如何使用集成了ESP8266芯片的NodeMCU以配置一个可交互的TCP服务器

https://github.com/nodemcu/nodemcu-firmware/blob/master/lua_examples/http-client.lua

看示例代码，实现一个http服务器，至于交互什么，要看你的需求~

-- Support HTTP and HTTPS, For example

-- HTTP POST Example with JSON header and body

http.post("http://somewhere.acceptjson.com/",

"Content-Type: application/json\r\n",

"{\"hello\":\"world\"}",

function(code, data)

print(code)

print(data)

end)

-- HTTPS GET Example with NULL header

http.get("https://www.vowstar.com/nodemcu/","",

function(code, data)

print(code)

print(data)

end)

-- You will get

-- >200

-- hello nodemcu

-- HTTPS DELETE Example with NULL header and body

http.delete("https://10.0.0.2:443","","",

function(code, data)

print(code)

print(data)

end)

-- HTTPS PUT Example with NULL header and body

http.put("https://testput.somewhere/somewhereyouput.php","","",

function(code, data)

print(code)

print(data)

end)

-- HTTP RAW Request Example, use more HTTP/HTTPS request method

http.request("http://www.apple.com:80/library/test/success.html","GET","","",

function(code, data)

print(code)

print(data)

end)

在使用前要确保电压为3.3V 接线为3v3- 3.3V电源 RX和TX分别接USB转串口线的TX和RX，即要交叉着接。最后还有一个EN引脚接到3.3V置高。 串口初始波特率为115200(可修改)。最后上电连接电脑串口终端如下图

串口设置如上图，看到乱码不要慌，属正常现象，这里重点说一下一定要把（发送新行）勾上，不然指令不起作用。如果其他串口软件没有这个选项，那么在每个指令后面都要按一下回车键，如果是使用单片机发指令则要跟上"\r\n"。最终上电后出现ready,可以直接输入测试指令AT,返回OK字样表示模块正常。

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