0.前言

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import RPi.GPIO as GPIO
import time
# BCM GPIO編號
pins = [17,18,27,22,23,24,25,4]
def setup():
    # 採用BCM編號
    GPIO.setmode(GPIO.BCM)
    # 設定所有GPIO為輸出狀態，且輸出低電平
    for pin in pins:
        GPIO.setup(pin, GPIO.OUT)
        GPIO.output(pin, GPIO.LOW)
def loop():
    while True:
        # 迴圈點亮
        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:
        # 恢復GPIO口狀態
        destroy()