基于STM32的标准软件模拟I2C接口程序，只要修改引脚定义及延时接口程序即可使用，改程序已在工业产品上大量应用，十分的稳定可靠并且代码编写规范。(The standard software based on STM32 simulates the I2C interface program. It can be used only by modifying the pin definition and delay interface program. The modified program has been widely used in industrial products. It is very stable and reliable and the code is written in a standard way.)