gpio_watchdog.py 文件源码

def __init__(self,pinA,pinB,button,callback, parent):
        self.pinA = pinA
        self.pinB = pinB
        self.button = button
        self.callback = callback
        self.parent = parent
        if self.pinA is not None and self.pinB is not None:
            GPIO.setmode(GPIO.BOARD)

            GPIO.setwarnings(False)
            GPIO.setup(self.pinA, GPIO.IN)
            GPIO.setup(self.pinB, GPIO.IN)
            GPIO.add_event_detect(self.pinA, GPIO.FALLING,
            callback=self.switch_event)
            GPIO.add_event_detect(self.pinB, GPIO.FALLING,
            callback=self.switch_event)

        if self.button is not None:
            GPIO.setup(self.button, GPIO.IN)
            GPIO.add_event_detect(self.button, GPIO.BOTH,
            callback=self.button_event, bouncetime=200)

        return
        # Call back routine called by switch events