ALIENTEK MINISTM32 实验3 串口实验

代码说明：

  本实验,STM32通过串口1和上位机对话，STM32在收到上位机发过来的字符串(以回车换 行结束)后，原原本本的返回给上位机。下载后，DS0闪烁，提示程序在运行，同时每隔一定时间，通过串口1输出一段信息到电脑。(In this experiment, STM32 through the serial port 1 and host computer dialogue, STM32 received the host computer sent to the string (in return for After the end of the line), return to the host computer. After downloading, the DS0 flashes, prompting the program to run while each A certain time, through the serial port 1 output a piece of information to the computer.)