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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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13	13	== 1.1  Support Devices ==
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28		-
29	29	= 2.  Firmware Change Log for MQTT feature =
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41		-
42	42	= 3.  MQTT forward operating principle =
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51	51	* **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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54		-
55	55	[[image:image-20220527133547-1.png]]
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57	57	General MQTT structure
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64	64	In this MQTT forward feature, the key point is how the gateway process the sensor data.
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67		-
68	68	=== 3.2.1  Upstream ===
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91	91	(((
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95	95	)))
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97	97	=== 3.2.2  Downstream ===
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102	102	(((
103	103	Below are the data flow for downstream.
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106	106	)))
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108	108	[[image:image-20220527134038-3.png]]
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138	138	=== 3.3.2  -m message macro ===
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150	150	=== 3.3.3  Example for Macro ===
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310	310	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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314	314	== 4.2  Simulate via MQTT.fx utility ==
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483	483	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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487	487	=== 4.5.1  Use LoRa Raw protocol for communication ~-~- For LG01/LG02 ===
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509	509	* Downstream: Listening broadcast message from gateway, and print it in console.
510	510	* The LoRa parameter settings in Arduino should match the LoRa settings in gateway, as below:
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514	514	[[image:image-20220527140354-18.png]]
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516	516	LoRa Parameter should match
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620	620	(% class="box infomessage" %)
621	621	(((
622		-**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"**
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625	625	Or use [[MQTT.fx>>https://mqttfx.jensd.de/index.php/download]]
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640	640	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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644	644	= 6.  How to ask for Support =
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