from machine import Pin, Timer
import time

led = Pin(19, Pin.OUT)
led_blink = Pin(22, Pin.OUT)
btm = Pin(12, Pin.IN, Pin.PULL_UP)

anterior = 0
cont = 0

timer = Timer(0)
aguarda = False

def debounce(d):
    global aguarda
    aguarda = False

def funcao(pin):
    global aguarda
    if btm.value()==0 and aguarda == False:
        aguarda = True
        timer.init(mode=Timer.ONE_SHOT, period=100, callback=debounce)
        global cont
        cont += 1
    while btm.value()==0:
        led.on()
    led.off()

btm.irq(trigger=Pin.IRQ_RISING, handler=funcao)

while True:
    if cont != anterior:
        anterior = cont
        print(cont)