Adafruit_SHT4x.h

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#ifndef ADAFRUIT_SHT4x_H
#define ADAFRUIT_SHT4x_H

#include "Arduino.h"
#include <Adafruit_I2CDevice.h>
#include <Adafruit_Sensor.h>

#define SHT4x_DEFAULT_ADDR 0x44 
#define SHT4x_NOHEAT_HIGHPRECISION                                             \
  0xFD 
#define SHT4x_NOHEAT_MEDPRECISION                                              \
  0xF6 
#define SHT4x_NOHEAT_LOWPRECISION                                              \
  0xE0 
#define SHT4x_HIGHHEAT_1S                                                      \
  0x39 
#define SHT4x_HIGHHEAT_100MS                                                   \
  0x32 
#define SHT4x_MEDHEAT_1S                                                       \
  0x2F 
#define SHT4x_MEDHEAT_100MS                                                    \
  0x24 
#define SHT4x_LOWHEAT_1S                                                       \
  0x1E 
#define SHT4x_LOWHEAT_100MS                                                    \
  0x15 
#define SHT4x_READSERIAL 0x89 
#define SHT4x_SOFTRESET 0x94  
typedef enum {
  SHT4X_HIGH_PRECISION,
  SHT4X_MED_PRECISION,
  SHT4X_LOW_PRECISION,
} sht4x_precision_t;

typedef enum {
  SHT4X_NO_HEATER,
  SHT4X_HIGH_HEATER_1S,
  SHT4X_HIGH_HEATER_100MS,
  SHT4X_MED_HEATER_1S,
  SHT4X_MED_HEATER_100MS,
  SHT4X_LOW_HEATER_1S,
  SHT4X_LOW_HEATER_100MS,
} sht4x_heater_t;

class Adafruit_SHT4x;

class Adafruit_SHT4x_Humidity : public Adafruit_Sensor {
public:
  Adafruit_SHT4x_Humidity(Adafruit_SHT4x *parent) { _theSHT4x = parent; }
  bool getEvent(sensors_event_t *);
  void getSensor(sensor_t *);

private:
  int _sensorID = 0x0401;
  Adafruit_SHT4x *_theSHT4x = NULL;
};

class Adafruit_SHT4x_Temp : public Adafruit_Sensor {
public:
  Adafruit_SHT4x_Temp(Adafruit_SHT4x *parent) { _theSHT4x = parent; }

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

private:
  int _sensorID = 0x0400;
  Adafruit_SHT4x *_theSHT4x = NULL;
};

class Adafruit_SHT4x {
public:
  Adafruit_SHT4x(void);
  ~Adafruit_SHT4x(void);

  bool begin(TwoWire *theWire = &Wire);
  uint32_t readSerial(void);
  bool reset(void);

  void setPrecision(sht4x_precision_t prec);
  sht4x_precision_t getPrecision(void);
  void setHeater(sht4x_heater_t heat);
  sht4x_heater_t getHeater(void);

  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_SHT4x_Temp *temp_sensor = NULL; 
  Adafruit_SHT4x_Humidity *humidity_sensor =
      NULL; 

private:
  sht4x_precision_t _precision = SHT4X_HIGH_PRECISION;
  sht4x_heater_t _heater = SHT4X_NO_HEATER;

  bool writeCommand(uint16_t cmd);
  bool readCommand(uint16_t command, uint8_t *buffer, uint8_t num_bytes);

  friend class Adafruit_SHT4x_Temp;     
  friend class Adafruit_SHT4x_Humidity; 

  void fillTempEvent(sensors_event_t *temp, uint32_t timestamp);
  void fillHumidityEvent(sensors_event_t *humidity, uint32_t timestamp);
};

#endif