Changes for page MQTT Forward Instruction

Last modified by Xiaoling on 2022/09/02 18:11
<
From version < 50.1
edited by Xiaoling
on 2022/09/02 18:11
To version < 46.2 >
edited by Xiaoling
on 2022/07/14 16:19
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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.
10 10  
11 11  
12 -
13 13  == 1.1  Support Devices ==
14 14  
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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25 25  
26 26  
27 27  
27 +
28 28  = 2.  Firmware Change Log for MQTT feature =
29 29  
30 30  
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37 37  
38 38  
39 39  
40 +
40 40  = 3.  MQTT forward operating principle =
41 41  
42 42  
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46 46  Below shows the network structure for MQTT forwarding.
47 47  
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 -* **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 +* **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
55 55  
56 56  
57 -
58 58  == 3.2  How sensor data is forwarded ==
59 59  
60 60  
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61 61  In this MQTT forward feature, the key point is how the gateway process the sensor data.
62 62  
63 63  
64 -
65 65  === 3.2.1  Upstream ===
66 66  
67 -
68 68  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.
69 69  
70 70  (((
71 71  The data flow works as below diagram.
72 -
73 -
74 74  )))
75 75  
76 76  [[image:image-20220527134000-2.png]]
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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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107 107  Downstream path
108 108  
109 109  
110 -
111 111  == 3.3  Macro Definition ==
112 112  
113 113  
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116 116  (((
117 117  Currently the (% style="color:#4f81bd" %)**-t (topic)**(%%) and (% style="color:#4f81bd" %)**-m (message)**(%%) support Macros.
118 118  
119 -
120 120  
121 121  )))
122 122  
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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 ===
135 135  
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 ===
146 146  
147 147  
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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/]].
306 306  
307 307  
308 -
309 309  == 4.2  Simulate via MQTT.fx utility ==
310 310  
311 311  
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337 337  
338 338  == 4.3  Simulate via Dragino Command Line ==
339 339  
340 -
341 341  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.
342 342  
343 343  In the Dragino Gateway, we use [[mosquitto client>>url:https://mosquitto.org/]] for MQTT connection.
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366 366  mosquitto_sub
367 367  
368 368  
369 -
370 370  == 4.4  Configure Dragino UI for MQTT connection ==
371 371  
372 -
373 373  This chapter are step by step to show to configure the Dragino Menu for MQTT auto connection.
374 374  
375 375  (((
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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.
479 479  
480 480  
481 -
482 482  === 4.5.1  Use LoRa Raw protocol for communication ~-~- For LG01/LG02 ===
483 483  
484 484  
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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:
506 506  
507 -
508 508  [[image:image-20220527140354-18.png]]
509 509  
510 510  LoRa Parameter should match
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536 536  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.
537 537  
538 538  
539 -(% style="color:blue" %)**Video Instruction**(%%): (% style="color:blue" %)[[https:~~/~~/youtu.be/qJTY441-t90>>url:https://youtu.be/qJTY441-t90]]
518 +(% style="color:#4f81bd" %)**Video Instruction**(%%): (% style="color:blue" %)[[https:~~/~~/youtu.be/qJTY441-t90>>url:https://youtu.be/qJTY441-t90]]
540 540  )))
541 541  
542 542  (((
543 -(% 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.
522 +(% 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.
544 544  )))
545 545  
546 546  (((
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613 613  
614 614  (% class="box infomessage" %)
615 615  (((
616 -**mosquitto_pub -h 10.130.2.192 -p 1883 -t dragino-1d25dc/ -m "260211D,time,txt,hello,20,1,SF12,923300000,2"**
595 +**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"**
617 617  )))
618 618  
619 619  Or use [[MQTT.fx>>https://mqttfx.jensd.de/index.php/download]]
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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.
635 635  
636 636  
637 -
638 638  = 6.  How to ask for Support =
639 639  
640 640  

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