touch.py 文件源码

def __init__(self, index, gpio_pin):
        self.pressed = False
        self._on_press_handler = None
        self._on_release_handler = None
        self._gpio_pin = gpio_pin
        self._index = index
        GPIO.setup(self._gpio_pin, GPIO.IN, pull_up_down=GPIO.PUD_UP)
        GPIO.add_event_detect(self._gpio_pin, GPIO.BOTH, bouncetime=1, callback=self._handle_button)