#pragma once
#ifndef _BUTTONS_H_
#define _BUTTONS_H_

/* Events */
#define EVT_BTN1_PRS EVENT_MASK(0)
#define EVT_BTN2_PRS EVENT_MASK(1)
#define EVT_BTN3_PRS EVENT_MASK(2)
#define EVT_BTN4_PRS EVENT_MASK(3)

/* time constant in ms */
#define BTN_SCAN_PERIOD     10
#define BTN_SCAN_PAUSE      200
#define BTN_TIME_PRESSED    30
#define BTN_TIME_HOLDED     500
#define BTN_TIME_REPEATED   50
#define BUTTON_NUMS         4

/* type defs */
typedef enum btn_num {
  Button1 = 0,
  Button2 = 1,
  Button3 = 2,
  Button4 = 3
} button_num_t;

typedef enum btn_state {
  BTN_st_Clear = 0,
  BTN_st_Pressed,
  BTN_st_Holded,
  BTN_st_Released
} button_state_t;

/* function prototypes */
#ifdef __cplusplus
extern "C" {
#endif
  void buttons_Init(thread_t * thread);
  button_state_t buttons_GetState(const button_num_t btn);
#ifdef __cplusplus
}
#endif

#endif /* _BUTTONS_H_ */