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89	89
90	90	(((
91	91	Currently the (% style="color:#4f81bd" %)**-t (topic)**(%%) and (% style="color:#4f81bd" %)**-m (message)**(%%) support Macros.
92		-
93		-
94	94	)))
95	95
96	96	=== 3.3.1 -t topic macro ===
...	...	@@ -111,7 +111,7 @@
111	111
112	112	=== 3.3.3 Example for Macro ===
113	113
114		-[[image:image-20220527134251-4.png]]
	112	+[[image:https://wiki.dragino.com/images/thumb/c/c7/MQTT_Command_9.png/600px-MQTT_Command_9.png||height="385" width="600"]]
115	115
116	116	MQTT Publish configure
117	117
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122	122
123	123	When there is a LoRa sensor arrive. it will be store at the /var/iot/channels as below:
124	124
125		-[[image:image-20220527134332-5.png]]
	123	+[[image:https://wiki.dragino.com/images/thumb/c/c4/MQTT_Command_20.png/600px-MQTT_Command_20.png||height="325" width="600"]]
126	126
127	127	Sensor Data
128	128
129	129	(((
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.
	128	+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.
131	131	)))
132	132
133	133
...	...	@@ -186,7 +186,7 @@
186	186	~-~-help : display this message.
187	187	~-~-repeat : if publish mode is -f, -m, or -s, then repeat the publish N times.
188	188	~-~-repeat-delay : if using ~-~-repeat, wait time seconds between publishes. Defaults to 0.
189		-~-~-quiet : (% style="color:red" %)don't print error messages.
	187	+~-~-quiet : (% class="mark" %)don't print error messages.
190	190	~-~-will-payload : payload for the client Will, which is sent by the broker in case of
191	191	unexpected disconnection. If not given and will-topic is set, a zero
192	192	length message will be sent.
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224	224
225	225	(% class="box" %)
226	226	(((
227		-//# Call MQTT Publish command
	225	+# Call MQTT Publish command
228	228	\\# 1. Case with User, Password and Client ID present  (e.g. Azure)
229	229	if [ ! -z "$pass" ] && [ ! -z "$user" ] && [ ! -z "$clientID" ]; then
230	230	case="1"
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251	251	mosquitto_pub $D -h $server -p $port -q $pub_qos  -t $pub_topic -u $user -P "$pass" $PUB_FLAG "$mqtt_data"
252	252	\\# 0. Else - invalid parameters, just log
253	253	else
254		-case="(% style="color:red" %)Invalid parameters" (%%)
255		-logger (% style="color:red" %)"[IoT.MQTT]:Invalid Parameters - mosquitto_pub not called."(%%)
256		-fi//
	252	+case="Invalid parameters"
	253	+logger "[IoT.MQTT]:Invalid Parameters - mosquitto_pub not called."
	254	+fi
257	257	)))
258	258
259	259
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263	263
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		-
267	267	== 4.2 Simulate via MQTT.fx utility ==
268	268
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.
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272	272	In this test, the MQTT broker and MQTT.fx are installed in the same PC, so the MQTT server address in MQTT.fx should be localhost. Below shows how to connect to the server.
273	273	)))
274	274
275		-[[image:image-20220527134929-6.png]]
	272	+[[image:https://wiki.dragino.com/images/thumb/0/06/MQTT_Forward_4.png/600px-MQTT_Forward_4.png||height="201" width="600"]]
276	276
277	277	Connect to MQTT Broker
278	278

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