串口RS232转WIFI模块，使用AT命令，单片机51源码程序，实现对WIFI模块的控制。-Serial RS232 to WIFI module, use the AT command, MCU 51 source program, to achieve the WIFI module control.

本程序会将WIFI模块发送的数据转发到USART1串口，同时将USART1串口接收到的数据转发给WIFI模块。这样客户就可以通过HL-340的USB转RS232串口线来测试WIFI模块的AT指令了。-The data in this program will be forwarded to the WIFI module sending USART1 serial port, while forwards USART1 receive serial data to WIFI module. So