/*!
 * @file Adafruit_HTU21DF.h
 */

#ifndef _ADAFRUIT_HTU21DF_H
#define _ADAFRUIT_HTU21DF_H

#if (ARDUINO >= 100)
#include "Arduino.h"
#else
#include "WProgram.h"
#endif
#include "Wire.h"

/** Default I2C address for the HTU21D. */
#define HTU21DF_I2CADDR (0x40)

/** Read temperature register. */
#define HTU21DF_READTEMP (0xE3)

/** Read humidity register. */
#define HTU21DF_READHUM (0xE5)

/** Write register command. */
#define HTU21DF_WRITEREG (0xE6)

/** Read register command. */
#define HTU21DF_READREG (0xE7)

/** Reset command. */
#define HTU21DF_RESET (0xFE)

/**
 * Driver for the Adafruit HTU21DF breakout board.
 */
class Adafruit_HTU21DF {
public:
  Adafruit_HTU21DF();

  boolean begin(void);
  float readTemperature(void);
  float readHumidity(void);
  void reset(void);

private:
  boolean readData(void);
  float _last_humidity, _last_temp;
};

#endif /* _ADAFRUIT_HTU21DF_H */