use BSEC2 for ESP32-C3

arch/esp32/esp32c3.ini

@@ -25,6 +25,7 @@ build_flags =
   -DCONFIG_NIMBLE_CPP_LOG_LEVEL=2
   -DCONFIG_BT_NIMBLE_MAX_CCCDS=20
   -DESP_OPENSSL_SUPPRESS_LEGACY_WARNING
+  -DUSE_BSEC2
   ;-DDEBUG_HEAP
   
 lib_deps =
@@ -35,9 +36,13 @@ lib_deps =
   h2zero/NimBLE-Arduino@^1.4.0
   https://github.com/lewisxhe/XPowersLib.git#84b7373faea3118b6c37954d52f98b8a337148d6
   https://github.com/meshtastic/ESP32_Codec2.git#633326c78ac251c059ab3a8c430fcdf25b41672f
+  boschsensortec/BSEC2 Software Library@^1.3.2200
+  boschsensortec/BME68x Sensor Library@^1.1.40407
+
 lib_ignore =
   segger_rtt
   ESP32 BLE Arduino
+  BSEC Software Library
 
 ; customize the partition table
 ; http://docs.platformio.org/en/latest/platforms/espressif32.html#partition-tables

src/modules/Telemetry/Sensor/BME680Sensor.cpp

@@ -13,8 +13,12 @@ int32_t BME680Sensor::runOnce()
         return DEFAULT_SENSOR_MINIMUM_WAIT_TIME_BETWEEN_READS;
     }
     bme680.begin(nodeTelemetrySensorsMap[sensorType], Wire);
+#ifdef USE_BSEC2
+    if (bme680.status == BSEC_OK) {
+#else
     if (bme680.bsecStatus == BSEC_OK) {
-        bme680.setConfig(bsec_config_iaq);
+#endif
+        bme680.setConfig(Default_H2S_NonH2S_config);
         loadState();
         bme680.updateSubscription(sensorList, 13, BSEC_SAMPLE_RATE_LP);
         status = 1;
@@ -22,6 +26,7 @@ int32_t BME680Sensor::runOnce()
         status = 0;
     }
 
+
     return initI2CSensor();
 }
 
@@ -30,10 +35,17 @@ void BME680Sensor::setup() {}
 bool BME680Sensor::getMetrics(meshtastic_Telemetry *measurement)
 {
     bme680.run();
+#ifdef USE_BSEC2
+    measurement->variant.environment_metrics.temperature = bme680.getData(BSEC_OUTPUT_SENSOR_HEAT_COMPENSATED_TEMPERATURE).signal;
+    measurement->variant.environment_metrics.relative_humidity = bme680.getData(BSEC_OUTPUT_SENSOR_HEAT_COMPENSATED_HUMIDITY).signal;
+    measurement->variant.environment_metrics.barometric_pressure = bme680.getData(BSEC_OUTPUT_RAW_PRESSURE).signal / 100.0F;
+    measurement->variant.environment_metrics.gas_resistance = bme680.getData(BSEC_OUTPUT_RAW_GAS).signal / 1000.0;
+#else
     measurement->variant.environment_metrics.temperature = bme680.temperature;
     measurement->variant.environment_metrics.relative_humidity = bme680.humidity;
     measurement->variant.environment_metrics.barometric_pressure = bme680.pressure / 100.0F;
     measurement->variant.environment_metrics.gas_resistance = bme680.gasResistance / 1000.0;
+#endif
     // Check if we need to save state to filesystem (every STATE_SAVE_PERIOD ms)
     updateState();
     return true;
@@ -62,12 +74,17 @@ void BME680Sensor::updateState()
     bool update = false;
     if (stateUpdateCounter == 0) {
         /* First state update when IAQ accuracy is >= 3 */
-        if (bme680.iaqAccuracy >= 3) {
+#ifdef USE_BSEC2
-            LOG_DEBUG("%s state update IAQ accuracy %u >= 3\n", sensorName, bme680.iaqAccuracy);
+        accuracy = bme680.getData(BSEC_OUTPUT_IAQ).accuracy;
+#else
+        accuracy = bme680.iaqAccuracy;
+#endif
+        if (accuracy >= 3) {
+            LOG_DEBUG("%s state update IAQ accuracy %u >= 3\n", sensorName, accuracy);
             update = true;
             stateUpdateCounter++;
         } else {
-            LOG_DEBUG("%s not updated, IAQ accuracy is %u >= 3\n", sensorName, bme680.iaqAccuracy);
+            LOG_DEBUG("%s not updated, IAQ accuracy is %u >= 3\n", sensorName, accuracy);
         }
     } else {
         /* Update every STATE_SAVE_PERIOD minutes */

src/modules/Telemetry/Sensor/BME680Sensor.h

@@ -1,22 +1,35 @@
 #include "../mesh/generated/meshtastic/telemetry.pb.h"
 #include "TelemetrySensor.h"
+#ifdef USE_BSEC2
+#include <bsec2.h>
+#else
 #include <bsec.h>
+#endif // USE_BSEC2
 
 #define STATE_SAVE_PERIOD UINT32_C(360 * 60 * 1000) // That's 6 hours worth of millis()
 
-const uint8_t bsec_config_iaq[] = {
+#ifdef USE_BSEC2
+#include "config/Default_H2S_NonH2S/Default_H2S_NonH2S.h"
+#else
+const uint8_t Default_H2S_NonH2S_config[] = {
 #include <config/generic_33v_3s_4d/bsec_iaq.txt>
 };
+#endif // USE_BSEC2
 
 class BME680Sensor : virtual public TelemetrySensor
 {
   private:
+  #ifdef USE_BSEC2
+    Bsec2 bme680;
+  #else
     Bsec bme680;
+  #endif // USE_BSEC2
 
   protected:
     virtual void setup() override;
     const char *bsecConfigFileName = "/prefs/bsec.dat";
     uint8_t bsecState[BSEC_MAX_STATE_BLOB_SIZE] = {0};
+    uint8_t accuracy = 0;
     uint16_t stateUpdateCounter = 0;
     bsec_virtual_sensor_t sensorList[13] = {BSEC_OUTPUT_IAQ,
                                             BSEC_OUTPUT_STATIC_IAQ,

variants/ai-c3/platformio.ini

@@ -5,10 +5,4 @@ board_level = extra
 build_flags = ${esp32c3_base.build_flags}
   -D PRIVATE_HW
   -I variants/ai-c3
-; as long as BSEC2 Software Library is not supported remove Sensors from build 
+
-build_src_filter = ${esp32c3_base.build_src_filter}
-  -<modules/Telemetry/EnvironmentTelemetry.cpp>
-  -<modules/Telemetry/AirQualityTelemetry.cpp>
-  -<modules/Telemetry/Sensor>
-lib_ignore = ${esp32c3_base.lib_ignore}
-  BSEC Software Library