ucos-II在STM32上的移植源码，想学习嵌入式实时操作系统的可以看看,ucos-II in the transplant STM32 source, I would like to learn from real-time embedded operating system can look at

用TIM3定时器在PA6、PA7、PB0、PB1输出四种频率相同占空比分别是50 、37.5 、25 、12.5 的信号。 用TIM2的PWM_Input功能，从PA1口捕获PWM信号的频率及占空比，并用USART1输出测量信息。-At TIM3 timer with PA6, PA7, PB0, PB1 output frequency of the same four are 50 duty cycle, respectively, 37.5 , 25 , 12.5 of the

STM32的通用I/O介绍小程序，是STM32的入门学习程序。-STM32 Universal I/O introduced applet is STM32 entry-learning process.

STM32的USART操作，从零开如讲解，细仔深入，希望能帮到初学者-STM32 USART operation from scratch, such as explaining, careful in-depth, and I hope to help beginners