
+ 
+#define LR11X0_DIO_AS_RF_SWITCH    true
+#define LR11X0_DIO3_TCXO_VOLTAGE   1.6
+
+#define LR1110_IRQ_PIN LORA_DIO_1
+#define LR1110_NRESET_PIN LORA_RESET
+#define LR1110_BUSY_PIN LORA_DIO_2
+#define LR1110_SPI_NSS_PIN LORA_CS
+#define LR1110_SPI_SCK_PIN LORA_SCLK
+#define LR1110_SPI_MOSI_PIN LORA_MOSI
+#define LR1110_SPI_MISO_PIN LORA_MISO
+
+// GPS
+#define HAS_GPS                 0
+#define GPS_RX_PIN              PIN_SERIAL1_RX
+#define GPS_TX_PIN              PIN_SERIAL1_TX
+
+#define GPS_EN                  (-1)            // P1.11
+#define GPS_RESET               (-1)            // P1.15
+
+#define GPS_VRTC_EN             (-1)             // P0.8
+#define GPS_SLEEP_INT           (-1)            // P1.12
+#define GPS_RTC_INT             (-1)            // P0.15
+#define GPS_RESETB              (-1)            // P1.14

variants/nano_g2_ultra/platformio.ini

@@ -36,7 +36,7 @@ build_flags =
   -I src/helpers/ui
   -D MAX_CONTACTS=100
   -D MAX_GROUP_CHANNELS=8
-  -D BLE_PIN_CODE=0
+  -D BLE_PIN_CODE=123456
   -D BLE_DEBUG_LOGGING=1
   -D OFFLINE_QUEUE_SIZE=256
   -D DISPLAY_CLASS=SH1106Display

variants/nano_g2_ultra/target.h

@@ -3,8 +3,8 @@
 #define RADIOLIB_STATIC_ONLY 1
 #include <RadioLib.h>
 #include "nano-g2.h"
-#include <helpers/RadioLibWrappers.h>
-#include <helpers/CustomSX1262Wrapper.h>
+#include <helpers/radiolib/RadioLibWrappers.h>
+#include <helpers/radiolib/CustomSX1262Wrapper.h>
 #include <helpers/AutoDiscoverRTCClock.h>
 #include <helpers/SensorManager.h>
 #ifdef DISPLAY_CLASS
@@ -12,8 +12,7 @@
 #endif
 #include <helpers/sensors/LocationProvider.h>
 
-class NanoG2UltraSensorManager : public SensorManager
-{
+class NanoG2UltraSensorManager : public SensorManager {
   bool gps_active = false;
   LocationProvider *_location;
 

variants/picow/target.h

@@ -2,9 +2,9 @@
 
 #define RADIOLIB_STATIC_ONLY 1
 #include <RadioLib.h>
-#include <helpers/RadioLibWrappers.h>
+#include <helpers/radiolib/RadioLibWrappers.h>
 #include <helpers/rp2040/PicoWBoard.h>
-#include <helpers/CustomSX1262Wrapper.h>
+#include <helpers/radiolib/CustomSX1262Wrapper.h>
 #include <helpers/AutoDiscoverRTCClock.h>
 #include <helpers/SensorManager.h>
 

variants/promicro/platformio.ini

@@ -23,7 +23,6 @@ build_flags = ${nrf52_base.build_flags}
   -D ENV_INCLUDE_INA3221=1
   -D ENV_INCLUDE_INA219=1
 build_src_filter = ${nrf52_base.build_src_filter}
-  +<helpers/nrf52/PromicroBoard.cpp>
   +<helpers/sensors>
   +<../variants/promicro>
 lib_deps= ${nrf52_base.lib_deps}
@@ -130,7 +129,6 @@ build_flags = ${nrf52_base.build_flags}
   -D SX126X_RX_BOOSTED_GAIN=1
 build_src_filter =
   ${nrf52_base.build_src_filter}
-  +<helpers/nrf52/PromicroBoard.cpp>
   +<helpers/sensors>
   +<../variants/promicro>
 lib_deps= ${nrf52_base.lib_deps}

variants/promicro/target.h

@@ -2,10 +2,9 @@
 
 #define RADIOLIB_STATIC_ONLY 1
 #include <RadioLib.h>
-#include <helpers/RadioLibWrappers.h>
-#include <helpers/nrf52/PromicroBoard.h>
-#include <helpers/CustomSX1262Wrapper.h>
-#include <helpers/CustomLLCC68Wrapper.h>
+#include <helpers/radiolib/RadioLibWrappers.h>
+#include <PromicroBoard.h>
+#include <helpers/radiolib/CustomSX1262Wrapper.h>
 #include <helpers/AutoDiscoverRTCClock.h>
 #ifdef DISPLAY_CLASS
   #include <helpers/ui/SSD1306Display.h>
@@ -27,4 +26,3 @@ uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
 void radio_set_tx_power(uint8_t dbm);
 mesh::LocalIdentity radio_new_identity();
-

variants/rak3x72/platformio.ini

@@ -21,6 +21,14 @@ build_flags = ${rak3x72.build_flags}
 build_src_filter = ${rak3x72.build_src_filter}
   +<../examples/simple_repeater/main.cpp>
 
+[env:rak3x72-sensor]
+extends = rak3x72
+build_flags = ${rak3x72.build_flags}
+  -D ADVERT_NAME='"RAK3x72 Sensor"'
+  -D ADMIN_PASSWORD='"password"'
+build_src_filter = ${rak3x72.build_src_filter}
+  +<../examples/simple_sensor>
+
 [env:rak3x72_companion_radio_usb]
 extends = rak3x72
 build_flags = ${rak3x72.build_flags}

variants/rak3x72/target.cpp

@@ -38,7 +38,7 @@ bool radio_init() {
 
   radio.setRfSwitchTable(rfswitch_pins, rfswitch_table);
 
-  int status = radio.begin(LORA_FREQ, LORA_BW, LORA_SF, LORA_CR, RADIOLIB_SX126X_SYNC_WORD_PRIVATE, LORA_TX_POWER, 8, STM32WL_TCXO_VOLTAGE, 0); 
+  int status = radio.begin(LORA_FREQ, LORA_BW, LORA_SF, LORA_CR, RADIOLIB_SX126X_SYNC_WORD_PRIVATE, LORA_TX_POWER, 16, STM32WL_TCXO_VOLTAGE, 0); 
 
   if (status != RADIOLIB_ERR_NONE) {
     Serial.print("ERROR: radio init failed: ");

variants/rak3x72/target.h

@@ -2,9 +2,9 @@
 
 #define RADIOLIB_STATIC_ONLY 1
 #include <RadioLib.h>
-#include <helpers/RadioLibWrappers.h>
+#include <helpers/radiolib/RadioLibWrappers.h>
 #include <helpers/stm32/STM32Board.h>
-#include <helpers/CustomSTM32WLxWrapper.h>
+#include <helpers/radiolib/CustomSTM32WLxWrapper.h>
 #include <helpers/ArduinoHelpers.h>
 #include <helpers/SensorManager.h>
 
@@ -22,7 +22,7 @@ public:
         uint32_t raw = 0;
         for (int i=0; i<8;i++) {
             raw += analogRead(PIN_VBAT_READ);
-        }            
+        }
         return ((double)raw) * ADC_MULTIPLIER / 8 / 4096;
     }
 };