树莓派是如何去实现按钮关机等多功能的

准备按钮面包板杜邦线接线代码（python3）# -*- coding: utf-8 -*-import time,osimport RPi.GPIO as GPIO# 树莓派 关机/重启按钮（单击篇）BUTTON=18GPIO.setmode(GPIO.BCM)GPIO.setup(BUTTON,GPIO.IN,pull_up_down=GPIO.PUD_DOWN...