一、开发环境
文档：
nodemcu固件生成：https://nodemcu-build.com/
nodemcu使用文档：https://nodemcu.readthedocs.io/en/release/search.html
工具：
乐鑫Flash下载工 https://www.espressif.com.cn/zh-hans/support/download/other-tools
Lua开发工具ESPlorer(依赖于java)：https://esp8266.ru/esplorer/
安信可开发工具：
https://docs.ai-thinker.com/%E5%BC%80%E5%8F%91%E5%B7%A5%E5%85%B72
二、刷入nodemcu固件
1. 生成固件
https://nodemcu-build.com/中设置所需组件，填写邮箱生成固件，固件下载地址会发送到邮箱
integer和float两个固件的区别在于，integer无法进行浮点数运算。
2. 刷写固件
刷写完成
三、编辑运行代码
使用开发工具ESPlorer，波特率115200，选择esp8266的com口
输出提示，需要按esp8266的重置按钮
新建lua文件，写代码运行
print("hello!");
文件命名为init.lua，默认加载执行init.lua
写入esp8266
四、连接WiFi
代码
wificonf={}
wificonf.ssid="esp8266"
wificonf.pwd="esp82660123456"
wifi.setmode(wifi.STATION)
wifi.sta.config(wificonf)
wifi.sta.autoconnect(1)
wifi.sta.connect()
wifi.eventmon.register(wifi.eventmon.STA_DISCONNECTED, function(T)
printip = 0
print("Wifi disconnect!")
end)
wifi.eventmon.register(wifi.eventmon.STA_GOT_IP, function(T)
if printip == 0 then
print("Wifi connected!")
print("IP:"..T.IP)
end
printip = 1
end)
参考文章：https://blog.csdn.net/2401_84103060/article/details/138635740
五、HTTP-Server
ESP8266创建一个ap，启动http-server
wifi.setmode(wifi.SOFTAP)
ap_cfg =
{
ssid="ESP8266",
pwd="0123456789"
}
wifi.ap.config(ap_cfg)
dhcp_config ={}
dhcp_config.start = "192.168.8.2"
wifi.ap.dhcp.config(dhcp_config)
ap_ip_cfg =
{
ip="192.168.8.1",
netmask="255.255.255.0",
gateway="192.168.8.1"
}
wifi.ap.setip(ap_ip_cfg)
print('AP start...')
print("Config done, IP is "..wifi.ap.getip())
srv=net.createServer(net.TCP)
srv:listen(80,function(conn)
conn:on("receive",function(conn,payload)
print(payload)
conn:send("<h1> Hello, NodeMcu.</h1>")
end)
end)
浏览器访问
NodeMCU代码笔记
wifi.setmode(wifi.SOFTAP)
ap_cfg =
{
ssid="ESP8266",
pwd="helloesp8266"
}
wifi.ap.config(ap_cfg)
dhcp_config ={}
dhcp_config.start = "192.168.8.2"
wifi.ap.dhcp.config(dhcp_config)
ap_ip_cfg =
{
ip="192.168.8.1",
netmask="255.255.255.0",
gateway="192.168.8.1"
}
wifi.ap.setip(ap_ip_cfg)
print('AP start...')
print("Config done, IP is "..wifi.ap.getip())
print("Starting web server...")
srv = net.createServer(net.TCP, 30)
srv:listen(80, function(conn)
conn:on("receive", function(conn, payload)
local sLine, sEmpty, method, path, vars = string.match(payload, "([A-Z]+)%s-(.-)%s+HTTP/%d%.%d\r\n(.-)\r\n\r\n(.-)\r\n")
if method == "GET" then
if path == "/" then
local response = "<html><body><h1>Hello, NodeMCU!</h1></body></html>"
conn:send("HTTP/1.1 200 OK\r\n")
conn:send("Content-Type: text/html\r\n")
conn:send("Content-Length: " .. response:len() .. "\r\n\r\n")
conn:send(response)
else
conn:send("HTTP/1.1 404 Not Found\r\n")
conn:send("Content-Type: text/html\r\n")
conn:send("Content-Length: 0\r\n\r\n")
end
end
collectgarbage()
end)
conn:on("sent", function(conn) conn:close() end)
end)
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