用MFC编写的数据包校验与常用校验算法（数据处理方法与串口通信用户层协议的编制）。编写的代码部分都有中文注释，对刚开始接触MFC的学习者来说是很好的资源！ -Prepared by MFC with the commonly used packet checksum checksum algorithm (data-processing methods and user layer protocol serial communication preparation). They are al

采用串口通信，发送AT信息，接收串口返回的信息，并根据解析数据进行相关操作-Serial communication, sending AT information, receive serial information returned, and analytical data

分析机顶盒与智能卡通信的串口数据解析TPDU()