Add SCD30 CO2 sensor (#861)

Author: oscgonfer

meshtastic/admin.proto

@@ -656,6 +656,11 @@ message SensorConfig {
    * SEN5X PM Sensor configuration
    */
   SEN5X_config sen5x_config = 2;
+
+  /*
+   * SCD30 CO2 Sensor configuration
+   */
+  SCD30_config scd30_config = 3;
 }
 
 message SCD4X_config {
@@ -706,3 +711,35 @@ message SEN5X_config {
    */
   optional bool set_one_shot_mode = 2;
 }
+
+message SCD30_config {
+  /*
+   * Set Automatic self-calibration enabled
+   */
+  optional bool set_asc = 1;
+
+  /*
+   * Recalibration target CO2 concentration in ppm (FRC or ASC)
+   */
+  optional uint32 set_target_co2_conc = 2;
+
+  /*
+   * Reference temperature in degC
+   */
+  optional float set_temperature = 3;
+
+  /*
+   * Altitude of sensor in meters above sea level. 0 - 3000m (overrides ambient pressure)
+   */
+  optional uint32 set_altitude = 4;
+
+  /*
+   * Power mode for sensor (true for low power, false for normal)
+   */
+  optional uint32 set_measurement_interval = 5;
+
+  /*
+   * Perform a factory reset of the sensor
+   */
+  optional bool soft_reset = 6;
+}

meshtastic/telemetry.proto

@@ -836,6 +836,7 @@ enum TelemetrySensorType {
    * SEN5X PM SENSORS
    */
   SEN5X = 43;
+
   /*
    * TSL2561 light sensor
    */
@@ -845,7 +846,7 @@ enum TelemetrySensorType {
    * BH1750 light sensor
    */
   BH1750 = 45;
-  
+
   /*
    * HDC1080 Temperature and Humidity Sensor
    */
@@ -860,6 +861,11 @@ enum TelemetrySensorType {
    * Sensirion STC31 CO2 sensor
    */
   STC31 = 48;
+
+  /*
+   * SCD30 CO2, humidity, temperature sensor
+   */
+  SCD30 = 49;
 }
 
 /*