clang some more, add a humidity object

Adafruit_BME280.cpp

@@ -545,6 +545,15 @@ Adafruit_Sensor *Adafruit_BME280::getPressureSensor(void) {
   return pressure_sensor;
 }
 
+/*!
+    @brief  Gets an Adafruit Unified Sensor object for the humidity sensor
+   component
+    @return Adafruit_Sensor pointer to humidity sensor
+ */
+Adafruit_Sensor *Adafruit_BME280::getHumiditySensor(void) {
+  return humidity_sensor;
+}
+
 /**************************************************************************/
 /*!
     @brief  Gets the sensor_t data for the BME280's temperature sensor
@@ -624,3 +633,43 @@ bool Adafruit_BME280_Pressure::getEvent(sensors_event_t *event) {
   event->pressure = _theBME280->readPressure() / 100; // convert Pa to hPa
   return true;
 }
+
+/**************************************************************************/
+/*!
+    @brief  Gets the sensor_t data for the BME280's humidity sensor
+*/
+/**************************************************************************/
+void Adafruit_BME280_Humidity::getSensor(sensor_t *sensor) {
+  /* Clear the sensor_t object */
+  memset(sensor, 0, sizeof(sensor_t));
+
+  /* Insert the sensor name in the fixed length char array */
+  strncpy(sensor->name, "BME280", sizeof(sensor->name) - 1);
+  sensor->name[sizeof(sensor->name) - 1] = 0;
+  sensor->version = 1;
+  sensor->sensor_id = _sensorID;
+  sensor->type = SENSOR_TYPE_RELATIVE_HUMIDITY;
+  sensor->min_delay = 0;
+  sensor->min_value = 0;
+  sensor->max_value = 100; /* 0 - 100 %  */
+  sensor->resolution = 3;  /* 3% accuracy */
+}
+
+/**************************************************************************/
+/*!
+    @brief  Gets the humidity as a standard sensor event
+    @param  event Sensor event object that will be populated
+    @returns True
+*/
+/**************************************************************************/
+bool Adafruit_BME280_Humidity::getEvent(sensors_event_t *event) {
+  /* Clear the event */
+  memset(event, 0, sizeof(sensors_event_t));
+
+  event->version = sizeof(sensors_event_t);
+  event->sensor_id = _sensorID;
+  event->type = SENSOR_TYPE_RELATIVE_HUMIDITY;
+  event->timestamp = millis();
+  event->relative_humidity = _theBME280->readHumidity();
+  return true;
+}

Adafruit_BME280.h

@@ -135,6 +135,20 @@ private:
   Adafruit_BME280 *_theBME280 = NULL;
 };
 
+/** Adafruit Unified Sensor interface for humidity component of BME280 */
+class Adafruit_BME280_Humidity : public Adafruit_Sensor {
+public:
+  /** @brief Create an Adafruit_Sensor compatible object for the humidity sensor
+      @param parent A pointer to the BME280 class */
+  Adafruit_BME280_Humidity(Adafruit_BME280 *parent) { _theBME280 = parent; }
+  bool getEvent(sensors_event_t *);
+  void getSensor(sensor_t *);
+
+private:
+  int _sensorID = 0;
+  Adafruit_BME280 *_theBME280 = NULL;
+};
+
 /**************************************************************************/
 /*!
     @brief  Class that stores state and functions for interacting with BME280 IC
@@ -222,6 +236,7 @@ public:
 
   Adafruit_Sensor *getTemperatureSensor(void);
   Adafruit_Sensor *getPressureSensor(void);
+  Adafruit_Sensor *getHumiditySensor(void);
 
 protected:
   TwoWire *_wire; //!< pointer to a TwoWire object
@@ -229,6 +244,7 @@ protected:
 
   Adafruit_BME280_Temp *temp_sensor = NULL;
   Adafruit_BME280_Pressure *pressure_sensor = NULL;
+  Adafruit_BME280_Humidity *humidity_sensor = NULL;
 
   void readCoefficients(void);
   bool isReadingCalibration(void);