multi_button.py 文件源码

def button_press_switch(channel):
    global button_status
    GPIO.remove_event_detect(channel)
    logging.info('Button pressed')
    pressed_time = datetime.datetime.now()
    while not GPIO.input(channel):
        time.sleep(.5)
    dif = datetime.datetime.now() - pressed_time
    pressed_time = dif.seconds
    if pressed_time > 6:
        shutdown()
        button_status = BUTTON_SHUTDOWN
    elif pressed_time > 2:
        button_status = BUTTON_MONITOR_SWITCH
    else:
        button_status = BUTTON_SENSOR_SWITCH
    logging.info("Button status = %s", button_status)
    GPIO.add_event_detect(channel, GPIO.FALLING, callback=button_press_switch, bouncetime=200)


# Run cleanup routines