09_ne555.py 文件源码

def setup():
    GPIO.setmode(GPIO.BCM)       # Numbers GPIOs by physical location
    GPIO.setup(SigPin, GPIO.IN, pull_up_down=GPIO.PUD_UP)    # Set Pin's mode is input, and pull up to high level(3.3V)
    GPIO.add_event_detect(SigPin, GPIO.RISING, callback=count) # wait for rasing