iiC总线由NXP（原PHILIPS）公司设计，多用于主控制器和从器件间的主从通信，在小数据量场合使用，传输距离短，任意时刻只能有一个主机等特性。此代码为基于单片机的程序。(The IIC bus is designed by NXP (formerly PHILIPS) and is mainly used for master-slave communication between the master controller and slave devices. It is used in