gpio.py 文件源码

def __init__(self, pin):
        GPIO.setup(pin, GPIO.IN, pull_up_down=GPIO.PUD_UP)
        GPIO.add_event_detect(pin, GPIO.BOTH, callback=self._gpio_event)
        self._pin = pin
        self._pressed = False
        self._was_pressed = False
        self._was_released = False