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9	9	Dragino LoRa/LoRaWAN gateway support MQTT forwarding. It can forward the sensor data from LoRa network to MQTT server , and vice verse.
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12	12	== 1.1  Support Devices ==
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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)
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25	25	= 2.  Firmware Change Log for MQTT feature =
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32	32	* LG02_LG08-5.3.1580178039
33	33	** Initiate version
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35	35	= 3.  MQTT forward operating principle =
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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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46	46	[[image:image-20220527133547-1.png]]
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48	48	General MQTT structure
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55	55	In this MQTT forward feature, the key point is how the gateway process the sensor data.
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58	58	=== 3.2.1  Upstream ===
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81	81	(((
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83	83	)))
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85	85	=== 3.2.2  Downstream ===
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90	90	(((
91	91	Below are the data flow for downstream.
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92	92	)))
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94	94	[[image:image-20220527134038-3.png]]
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118	118	* USERNAME: User ID (-u)
119	119	* HOSTNAME: Device Hostname
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121	121	=== 3.3.2  -m message macro ===
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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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130	130	=== 3.3.3  Example for Macro ===
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290	290	This section is an example to show how to set up LG01-N to communicate with a MQTT server. The MQTT server is a simple utility set up in a local PC. Note: User can set up same server via [[this instruction>>url:http://www.steves-internet-guide.com/install-mosquitto-broker/]].
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293	293	== 4.2  Simulate via MQTT.fx utility ==
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462	462	In above section, we have configured the UI to support MQTT upstream and downstream. We can simulate via Linux command. In this section, we will guide how to communicate with remote LoRa End Node for upstream and downstream.
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465	465	=== 4.5.1  Use LoRa Raw protocol for communication ~-~- For LG01/LG02 ===
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487	487	* Downstream: Listening broadcast message from gateway, and print it in console.
488	488	* The LoRa parameter settings in Arduino should match the LoRa settings in gateway, as below:
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490	490	[[image:image-20220527140354-18.png]]
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492	492	LoRa Parameter should match
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616	616	User can login the gateway's console and run (% style="color:#4f81bd" %)**logread -f**(%%). It will shows the output when there is packet arrive.User can see if it is correct.
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619	619	= 6.  How to ask for Support =
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