from machine import Pin
import time

led=Pin(4,Pin.OUT)

btn1=Pin(14,Pin.IN,Pin.PULL_DOWN) #pulsante PULL-DOWN
btn2=Pin(27,Pin.IN, Pin.PULL_UP) #pulsante PULL-UP

led.off()

blinking= False

def blinkingOn(bt1):
    global blinking
    blinking = True

def blinkingOff(bt2):
    global blinking
    blinking = False
    led.off()

btn1.irq(handler=blinkingOn, trigger=Pin.IRQ_RISING)
btn2.irq(handler=blinkingOff, trigger=Pin.IRQ_FALLING)

while True:
    while blinking:
        led.value(not led.value())
        time.sleep(1)