ESP8266测试代码，用51单片机快速的测试，你ESP8266模块是否可用。-ESP8266 test code, with 51 MCU quick test, you ESP8266 module is available.

此部分程序为ESP8266 wifi模块在AP模式下与电脑串口的通信程序-This part of the program for the ESP8266 wifi module in AP mode with the computer serial port communication program