由于一些基本的单片机没有I2C口通信，为了和其他的拥有I2C口的芯片通信，需要模拟I2C口。本源代码是基于单片机的I2C口的模拟程序。-Because some of the basic single-chip I2C I no communications, and other in order to have the chip I2C communication port, I need to simulate I2C. Source code is based on single-chip I2C port simulation program.