gpio_watchdog.py 文件源码

def __initGPIOs(self):
        #setup GPIO using Board numbering (pins, not GPIOs)
        GPIO.setwarnings(False)
        GPIO.cleanup()
        GPIO.setmode(GPIO.BOARD)

        #setup defined pins and event_detectors or outputs and initial states (initial is always 0, low)
        for pin in pins_in_use:
            if pins_in_use[pin][0] == GPIO.IN:
                if pin == 5:
                    GPIO.setup(pin, pins_in_use[pin][0], pull_up_down=GPIO.PUD_UP)
                else:
                    GPIO.setup(pin, pins_in_use[pin][0])
                GPIO.add_event_detect(pin, pins_in_use[pin][1], callback=self.shoutItOut, bouncetime=100)
                self.gpio_states.update({pin: 1})
            elif pins_in_use[pin][0] == GPIO.OUT:
                GPIO.setup(pin, pins_in_use[pin][0], initial=0)