源代码，嵌入式中会用到，代码的功能是读取桌面的文件，然后通过串口协议发送给单片机，这个源代码是上位机的功能，随后上传单片机的接收端的源代码-The function of the source code, are used in the embedded code is read the desktop file, then sent via a serial port protocol for single chip microcomputer, this source code is the