STM32 串口中断串口一串口二的设置方法及应用-STM32 serial port of a serial port interrupt method and application of the second set

串口编程基本用法，实现串口接收与发送的基本功能，适合初学stm32芯片的串口应用，可以自行修改源码，以便使用-Serial programming basic usage, the basic functions of the serial port receive and send for beginners stm32 chip serial applications can modify the source code to use。