TCP回传，MiniARM通过跟PC机建立TCP连接，MiniARM把从PC机发过来的数据回发到PC机里，使用TCP_UDP_Debug.exe软件进行调试，在进行调试的时候需要设置PC机的网络环境-TCP return, MiniARM with the PC through the machine to establish TCP connection, MiniARM from PC machine sent back to the data sent to the PC machine