fix: checkAndAutoHealSensors skips non-DS18B20 types + BME280 boot timeout

- AppManager_Sensors.cpp: 1-Wire ROM check now skips DHT22/BME280 sensors,
  preventing false 'Sensor missing' warnings every 60s for non-1-Wire types.
- BME280Driver.h: added I2C timeout (50ms) and ACK probe before chip reset.
  Prevents boot hang when BME280 is configured but not physically present.
  begin() returns gracefully with _compLoaded=false if no device ACKs.

Author: angeloINTJ

src/AppManager_Sensors.cpp

@@ -23,6 +23,11 @@ void AppManager::checkAndAutoHealSensors( ) {
  for (uint8_t gpio = 0; gpio < MAX_SENSORS; gpio++) {
  if (!cfg.sensors[gpio].active) continue;
 
+ /* 1-Wire ROM check only applies to DS18B20 sensors.
+  * DHT22, BME280, and other types use their own driver-specific
+  * error detection — don't flag them as missing here. */
+ if (cfg.sensors[gpio].sensorType != TYPE_DS18B20) continue;
+
  uint8_t foundRom[8];
 #if SIMUT_SENSOR_DS18B20
  if (_sensorMgr->identifyPhysicalSensor(gpio, foundRom)) {
@@ -34,7 +39,7 @@ void AppManager::checkAndAutoHealSensors( ) {
  _sensorMgr->setHardwareMismatch(gpio, false);
  }
  } else {
- /* Sensor configured but not found on the physical bus */
+ /* DS18B20 configured but not found on the 1-Wire bus */
  static uint32_t lastMissingLog[MAX_SENSORS] = {0};
  if (timeSince(lastMissingLog[gpio], 60000)) {
  lastMissingLog[gpio] = millis( );

src/sensors/BME280Driver.h

@@ -99,14 +99,32 @@ struct BME280Driver {
 
     /* ── Initialization ───────────────────────────────────────────────── */
     void begin( ) {
-        /* Soft-reset the sensor */
-        writeReg(BME280_I2C_ADDR_PRIMARY, BME280_REG_RESET, BME280_RESET_CMD);
+        /* Set short I2C timeout — prevents boot hang if BME280 absent */
+        _wire->setTimeout(50); /* 50ms per operation */
+
+        /* Quick probe: does ANY device ACK at primary or secondary address? */
+        _wire->beginTransmission(BME280_I2C_ADDR_PRIMARY);
+        bool primaryAck = (_wire->endTransmission() == 0);
+        _wire->beginTransmission(BME280_I2C_ADDR_SECONDARY);
+        bool secondaryAck = (_wire->endTransmission() == 0);
+
+        if (!primaryAck && !secondaryAck) {
+            _compLoaded = false;
+            return; /* No BME280 on bus — silent, safe */
+        }
+
+        /* Soft-reset the sensor at the responding address */
+        uint8_t addr = primaryAck ? BME280_I2C_ADDR_PRIMARY : BME280_I2C_ADDR_SECONDARY;
+        writeReg(addr, BME280_REG_RESET, BME280_RESET_CMD);
         delay(10);
-        /* Try primary address; fall back to secondary */
+
+        /* Verify chip ID */
         uint8_t chipId = 0;
-        if (!readRegs(BME280_I2C_ADDR_PRIMARY, BME280_REG_CHIP_ID, &chipId, 1)
+        if (!readRegs(addr, BME280_REG_CHIP_ID, &chipId, 1)
             || chipId != BME280_CHIP_ID) {
-            if (!readRegs(BME280_I2C_ADDR_SECONDARY, BME280_REG_CHIP_ID, &chipId, 1)
+            /* Try the other address */
+            uint8_t altAddr = primaryAck ? BME280_I2C_ADDR_SECONDARY : BME280_I2C_ADDR_PRIMARY;
+            if (!readRegs(altAddr, BME280_REG_CHIP_ID, &chipId, 1)
                 || chipId != BME280_CHIP_ID) {
                 _compLoaded = false;
                 return;