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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	+
92	92	)))
93	93
94	94	=== 3.3.1 -t topic macro ===
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109	109
110	110	=== 3.3.3 Example for Macro ===
111	111
112		-[[image:https://wiki.dragino.com/images/thumb/c/c7/MQTT_Command_9.png/600px-MQTT_Command_9.png||height="385" width="600"]]
	114	+[[image:image-20220527134251-4.png]]
113	113
114	114	MQTT Publish configure
115	115
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120	120
121	121	When there is a LoRa sensor arrive. it will be store at the /var/iot/channels as below:
122	122
123		-[[image:https://wiki.dragino.com/images/thumb/c/c4/MQTT_Command_20.png/600px-MQTT_Command_20.png||height="325" width="600"]]
	125	+[[image:image-20220527134332-5.png]]
124	124
125	125	Sensor Data
126	126
127	127	(((
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.
	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.
129	129	)))
130	130
131	131
...	...	@@ -184,7 +184,7 @@
184	184	~-~-help : display this message.
185	185	~-~-repeat : if publish mode is -f, -m, or -s, then repeat the publish N times.
186	186	~-~-repeat-delay : if using ~-~-repeat, wait time seconds between publishes. Defaults to 0.
187		-~-~-quiet : (% class="mark" %)don't print error messages.
	189	+~-~-quiet : (% style="color:red" %)don't print error messages.
188	188	~-~-will-payload : payload for the client Will, which is sent by the broker in case of
189	189	unexpected disconnection. If not given and will-topic is set, a zero
190	190	length message will be sent.
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222	222
223	223	(% class="box" %)
224	224	(((
225		-# Call MQTT Publish command
	227	+//# Call MQTT Publish command
226	226	\\# 1. Case with User, Password and Client ID present  (e.g. Azure)
227	227	if [ ! -z "$pass" ] && [ ! -z "$user" ] && [ ! -z "$clientID" ]; then
228	228	case="1"
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249	249	mosquitto_pub $D -h $server -p $port -q $pub_qos  -t $pub_topic -u $user -P "$pass" $PUB_FLAG "$mqtt_data"
250	250	\\# 0. Else - invalid parameters, just log
251	251	else
252		-case="Invalid parameters"
253		-logger "[IoT.MQTT]:Invalid Parameters - mosquitto_pub not called."
254		-fi
	254	+case="(% style="color:red" %)Invalid parameters" (%%)
	255	+logger (% style="color:red" %)"[IoT.MQTT]:Invalid Parameters - mosquitto_pub not called."(%%)
	256	+fi//
255	255	)))
256	256
257	257
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261	261
262	262	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/]].
263	263
	266	+
264	264	== 4.2 Simulate via MQTT.fx utility ==
265	265
266	266	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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269	269	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.
270	270	)))
271	271
272		-[[image:https://wiki.dragino.com/images/thumb/0/06/MQTT_Forward_4.png/600px-MQTT_Forward_4.png||height="201" width="600"]]
	275	+[[image:image-20220527134929-6.png]]
273	273
274	274	Connect to MQTT Broker
275	275

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