Changes for page 2 Script

Last modified by Devin Chen on 2025/06/06 14:03

From 28.1 to 29.1 From 41.1 to 42.1

From version 29.1

edited by Hunter
on 2022/11/21 17:30

Change comment: There is no comment for this version

To version 41.1

edited by Hunter
on 2023/03/17 18:05

Change comment: There is no comment for this version

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@@ -349,7 +349,6 @@
  end
  {{/code}}
--
  == **1.8 How to parse value from HTTP response body** ==
  This example use [[https:~~/~~/www.weatherapi.com/>>https://www.weatherapi.com/]] as example, to show how to parse value from HTTP response body. When we input the city name into address "@HDW5050":
@@ -404,7 +404,7 @@
  {{/code}}
  (% class="wikigeneratedid" %)
--So we decode json into lua object to assign the value into addresses HDW6060(temperature), HDW7070(humidity) the code example like follows:
++So we decode json into lua object to assign the value into addresses HDW6060(temperature), HDW7070(humidity), the code example like follows:
  {{code language="lua"}}
  local APIkey = '70faaecf926b4341b1974006221711'
@@ -466,8 +466,9 @@
  (% class="mark" %)2.If your server requires SSL certificate to log in,please use OpenCloud.Because only OpenCloud platform can support to upload certificate
--(% class="wikigeneratedid" %)
++{{info}}
  **✎Note: **Before program the script of MQTT, please make sure the server(MQTT broker) can be connected through MQTT Client tool.
++{{/info}}
  (% class="wikigeneratedid" %)
  Tool link: **[[MQTT.fx>>http://mqttfx.jensd.de/index.php/download]]**
@@ -474,6 +474,25 @@
  == **2.1 V-Box connect with test server(General Example)** ==
++The following example is trying to publish to the topic "testtopic/test/no1/7890", and subscribe the topic "testtopic/test/no1/123456".
++
++And the JSON message is like follows:
++
++{{code language="JSON"}}
++{
++ "timestamp": 1631152760,
++ "messageId": 1,
++ "event": "test_data",
++ "mfrs": "HMI/box",
++ "data":
++  {
++   "id" : 1436217747670454274,
++   "waterlevel" : 48,
++   "temperture" : 23
++  }
++}
++{{/code}}
++
  {{code language="lua"}}
  --MQTT configuration table
  local MQTT_CFG={}
@@ -515,9 +515,13 @@
  --initialize mqtt
  function mqtt_init()
      print(string.format("mqtt init mqtt_url:%s mqtt_clientid:%s", MQTT_URL, MQTT_CLIENT_ID))
++    if g_mq then
++        mqtt.close() --Close mqtt object
++    end
      g_mq, err = mqtt.create(MQTT_URL, MQTT_CLIENT_ID) -- create mqtt object,and declare it as a global variable
      if g_mq then
          g_mq:on("message", mqtt_msg_callback) -- Register a callback for receiving messages
++        g_mq:on("offline", mqtt_msg_offline)  -- Register a callback for offline
          print("mqtt init success")
      else
          print("mqtt init failed:", err)
@@ -537,6 +537,11 @@
      g_mq:subscribe(SUBSCRIBE_TOPIC, 0)
  end
++--Offline callback function
++function mqtt_msg_offline(cause)
++    print("mqtt offline, cause:", cause)
++end
++
  -- Received message callback function
  function mqtt_msg_callback(topic, msg)
      print("topic:", topic)
@@ -575,9 +575,11 @@
          if g_mq:isconnected() then
              send_data()
          else
--            --if exceed 20 sec not connect, reconnect once
--            if os.time() - LAST_TIME > 20 then
++            --if exceed 5 sec not connect, reconnect once
++            if os.time() - LAST_TIME > 5 then
                  LAST_TIME = os.time()
++                --reinitial the mqtt object
++                mqtt_init()
                  --connect to mqtt or reconnect
                  mqtt_connect()
              end
@@ -1157,35 +1157,20 @@
  {{code language="java"}}
  {
--
    "Version": "2012-10-17",
--
    "Statement": [
--
      {
--
        "Effect": "Allow",
--
        "Action": [
--
          "iot:Connect",
--
          "iot:Publish",
--
          "iot:Subscribe",
--
          "iot:Receive",
--
          "greengrass:Discover"
--
        ],
--
        "Resource": "*"
--
      }
--
    ]
--
  }
  {{/code}}
@@ -1250,185 +1250,190 @@
  [[image:image-20220709165402-20.png]]
++{{info}}
++**✎Note:** Before using the following demo script, please make sure the V-Box firmware is newer than 22110701
++{{/info}}
++
++{{code language="lua"}}
  sprint = print
--~-~-Cloud mode interface to obtain the MQTT information configured by the cloud platform: (5 returns, namely the server address, client ID, connection table, last word table, certificate table)
++--Cloud mode interface to obtain the MQTT information configured by the cloud platform: (5 returns, namely the server address, client ID, connection table, last word table, certificate table)
  local MQTT_URL, MQTT_CLIENTID, MQTT_CFG, MQTT_LWT, MQTT_CART = mqtt.setup_cfg()
--~-~-publish to topics
++--publish to topics
  local pub_RE_TOPIC = string.format('TEST')
--~-~-Subscribe topics
++--Subscribe topics
  local Subscribe_RE_TOPIC1 = string.format('TEST')
--~-~-variable
++--variable
  local last_time = 0
--~-~-Timing main function
++--Timing main function
  function aws.main()
--   sprint(os.date("%Y-%m-%d %H:%M %S", os.time()) .. " aws.main start")
++            sprint(os.date("%Y-%m-%d %H:%M %S", os.time()) .. " aws.main start")
--   if g_mq then
++            if g_mq then
--        if g_mq:isconnected() then
++                if g_mq:isconnected() then
--            send_Data()
++                    send_Data()
--        else
++                else
--            if os.time() - last_time > 5 then
++                if os.time() - last_time > 5 then
--                last_time = os.time()
++                    last_time = os.time()
--                mymqtt_connect()
++                    mymqtt_connect()
++                end
++
              end
--        end
++            else
--    else
++                mymqtt_init()
--        mymqtt_init()
++            end
--    end
++            sprint(os.date("%Y-%m-%d %H:%M %S", os.time()) .. " aws.main end")
--    sprint(os.date("%Y-%m-%d %H:%M %S", os.time()) .. " aws.main end")
--
  end
--~-~- Initialize MQTT
++-- Initialize MQTT
++
  function mymqtt_init()
--    sprint(string.format("mqtt init mqtt_url:%s mqtt_clientid:%s", MQTT_URL, MQTT_CLIENTID))
++                sprint(string.format("mqtt init mqtt_url:%s mqtt_clientid:%s", MQTT_URL, MQTT_CLIENTID))
--    g_mq, err = mqtt.create(MQTT_URL, MQTT_CLIENTID) ~-~- Create the object and declare it as a global variable
++                g_mq, err = mqtt.create(MQTT_URL, MQTT_CLIENTID, 1) -- Create the object and declare it as a global variable, 1 means using the domain to connect
--    if g_mq then
++                if g_mq then
--        g_mq:on("message", mymqtt_msg_callback) ~-~- Register to receive message callbacks
++                    g_mq:on("message", mymqtt_msg_callback) -- Register to receive message callbacks
--        sprint("mqtt init success")
++                    sprint("mqtt init success")
--    else
++                else
--        sprint("mqtt init failed:", err)
++                    sprint("mqtt init failed:", err)
--    end
++                end
  end
--~-~- Connect to MQTT server
++-- Connect to MQTT server
  function mymqtt_connect()
--    sprint("mqtt connecting...")
++                sprint("mqtt connecting...")
--    local stat, err = g_mq:connect(MQTT_CFG,MQTT_LWT, MQTT_CART)
++                local stat, err = g_mq:connect(MQTT_CFG,MQTT_LWT, MQTT_CART)
--    if stat == nil then
++                if stat == nil then
--        sprint("mqtt connect failed:", err)
++                    sprint("mqtt connect failed:", err)
--        return
++                    return
--    else
++                else
--        sprint("mqtt connected")
++                    sprint("mqtt connected")
--    end
++                end
--    g_mq:subscribe(TEST, 0)
++                g_mq:subscribe(Subscribe_RE_TOPIC1, 0)
  end
--~-~- Receive MQTT message callback function
++-- Receive MQTT message callback function
  function mymqtt_msg_callback(topic, msg)
--    print("topic:",topic)
++                print("topic:",topic)
--    print("revdata:",msg)
++                print("revdata:",msg)
--    local revData = json.decode(msg)
++                local revData = json.decode(msg)
--    print (revData)
++                print (revData)
-- if topic == Subscribe_RE_TOPIC1 then ~-~-Process topic information subscribed from the cloud
++                if topic == Subscribe_RE_TOPIC1 then --Process topic information subscribed from the cloud
--if string.match(topic,Subscribe_RE_TOPIC1) then
++                    if string.match(topic,Subscribe_RE_TOPIC1) then
--    ~-~-if revData ~~= nil then
++                        --if revData ~= nil then
--        for k,v in pairs (revData) do
++                        for k,v in pairs (revData) do
--            print("printing revdata after kv here")
++                            print("printing revdata after kv here")
--            print (k,v)
++                            print (k,v)
--        end
++                        end
--        print ("current state is",fanstate)
++                    print ("current state is",fanstate)
--    ~-~-end
++                        --end
--end
++                    end
--end
++                end
  end
--~-~-Get real-time data
++--Get real-time data
++
  function getData()
--    local jdata = {}
++                local jdata = {}
--    local addr = bns_get_alldata()
++                local addr = bns_get_alldata()
--    print(json.encode(addr))
++                print(json.encode(addr))
--    for i,v in pairs(addr) do
++                for i,v in pairs(addr) do
--        if v[2] == 1 then
++                    if v[2] == 1 then
--           jdata[v[3]] = v[4]
++                        jdata[v[3]] = v[4]
--        end
++                    end
--    end
++                end
--    return jdata
++                return jdata
  end
--~-~-send data
++--send data
  function send_Data()
--    local pub_data =
++                local pub_data =
++                {
++                    123
++                }
--    {
--
--123
--
--}
--
  sprint(json.encode(pub_data))
  print("..........",pub_RE_TOPIC)
--    return g_mq:publish(pub_RE_TOPIC, json.encode(pub_data), 0, 0)
++                return g_mq:publish(pub_RE_TOPIC, json.encode(pub_data), 0, 0)
  end
++{{/code}}
  Get message in AWS

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