WindowsFormsApplication1

代码说明：

  可以实现上位机和下位机之间的串口通信，收发正常，一个简单的串口助手，应该没问题，希望和大家一起讨论。(Can achieve serial communication between the host computer and the lower computer, send and receive normal, a simple serial assistant, it should be no problem, and we hope to discuss together.)