controller_rpi.py 文件源码

def prepare_irq_pin(self, pin_id): 
        pin = self.prepare_pin(pin_id, GPIO.IN) 
        if pin:       
            pin.set_handler_for_irq_on_rising_edge = \
                lambda handler: GPIO.add_event_detect(pin.pin_id,
                                                      GPIO.RISING,
                                                      callback = handler)  
            pin.detach_irq = lambda : GPIO.remove_event_detect(pin.pin_id) 
            return pin