from machine import Pin
from time import sleep

led = Pin(4, Pin.OUT)

flag = False

btnON = Pin(14, Pin.IN, Pin.PULL_DOWN)
btnOFF = Pin(27, Pin.IN, Pin.PULL_UP)

led.off()

def switchON(bt1):
    global flag
    flag = True
    print("acceso")

def switchOFF(bt2):
    global flag
    flag = False
    print("spento")
    led.off()

btnON.irq(trigger=Pin.IRQ_RISING, handler=switchON)
btnOFF.irq(trigger=Pin.IRQ_FALLING, handler=switchOFF)

while True:
    if flag:
        led.value(not led.value())
        sleep(0.5)