MeshCore-mqtt-observer/examples/simple_room_server/UITask.cpp

#include "UITask.h"
#include <Arduino.h>
#include <helpers/CommonCLI.h>

#ifndef USER_BTN_PRESSED
#define USER_BTN_PRESSED LOW
#endif

#ifdef WITH_MQTT_BRIDGE
#include <WiFi.h>
#include <helpers/esp32/WebConfigServer.h>   // defines WITH_WEBCONFIG on ESP32
#endif

#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)
  snprintf(_version_info, sizeof(_version_info), "%s (%s)", version, build_date);
  free(version);
}

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);

    // meshcore website
    const char* website = "https://meshcore.io";
    _display->setColor(DisplayDriver::LIGHT);
    _display->setTextSize(1);
    uint16_t websiteWidth = _display->getTextWidth(website);
    _display->setCursor((_display->width() - websiteWidth) / 2, 22);
    _display->print(website);

    // version info
    _display->setColor(DisplayDriver::LIGHT);
    _display->setTextSize(1);
    uint16_t versionWidth = _display->getTextWidth(_version_info);
    _display->setCursor((_display->width() - versionWidth) / 2, 35);
    _display->print(_version_info);

    // node type
    const char* node_type = "< Room Server >";
    uint16_t typeWidth = _display->getTextWidth(node_type);
    _display->setCursor((_display->width() - typeWidth) / 2, 48);
    _display->print(node_type);
  } else {  // home screen
#ifdef WITH_WEBCONFIG
    if (WebConfigServer::isRebootPending()) {
      // save confirmed on-device: show ground truth even if the browser
      // lost its connection before the confirmation reached it
      _display->setTextSize(1);
      _display->setColor(DisplayDriver::GREEN);
      _display->setCursor(0, 14);
      _display->print("Config saved!");
      _display->setColor(DisplayDriver::LIGHT);
      _display->setCursor(0, 30);
      _display->print("Rebooting...");
      return;
    }
    char wc_ssid[33], wc_ip[16];
    if (WebConfigServer::getSetupInfo(wc_ssid, sizeof(wc_ssid), wc_ip, sizeof(wc_ip))) {
      // setup portal active: show join instructions instead of the home screen
      _display->setTextSize(1);
      _display->setColor(DisplayDriver::GREEN);
      _display->setCursor(0, 0);
      _display->print("Observer WiFi Setup");

      _display->setColor(DisplayDriver::LIGHT);
      _display->setCursor(0, 14);
      _display->print("Join WiFi:");
      _display->setColor(DisplayDriver::YELLOW);
      _display->setCursor(6, 24);
      _display->print(wc_ssid);

      _display->setColor(DisplayDriver::LIGHT);
      _display->setCursor(0, 40);
      _display->print("Then browse to:");
      _display->setColor(DisplayDriver::YELLOW);
      _display->setCursor(6, 50);
      _display->print(wc_ip);
      return;
    }
#endif
    // 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);

#ifdef WITH_MQTT_BRIDGE
    // Display IP address for MQTT bridge devices
    if (WiFi.status() == WL_CONNECTED) {
      IPAddress ip = WiFi.localIP();
      _display->setCursor(0, 40);
      _display->setColor(DisplayDriver::LIGHT);
      snprintf(tmp, sizeof(tmp), "IP: %d.%d.%d.%d", ip[0], ip[1], ip[2], ip[3]);
      _display->print(tmp);
    }
#endif
  }
}

void UITask::loop() {
#ifdef PIN_USER_BTN
  if (millis() >= _next_read) {
    int btnState = digitalRead(PIN_USER_BTN);
    if (btnState != _prevBtnState) {
      if (btnState == USER_BTN_PRESSED) {  // 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

#ifdef WITH_WEBCONFIG
  // While the setup portal is up there's no user button to wake the screen
  // reliably - keep it on so the join instructions stay visible.
  if (WebConfigServer::getSetupInfo(NULL, 0, NULL, 0)) {
    if (!_display->isOn()) _display->turnOn();
    _auto_off = millis() + AUTO_OFF_MILLIS;
  }
#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();
    }
  }
}