TipiWatchDogService.py 文件源码

def __init__(self):
        self.__RESET = 26

        GPIO.setmode(GPIO.BCM)
        GPIO.setwarnings(False)

        GPIO.setup(self.__RESET, GPIO.IN, pull_up_down=GPIO.PUD_UP)
        # Do not proceed unless the reset signal has turned off
        # attempt to prevent restart storm in systemd

        print "waiting for reset to complete."
        while GPIO.input(self.__RESET) != 1:
            time.sleep(0.100)
            pass

        GPIO.add_event_detect(
            self.__RESET,
            GPIO.FALLING,
            callback=onReset,
            bouncetime=100)
        print "GPIO initialized."