使用nodemcu玩轉物聯網系列（四）：nodemcu獲取dht11溫溼度傳感器值

gpio.mode(2,gpio.OUTPUT)
wifi.setmode(wifi.STATION)
cfg = {}
cfg.ssid = "kyn"
cfg.pwd = "20160118"
wifi.sta.config(cfg)
wifi.sta.connect()

DeviceId = "587667371"
ProductId = "325428"
AuthoInfo = "test"
host = "183.230.40.39"
port = 6002
--定義傳感器針腳
dht_pin = 5


timer = tmr.create()
function con()
    if wifi.sta.getip() == nil then
        print("coneting........")
    else
        timer:stop()
        print("success!~")
        gpio.write(2,gpio.HIGH)
        print(wifi.sta.getip())
        client_hum = mqtt.Client(DeviceId,120,ProductId,AuthoInfo)
        client_hum:connect(host,port,0,function(client)
        print("connect success!")
        end)

		--定義函數，使用dht的read11方法，該方法會返回五個參數，分別爲：狀態
        function h()
        status,temp,humi,temp_dec, humi_dec = dht.read11(dht_pin)
        print("DHT Temperature:"..temp..";".."Humidity:"..humi)
        end
        --定時器
        tmr.create():alarm(1500,tmr.ALARM_AUTO,h)
    end
end