twr_sgp30.h

#ifndef _TWR_SGP30_H
#define _TWR_SGP30_H
 
#include <twr_i2c.h>
#include <twr_scheduler.h>
 
 
 
typedef enum
{
    TWR_SGP30_EVENT_ERROR = 0,
 
    TWR_SGP30_EVENT_UPDATE = 1
 
} twr_sgp30_event_t;
 
 
typedef struct twr_sgp30_t twr_sgp30_t;
 
 
typedef enum
{
    TWR_SGP30_STATE_ERROR = -1,
    TWR_SGP30_STATE_INITIALIZE = 0,
    TWR_SGP30_STATE_GET_FEATURE_SET = 1,
    TWR_SGP30_STATE_READ_FEATURE_SET = 2,
    TWR_SGP30_STATE_INIT_AIR_QUALITY = 3,
    TWR_SGP30_STATE_SET_HUMIDITY = 4,
    TWR_SGP30_STATE_MEASURE_AIR_QUALITY = 5,
    TWR_SGP30_STATE_READ_AIR_QUALITY = 6
 
} twr_sgp30_state_t;
 
struct twr_sgp30_t
{
    twr_i2c_channel_t _i2c_channel;
    uint8_t _i2c_address;
    twr_scheduler_task_id_t _task_id_interval;
    twr_scheduler_task_id_t _task_id_measure;
    void (*_event_handler)(twr_sgp30_t *, twr_sgp30_event_t, void *);
    void *_event_param;
    twr_tick_t _update_interval;
    twr_sgp30_state_t _state;
    twr_tick_t _tick_ready;
    twr_tick_t _tick_last_measurement;
    bool _hit_error;
    bool _measurement_valid;
    uint16_t _co2eq;
    uint16_t _tvoc;
    uint16_t _ah_scaled;
};
 
 
 
void twr_sgp30_init(twr_sgp30_t *self, twr_i2c_channel_t i2c_channel, uint8_t i2c_address);
 
 
void twr_sgp30_deinit(twr_sgp30_t *self);
 
 
void twr_sgp30_set_event_handler(twr_sgp30_t *self, void (*event_handler)(twr_sgp30_t *, twr_sgp30_event_t, void *), void *event_param);
 
 
void twr_sgp30_set_update_interval(twr_sgp30_t *self, twr_tick_t interval);
 
 
bool twr_sgp30_measure(twr_sgp30_t *self);
 
 
bool twr_sgp30_get_co2eq_ppm(twr_sgp30_t *self, uint16_t *ppm);
 
 
bool twr_sgp30_get_tvoc_ppb(twr_sgp30_t *self, uint16_t *ppb);
 
 
float twr_sgp30_set_compensation(twr_sgp30_t *self, float *t_celsius, float *rh_percentage);
 
 
#endif // _TWR_SGP30_H