Changes for page MQTT Forward Instruction

Last modified by Kilight Cao on 2024/08/31 16:26
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From version < 46.1 >
edited by Xiaoling
on 2022/07/14 16:18
To version < 49.2 >
edited by Xiaoling
on 2022/08/09 16:18
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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 +
12 12  == 1.1  Support Devices ==
13 13  
14 14  
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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  
26 +
27 +
28 +
25 25  = 2.  Firmware Change Log for MQTT feature =
26 26  
27 27  
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32 32  * LG02_LG08-5.3.1580178039
33 33  ** Initiate version
34 34  
39 +
40 +
41 +
35 35  = 3.  MQTT forward operating principle =
36 36  
37 37  
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41 41  Below shows the network structure for MQTT forwarding.
42 42  
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 -* **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,
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.
45 45  
53 +
54 +
46 46  [[image:image-20220527133547-1.png]]
47 47  
48 48  General MQTT structure
49 49  
50 50  
60 +
51 51  == 3.2  How sensor data is forwarded ==
52 52  
53 53  
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54 54  In this MQTT forward feature, the key point is how the gateway process the sensor data.
55 55  
56 56  
67 +
57 57  === 3.2.1  Upstream ===
58 58  
70 +
59 59  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.
60 60  
61 61  (((
62 62  The data flow works as below diagram.
75 +
76 +
63 63  )))
64 64  
65 65  [[image:image-20220527134000-2.png]]
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76 76  
77 77  (((
78 78  
93 +
94 +
79 79  )))
80 80  
81 81  === 3.2.2  Downstream ===
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85 85  
86 86  (((
87 87  Below are the data flow for downstream.
104 +
105 +
88 88  )))
89 89  
90 90  [[image:image-20220527134038-3.png]]
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92 92  Downstream path
93 93  
94 94  
113 +
95 95  == 3.3  Macro Definition ==
96 96  
97 97  
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100 100  (((
101 101  Currently the (% style="color:#4f81bd" %)**-t (topic)**(%%) and (% style="color:#4f81bd" %)**-m (message)**(%%) support Macros.
102 102  
122 +
103 103  
104 104  )))
105 105  
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113 113  * HOSTNAME: Device Hostname
114 114  
115 115  
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137 +
116 116  === 3.3.2  -m message macro ===
117 117  
118 118  
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123 123  * JSON: Convert META to json format.
124 124  
125 125  
148 +
149 +
126 126  === 3.3.3  Example for Macro ===
127 127  
128 128  
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286 286  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/]].
287 287  
288 288  
313 +
289 289  == 4.2  Simulate via MQTT.fx utility ==
290 290  
291 291  
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317 317  
318 318  == 4.3  Simulate via Dragino Command Line ==
319 319  
345 +
320 320  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.
321 321  
322 322  In the Dragino Gateway, we use [[mosquitto client>>url:https://mosquitto.org/]] for MQTT connection.
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345 345  mosquitto_sub
346 346  
347 347  
374 +
348 348  == 4.4  Configure Dragino UI for MQTT connection ==
349 349  
377 +
350 350  This chapter are step by step to show to configure the Dragino Menu for MQTT auto connection.
351 351  
352 352  (((
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455 455  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.
456 456  
457 457  
486 +
458 458  === 4.5.1  Use LoRa Raw protocol for communication ~-~- For LG01/LG02 ===
459 459  
460 460  
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480 480  * Downstream: Listening broadcast message from gateway, and print it in console.
481 481  * The LoRa parameter settings in Arduino should match the LoRa settings in gateway, as below:
482 482  
512 +
513 +
483 483  [[image:image-20220527140354-18.png]]
484 484  
485 485  LoRa Parameter should match
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511 511  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.
512 512  
513 513  
514 -(% style="color:#4f81bd" %)**Video Instruction**(%%): (% style="color:blue" %)[[https:~~/~~/youtu.be/qJTY441-t90>>url:https://youtu.be/qJTY441-t90]]
545 +(% style="color:blue" %)**Video Instruction**(%%): (% style="color:blue" %)[[https:~~/~~/youtu.be/qJTY441-t90>>url:https://youtu.be/qJTY441-t90]]
515 515  )))
516 516  
517 517  (((
518 -(% 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.
549 +(% 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.
519 519  )))
520 520  
521 521  (((
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588 588  
589 589  (% class="box infomessage" %)
590 590  (((
591 -**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"**
622 +**mosquitto_pub -h 10.130.2.192 -p 1883 -t dragino-1d25dc/ -m "260211D,time,txt,hello,20,1,SF12,923300000,2"**
592 592  )))
593 593  
594 594  Or use [[MQTT.fx>>https://mqttfx.jensd.de/index.php/download]]
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609 609  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.
610 610  
611 611  
643 +
612 612  = 6.  How to ask for Support =
613 613  
614 614  

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