nodemcu 例程，获取温湿度

wifi.setmode(wifi.STATION)
cfg = {}
cfg.ssid =
cfg.pwd =
wifi.sta.config(cfg)
wifi.sta.connect(cfg)
                
device_id =
Product_id=
AuthInfo=
UPbroker =
UPport =

time1 = tmr.create()              
time2 = tmr.create()     
Temp_Humi_Pin = 5      

UPbroker =     
UPport =
     
ip = wifi.sta.getip()     
    if wifi.sta.getip() == nil then 
        print("Disconnect,Waiting For IP...")
    else
        time1:stop()     
        print("连接成功")
       
      
        client_TempHumiLed = mqtt.Client("device_id",120,"Product_id","AuthInfo",false)
        client_TempHumiLed:connect(UPbroker,UPport,0,0,function(client)
            print(" connect success!")
        end)
       
        time2:alarm(1500, tmr.ALARM_AUTO, Up_AC_Message)
    end
end

function Up_AC_Message()
    status,temp,humi,temp_dec,humi_dec = dht.read11(Temp_Humi_Pin)
    weather = {}                                                
    weather.temperature = temp    
    weather.humidity = humi    
    ok,weather_message = pcall(sjson.encode, weather)
    header = string.char(3, 0, string.len(weather_message))..weather_message
    client_TempHumiLed:publish("$dp",header,0,0,function(client)
        print("PUBLISH weather SUCCESS!")
    end)
end

time1:alarm(1000, tmr.ALARM_AUTO, Reconnect)