fix detection of lark weather station and add rain sensor (#5874)

* fix detection of lark weather station
* fix unit tests and add support for Dfrobot rain gauge
* fix name display on bootup
* fix gauge init logic
* trunk fmt

src/modules/Telemetry/Sensor/DFRobotGravitySensor.cpp

@@ -0,0 +1,44 @@
+#include "configuration.h"
+
+#if !MESHTASTIC_EXCLUDE_ENVIRONMENTAL_SENSOR
+
+#include "../mesh/generated/meshtastic/telemetry.pb.h"
+#include "DFRobotGravitySensor.h"
+#include "TelemetrySensor.h"
+#include <DFRobot_RainfallSensor.h>
+#include <string>
+
+DFRobotGravitySensor::DFRobotGravitySensor() : TelemetrySensor(meshtastic_TelemetrySensorType_DFROBOT_RAIN, "DFROBOT_RAIN") {}
+
+int32_t DFRobotGravitySensor::runOnce()
+{
+    LOG_INFO("Init sensor: %s", sensorName);
+    if (!hasSensor()) {
+        return DEFAULT_SENSOR_MINIMUM_WAIT_TIME_BETWEEN_READS;
+    }
+
+    gravity = DFRobot_RainfallSensor_I2C(nodeTelemetrySensorsMap[sensorType].second);
+    status = gravity.begin();
+
+    return initI2CSensor();
+}
+
+void DFRobotGravitySensor::setup()
+{
+    LOG_DEBUG("%s VID: %x, PID: %x, Version: %s", sensorName, gravity.vid, gravity.pid, gravity.getFirmwareVersion().c_str());
+}
+
+bool DFRobotGravitySensor::getMetrics(meshtastic_Telemetry *measurement)
+{
+    measurement->variant.environment_metrics.has_rainfall_1h = true;
+    measurement->variant.environment_metrics.has_rainfall_24h = true;
+
+    measurement->variant.environment_metrics.rainfall_1h = gravity.getRainfall(1);
+    measurement->variant.environment_metrics.rainfall_24h = gravity.getRainfall(24);
+
+    LOG_INFO("Rain 1h: %f mm", measurement->variant.environment_metrics.rainfall_1h);
+    LOG_INFO("Rain 24h: %f mm", measurement->variant.environment_metrics.rainfall_24h);
+    return true;
+}
+
+#endif

src/modules/Telemetry/Sensor/DFRobotGravitySensor.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#ifndef _MT_DFROBOTGRAVITYSENSOR_H
+#define _MT_DFROBOTGRAVITYSENSOR_H
+#include "configuration.h"
+
+#if !MESHTASTIC_EXCLUDE_ENVIRONMENTAL_SENSOR
+
+#include "../mesh/generated/meshtastic/telemetry.pb.h"
+#include "TelemetrySensor.h"
+#include <DFRobot_RainfallSensor.h>
+#include <string>
+
+class DFRobotGravitySensor : public TelemetrySensor
+{
+  private:
+    DFRobot_RainfallSensor_I2C gravity = DFRobot_RainfallSensor_I2C(nodeTelemetrySensorsMap[sensorType].second);
+
+  protected:
+    virtual void setup() override;
+
+  public:
+    DFRobotGravitySensor();
+    virtual int32_t runOnce() override;
+    virtual bool getMetrics(meshtastic_Telemetry *measurement) override;
+};
+
+#endif
+#endif