Changes for page MQTT Forward Instruction
Last modified by Kilight Cao on 2024/08/31 16:26
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... ... @@ -1,18 +1,13 @@ 1 - **~ontents:**1 += INTRODUCTION = 2 2 3 -{{toc/}} 4 - 5 - 6 -= 1. Introduction = 7 - 8 8 Dragino LoRa/LoRaWAN gateway support MQTT forwarding. It can forward the sensor data from LoRa network to MQTT server , and vice verse. 9 9 10 -== 1.1Support Devices ==5 +== Support Devices == 11 11 12 12 This MQTT forward instruction is for below devices: 13 13 14 14 * Firmware Version > LG02_LG08-5.3.1580178039 [[Firmware Download>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/LPS8/Firmware/Release/]] 15 -* LG01N, OLG01N ( (% class="mark" %)**Warning**(%%): LG01-P LG01-S use another instruction: [[MQTT for LG01-P/LG01S>>url:https://wiki.dragino.com/index.php/Through_MQTT_to_upload_data]])10 +* LG01N, OLG01N (Warning: LG01-P LG01-S use another instruction: [[MQTT for LG01-P/LG01S>>url:https://wiki.dragino.com/index.php/Through_MQTT_to_upload_data]]) 16 16 * LG02, OLG02 17 17 * LG308, DLOS8 18 18 * LPS8 ... ... @@ -20,77 +20,65 @@ 20 20 * MS14 series if installed with the same firmware. (in this case, the MQTT forward will work , but no LoRa support) 21 21 22 22 23 - =2. Firmware Change Log for MQTT feature =18 +\\ 24 24 25 -((( 20 += Firmware Change Log for MQTT feature = 21 + 26 26 This instruction is wrote start from LG02_LG08-5.3.1580178039. Below is related change log since this version of firmware. 27 -))) 28 28 29 29 * LG02_LG08-5.3.1580178039 30 30 ** Initiate version 31 31 32 32 33 - =3. MQTT forward operating principle =28 +\\ 34 34 35 -= =3.1NetworkStructure ==30 += MQTT forward operating principle = 36 36 32 +== Network Structure == 33 + 37 37 Below shows the network structure for MQTT forwarding. 38 38 39 39 * 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. 40 40 * 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, 41 41 42 -[[image:https://wiki.dragino.com/images/thumb/4/45/MQTT_Forward_1.png/600px-MQTT_Forward_1.png||height="348" width="600"]] 39 +[[~[~[image:https://wiki.dragino.com/images/thumb/4/45/MQTT_Forward_1.png/600px-MQTT_Forward_1.png~|~|height="348" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:MQTT_Forward_1.png]] 43 43 44 44 General MQTT structure 45 45 43 +== How sensor data is forwarded == 46 46 47 -== 3.2 How sensor data is forwarded == 48 - 49 49 In this MQTT forward feature, the key point is how the gateway process the sensor data. 50 50 47 +=== Upstream === 51 51 52 -=== 3.2.1 Upstream === 53 - 54 54 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. 55 55 56 -((( 57 57 The data flow works as below diagram. 58 -))) 59 59 60 60 [[~[~[image:https://wiki.dragino.com/images/thumb/2/2a/MQTT_Forward_2.png/600px-MQTT_Forward_2.png~|~|height="355" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:MQTT_Forward_2.png]] 61 61 62 -((( 63 63 Upstream path 64 -))) 65 65 66 -((( 67 67 Note: The sensor data can base or LoRa or other method, as long as there are data on the file /var/iot/channels. /span> 68 -))) 69 69 70 -((( 71 - 72 -))) 59 +=== Downstream === 73 73 74 -=== 3.2.2 Downstream === 75 - 76 76 The gateway subscribes to a topic of the remote MQTT broker topic. When there is some one publish a value on this topic. The gateway will get it and broadcast to local LoRa Network. 77 77 78 -((( 79 79 Below are the data flow for downstream. 80 -))) 81 81 82 -[[image:https://wiki.dragino.com/images/thumb/3/3a/MQTT_Forward_3.png/600px-MQTT_Forward_3.png||height="368" width="600"]] 65 +[[~[~[image:https://wiki.dragino.com/images/thumb/3/3a/MQTT_Forward_3.png/600px-MQTT_Forward_3.png~|~|height="368" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:MQTT_Forward_3.png]] 83 83 84 84 Downstream path 85 85 86 86 87 -== 3.3Macro Definition ==70 +== Macro Definition == 88 88 89 89 The MQTT publish command use Macro settings to generate flexible upstream payload for MQTT publish. 90 90 91 -Currently the (% class="mark" %)**-t (topic)**(%%)and(% class="mark" %)**-m (message)**(%%)support Macros.74 +Currently the -t (topic) and -m (message) support Macros. 92 92 93 -=== 3.3.1-t topic macro ===76 +=== -t topic macro === 94 94 95 95 * CHANNEL: Remote Channel ID 96 96 * CLIENTID: Client ID , Same as -i ... ... @@ -98,7 +98,7 @@ 98 98 * USERNAME: User ID (-u) 99 99 * HOSTNAME: Device Hostname 100 100 101 -=== 3.3.2-m message macro ===84 +=== -m message macro === 102 102 103 103 * HOSTNAME: Device Hostname 104 104 * CHANNEL: Remote Channel ID ... ... @@ -106,7 +106,7 @@ 106 106 * META: Completely sensor data with time stamp and rssi 107 107 * JSON: Convert META to json format. 108 108 109 -=== 3.3.3Example for Macro ===92 +=== Example for Macro === 110 110 111 111 [[~[~[image:https://wiki.dragino.com/images/thumb/c/c7/MQTT_Command_9.png/600px-MQTT_Command_9.png~|~|height="385" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:MQTT_Command_9.png]] 112 112 ... ... @@ -126,8 +126,11 @@ 126 126 According to above macro. Gateway will publish field1=22.0&field2=49.0 to topic: dragino-1b7060/78901/data, where 78901 is the remote channel for this node ID. 127 127 128 128 129 - ==3.4 Modify the MQTT to support more options ==112 +\\ 130 130 114 + 115 +== Modify the MQTT to support more options == 116 + 131 131 The MQTT Client Utility used in Dragino is **mosquitto_pub** and **mosquitto_sub**. User can add more options to the mqtt commands. User can check the valid options by command mosquitto_pub ~-~-help. as below: 132 132 133 133 {{{root@dragino-1ec39c:~# mosquitto_pub --help ... ... @@ -254,13 +254,13 @@ 254 254 fi}}} 255 255 256 256 257 -= 4.Example to communicate to a simple MQTT server =243 += Example to communicate to a simple MQTT server = 258 258 259 -== 4.1Overview ==245 +== Overview == 260 260 261 261 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/]]. 262 262 263 -== 4.2Simulate via MQTT.fx utility ==249 +== Simulate via MQTT.fx utility == 264 264 265 265 The [[MQTT.fx>>url:http://mqttfx.jensd.de/index.php/download]] is a MQTT client tool. We can use this to simulate a MQTT connection to our MQTT broker first to make sure the MQTT broker works. This will also help us understand how it works. 266 266 ... ... @@ -283,7 +283,7 @@ 283 283 Downstream: Subscribe a topic to get downstream 284 284 285 285 286 -== 4.3Simulate via Dragino Command Line ==272 +== Simulate via Dragino Command Line == 287 287 288 288 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. 289 289 ... ... @@ -311,7 +311,7 @@ 311 311 312 312 mosquitto_sub 313 313 314 -== 4.4Configure Dragino UI for MQTT connection ==300 +== Configure Dragino UI for MQTT connection == 315 315 316 316 This chapter are step by step to show to configure the Dragino Menu for MQTT auto connection. 317 317 ... ... @@ -327,7 +327,7 @@ 327 327 328 328 forward to MQTT 329 329 330 -=== 4.4.1Configure the MQTT Client for Upstream ===316 +=== Configure the MQTT Client for Upstream === 331 331 332 332 Below screenshot is same as the publish command: 333 333 ... ... @@ -361,7 +361,7 @@ 361 361 MQTT Publish 362 362 363 363 364 -=== 4.4.2Configure the MQTT Client for Downstream ===350 +=== Configure the MQTT Client for Downstream === 365 365 366 366 Below screen shot equal to this subscribe command: 367 367 ... ... @@ -387,12 +387,13 @@ 387 387 downstream simulation 388 388 389 389 376 +\\ 390 390 391 -== 4.5Add LoRa support to communicate with remote sensor ==378 +== Add LoRa support to communicate with remote sensor == 392 392 393 393 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. 394 394 395 -=== 4.5.1Use LoRa Raw protocol for communication ~-~- For LG01/LG02 ===382 +=== Use LoRa Raw protocol for communication ~-~- For LG01/LG02 === 396 396 397 397 We can use [[LoRa Shield>>url:http://www.dragino.com/products/lora/item/102-lora-shield.html]] to send LoRa Raw data to Gateway and receive data from gateway. 398 398 ... ... @@ -422,7 +422,7 @@ 422 422 Downstream Data Flow 423 423 424 424 425 -=== 4.5.2Use LoRaWAN Protocol for communication ~-~- For LG308/LPS8/DLOS8 ===412 +=== Use LoRaWAN Protocol for communication ~-~- For LG308/LPS8/DLOS8 === 426 426 427 427 Since firmware LG02_LG08~-~-build-v5.3.1585192026-20200326-1109, Dragino LoRaWAN gateways support the communication to LoRaWAN ABP end node locally without the need of LoRaWAN server. This feature allow us to integrate MQTT in the gateway to support LoRaWAN to MQTT forwarding or visa verse. 428 428 ... ... @@ -429,8 +429,7 @@ 429 429 When use test this feature, please use the version higher then : LG02_LG08~-~-build-v5.4.1593400722-20200629-1120, in this version, the upload format is changed and readable, which is easier for integration. 430 430 431 431 432 - 433 -Video Instruction:[[https:~~/~~/youtu.be/qJTY441-t90>>url:https://youtu.be/qJTY441-t90]] 419 +\\Video Instruction:[[https:~~/~~/youtu.be/qJTY441-t90>>url:https://youtu.be/qJTY441-t90]] 434 434 435 435 436 436 Step 1: Refer [[Communicate with ABP End Node>>url:https://wiki.dragino.com/index.php/Communication_with_ABP_End_Node]] to know how to set up LG308 to work with LoRaWAN End node. ... ... @@ -486,7 +486,7 @@ 486 486 Notice: The text use for Downstream must meet the requirement from [[LG308 Downstream Payload>>url:https://wiki.dragino.com/index.php/Communication_with_ABP_End_Node#Downstream]] 487 487 488 488 489 -= 5.Example For Different MQTT Servers =475 += Example For Different MQTT Servers = 490 490 491 491 |=((( 492 492 [[~[~[image:https://wiki.dragino.com/images/thumb/7/73/ThingSpeak1.png/200px-ThingSpeak1.png~|~|alt="ThingSpeak1.png" height="98" width="200"~]~]>>url:https://wiki.dragino.com/index.php/File:ThingSpeak1.png]] ... ... @@ -511,11 +511,12 @@ 511 511 [[AWS Examples>>url:https://wiki.dragino.com/index.php/MQTT_Forward_to_Amazon_AWS-IOT]] 512 512 ))) 513 513 514 -= 6. How to Debug = 515 515 501 += How to Debug = 502 + 516 516 User can login the gateway's console and run **logread -f**. It will shows the output when there is packet arrive.User can see if it is correct. 517 517 518 -= 7.How to ask for Support =505 += How to ask for Support = 519 519 520 520 If a user still not have trouble making it works. please send a mail to support@dragino.com with the below info: 521 521