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22	22	* LIG16
23	23	* MS14 series if installed with the same firmware. (in this case, the MQTT forward will work , but no LoRa support)
24	24
	25	+
	26	+
	27	+
25	25	= 2.  Firmware Change Log for MQTT feature =
26	26
27	27
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32	32	* LG02_LG08-5.3.1580178039
33	33	** Initiate version
34	34
	38	+
	39	+
	40	+
35	35	= 3.  MQTT forward operating principle =
36	36
37	37
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41	41	Below shows the network structure for MQTT forwarding.
42	42
43	43	* **For Uplink:**  The sensor sends data to LoRa Gateway via LoRa wireless, The gateway will process these data and forward to remote MQTT Broker via Internet.
44		-* **For Downlink:** The gateway subscribe a topic in the MQTT broker, when there is update on the topic, the gateway will know and broadcast the data to Local LoRa network.
	50	+* **For Downlink:** The gateway subscribe a topic in the MQTT broker, when there is update on the topic, the gateway will know and broadcast the data to Local LoRa network,
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46	46	[[image:image-20220527133547-1.png]]
47	47
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48	48	General MQTT structure
49	49
50	50
51		-
52	52	== 3.2  How sensor data is forwarded ==
53	53
54	54
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57	57
58	58	=== 3.2.1  Upstream ===
59	59
60		-
61	61	Assume there are two sensor nodes, their ID are Node1 ID: 6734 , Node2 ID: 7456. In the remote MQTT broker there are two topics: Topic1: /channel/765800, Topic2: /channel/367860. We can set up in the gateway to map Node1 to Topic1 and Node2 to Topic2. So when there is a sensor data from Node1, the gateway will forward the data to Topic1, when there is sensor data from Node2, the gateway will forward to Topic2.
62	62
63	63	(((
64	64	The data flow works as below diagram.
65		-
66		-
67	67	)))
68	68
69	69	[[image:image-20220527134000-2.png]]
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96	96	Downstream path
97	97
98	98
99		-
100	100	== 3.3  Macro Definition ==
101	101
102	102
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105	105	(((
106	106	Currently the (% style="color:#4f81bd" %)**-t (topic)**(%%) and (% style="color:#4f81bd" %)**-m (message)**(%%) support Macros.
107	107
108		-
109	109
110	110	)))
111	111
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321	321
322	322	== 4.3  Simulate via Dragino Command Line ==
323	323
324		-
325	325	For first try of MQTT connection, simulate via command line is recommend, there are many servers / connection type for MQTT. They are using different connection parameters. Simulating the connection via command line will help us rapidly connect to server and debug.
326	326
327	327	In the Dragino Gateway, we use [[mosquitto client>>url:https://mosquitto.org/]] for MQTT connection.
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350	350	mosquitto_sub
351	351
352	352
353		-
354	354	== 4.4  Configure Dragino UI for MQTT connection ==
355	355
356		-
357	357	This chapter are step by step to show to configure the Dragino Menu for MQTT auto connection.
358	358
359	359	(((
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518	518	When use test this feature, please use the version higher then : (% style="color:#4f81bd" %)**LG02_LG08~-~-build-v5.4.1593400722-20200629-1120**(%%), in this version, the upload format is changed and readable, which is easier for integration.
519	519
520	520
521		-(% style="color:blue" %)**Video Instruction**(%%): (% style="color:blue" %)[[https:~~/~~/youtu.be/qJTY441-t90>>url:https://youtu.be/qJTY441-t90]]
	518	+(% style="color:#4f81bd" %)**Video Instruction**(%%): (% style="color:blue" %)[[https:~~/~~/youtu.be/qJTY441-t90>>url:https://youtu.be/qJTY441-t90]]
522	522	)))
523	523
524	524	(((
525		-(% style="color:blue" %)**Step 1**(%%): Refer [[Communicate with ABP End Node>>Communicate with ABP End Node without LoRaWAN Network Server --- LG308]] to know how to set up LG308 to work with LoRaWAN End node.
	522	+(% style="color:blued" %)**Step 1**(%%): Refer [[Communicate with ABP End Node>>Communicate with ABP End Node without LoRaWAN Network Server --- LG308]] to know how to set up LG308 to work with LoRaWAN End node.
526	526	)))
527	527
528	528	(((
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595	595
596	596	(% class="box infomessage" %)
597	597	(((
598		-**mosquitto_pub -h 10.130.2.192 -p 1883 -t dragino-1d25dc/ -m "260211D,time,txt,hello,20,1,SF12,923300000,2"**
	595	+**mosquitto_pub -h 10.130.2.192 -p 1883 -t dragino-1d25dc/ -m "260211D,time,txt,hello,20,1,SF12,923300000,2 > /var/iot/push/test"**
599	599	)))
600	600
601	601	Or use [[MQTT.fx>>https://mqttfx.jensd.de/index.php/download]]