firmware/src/modules/Telemetry/AirQualityTelemetry.h

#include "configuration.h"

#if !MESHTASTIC_EXCLUDE_ENVIRONMENTAL_SENSOR

#pragma once
#include "../mesh/generated/meshtastic/telemetry.pb.h"
#include "Adafruit_PM25AQI.h"
#include "NodeDB.h"
#include "ProtobufModule.h"

class AirQualityTelemetryModule : private concurrency::OSThread, public ProtobufModule<meshtastic_Telemetry>
{
    CallbackObserver<AirQualityTelemetryModule, const meshtastic::Status *> nodeStatusObserver =
        CallbackObserver<AirQualityTelemetryModule, const meshtastic::Status *>(this,
                                                                                &AirQualityTelemetryModule::handleStatusUpdate);

  public:
    AirQualityTelemetryModule()
        : concurrency::OSThread("AirQualityTelemetry"),
          ProtobufModule("AirQualityTelemetry", meshtastic_PortNum_TELEMETRY_APP, &meshtastic_Telemetry_msg)
    {
        lastMeasurementPacket = nullptr;
        setIntervalFromNow(10 * 1000);
        aqi = Adafruit_PM25AQI();
        nodeStatusObserver.observe(&nodeStatus->onNewStatus);
    }

  protected:
    /** Called to handle a particular incoming message
    @return true if you've guaranteed you've handled this message and no other handlers should be considered for it
    */
    virtual bool handleReceivedProtobuf(const meshtastic_MeshPacket &mp, meshtastic_Telemetry *p) override;
    virtual int32_t runOnce() override;
    /** Called to get current Air Quality data
    @return true if it contains valid data
    */
    bool getAirQualityTelemetry(meshtastic_Telemetry *m);
    virtual meshtastic_MeshPacket *allocReply() override;
    /**
     * Send our Telemetry into the mesh
     */
    bool sendTelemetry(NodeNum dest = NODENUM_BROADCAST, bool wantReplies = false);

  private:
    Adafruit_PM25AQI aqi;
    PM25_AQI_Data data = {0};
    bool firstTime = true;
    meshtastic_MeshPacket *lastMeasurementPacket;
    uint32_t sendToPhoneIntervalMs = SECONDS_IN_MINUTE * 1000; // Send to phone every minute
    uint32_t lastSentToMesh = 0;
};

#endif