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Last modified by Xiaoling on 2022/09/02 18:11
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edited by Xiaoling
on 2022/05/31 14:05
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To version 44.1
edited by Xiaoling
on 2022/05/31 14:30
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23 23  
24 24  = 3. What does this example shows? How it works? =
25 25  
26 +(((
26 26  The server we use here is ThingSpeak which has an intuitive chart to show the test result for our test.The ThingSpeak IoT service now supports MQTT subscriptions to receive instant updates when [[ThingSpeak>>url:https://thingspeak.com/]] channel gets updated. The method here is general and can be used with other IoT servers for MQTT connection as well.
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27 27  
28 28  [[image:image-20220531135402-1.png]]
29 29  
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37 37  
38 38  [[image:image-20220531135521-3.png]]
39 39  
42 +(((
40 40  Schematic diagram: uplink.In this section, we will try to program LG01 to uplink data to ThingSpeak. The data flow in this example.We have already tried ① and ② in the above simple LoRa example. Now we will try the step ③ first, after it work as expect, we will integrate these three steps together for a complete uplink example.
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41 41  
42 42  
43 43  
44 44  [[image:image-20220531135607-4.png]]
45 45  
50 +(((
46 46  Schematic diagram:downlink.In this section, we will try to program LG01 to fetch download data from ThingSpeak, then broadcast this data to local LoRa network. The end node will get this message and check if they need to do something. Similar with Uplink Example, we will first try to do it in PC, then do it in Linux side, and finally integrate it with LoRa.
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47 47  
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48 48  MQTT agreement to achieve the need: client and server There are three identities in the MQTT protocol: Publish, Broker (server), Subscribe. Among them, the publisher and the subscriber of the message are all clients, the broker is the server, and the publisher can be both the subscriber and the subscriber. MQTT transmission of information is divided into: Topic and payload in two parts Topic, can be understood as the type of message subscribers Subscribe, you will receive the theme of the message content (payload) The payload, which can be understood as the content of the message, refers to the specific content to be used by the subscribers.
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49 49  
58 +(((
50 50  To use the server, we need to register an account on [[ThingSpeak>>url:https://thingspeak.com/]] . Then create a channel and type the channel info. As shown below, the Channel ID is the unique ID to store our data in [[ThingSpeak>>url:https://thingspeak.com/]] .
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51 51  
52 52  
53 53  = 4. Preparation =
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105 105  
106 106  [[image:image-20220531140248-11.png]]
107 107  
108 -Overview
118 +**Overview**
109 109  
110 110  
111 111  
112 112  [[image:image-20220531140425-14.png]]
113 113  
114 -Senosor->IOT Server
124 +**Senosor->IOT Server**
115 115  
116 116  
117 117  [[image:image-20220531140458-15.png]]
118 118  
119 -MQTT->Configure MQTT Server
129 +**MQTT->Configure MQTT Server**
120 120  
121 121  
122 122  
123 -[[~[~[image:https://wiki.dragino.com/images/thumb/6/6a/MQTT_LG01_Configure_3.png/400px-MQTT_LG01_Configure_3.png~|~|height="91" width="400"~]~]>>url:https://wiki.dragino.com/index.php/File:MQTT_LG01_Configure_3.png]]
133 +[[image:image-20220531140538-16.png]]
124 124  
125 -MQTT->MQTT Channel
135 +**MQTT->MQTT Channel**
126 126  
127 -[[~[~[image:https://wiki.dragino.com/images/thumb/3/36/MQTT_LG01_Configure_4.png/400px-MQTT_LG01_Configure_4.png~|~|height="257" width="400"~]~]>>url:https://wiki.dragino.com/index.php/File:MQTT_LG01_Configure_4.png]]
128 128  
129 -Sensor->LoRa/LoraWAN
130 130  
131 -[[~[~[image:https://wiki.dragino.com/images/thumb/6/61/MQTT_LG01_Configure_5.png/400px-MQTT_LG01_Configure_5.png~|~|height="230" width="400"~]~]>>url:https://wiki.dragino.com/index.php/File:MQTT_LG01_Configure_5.png]]
139 +[[image:image-20220531140611-17.png]]
132 132  
133 -Configure network access.Network->Internet Access
141 +**Sensor->LoRa/LoraWAN**
134 134  
135 135  
144 +
145 +[[image:image-20220531140651-18.png]]
146 +
147 +Configure network access.**Network->Internet Access**
148 +
149 +
136 136  == 4.6 Try MQTT API call with LG01 Linux command ==
137 137  
138 138  === 4.6.1 Input the command at the console ===
139 139  
140 -1. [[~[~[image:https://wiki.dragino.com/images/8/84/3_1.png~|~|height="99" width="93"~]~]>>url:https://wiki.dragino.com/index.php/File:3_1.png]](((
154 +1. [[image:image-20220531140811-19.png]](((
141 141  Open this Application.
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142 142  )))
143 -1. [[~[~[image:https://wiki.dragino.com/images/thumb/d/d7/3_2.png/400px-3_2.png~|~|height="230" width="400"~]~]>>url:https://wiki.dragino.com/index.php/File:3_2.png]](((
159 +1. [[image:image-20220531140842-20.png]](((
144 144  Input passward(dragino).After into the console.
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145 145  )))
146 -1. [[~[~[image:https://wiki.dragino.com/images/thumb/5/5d/3_5.png/400px-3_5.png~|~|height="310" width="400"~]~]>>url:https://wiki.dragino.com/index.php/File:3_5.png]](((
164 +1. [[image:image-20220531140915-21.png]](((
147 147  First, we need to make sure the LG01 has internet access. We can log in the SSH and ping an Internet address and see if it get through. As below
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148 148  )))
149 -1. [[~[~[image:https://wiki.dragino.com/images/thumb/6/63/3_3.png/400px-3_3.png~|~|height="213" width="400"~]~]>>url:https://wiki.dragino.com/index.php/File:3_3.png]](((
169 +1. [[image:image-20220531140955-22.png]](((
150 150  LG01 has built-in Linux tool mosquitto. It is a very powerful tool for http communication. We can use this tool to handle MQTT API call in LG01. Input this command and replace your keys.
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151 151  )))
152 -1. [[~[~[image:https://wiki.dragino.com/images/thumb/3/35/3_4.png/500px-3_4.png~|~|height="180" width="500"~]~]>>url:https://wiki.dragino.com/index.php/File:3_4.png]](((
175 +1. [[image:image-20220531141026-23.png]](((
153 153  Go to Server check out result.We success to use LG01 to uplink data to ThingSpeak,the mosquitto_pub command is executed in the Linux side, finally, we will have to call mosquitto_pub command with sensor data variable in Arduino side. This is through the process class in Arduino and we will show it in the final sketch.
154 154  )))
155 155  
156 156  * This command:
157 157  
158 -{{{mosquitto_pub -h mqtt.thingspeak.com -p 1883 -u dragino -P UZ4NGHKJMKS9WR5E -i dragino_Client -t channels/399171/publish/A4NNF6G8G63JOIUV -m "field1=23.5&field2=57.5&status=MQTTPUBLISH"
159 -}}}
181 +(% class="box infomessage" %)
182 +(((
183 +**mosquitto_pub -h mqtt.thingspeak.com -p 1883 -u dragino -P UZ4NGHKJMKS9WR5E  -i dragino_Client -t channels/399171/publish/A4NNF6G8G63JOIUV -m "field1=23.5&field2=57.5&status=MQTTPUBLISH"**
184 +)))
160 160  
161 161  * Need replace:
162 162  
163 -{{{UZ4NGHKJMKS9WR5E //MQTT API
164 -399171 //Channel ID
165 -A4NNF6G8G63JOIUV //Write API Key
166 -}}}
188 +(% class="box infomessage" %)
189 +(((
190 +**UZ4NGHKJMKS9WR5E  ~/~/MQTT API
191 +399171            ~/~/Channel ID
192 +A4NNF6G8G63JOIUV  ~/~/Write API Key**
193 +)))
167 167  
168 168  
169 169  === 4.6.2 Input the command at the console(LG01 new version:4.3.4) ===
170 170  
171 -1. [[~[~[image:https://wiki.dragino.com/images/8/84/3_1.png~|~|height="99" width="93"~]~]>>url:https://wiki.dragino.com/index.php/File:3_1.png]](((
198 +1. [[image:image-20220531141150-24.png]](((
172 172  Open this Application.
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201 +
202 +
173 173  )))
174 -1. [[~[~[image:https://wiki.dragino.com/images/thumb/6/6e/MQTT_Command_2.png/400px-MQTT_Command_2.png~|~|height="76" width="400"~]~]>>url:https://wiki.dragino.com/index.php/File:MQTT_Command_2.png]](((
204 +1. (((
205 +[[image:image-20220531141400-27.png]]
206 +
175 175  Check the settings.
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176 176  )))
177 -1. [[~[~[image:https://wiki.dragino.com/images/thumb/8/8d/MQTT_Command_1.png/400px-MQTT_Command_1.png~|~|height="343" width="400"~]~]>>url:https://wiki.dragino.com/index.php/File:MQTT_Command_1.png]](((
212 +1. (((
213 +[[image:image-20220531141601-30.png]]
214 +
178 178  input this command.
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179 179  )))
180 -1. [[~[~[image:https://wiki.dragino.com/images/thumb/d/de/MQTT_Command_3.png/400px-MQTT_Command_3.png~|~|height="207" width="400"~]~]>>url:https://wiki.dragino.com/index.php/File:MQTT_Command_3.png]](((
220 +1. [[image:image-20220531141515-29.png]](((
181 181  Check the result.
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182 182  )))
183 183  
184 184  == 4.7 Updata data to Server(Through MQTT) ==
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191 191  1. Sketch will write active content to /tmp/iot/status periodically (every 5 minutes).(Watchdog feature)
192 192  
193 193  
194 -1. [[~[~[image:https://wiki.dragino.com/images/thumb/8/82/MQTT_Sketch_2.png/400px-MQTT_Sketch_2.png~|~|height="233" width="400"~]~]>>url:https://wiki.dragino.com/index.php/File:MQTT_Sketch_2.png]](((
237 +1. [[image:image-20220531141656-31.png]](((
195 195  Open the sketch [[MQTT_Simple_Server>>url:https://github.com/dragino/Arduino-Profile-Examples/tree/master/libraries/Dragino/examples/LoRa/MQTT_Simple_Server]].(Board:Dragino Yun + UNO or LG01/OLG01,Port:Network ports.)and upload.
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196 196  )))
197 -1. [[~[~[image:https://wiki.dragino.com/images/thumb/7/73/MQTT_Sketch2.png/400px-MQTT_Sketch2.png~|~|height="540" width="400"~]~]>>url:https://wiki.dragino.com/index.php/File:MQTT_Sketch2.png]](((
243 +1. [[image:image-20220531141800-32.png]](((
198 198  Open Serial monitor.
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246 +
247 +
199 199  )))
200 -1. [[~[~[image:https://wiki.dragino.com/images/thumb/9/98/MQTT_Sketch_1.png/400px-MQTT_Sketch_1.png~|~|height="261" width="400"~]~]>>url:https://wiki.dragino.com/index.php/File:MQTT_Sketch_1.png]](((
249 +1. [[image:image-20220531141842-33.png]](((
201 201  Open the Sketch [[MQTT_Client>>url:https://github.com/dragino/Arduino-Profile-Examples/tree/master/libraries/Dragino/examples/IoTServer/ThingSpeak/MQTT_Client]]. (Board:Arduino/Genuino Uno.Port:Serial ports.)and upload.
251 +
252 +
253 +
202 202  )))
203 -1. [[~[~[image:https://wiki.dragino.com/images/thumb/3/3d/MQTT_Sketch3.png/400px-MQTT_Sketch3.png~|~|height="371" width="400"~]~]>>url:https://wiki.dragino.com/index.php/File:MQTT_Sketch3.png]](((
255 +1. [[image:image-20220531141927-34.png]](((
204 204  Open Serial monitor.
257 +
258 +
259 +
205 205  )))
206 206  1. Go to IoT Server to check the result.
207 207  1. (((
208 -[[~[~[image:https://wiki.dragino.com/images/thumb/4/43/MQTT_result_1.png/400px-MQTT_result_1.png~|~|alt="MQTT result 1.png" height="181" width="400"~]~]>>url:https://wiki.dragino.com/index.php/File:MQTT_result_1.png]]
263 +[[image:image-20220531142023-35.png]]
264 +
265 +
266 +
209 209  )))
210 210  1. (((
211 -[[~[~[image:https://wiki.dragino.com/images/thumb/7/70/MQTT_result_2.png/400px-MQTT_result_2.png~|~|alt="MQTT result 2.png" height="190" width="400"~]~]>>url:https://wiki.dragino.com/index.php/File:MQTT_result_2.png]]
269 +[[image:image-20220531142155-36.png]]
270 +
271 +
272 +
212 212  )))
213 213  
214 214  = 5. FAQ =
... ... @@ -219,18 +219,25 @@
219 219  
220 220  For example: for ThingSpeak, a MQTT publish command is:
221 221  
222 -{{{mosquitto_pub -h mqtt.thingspeak.com -p 1883 -u dragino -P QZXTAKE88V3S7O2J -i dragino_Client -t channels/200893/publish/B9Z0R25QNVEBKIFY -m "field1=34&field2=89&status=MQTTPUBLISH"
223 -}}}
283 +(% class="box infomessage" %)
284 +(((
285 +**mosquitto_pub -h mqtt.thingspeak.com -p 1883 -u dragino -P QZXTAKE88V3S7O2J  -i dragino_Client -t channels/200893/publish/B9Z0R25QNVEBKIFY -m "field1=34&field2=89&status=MQTTPUBLISH"**
286 +)))
224 224  
225 225  What now we need to put in the LG01 is how to combine this command.
226 226  
227 227  1. LG01 web console -> Sensor -> MQTT
228 228  1. Choose general Server
229 -1. [[~[~[image:https://wiki.dragino.com/images/thumb/e/ea/MQTT_Configure1.png/600px-MQTT_Configure1.png~|~|height="367" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:MQTT_Configure1.png]](((
292 +1. [[image:image-20220531142342-37.png]](((
230 230  Refer to your server to fill in.
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295 +
296 +
231 231  )))
232 -1. [[~[~[image:https://wiki.dragino.com/images/0/07/MQTT_Configure2.png~|~|height="93" width="538"~]~]>>url:https://wiki.dragino.com/index.php/File:MQTT_Configure2.png]](((
298 +1. [[image:image-20220531142447-38.png]](((
233 233  Ex:ThingSpeak Server
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301 +
234 234  )))
235 235  
236 236  According to MQTT commands: mosquitto_pub, we need to put
... ... @@ -249,7 +249,7 @@
249 249  
250 250  User can also enable MQTT debug in the LG01 ~-~-> IoT Server settings and run logread in Linux console to see how the mqtt command is compose. below is an example:
251 251  
252 -[[~[~[image:https://wiki.dragino.com/images/thumb/8/81/MQTT_Configure3.png/600px-MQTT_Configure3.png~|~|height="114" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:MQTT_Configure3.png]]
320 +[[image:image-20220531142525-39.png]]
253 253  
254 254  MQTT Logread example
255 255  
... ... @@ -258,20 +258,33 @@
258 258  
259 259  LG01 for 4.3.3 version,we have added watchdog feature. In order to avoid the gateway running process will get stuck. So add writing action on every times.
260 260  
261 -* [[~[~[image:https://wiki.dragino.com/images/thumb/f/f2/Wathcdog.png/400px-Wathcdog.png~|~|height="184" width="400"~]~]>>url:https://wiki.dragino.com/index.php/File:Wathcdog.png]](((
329 +* [[image:image-20220531142558-40.png]](((
262 262  Enable Sensor->Micro-Controller settings
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332 +
333 +
263 263  )))
264 -* [[~[~[image:https://wiki.dragino.com/images/thumb/8/82/MQTT_Sketch_2.png/400px-MQTT_Sketch_2.png~|~|height="233" width="400"~]~]>>url:https://wiki.dragino.com/index.php/File:MQTT_Sketch_2.png]](((
335 +* [[image:image-20220531142629-41.png]](((
265 265  Open the sketch [[MQTT_Simple_Server>>url:https://github.com/dragino/Arduino-Profile-Examples/tree/master/libraries/Dragino/examples/LoRa/MQTT_Simple_Server]].(Board:Dragino Yun + UNO or LG01/OLG01,Port:Network ports.)and upload.
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338 +
339 +
266 266  )))
267 -* [[~[~[image:https://wiki.dragino.com/images/2/21/Loop.png~|~|height="181" width="388"~]~]>>url:https://wiki.dragino.com/index.php/File:Loop.png]](((
341 +* [[image:image-20220531142659-42.png]](((
268 268  Each time the function loops, it uses the watchdog function once.
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344 +
345 +
269 269  )))
270 -* [[~[~[image:https://wiki.dragino.com/images/thumb/3/35/Dog.png/400px-Dog.png~|~|height="161" width="400"~]~]>>url:https://wiki.dragino.com/index.php/File:Dog.png]](((
347 +* [[image:image-20220531142720-43.png]](((
271 271  Open SSH and check watchdog result.If the result change constantly,the feature enable successfully.
349 +
350 +
351 +
272 272  )))
273 -* [[~[~[image:https://wiki.dragino.com/images/thumb/a/ac/Checkdog.png/400px-Checkdog.png~|~|height="222" width="400"~]~]>>url:https://wiki.dragino.com/index.php/File:Checkdog.png]](((
353 +* [[image:image-20220531142748-44.png]](((
274 274  If the time doesnt's change,you can refer it to calculate for checking status.
275 275  )))
276 276  
277 -== ==
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1 +11.5 KB
Content