button.h

#pragma once

typedef enum {
    button_event_single_press,
    button_event_long_press,
} button_event_t;

typedef void (*button_callback_fn)(uint8_t gpio_num, button_event_t event);

/** 
    Starts monitoring the given GPIO pin for the pressed value. Events are recieved through the callback.

    @param gpio_num The GPIO pin that should be monitored
    @param pressed_value The expected value when the button is pressed. For buttons connected to ground this is 0/false, for other buttons this might be 1/true.
    @param long_press_time The duration that should be recognized as a long press, in miliseconds.
    @param callback The callback that is called when an "button" event occurs.
    @return A negative integer if this method fails.
*/
int button_create(uint8_t gpio_num, bool pressed_value, uint16_t long_press_time, button_callback_fn callback);

/** 
    Removes the given GPIO pin from monitoring.

    @param gpio_num The GPIO pin that should be removed from monitoring
*/
void button_destroy(uint8_t gpio_num);