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359	359	MQTT Publish configure
360	360
361	361
362		-[[image:image-20220527135929-13.png]]
	362	+[[image:https://wiki.dragino.com/images/thumb/b/b7/MQTT_Command_10.png/600px-MQTT_Command_10.png||height="544" width="600"]]
363	363
364	364	MQTT Channel settings
365	365
366		-
367	367	(((
368	368	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:
369	369	)))
...	...	@@ -382,7 +382,7 @@
382	382	Below is a simulation to put this data to active the MQTT publish.
383	383	)))
384	384
385		-[[image:image-20220527140023-14.png]]
	384	+[[image:https://wiki.dragino.com/images/thumb/3/30/MQTT_Command_11.png/600px-MQTT_Command_11.png||height="308" width="600"]]
386	386
387	387	MQTT Publish
388	388
...	...	@@ -396,7 +396,7 @@
396	396	mosquitto_sub -h 192.168.199.148 -p 1883 -i dragino-1b7060 -t command.
397	397	)))
398	398
399		-[[image:image-20220527140100-15.png]]
	398	+[[image:https://wiki.dragino.com/images/3/36/MQTT_Command_12.png||height="173" width="579"]]
400	400
401	401	MQTT Subscribe
402	402
...	...	@@ -405,7 +405,7 @@
405	405	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:
406	406	)))
407	407
408		-[[image:image-20220527140148-16.png]]
	407	+[[image:https://wiki.dragino.com/images/thumb/b/b8/MQTT_Command_13.png/600px-MQTT_Command_13.png||height="300" width="600"]]
409	409
410	410	LoRa Broadcast parameters.
411	411
...	...	@@ -412,7 +412,7 @@
412	412
413	413	And below is the subscribe simulation:
414	414
415		-[[image:image-20220527140238-17.png]]
	414	+[[image:https://wiki.dragino.com/images/thumb/6/60/MQTT_Command_14.png/600px-MQTT_Command_14.png||height="255" width="600"]]
416	416
417	417	downstream simulation
418	418
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421	421
422	422	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.
423	423
424		-
425	425	=== 4.5.1 Use LoRa Raw protocol for communication ~-~- For LG01/LG02 ===
426	426
427	427	(((
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444	444	* Downstream: Listening broadcast message from gateway, and print it in console.
445	445	* The LoRa parameter settings in Arduino should match the LoRa settings in gateway, as below:
446	446
447		-[[image:image-20220527140354-18.png]]
	445	+[[image:https://wiki.dragino.com/images/thumb/3/3b/MQTT_Command_17.png/600px-MQTT_Command_17.png||height="197" width="600"]]
448	448
449	449	LoRa Parameter should match
450	450
...	...	@@ -451,11 +451,10 @@
451	451
452	452	Below is the test result after the Arduino Sketch is running.
453	453
454		-[[image:image-20220527140459-19.png]]
	452	+[[image:https://wiki.dragino.com/images/thumb/6/63/MQTT_Command_18.png/600px-MQTT_Command_18.png||height="319" width="600"]]
455	455
456	456	Upstream Data Flow
457	457
458		-
459	459	[[image:https://wiki.dragino.com/images/thumb/1/18/MQTT_Command_19.png/600px-MQTT_Command_19.png||height="309" width="600"]]
460	460
461	461	Downstream Data Flow

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