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7	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	+
10	10	== 1.1 Support Devices ==
11	11
12	12	This MQTT forward instruction is for below devices:
...	...	@@ -37,7 +37,7 @@
37	37	* 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.
38	38	* 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,
39	39
40		-[[image:https://wiki.dragino.com/images/thumb/4/45/MQTT_Forward_1.png/600px-MQTT_Forward_1.png||height="348" width="600"]]
	41	+[[image:image-20220527133547-1.png]]
41	41
42	42	General MQTT structure
43	43
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55	55	The data flow works as below diagram.
56	56	)))
57	57
58		-[[~[~[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]]
	59	+[[image:image-20220527134000-2.png]]
59	59
60	60	(((
61	61	Upstream path
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77	77	Below are the data flow for downstream.
78	78	)))
79	79
80		-[[image:https://wiki.dragino.com/images/thumb/3/3a/MQTT_Forward_3.png/600px-MQTT_Forward_3.png||height="368" width="600"]]
	81	+[[image:image-20220527134038-3.png]]
81	81
82	82	Downstream path
83	83
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87	87	The MQTT publish command use Macro settings to generate flexible upstream payload for MQTT publish.
88	88
89	89	(((
90		-Currently the (% class="mark" %)**-t (topic)**(%%) and (% class="mark" %)**-m (message)**(%%) support Macros.
	91	+Currently the (% style="color:#4f81bd" %)**-t (topic)**(%%) and (% style="color:#4f81bd" %)**-m (message)**(%%) support Macros.
	92	+
	93	+
91	91	)))
92	92
93	93	=== 3.3.1 -t topic macro ===
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98	98	* USERNAME: User ID (-u)
99	99	* HOSTNAME: Device Hostname
100	100
	104	+
101	101	=== 3.3.2 -m message macro ===
102	102
103	103	* HOSTNAME: Device Hostname
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106	106	* META: Completely sensor data with time stamp and rssi
107	107	* JSON: Convert META to json format.
108	108
	113	+
109	109	=== 3.3.3 Example for Macro ===
110	110
111		-[[image:https://wiki.dragino.com/images/thumb/c/c7/MQTT_Command_9.png/600px-MQTT_Command_9.png||height="385" width="600"]]
	116	+[[image:image-20220527134251-4.png]]
112	112
113	113	MQTT Publish configure
114	114
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119	119
120	120	When there is a LoRa sensor arrive. it will be store at the /var/iot/channels as below:
121	121
122		-[[image:https://wiki.dragino.com/images/thumb/c/c4/MQTT_Command_20.png/600px-MQTT_Command_20.png||height="325" width="600"]]
	127	+[[image:image-20220527134332-5.png]]
123	123
124	124	Sensor Data
125	125
126	126	(((
127		-According to above macro. Gateway will publish (% class="mark" %)**field1=22.0&field2=49.0**(%%) to topic: (% class="mark" %)**dragino-1b7060/78901/data**(%%), where 78901 is the remote channel for this node ID.
	132	+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.
128	128	)))
129	129
130	130

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