Adafruit_HTU31D.h

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#ifndef _ADAFRUIT_HTU31D_H
#define _ADAFRUIT_HTU31D_H

#include <Adafruit_BusIO_Register.h>
#include <Adafruit_I2CDevice.h>
#include <Adafruit_Sensor.h>

#define HTU31D_DEFAULT_I2CADDR (0x40)

#define HTU31D_READTEMPHUM (0x00)

#define HTU31D_CONVERSION (0x40)

#define HTU31D_READSERIAL (0x0A)

#define HTU31D_HEATERON (0x04)

#define HTU31D_HEATEROFF (0x02)

#define HTU31D_RESET (0x1E)

class Adafruit_HTU31D;

class Adafruit_HTU31D_Humidity : public Adafruit_Sensor {
public:
  Adafruit_HTU31D_Humidity(Adafruit_HTU31D *parent) { _theHTU31D = parent; }
  bool getEvent(sensors_event_t *);
  void getSensor(sensor_t *);

private:
  int _sensorID = 0x31D1;
  Adafruit_HTU31D *_theHTU31D = NULL;
};

class Adafruit_HTU31D_Temp : public Adafruit_Sensor {
public:
  Adafruit_HTU31D_Temp(Adafruit_HTU31D *parent) { _theHTU31D = parent; }

  bool getEvent(sensors_event_t *);
  void getSensor(sensor_t *);

private:
  int _sensorID = 0x31D0;
  Adafruit_HTU31D *_theHTU31D = NULL;
};

class Adafruit_HTU31D {
public:
  Adafruit_HTU31D();
  ~Adafruit_HTU31D(void);

  bool begin(uint8_t i2c_addr = HTU31D_DEFAULT_I2CADDR,
             TwoWire *theWire = &Wire);
  bool reset(void);
  uint32_t readSerial(void);

  bool enableHeater(bool en);

  bool getEvent(sensors_event_t *humidity, sensors_event_t *temp);
  Adafruit_Sensor *getTemperatureSensor(void);
  Adafruit_Sensor *getHumiditySensor(void);

protected:
  float _temperature, 
      _humidity;      

  uint16_t _sensorid_humidity; 
  uint16_t _sensorid_temp;     

  Adafruit_I2CDevice *i2c_dev = NULL;       
  Adafruit_HTU31D_Temp *temp_sensor = NULL; 
  Adafruit_HTU31D_Humidity *humidity_sensor =
      NULL; 

private:
  friend class Adafruit_HTU31D_Temp;     
  friend class Adafruit_HTU31D_Humidity; 
  void fillTempEvent(sensors_event_t *temp, uint32_t timestamp);
  void fillHumidityEvent(sensors_event_t *humidity, uint32_t timestamp);
};

#endif /* _ADAFRUIT_HTU31D_H */