twr_button.h

#ifndef _TWR_BUTTON_H
#define _TWR_BUTTON_H
 
#include <twr_gpio.h>
#include <twr_tick.h>
#include <twr_scheduler.h>
 
 
 
typedef enum
{
    TWR_BUTTON_EVENT_PRESS = 0,
 
    TWR_BUTTON_EVENT_RELEASE = 1,
 
    TWR_BUTTON_EVENT_CLICK = 2,
 
    TWR_BUTTON_EVENT_HOLD = 3
 
} twr_button_event_t;
 
 
typedef struct twr_button_t twr_button_t;
 
 
typedef struct
{
    void (*init)(twr_button_t *self);
 
    int (*get_input)(twr_button_t *self);
 
} twr_button_driver_t;
 
 
typedef union
{
    twr_gpio_channel_t gpio;
    int virtual;
 
} twr_button_channel_t;
 
struct twr_button_t
{
    twr_button_channel_t _channel;
    const twr_button_driver_t *_driver;
    twr_gpio_pull_t _gpio_pull;
    int _idle_state;
    void (*_event_handler)(twr_button_t *, twr_button_event_t, void *);
    void *_event_param;
    twr_tick_t _scan_interval;
    twr_tick_t _debounce_time;
    twr_tick_t _click_timeout;
    twr_tick_t _hold_time;
    twr_tick_t _tick_debounce;
    twr_tick_t _tick_click_timeout;
    twr_tick_t _tick_hold_threshold;
    int _state;
    bool _hold_signalized;
    twr_scheduler_task_id_t _task_id;
};
 
 
 
void twr_button_init(twr_button_t *self, twr_gpio_channel_t gpio_channel, twr_gpio_pull_t gpio_pull, int idle_state);
 
 
void twr_button_init_virtual(twr_button_t *self, int channel, const twr_button_driver_t *driver, int idle_state);
 
 
void twr_button_set_event_handler(twr_button_t *self, void (*event_handler)(twr_button_t *, twr_button_event_t, void *), void *event_param);
 
 
void twr_button_set_scan_interval(twr_button_t *self, twr_tick_t scan_interval);
 
 
void twr_button_set_debounce_time(twr_button_t *self, twr_tick_t debounce_time);
 
 
void twr_button_set_click_timeout(twr_button_t *self, twr_tick_t click_timeout);
 
 
void twr_button_set_hold_time(twr_button_t *self, twr_tick_t hold_time);
 
 
#endif // _TWR_BUTTON_H