基于STM32，讲解任务切换，详细给出汇编参考，并完成一个简单的操作系统，实现了任务调度，对于OS的入门非常有好处，看懂了这个，后续其他例如FreeRTOS都是类似的原理。-Based on STM32, explaining task switching, given in detail with reference to the compilation, and complete a simple operating system, task scheduling, is very good