/*
 * btn.h
 */

#ifndef USER_PERIPH_BTN_H_
#define USER_PERIPH_BTN_H_



#include <ch32v20x.h>



#define BTN_COUNT       5
#define BTN_DEBOUNCE    (24 / 4)   // debounce time in ~4ms increments

#define BTN_PORT        GPIOB

#define BTN1            0
#define BTN1_PIN        10
#define BTN2            1
#define BTN2_PIN        11

#define DIP1            2
#define DIP1_PIN        12
#define DIP2            3
#define DIP2_PIN        13
#define DIP3            4
#define DIP3_PIN        14

#define BTN_PIN_MASK    0xf


#define BTN_PUSH        (1 << 0)
#define BTN_HOLD        (1 << 1)
#define BTN_RELEASE     (1 << 2)
#define BTN_IGNORE      (1 << 3)



typedef struct Btn {
    uint8_t _pintype;
    uint8_t _mask;
    uint16_t _count;            // held counts
    uint16_t hold;              // initial hold
    uint16_t repeat;            // repeated hold
    void (*cb_push)(uint8_t);
    void (*cb_hold)(uint8_t);
    void (*cb_release)(uint8_t);
} Btn;



extern struct Btn btn[BTN_COUNT];



void btn_init();
void btn_poll();



#endif /* USER_PERIPH_BTN_H_ */