UART_Send_handle

代码说明：

  这是一个很好的基于verilog的串口通信422模块，已经经过多次验证，绝对可靠，可直接使用，本人已在工程中多次使用，无误差(This is a good serial communication based on Verilog 422 module, has been repeatedly verified, absolutely reliable, can be used directly, I have repeatedly used in the project, no error)