import machine
def print_wakeup_reason():
    id = machine.wake_reason()
    print(id)
    if id == machine.EXT0_WAKE:
        print("EXT0_WAKE")
    elif id == machine.EXT1_WAKE:
        print("EXT1_WAKE")
    elif id == machine.PIN_WAKE:
        print("PIN_WAKE")
    elif id == machine.TOUCHPAD_WAKE:
        print("TOUCHPAD_WAKE")
    elif id == machine.TIMER_WAKE:
        print("TIMER_WAKE")
    else:
        print("unknown")
