ringer.py 文件源码

def checkbutton(self):
        """
        debounced button
        :return:
        """
        ret = 0
        ts = time.time()

        if ts - self._last_check <= 0.05:
            ret = 0
        else:
            state = GPIO.input(self._button)  # Read button state
            if (not self._last_state) and state:
                print("got it")
                ret = 1

            self._last_state = state
            self._last_check = time.time()
        return ret