RPi.GPIO 流水灯

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import RPi.GPIO as GPIO
import time
# BCM GPIO编号
pins = [17,18,27,22,23,24,25,4]
def setup():
# 采用BCM编号
GPIO.setmode(GPIO.BCM)
# 设置所有GPIO为输出状态，且输出低电平
for pin in pins:
GPIO.setup(pin, GPIO.OUT)
GPIO.output(pin, GPIO.LOW)
def loop():
while True:
# 循环点亮
for pin in pins:
GPIO.output(pin, GPIO.HIGH)
time.sleep(0.5)
GPIO.output(pin, GPIO.LOW)
time.sleep(0.5)
def destroy():
for pin in pins:
GPIO.output(pin, GPIO.LOW)
GPIO.setup(pin, GPIO.IN)
if __name__ == ‘__main__':
# 初始化GPIO
setup()
try:
loop()
except KeyboardInterrupt:
# 恢复GPIO口状态
destroy()

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