使用nodemcu玩轉物聯網系列（五）：notemcu通過http協議獲取溫溼度傳感器值上傳onenet服務器

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


--聲明url和headers
url = 'http://api.heclouds.com/devices/'..DeviceId..'/datapoints?type=3'
headers = 'api-key:BO6XuBiKw07JRXakBNvn4JKX7MI=\r\n'

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)

        function h()
        status,temp,humi,temp_dec, humi_dec = dht.read11(dht_pin)
        print("DHT Temperature:"..temp..";".."Humidity:"..humi)

--http協議的post方法，注意參數全用單引號
--url:http://api.heclouds.com/devices/'..DeviceId..'/datapoints?type=3  採用的是設備ID
--headers:api-key:BO6XuBiKw07JRXakBNvn4JKX7MI=\r\n  用的是產品API-KEY，尾部 加\r\n
--回調函數：收到響應或發生錯誤時要調用的回調函數，發生錯誤時date爲-1，也就是＜0
--http.post(url, headers, body, callback)  [參照網站](https://nodemcu.readthedocs.io/en/master/modules/http/#httppost)
        http.post(url, headers, '{"DHT Temperature":'..temp..',"Humidity":'..humi..'}', function(code,date) 
            if(code < 0) then
                print("HTTP request failed")
               else
                print(code,date)
            end
            end)

     end
        
        tmr.create():alarm(1500,tmr.ALARM_AUTO,h)

    end
end

timer:alarm(1000,tmr.ALARM_AUTO,con)

參考文檔：
設備HTTP協議上傳數據到OneNET接口規範