项目主要是串口通讯，定时向屏发送内容。设计多线程，定时器，主线程退出后如何安全退出子线程等。-Project is mainly a serial port communication, regularly send content to the screen. Design multithreaded, timer, the main thread after how to safely exit the child thread, etc. Please enter the text to

展讯SC6600D例程,包含定时器和串口通讯例子()