twr_hts221.h

#ifndef _TWR_HTS221_H
#define _TWR_HTS221_H
 
#include <twr_i2c.h>
#include <twr_scheduler.h>
 
 
 
typedef enum
{
    TWR_HTS221_EVENT_ERROR = 0,
 
    TWR_HTS221_EVENT_UPDATE = 1
 
} twr_hts221_event_t;
 
 
typedef struct twr_hts221_t twr_hts221_t;
 
 
typedef enum
{
    TWR_HTS221_STATE_ERROR = -1,
    TWR_HTS221_STATE_INITIALIZE = 0,
    TWR_HTS221_STATE_MEASURE = 1,
    TWR_HTS221_STATE_READ = 2,
    TWR_HTS221_STATE_UPDATE = 3
 
} twr_hts221_state_t;
 
struct twr_hts221_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_hts221_t *, twr_hts221_event_t, void *);
    void *_event_param;
    bool _measurement_active;
    twr_tick_t _update_interval;
    twr_hts221_state_t _state;
    twr_tick_t _tick_ready;
    bool _humidity_valid;
    int16_t _reg_humidity;
    int16_t _h0_rh;
    int16_t _h0_t0_out;
    float _h_grad;
};
 
 
 
void twr_hts221_init(twr_hts221_t *self, twr_i2c_channel_t i2c_channel, uint8_t i2c_address);
 
 
void twr_hts221_deinit(twr_hts221_t *self);
 
 
void twr_hts221_set_event_handler(twr_hts221_t *self, void (*event_handler)(twr_hts221_t *, twr_hts221_event_t, void *), void *event_param);
 
 
void twr_hts221_set_update_interval(twr_hts221_t *self, twr_tick_t interval);
 
 
bool twr_hts221_measure(twr_hts221_t *self);
 
 
bool twr_hts221_get_humidity_percentage(twr_hts221_t *self, float *percentage);
 
 
#endif // _TWR_HTS221_H