RIOT DEBOUNCE

debounce.c

#include <stdio.h>
#include "xtimer.h"
#include "timex.h"
#include "periph/gpio.h"

#define MY_LED_1 GPIO_PIN(PORT_C,8)

/* set interval to 1 second */
#define INTERVAL (1U * US_PER_SEC)

xtimer_ticks32_t debounce_timer;  // <-------------------------

void btn_handler(void *arg)
{
	(void)arg;
	if ((xtimer_now().ticks32 - debounce_timer.ticks32) > 100000){ // <-----
		gpio_toggle(MY_LED_1);
		debounce_timer = xtimer_now(); // <--------------------
	}

}

int main(void)
{
	debounce_timer = xtimer_now(); // <--------------------
	gpio_init(MY_LED_1,GPIO_OUT);


	gpio_init_int(GPIO_PIN(PORT_A, 0), GPIO_IN, GPIO_FALLING,
btn_handler, NULL);

    while(1) {
    }

    return 0;
}