nodemcu-firmware/lua_modules/bh1750/bh1750_Example2.lua

-- ***************************************************************************
-- BH1750 Example Program for ESP8266 with nodeMCU
-- BH1750 compatible tested 2015-1-30
--
-- Written by xiaohu
--
-- MIT license, http://opensource.org/licenses/MIT
-- ***************************************************************************
--Updata to Lelian

--Ps 需要改动的地方LW_GATEWAY（乐联的设备标示），USERKEY（乐联userkey）
--Ps You nees to rewrite the LW_GATEWAY（Lelian's Device ID），USERKEY（Lelian's userkey）
local bh1750 = require("bh1750")

local sda = 6 -- sda pin, GPIO12
local scl = 5 -- scl pin, GPIO14
local ServerIP

do
  bh1750.init(sda, scl)

  tmr.create():alarm(60000, tmr.ALARM_AUTO, function()
    bh1750.read()
    local l = bh1750.getlux()
    --定义数据变量格式 Define the veriables formate
    local PostData = "[{\"Name\":\"T\",\"Value\":\"" ..(l / 100).."."..(l % 100).."\"}]"
     --创建一个TCP连接 Create a TCP Connection
    local socket = net.createConnection(net.TCP, 0)
    --域名解析IP地址并赋值  DNS...it
    socket:dns("www.lewei50.com", function(_, ip)
      ServerIP = ip
      print("Connection IP:" .. ServerIP)
    end)

    --开始连接服务器  Connect the sever
    socket:connect(80, ServerIP)
    socket:on("connection", function() end)

    --HTTP请求头定义  HTTP Head
    socket:send("POST /api/V1/gateway/UpdateSensors/LW_GATEWAY HTTP/1.1\r\n" ..
     "Host: www.lewei50.com\r\n" ..
     "Content-Length: " .. string.len(PostData) .. "\r\n" ..
     "userkey: USERKEY\r\n\r\n" ..
     PostData .. "\r\n")

    --HTTP响应内容  Print the HTTP response
    socket:on("receive", function(sck, response) -- luacheck: no unused
      print(response)
    end)
  end)
end