嵌入式开发中常用的数据结构和算法程序，和平台无关，可移植性好-Embedded development of data structures and algorithms commonly used procedures, and platform-independent and portable

STM32标准外设库之前的版本也称固件函数库或简称固件库，是一个固件函数包，它由程序、数据结构和宏组成，包括了微控制器所有外设的性能特征。该函数库还包括每一个外设的驱动描述和应用实例，为开发者访问底层硬件提供了一个中间API。-STM32 standard peripheral library before version, also known as firmware library, or simply firmware library is a firmware function pack

iic驱动的代码，包括IIc总线驱动，IIc核心，IIc设备驱动，还有部分驱动的算法实现及其数据结构，包含了pcf8574,pcf8575,pcf8591,tps95010等芯片的代码。-iic driver code, including the bus driver IIc, IIc core, IIc device drivers, there are some driven algorithms and data structures, including the pcf8574, pc