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...	...	@@ -474,6 +474,25 @@
474	474
475	475	== **2.1 V-Box connect with test server(General Example)** ==
476	476
	477	+The following example is trying to publish to the topic "testtopic/test/no1/7890", and subscribe the topic "testtopic/test/no1/123456".
	478	+
	479	+And the JSON message is like follows:
	480	+
	481	+{{code language="JSON"}}
	482	+{
	483	+ "timestamp": 1631152760,
	484	+ "messageId": 1,
	485	+ "event": "test_data",
	486	+ "mfrs": "HMI/box",
	487	+ "data":
	488	+ {
	489	+ "id" : 1436217747670454274,
	490	+ "waterlevel" : 48,
	491	+ "temperture" : 23
	492	+ }
	493	+}
	494	+{{/code}}
	495	+
477	477	{{code language="lua"}}
478	478	--MQTT configuration table
479	479	local MQTT_CFG={}
...	...	@@ -541,6 +541,11 @@
541	541	g_mq:subscribe(SUBSCRIBE_TOPIC, 0)
542	542	end
543	543
	563	+--Offline callback function
	564	+function mqtt_msg_offline(cause)
	565	+ print("mqtt offline, cause:", cause)
	566	+end
	567	+
544	544	-- Received message callback function
545	545	function mqtt_msg_callback(topic, msg)
546	546	print("topic:", topic)