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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	26	= 2.  Firmware Change Log for MQTT feature =
27	27
28	28
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33	33	* LG02_LG08-5.3.1580178039
34	34	** Initiate version
35	35
36		-
37	37	= 3.  MQTT forward operating principle =
38	38
39	39
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43	43	Below shows the network structure for MQTT forwarding.
44	44
45	45	* **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.
46		-* **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.
	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,
47	47
48	48	[[image:image-20220527133547-1.png]]
49	49
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50	50	General MQTT structure
51	51
52	52
53		-
54	54	== 3.2  How sensor data is forwarded ==
55	55
56	56
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59	59
60	60	=== 3.2.1  Upstream ===
61	61
62		-
63	63	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.
64	64
65	65	(((
66	66	The data flow works as below diagram.
67		-
68		-
69	69	)))
70	70
71	71	[[image:image-20220527134000-2.png]]
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98	98	Downstream path
99	99
100	100
101		-
102	102	== 3.3  Macro Definition ==
103	103
104	104
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107	107	(((
108	108	Currently the (% style="color:#4f81bd" %)**-t (topic)**(%%) and (% style="color:#4f81bd" %)**-m (message)**(%%) support Macros.
109	109
110		-
111	111
112	112	)))
113	113
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325	325
326	326	== 4.3  Simulate via Dragino Command Line ==
327	327
328		-
329	329	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.
330	330
331	331	In the Dragino Gateway, we use [[mosquitto client>>url:https://mosquitto.org/]] for MQTT connection.
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354	354	mosquitto_sub
355	355
356	356
357		-
358	358	== 4.4  Configure Dragino UI for MQTT connection ==
359	359
360		-
361	361	This chapter are step by step to show to configure the Dragino Menu for MQTT auto connection.
362	362
363	363	(((
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522	522	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.
523	523
524	524
525		-(% style="color:blue" %)**Video Instruction**(%%): (% style="color:blue" %)[[https:~~/~~/youtu.be/qJTY441-t90>>url:https://youtu.be/qJTY441-t90]]
	514	+(% style="color:#4f81bd" %)**Video Instruction**(%%): (% style="color:blue" %)[[https:~~/~~/youtu.be/qJTY441-t90>>url:https://youtu.be/qJTY441-t90]]
526	526	)))
527	527
528	528	(((
529		-(% 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.
	518	+(% 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.
530	530	)))
531	531
532	532	(((
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599	599
600	600	(% class="box infomessage" %)
601	601	(((
602		-**mosquitto_pub -h 10.130.2.192 -p 1883 -t dragino-1d25dc/ -m "260211D,time,txt,hello,20,1,SF12,923300000,2"**
	591	+**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"**
603	603	)))
604	604
605	605	Or use [[MQTT.fx>>https://mqttfx.jensd.de/index.php/download]]