Adafruit_VEML6075.h

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#include "Arduino.h"
#include <Adafruit_I2CDevice.h>
#include <Adafruit_I2CRegister.h>
#include <Wire.h>

#define VEML6075_ADDR (0x10)        
#define VEML6075_REG_CONF (0x00)    
#define VEML6075_REG_UVA (0x07)     
#define VEML6075_REG_DARK (0x08)    
#define VEML6075_REG_UVB (0x09)     
#define VEML6075_REG_UVCOMP1 (0x0A) 
#define VEML6075_REG_UVCOMP2 (0x0B) 
#define VEML6075_REG_ID (0x0C)      

#define VEML6075_DEFAULT_UVA_A_COEFF 2.22      
#define VEML6075_DEFAULT_UVA_B_COEFF 1.33      
#define VEML6075_DEFAULT_UVB_C_COEFF 2.95      
#define VEML6075_DEFAULT_UVB_D_COEFF 1.74      
#define VEML6075_DEFAULT_UVA_RESPONSE 0.001461 
#define VEML6075_DEFAULT_UVB_RESPONSE 0.002591 

/**************************************************************************/
/**************************************************************************/
typedef enum veml6075_integrationtime {
  VEML6075_50MS,
  VEML6075_100MS,
  VEML6075_200MS,
  VEML6075_400MS,
  VEML6075_800MS,
} veml6075_integrationtime_t;

/**************************************************************************/
/**************************************************************************/
typedef union {
  struct {
    uint8_t SD : 1;      
    uint8_t UV_AF : 1;   
    uint8_t UV_TRIG : 1; 
    uint8_t UV_HD : 1;   
    uint8_t UV_IT : 3;   
    uint8_t high_byte;   
  } bit;                 
  uint16_t reg;          
} veml6075_commandRegister;

/**************************************************************************/
/**************************************************************************/
class Adafruit_VEML6075 {
public:
  Adafruit_VEML6075();

  boolean begin(veml6075_integrationtime_t itime = VEML6075_100MS,
                bool highDynamic = false, bool forcedReads = false,
                TwoWire *theWire = &Wire);

  void shutdown(bool sd);

  void setIntegrationTime(veml6075_integrationtime_t itime);
  veml6075_integrationtime_t getIntegrationTime(void);
  void setHighDynamic(bool hd);
  bool getHighDynamic(void);
  void setForcedMode(bool flag);
  bool getForcedMode(void);

  void setCoefficients(float UVA_A, float UVA_B, float UVA_C, float UVA_D,
                       float UVA_response, float UVB_response);

  float readUVA(void);
  float readUVB(void);
  float readUVI(void);
  void readUVABI(float *a, float *b, float *i);

  Adafruit_I2CRegister *Config_Register; 

private:
  void takeReading(void);

  uint16_t _read_delay;

  // coefficients
  float _uva_a, _uva_b, _uvb_c, _uvb_d, _uva_resp, _uvb_resp;
  float _uva_calc, _uvb_calc;

  veml6075_commandRegister _commandRegister;

  Adafruit_I2CDevice *i2c_dev;
};