from machine import Pin
from time import sleep

led = Pin (27, Pin.OUT)
bot = Pin (28, Pin.IN, Pin.PULL_UP)

ev = False
i = 0

def detecta(p):
    global led, ev

    led (not led())
    ev = True

bot.irq (trigger=Pin.IRQ_FALLING,
        handler=detecta)

while True:
    if ev:
        print ("Botão pressionado")
        ev = False

    print (f"Momento: {i}")
    sleep (1)
    i += 1