Changes for page MQTT Forward Instruction

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Content

...	...	@@ -1,19 +1,21 @@
1		-**~ Contents：**
	1	+**~ Table of Contents：**
2	2
3	3	{{toc/}}
4	4
5	5
6		-= 1. Introduction =
	6	+= 1.  Introduction =
7	7
	8	+
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	10
11		-== 1.1 Support Devices ==
	12	+== 1.1  Support Devices ==
12	12
	14	+
13	13	This MQTT forward instruction is for below devices:
14	14
15	15	* Firmware Version > LG02_LG08-5.3.1580178039 [[Firmware Download>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/LPS8/Firmware/Release/]]
16		-* LG01N, OLG01N ((% style="color:red" %)**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]])
	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]])
17	17	* LG02, OLG02
18	18	* LG308, DLOS8
19	19	* LPS8
...	...	@@ -20,8 +20,9 @@
20	20	* LIG16
21	21	* MS14 series if installed with the same firmware. (in this case, the MQTT forward will work , but no LoRa support)
22	22
23		-= 2. Firmware Change Log for MQTT feature =
	25	+= 2.  Firmware Change Log for MQTT feature =
24	24
	27	+
25	25	(((
26	26	This instruction is wrote start from LG02_LG08-5.3.1580178039. Below is related change log since this version of firmware.
27	27	)))
...	...	@@ -29,14 +29,16 @@
29	29	* LG02_LG08-5.3.1580178039
30	30	** Initiate version
31	31
32		-= 3. MQTT forward operating principle =
	35	+= 3.  MQTT forward operating principle =
33	33
34		-== 3.1 Network Structure ==
35	35
	38	+== 3.1  Network Structure ==
	39	+
	40	+
36	36	Below shows the network structure for MQTT forwarding.
37	37
38		-* 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.
39		-* 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,
	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,
40	40
41	41	[[image:image-20220527133547-1.png]]
42	42
...	...	@@ -43,12 +43,13 @@
43	43	General MQTT structure
44	44
45	45
46		-== 3.2 How sensor data is forwarded ==
	51	+== 3.2  How sensor data is forwarded ==
47	47
	53	+
48	48	In this MQTT forward feature, the key point is how the gateway process the sensor data.
49	49
50	50
51		-=== 3.2.1 Upstream ===
	57	+=== 3.2.1  Upstream ===
52	52
53	53	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.
54	54
...	...	@@ -60,10 +60,12 @@
60	60
61	61	(((
62	62	Upstream path
	69	+
	70	+
63	63	)))
64	64
65	65	(((
66		-Note: The sensor data can base or LoRa or other method, as long as there are data on the file /var/iot/channels. /span>
	74	+(% style="color:red" %)**Note: The sensor data can base or LoRa or other method, as long as there are data on the file /var/iot/channels. /span>**
67	67	)))
68	68
69	69	(((
...	...	@@ -70,8 +70,9 @@
70	70
71	71	)))
72	72
73		-=== 3.2.2 Downstream ===
	81	+=== 3.2.2  Downstream ===
74	74
	83	+
75	75	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.
76	76
77	77	(((
...	...	@@ -83,8 +83,9 @@
83	83	Downstream path
84	84
85	85
86		-== 3.3 Macro Definition ==
	95	+== 3.3  Macro Definition ==
87	87
	97	+
88	88	The MQTT publish command use Macro settings to generate flexible upstream payload for MQTT publish.
89	89
90	90	(((
...	...	@@ -93,8 +93,9 @@
93	93
94	94	)))
95	95
96		-=== 3.3.1 -t topic macro ===
	106	+=== 3.3.1  -t topic macro ===
97	97
	108	+
98	98	* CHANNEL: Remote Channel ID
99	99	* CLIENTID: Client ID , Same as -i
100	100	* WRITE_API: Remote Channel Write API
...	...	@@ -101,8 +101,10 @@
101	101	* USERNAME: User ID (-u)
102	102	* HOSTNAME: Device Hostname
103	103
104		-=== 3.3.2 -m message macro ===
105	105
	116	+=== 3.3.2  -m message macro ===
	117	+
	118	+
106	106	* HOSTNAME: Device Hostname
107	107	* CHANNEL: Remote Channel ID
108	108	* DATA: Sensor Data without time stamp and rssi
...	...	@@ -109,14 +109,17 @@
109	109	* META: Completely sensor data with time stamp and rssi
110	110	* JSON: Convert META to json format.
111	111
112		-=== 3.3.3 Example for Macro ===
113	113
	126	+=== 3.3.3  Example for Macro ===
	127	+
	128	+
114	114	[[image:image-20220527134251-4.png]]
115	115
116	116	MQTT Publish configure
117	117
118		-Above screen shots shows below format:
119	119
	134	+**Above screen shots shows below format:**
	135	+
120	120	* -t: CLIENTID/CHANNEL/data
121	121	* -m: DATA
122	122
...	...	@@ -126,13 +126,16 @@
126	126
127	127	Sensor Data
128	128
	145	+
129	129	(((
130	130	According to above macro. Gateway will publish (% style="color:#4f81bd" %)**field1=22.0&field2=49.0**(%%) to topic: (% style="color:#4f81bd" %)**dragino-1b7060/78901/data**(%%), where 78901 is the remote channel for this node ID.
131	131	)))
132	132
133	133
134		-== 3.4 Modify the MQTT to support more options ==
135	135
	152	+== 3.4  Modify the MQTT to support more options ==
	153	+
	154	+
136	136	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:
137	137
138	138	(% class="box" %)
...	...	@@ -150,9 +150,9 @@
150	150	[-u username [-P password]]
151	151	[~-~-will-topic [~-~-will-payload payload] [~-~-will-qos qos] [~-~-will-retain]]
152	152	[{~-~-cafile file | ~-~-capath dir} [~-~-cert file] [~-~-key file]
153		- [~-~-ciphers ciphers] [~-~-insecure]
154		- [~-~-tls-alpn protocol]
155		- [~-~-tls-engine engine] [~-~-keyform keyform] [~-~-tls-engine-kpass-sha1]]
	172	+ [~-~-ciphers ciphers] [~-~-insecure]
	173	+ [~-~-tls-alpn protocol]
	174	+ [~-~-tls-engine engine] [~-~-keyform keyform] [~-~-tls-engine-kpass-sha1]]
156	156	[~-~-psk hex-key ~-~-psk-identity identity [~-~-ciphers ciphers]]
157	157	[~-~-proxy socks-url]
158	158	[~-~-property command identifier value]
...	...	@@ -257,15 +257,19 @@
257	257	)))
258	258
259	259
260		-= 4. Example to communicate to a simple MQTT server =
261	261
262		-== 4.1 Overview ==
	280	+= 4.  Example to communicate to a simple MQTT server =
263	263
	282	+
	283	+== 4.1  Overview ==
	284	+
	285	+
264	264	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/]].
265	265
266	266
267		-== 4.2 Simulate via MQTT.fx utility ==
	289	+== 4.2  Simulate via MQTT.fx utility ==
268	268
	291	+
269	269	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.
270	270
271	271	(((
...	...	@@ -276,27 +276,30 @@
276	276
277	277	Connect to MQTT Broker
278	278
	302	+
279	279	After connected, use publish to public some thing to MQTT server. This to simulate upsteam
280	280
281		-[[image:https://wiki.dragino.com/images/thumb/b/bd/MQTT_Forward_5.png/600px-MQTT_Forward_5.png||height="149" width="600"]]
	305	+[[image:image-20220527135037-7.png]]
282	282
283	283	Upstream: Publish message to MQTT Broker
284	284
	309	+
285	285	To simulate a downstream, use MQTT.fx to subscribe a topic, and publish something to this topic. as Below:
286	286
287		-[[image:https://wiki.dragino.com/images/thumb/3/3d/MQTT_Forward_6.png/600px-MQTT_Forward_6.png||height="279" width="600"]]
	312	+[[image:image-20220527135215-8.png]]
288	288
289	289	Downstream: Subscribe a topic to get downstream
290	290
291	291
292		-== 4.3 Simulate via Dragino Command Line ==
293	293
	318	+== 4.3  Simulate via Dragino Command Line ==
	319	+
294	294	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.
295	295
296	296	In the Dragino Gateway, we use [[mosquitto client>>url:https://mosquitto.org/]] for MQTT connection.
297	297
298	298
299		-(% class="mark" %)**For Upstream**
	325	+(% style="color:blue" %)**For Upstream**
300	300
301	301	command is [[mosquitto_pub>>url:https://mosquitto.org/man/mosquitto_pub-1.html]]
302	302
...	...	@@ -304,63 +304,70 @@
304	304
305	305	Note: 192.168.199.148 is MQTT broker address, the gateway and the MQTT broker PC are in the same network.
306	306
307		-[[image:https://wiki.dragino.com/images/thumb/d/d0/MQTT_Command_6.png/600px-MQTT_Command_6.png||height="188" width="600"]]
	333	+[[image:image-20220527135310-9.png]]
308	308
309	309	mosquitto_pub
310	310
311	311
312		-(% class="mark" %)**For Downstream**
313	313
	339	+(% style="color:blue" %)**For Downstream**
	340	+
314	314	Use [[mosquitto_sub>>url:https://mosquitto.org/man/mosquitto_sub-1.html]] to subscribe the change on the topic.
315	315
316		-[[image:https://wiki.dragino.com/images/thumb/8/89/MQTT_Command_7.png/600px-MQTT_Command_7.png||height="267" width="600"]]
	343	+[[image:image-20220527135440-10.png]]
317	317
318	318	mosquitto_sub
319	319
320	320
321		-== 4.4 Configure Dragino UI for MQTT connection ==
	348	+== 4.4  Configure Dragino UI for MQTT connection ==
322	322
323	323	This chapter are step by step to show to configure the Dragino Menu for MQTT auto connection.
324	324
325	325	(((
326		-Go to (% class="mark" %)**Dragino Menu ~-~-> MQTT Client**
	353	+Go to (% style="color:#4f81bd" %)**Dragino Menu ~-~-> MQTT Client**
327	327	)))
328	328
329		-[[image:https://wiki.dragino.com/images/thumb/b/bc/MQTT_Command_8.png/600px-MQTT_Command_8.png||height="249" width="600"]]
	356	+[[image:image-20220714155901-1.png]]
330	330
331	331	go to mqtt configure menu
332	332
	360	+
333	333	(((
334		-Select **Forward to MQTT server**. (% class="mark" %)**Notice**(%%): This option is removed from the latest firmware, in the latest firmware, if user submit "SAVE & APPLY" in MQTT page, the gateway will use MQTT service.
	362	+Select (% style="color:#4f81bd" %)**Forward to MQTT server**. (% style="color:red" %)**Notice**(%%): This option is removed from the latest firmware, in the latest firmware, if user submit "SAVE & APPLY" in MQTT page, the gateway will use MQTT service.
335	335	)))
336	336
337		-[[image:https://wiki.dragino.com/images/thumb/1/14/MQTT_Commands_8.png/600px-MQTT_Commands_8.png||height="240" width="600"]]
	365	+[[image:image-20220527135742-11.png]]
338	338
339	339	forward to MQTT
340	340
341	341
342		-=== 4.4.1 Configure the MQTT Client for Upstream ===
343	343
344		-Below screenshot is same as the publish command:
	371	+=== 4.4.1  Configure the MQTT Client for Upstream ===
345	345
	373	+
	374	+**Below screenshot is same as the publish command:**
	375	+
346	346	(% class="box" %)
347	347	(((
348		-mosquitto_pub -h 192.168.199.148 -p 1883 -i dragino-1b7060 -t CLIENTID/CHANNEL/data -m DATA
	378	+**mosquitto_pub -h 192.168.199.148 -p 1883 -i dragino-1b7060 -t CLIENTID/CHANNEL/data -m DATA
349	349	~/~/where the CLIENTID, CHANNEL & DATA are macro. represent for
350	350	~/~/CLIENTID: dragino-1b7060
351	351	~/~/CHANNEL: Remote ID in Channel settings; here is 78901 or 567456
352		-~/~/DATA: The data stores in /var/iot/channels/
	382	+~/~/DATA: The data stores in /var/iot/channels/**
353	353	)))
354	354
355		-[[image:https://wiki.dragino.com/images/thumb/c/c7/MQTT_Command_9.png/600px-MQTT_Command_9.png||height="385" width="600"]]
356	356
	386	+[[image:image-20220527135828-12.png]]
	387	+
357	357	MQTT Publish configure
358	358
359	359
360		-[[image:https://wiki.dragino.com/images/thumb/b/b7/MQTT_Command_10.png/600px-MQTT_Command_10.png||height="544" width="600"]]
361	361
	392	+[[image:image-20220527135929-13.png]]
	393	+
362	362	MQTT Channel settings
363	363
	396	+
364	364	(((
365	365	For example, if we put a data(temp=46) on the file /var/iot/channels/4567, because 4567 match the remote channel 78901. the gateway will run this command:
366	366	)))
...	...	@@ -379,13 +379,15 @@
379	379	Below is a simulation to put this data to active the MQTT publish.
380	380	)))
381	381
382		-[[image:https://wiki.dragino.com/images/thumb/3/30/MQTT_Command_11.png/600px-MQTT_Command_11.png||height="308" width="600"]]
	415	+[[image:image-20220527140023-14.png]]
383	383
384	384	MQTT Publish
385	385
386	386
387		-=== 4.4.2 Configure the MQTT Client for Downstream ===
388	388
	421	+=== 4.4.2  Configure the MQTT Client for Downstream ===
	422	+
	423	+
389	389	Below screen shot equal to this subscribe command:
390	390
391	391	(% class="box" %)
...	...	@@ -393,7 +393,7 @@
393	393	mosquitto_sub -h 192.168.199.148 -p 1883 -i dragino-1b7060 -t command.
394	394	)))
395	395
396		-[[image:https://wiki.dragino.com/images/3/36/MQTT_Command_12.png||height="173" width="579"]]
	431	+[[image:image-20220527140100-15.png]]
397	397
398	398	MQTT Subscribe
399	399
...	...	@@ -402,7 +402,7 @@
402	402	When MQTT broker receive a update on this topic, the gateway will get the update and use LoRa radio to broadcast this message. The LoRa parameters used for update is:
403	403	)))
404	404
405		-[[image:https://wiki.dragino.com/images/thumb/b/b8/MQTT_Command_13.png/600px-MQTT_Command_13.png||height="300" width="600"]]
	440	+[[image:image-20220527140148-16.png]]
406	406
407	407	LoRa Broadcast parameters.
408	408
...	...	@@ -409,17 +409,20 @@
409	409
410	410	And below is the subscribe simulation:
411	411
412		-[[image:https://wiki.dragino.com/images/thumb/6/60/MQTT_Command_14.png/600px-MQTT_Command_14.png||height="255" width="600"]]
	447	+[[image:image-20220527140238-17.png]]
413	413
414	414	downstream simulation
415	415
416	416
417		-== 4.5 Add LoRa support to communicate with remote sensor ==
	452	+== 4.5  Add LoRa support to communicate with remote sensor ==
418	418
	454	+
419	419	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.
420	420
421		-=== 4.5.1 Use LoRa Raw protocol for communication ~-~- For LG01/LG02 ===
422	422
	458	+=== 4.5.1  Use LoRa Raw protocol for communication ~-~- For LG01/LG02 ===
	459	+
	460	+
423	423	(((
424	424	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.
425	425	)))
...	...	@@ -430,6 +430,8 @@
430	430
431	431	(((
432	432	And this link is the required library: [[arduino-LoRa-master>>url:http://www.dragino.com/downloads/index.php?dir=LoraShield/]]. Unzip this library and put in Arduino library location.
	471	+
	472	+
433	433	)))
434	434
435	435	(((
...	...	@@ -440,42 +440,49 @@
440	440	* Downstream: Listening broadcast message from gateway, and print it in console.
441	441	* The LoRa parameter settings in Arduino should match the LoRa settings in gateway, as below:
442	442
443		-[[image:https://wiki.dragino.com/images/thumb/3/3b/MQTT_Command_17.png/600px-MQTT_Command_17.png||height="197" width="600"]]
	483	+[[image:image-20220527140354-18.png]]
444	444
445	445	LoRa Parameter should match
446	446
447	447
	488	+
448	448	Below is the test result after the Arduino Sketch is running.
449	449
450		-[[image:https://wiki.dragino.com/images/thumb/6/63/MQTT_Command_18.png/600px-MQTT_Command_18.png||height="319" width="600"]]
	491	+[[image:image-20220527140459-19.png]]
451	451
452	452	Upstream Data Flow
453	453
454		-[[image:https://wiki.dragino.com/images/thumb/1/18/MQTT_Command_19.png/600px-MQTT_Command_19.png||height="309" width="600"]]
455	455
	496	+
	497	+[[image:image-20220527140542-20.png]]
	498	+
456	456	Downstream Data Flow
457	457
458	458
459		-=== 4.5.2 Use LoRaWAN Protocol for communication ~-~- For LG308/LPS8/DLOS8 ===
460	460
	503	+=== 4.5.2  Use LoRaWAN Protocol for communication ~-~- For LG308/LPS8/DLOS8 ===
	504	+
	505	+
461	461	(((
462		-Since firmware (% class="mark" %)**LG02_LG08~-~-build-v5.3.1585192026-20200326-1109,**(%%) Dragino LoRaWAN gateways support the communication to LoRaWAN (% class="mark" %)**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.
	507	+Since firmware (% style="color:#4f81bd" %)**LG02_LG08~-~-build-v5.3.1585192026-20200326-1109,**(%%) Dragino LoRaWAN gateways support the communication to LoRaWAN (% style="color:#4f81bd" %)**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.
463	463	)))
464	464
465	465	(((
466		-When use test this feature, please use the version higher then : (% class="mark" %)**LG02_LG08~-~-build-v5.4.1593400722-20200629-1120**(%%), in this version, the upload format is changed and readable, which is easier for integration.
467		-(% class="mark" %)**Video Instruction**(%%):[[https:~~/~~/youtu.be/qJTY441-t90>>url:https://youtu.be/qJTY441-t90]]
	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	+
	513	+
	514	+(% style="color:#4f81bd" %)**Video Instruction**(%%): (% style="color:blue" %)[[https:~~/~~/youtu.be/qJTY441-t90>>url:https://youtu.be/qJTY441-t90]]
468	468	)))
469	469
470	470	(((
471		-**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.
	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.
472	472	)))
473	473
474	474	(((
475		-**Step 2**: Make sure your Radio settings match the End Node settings.
	522	+(% style="color:blue" %)**Step 2**(%%): Make sure your Radio settings match the End Node settings.
476	476	)))
477	477
478		-[[image:https://wiki.dragino.com/images/thumb/f/f7/LG308_MQTT_5.png/600px-LG308_MQTT_5.png||height="387" width="600"]]
	525	+[[image:image-20220527141235-21.png]]
479	479
480	480	Use Same Frequency Band as End Node
481	481
...	...	@@ -482,86 +482,89 @@
482	482
483	483	(((
484	484	(((
485		-**Step 3**: Set up publish format and MQTT channel. The LG308 will store the Data from End node in HEX format in the file. And we need to config the format to META
	532	+(% style="color:blue" %)**Step 3**(%%): Set up publish format and MQTT channel. The LG308 will store the Data from End node in (% style="color:#4f81bd" %)**HEX format**(%%) in the file.
486	486	)))
487	487	)))
488	488
489		-[[image:https://wiki.dragino.com/images/thumb/8/8d/LG308_MQTT_3.png/600px-LG308_MQTT_3.png||height="385" width="600"]]
	536	+[[image:image-20220613191345-4.png]]
490	490
491		-Publish mush use META as data format for LG308
492	492
493	493
494		-**Step 4**: Map the Device Address to Remote ID in MQTT server.
	540	+(% style="color:blue" %)**Step 4**(%%): Map the Device Address to Remote ID in MQTT server.
495	495
496		-[[image:https://wiki.dragino.com/images/thumb/7/7f/LG308_MQTT_4.png/600px-LG308_MQTT_4.png||height="335" width="600"]]
	542	+[[image:image-20220613190635-2.png]]
497	497
498		-Map Dev Addr to remote ID
499	499
500	500
501		-**Step 5: Upstream**: Save the change, we can see the log info via "sytem log", End Node and MQTT Server
	546	+(% style="color:blue" %)**Step 5: Upstream**(%%): Save the change, we can see the log info via "sytem log", End Node and MQTT Server
502	502
503		-[[image:https://wiki.dragino.com/images/thumb/b/be/LG308_MQTT_6.png/600px-LG308_MQTT_6.png||height="279" width="600"]]
	548	+[[image:image-20220527141843-24.png]]
504	504
505		-Upstream Process
506	506
507		-[[image:https://wiki.dragino.com/images/thumb/0/07/LG308_MQTT_6_1.png/600px-LG308_MQTT_6_1.png||height="246" width="600"]]
508	508
	552	+
	553	+[[image:image-20220527141933-25.png]]
	554	+
509	509	Choose ASCII Format
510	510
511		-[[image:https://wiki.dragino.com/images/thumb/a/a3/LG308_MQTT_6_2.png/600px-LG308_MQTT_6_2.png||height="248" width="600"]]
512	512
	558	+
	559	+[[image:image-20220527142028-26.png]]
	560	+
513	513	LHT65 Decoder
514	514
515	515
516		-**Step 6: Set up subscribe:** Subscribe a topci for downstream.
517	517
518		-[[image:https://wiki.dragino.com/images/thumb/b/b9/LG308_MQTT_7.png/600px-LG308_MQTT_7.png||height="176" width="600"]]
	565	+(% style="color:blue" %)**Step 6: Set up subscribe**(%%)**:** Subscribe a topci for downstream.
519	519
520		-Subscribe to a topic
	567	+[[image:image-20220613191426-5.png]]
521	521
522	522
523		-**Step 7**: Downstream: Save the change, we can see the log info via "sytem log", End Node and MQTT Server.
524	524
525		-[[image:https://wiki.dragino.com/images/thumb/9/97/LG308_MQTT_8.png/600px-LG308_MQTT_8.png||height="298" width="600"]]
	571	+(% style="color:blue" %)**Step 7: Downstream**(%%): Save the change, we can see the log info via "sytem log", End Node and MQTT Server.
526	526
527		-Downstream Flow
	573	+[[image:image-20220527142239-28.png]]
528	528
529		-(% class="mark" %)**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]]**
530	530
531	531
532		-= 5. Example For Different MQTT Servers =
	577	+=== 4.5.3 MQTT Downstream format ===
533	533
534		-(% style="width:731.222px" %)
535		-|=(% style="width: 270px;" %)(((
536		-[[image:https://wiki.dragino.com/images/thumb/7/73/ThingSpeak1.png/200px-ThingSpeak1.png||alt="ThingSpeak1.png" height="114" width="233"]]
537	537
538		-== [[ThingSpeak Server>>url:http://www.thingspeak.com/]] ==
	580	+mosquitto_pub -h $server_address -p $server_port -t $Client_ID -m "**dev_addr,imme/time,txt/hex,payload**"
539	539
	582	+(% class="box infomessage" %)
	583	+(((
	584	+**mosquitto_pub -h 10.130.2.192 -p 1883 -t dragino-1d25dc/ -m "260211D,time,txt,hello"**
	585	+)))
540	540
541		-[[Examples>>url:https://wiki.dragino.com/index.php/ThingSpeak_Examples]]
542		-)))|=(% style="width: 242px;" %)(((
543		-[[image:https://wiki.dragino.com/images/thumb/3/3b/Lewei50.png/200px-Lewei50.png||alt="Lewei50.png" height="65" width="223"]]
	587	+mosquitto_pub -h $server_address -p $server_port -t $Client_ID -m "**dev_addr,imme/time,txt/hex,payload,txpw,txbw,SF,frequency,rxwindow**"
544	544
	589	+(% class="box infomessage" %)
	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"**
	592	+)))
545	545
546		-== [[乐联网平台>>url:https://www.lewei50.com/]] ==
	594	+Or use [[MQTT.fx>>https://mqttfx.jensd.de/index.php/download]]
547	547
	596	+[[image:image-20220613192816-6.png||height="440" width="1056"]]
548	548
549		-[[lewei Example>>url:https://wiki.dragino.com/index.php/Lewei_Example_mqtt]]
550		-)))|=(% style="width: 214px;" %)(((
551		-[[image:https://wiki.dragino.com/images/thumb/a/aa/AWS-IOT.png/200px-AWS-IOT.png||alt="AWS-IOT.png" height="112" width="183"]]
552	552
553		-== [[AWS-IOT>>url:https://aws.amazon.com/cn/iot-platform/how-it-works/]] ==
	599	+(% style="color:red" %)**Notice: The text use for Downstream must meet the requirement from [[LG308 Downstream Payload>>Communicate with ABP End Node without LoRaWAN Network Server --- LG308||anchor="H2.2Downstream"]]**
554	554
555	555
556		-[[AWS Examples>>url:https://wiki.dragino.com/index.php/MQTT_Forward_to_Amazon_AWS-IOT]]
557		-)))
	602	+Check out this link for more mosquito-related directives [[https:~~/~~/mosquitto.org/man/mosquitto_pub-1.html>>https://mosquitto.org/man/mosquitto_pub-1.html]]
558	558
559		-= 6. How to Debug =
560	560
561		-User can login the gateway's console and run (% class="mark" %)**logread -f**(%%). It will shows the output when there is packet arrive.User can see if it is correct.
562	562
563		-= 7. How to ask for Support =
	606	+= 5.  How to Debug =
564	564
	608	+
	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	+
	611	+
	612	+= 6.  How to ask for Support =
	613	+
	614	+
565	565	If a user still not have trouble making it works. please send a mail to support@dragino.com with the below info:
566	566
567	567	* Detail of your LoRaWAN end node.

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