由PUDN上的一个C++的MD5算法修改为C语言，可以在stm32单片机上正确运行，耗时大概1.2ms，不依赖第三方库。-By the MD5 algorithm on a C++ PUDN modification of the C language, you can run correctly on stm32 SCM, consuming about 1.2ms, do not rely on third-party libraries.

几种Kalman滤波算法的c语言实现，可以用与stm32等微处理器的定位算法(Several Kalman filtering algorithm C language, you can use and STM32 and other microprocessor positioning algorithm)

simulink控制系统模拟,关于信号的采集(simulation of simulink's control)

CCS811驱动程序STM32一氧化碳气体COVOCs空气质量气体传感器模块(CCS811 STM32 COVOCs Drive)