multi_monitor.py 文件源码

def button_press_switch(channel):
    GPIO. remove_event_detect(channel)
    print('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 < 2:
        button_status = 1
    elif pressed_time < 6:
        button_status = 2
    else:
        button_status = 4
    print(button_status)
    GPIO.add_event_detect(channel, GPIO.FALLING, callback=button_press_switch,  bouncetime=200)
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