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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	+
25	25	= 2.  Firmware Change Log for MQTT feature =
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27	27
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32	32	* LG02_LG08-5.3.1580178039
33	33	** Initiate version
34	34
	37	+
	38	+
35	35	= 3.  MQTT forward operating principle =
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37	37
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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	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.
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	50	+
46	46	[[image:image-20220527133547-1.png]]
47	47
48	48	General MQTT structure
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118	118	* USERNAME: User ID (-u)
119	119	* HOSTNAME: Device Hostname
120	120
	126	+
	127	+
121	121	=== 3.3.2  -m message macro ===
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123	123
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127	127	* META: Completely sensor data with time stamp and rssi
128	128	* JSON: Convert META to json format.
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	138	+
130	130	=== 3.3.3  Example for Macro ===
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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"**
	607	+**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]]