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1		-XWiki.Xiaoling
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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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11	11
12		-
13	13	== 1.1  Support Devices ==
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15	15
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16	16	This MQTT forward instruction is for below devices:
17	17
18	18	* Firmware Version > LG02_LG08-5.3.1580178039 [[Firmware Download>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/LPS8/Firmware/Release/]]
19		-* LG01N, OLG01N ((% style="color:red" %)**Warning**(%%): LG01-P LG01-S use another instruction: [[MQTT for LG01-P/LG01S>>doc:Main.Through MQTT to upload data.WebHome]])
	18	+* LG01N, OLG01N ((% style="color:red" %)**Warning**(%%): LG01-P LG01-S use another instruction: [[MQTT for LG01-P/LG01S>>doc:Through MQTT to upload data.WebHome]])
20	20	* LG02, OLG02
21	21	* LG308, DLOS8
22	22	* LPS8
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23	23	* LIG16
24	24	* MS14 series if installed with the same firmware. (in this case, the MQTT forward will work , but no LoRa support)
25	25
26		-
27		-
28	28	= 2.  Firmware Change Log for MQTT feature =
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30	30
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35	35	* LG02_LG08-5.3.1580178039
36	36	** Initiate version
37	37
38		-
39		-
40	40	= 3.  MQTT forward operating principle =
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42	42
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48	48	* **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.
49	49	* **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	50
51		-
52	52	[[image:image-20220527133547-1.png]]
53	53
54	54	General MQTT structure
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61	61	In this MQTT forward feature, the key point is how the gateway process the sensor data.
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63	63
64		-
65	65	=== 3.2.1  Upstream ===
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67	67
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87	87
88	88	(((
89	89
90		-
91		-
92	92	)))
93	93
94	94	=== 3.2.2  Downstream ===
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98	98
99	99	(((
100	100	Below are the data flow for downstream.
101		-
102		-
103	103	)))
104	104
105	105	[[image:image-20220527134038-3.png]]
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129	129	* USERNAME: User ID (-u)
130	130	* HOSTNAME: Device Hostname
131	131
132		-
133		-
134	134	=== 3.3.2  -m message macro ===
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136	136
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140	140	* META: Completely sensor data with time stamp and rssi
141	141	* JSON: Convert META to json format.
142	142
143		-
144		-
145	145	=== 3.3.3  Example for Macro ===
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305	305	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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307	307
308		-
309	309	== 4.2  Simulate via MQTT.fx utility ==
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478	478	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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480	480
481		-
482	482	=== 4.5.1  Use LoRa Raw protocol for communication ~-~- For LG01/LG02 ===
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504	504	* Downstream: Listening broadcast message from gateway, and print it in console.
505	505	* The LoRa parameter settings in Arduino should match the LoRa settings in gateway, as below:
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507		-
508	508	[[image:image-20220527140354-18.png]]
509	509
510	510	LoRa Parameter should match
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634	634	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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636	636
637		-
638	638	= 6.  How to ask for Support =
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640	640