[Bug]: RAK12039 Particulate Matter Sensor data is not added in MeshPacketSerializer

[beegee-tokyo]

Category

Other

Hardware

Other

Firmware Version

2.4.0.46d7b82

Description

The sensor data from the RAK12039 are not created in the JSON serializer for MQTT output.
Two changes are required:
(1) Change in telemetry.pb.h (it says it is automatically generated, but I don't know how and where)
Change uint32_t values to uint16_t values in the meshtastic_AirQualityMetric

/* Air quality metrics */
typedef struct _meshtastic_AirQualityMetrics {
    /* Concentration Units Standard PM1.0 */
    uint16_t pm10_standard;
    /* Concentration Units Standard PM2.5 */
    uint16_t pm25_standard;
    /* Concentration Units Standard PM10.0 */
    uint16_t pm100_standard;
    /* Concentration Units Environmental PM1.0 */
    uint16_t pm10_environmental;
    /* Concentration Units Environmental PM2.5 */
    uint16_t pm25_environmental;
    /* Concentration Units Environmental PM10.0 */
    uint16_t pm100_environmental;
    /* 0.3um Particle Count */
    uint16_t particles_03um;
    /* 0.5um Particle Count */
    uint16_t particles_05um;
    /* 1.0um Particle Count */
    uint16_t particles_10um;
    /* 2.5um Particle Count */
    uint16_t particles_25um;
    /* 5.0um Particle Count */
    uint16_t particles_50um;
    /* 10.0um Particle Count */
    uint16_t particles_100um;
} meshtastic_AirQualityMetrics;

(2) Change in MeshPacketSerializer.cpp
Add air quality metrics to the serializer

                } else if (decoded->which_variant == meshtastic_Telemetry_air_quality_metrics_tag) {
                    msgPayload["pm10"] = new JSONValue(decoded->variant.air_quality_metrics.pm10_standard);
                    msgPayload["pm25"] = new JSONValue(decoded->variant.air_quality_metrics.pm25_standard);
                    msgPayload["pm100"] = new JSONValue(decoded->variant.air_quality_metrics.pm100_standard);
                    msgPayload["pm10_e"] = new JSONValue(decoded->variant.air_quality_metrics.pm10_environmental);
                    msgPayload["pm25_e"] = new JSONValue(decoded->variant.air_quality_metrics.pm25_environmental);
                    msgPayload["pm100_e"] = new JSONValue(decoded->variant.air_quality_metrics.pm100_environmental);

Result of change: Meshtastic Device

Created with RAKwireless Meshtastic devices:

• WisMesh Hub (coming soon)
• WisMesh Pocket + RAK1906
• WisBlock based indoor air quality device (RAK19001 + RAK4631 + RAK1901 + RAK1903 + RAK12039)
• WisBlock base MQTT gateway (RAK19007 + RAK11200 + RAk13300)
• NodeRED parser and forwarder to InfluxDB and Grafana visualization

Relevant log output

No response