Last modified by Bei Jinggeng on 2024/05/31 09:53
<
From version < 108.27 >
edited by Xiaoling
on 2024/01/19 17:55
To version < 111.1
edited by Bei Jinggeng
on 2024/05/31 09:53
Change comment: There is no comment for this version

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Author
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1 -XWiki.Xiaoling
1 +XWiki.Bei
Content
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1 1  
2 2  
3 3  (% style="text-align:center" %)
4 -[[image:image-20220709085040-1.png||height="542" width="524"]]
4 +[[image:image-20220709085040-1.png||_mstalt="429481" height="542" width="524"]]
5 5  
6 6  
7 7  
... ... @@ -52,7 +52,7 @@
52 52  
53 53  )))
54 54  
55 -[[image:1657327959271-447.png]]
55 +[[image:1657327959271-447.png||_mstalt="297700"]]
56 56  
57 57  
58 58  == 1.2 ​ Features ==
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118 118  == 1.5  Pin Definitions ==
119 119  
120 120  
121 -[[image:1657328609906-564.png]]
121 +[[image:1657328609906-564.png||_mstalt="297440"]]
122 122  
123 123  
124 124  = 2.  Use NDDS75 to communicate with IoT Server =
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139 139  
140 140  )))
141 141  
142 -[[image:1657328659945-416.png]]
142 +[[image:1657328659945-416.png||_mstalt="297999"]]
143 143  
144 144  (((
145 145  
... ... @@ -163,7 +163,7 @@
163 163  )))
164 164  
165 165  
166 -[[image:1657328756309-230.png]]
166 +[[image:1657328756309-230.png||_mstalt="294515"]]
167 167  
168 168  
169 169  === 2.2.2 Insert SIM card ===
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177 177  User need to take out the NB-IoT module and insert the SIM card like below:
178 178  )))
179 179  
180 -[[image:1657328884227-504.png]]
180 +[[image:1657328884227-504.png||_mstalt="295776"]]
181 181  
182 182  
183 183  === 2.2.3 Connect USB – TTL to NDDS75 to configure it ===
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189 189  )))
190 190  )))
191 191  
192 -[[image:image-20220709092052-2.png]]
192 +[[image:image-20220709092052-2.png||_mstalt="430235"]]
193 193  
194 194  
195 195  (% style="color:blue" %)**Connection:**
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213 213  Make sure the switch is in FLASH position, then power on device by connecting the jumper on NDDS75. NDDS75 will output system info once power on as below, we can enter the (% style="color:green" %)**password: 12345678**(%%) to access AT Command input.
214 214  )))
215 215  
216 -[[image:1657329814315-101.png]]
216 +[[image:1657329814315-101.png||_mstalt="292084"]]
217 217  
218 218  
219 219  (((
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249 249  
250 250  )))
251 251  
252 -[[image:1657330452568-615.png]]
252 +[[image:1657330452568-615.png||_mstalt="295555"]]
253 253  
254 254  
255 255  (((
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256 256  After configure the server address and (% style="color:green" %)**reset the device**(%%) (via AT+ATZ ), NDDS75 will start to uplink sensor values to CoAP server.
257 257  )))
258 258  
259 -[[image:1657330472797-498.png]]
259 +[[image:1657330472797-498.png||_mstalt="299481"]]
260 260  
261 261  
262 262  === 2.2.5 Use UDP protocol to uplink data(Default protocol) ===
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264 264  
265 265  * (% style="color:blue" %)**AT+PRO=2   ** (%%) ~/~/  Set to use UDP protocol to uplink
266 266  * (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5601   ** (%%) ~/~/  to set UDP server address and port
267 -* (% style="color:blue" %)**AT+CFM=1       ** (%%) ~/~/  If the server does not respond, this command is unnecessary
268 268  
269 -[[image:1657330501006-241.png]]
268 +[[image:1657330501006-241.png||_mstalt="290121"]]
270 270  
271 271  
272 -[[image:1657330533775-472.png]]
271 +[[image:1657330533775-472.png||_mstalt="295763"]]
273 273  
274 274  
275 275  === 2.2.6 Use MQTT protocol to uplink data ===
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283 283  * (% style="color:blue" %)**AT+PUBTOPIC=NDDS75_PUB                 **(%%)~/~/  Set the sending topic of MQTT
284 284  * (% style="color:blue" %)**AT+SUBTOPIC=NDDS75_SUB          **(%%) ~/~/  Set the subscription topic of MQTT
285 285  
286 -[[image:1657249978444-674.png]]
285 +[[image:1657249978444-674.png||_mstalt="299377"]]
287 287  
288 288  
289 -[[image:1657330723006-866.png]]
288 +[[image:1657330723006-866.png||_mstalt="294996"]]
290 290  
291 291  
292 292  (((
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300 300  * (% style="color:blue" %)**AT+PRO=4   ** (%%) ~/~/  Set to use TCP protocol to uplink
301 301  * (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5600   **(%%) ~/~/  to set TCP server address and port
302 302  
303 -[[image:image-20220709093918-1.png]]
302 +[[image:image-20220709093918-1.png||_mstalt="433706"]]
304 304  
305 305  
306 -[[image:image-20220709093918-2.png]]
305 +[[image:image-20220709093918-2.png||_mstalt="434070"]]
307 307  
308 308  
309 309  === 2.2.8 Change Update Interval ===
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344 344  )))
345 345  
346 346  
347 -[[image:1657331036973-987.png]]
346 +[[image:1657331036973-987.png||_mstalt="298740"]]
348 348  
349 349  
350 350  The payload is **ASCII** string, representative same HEX:
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378 378  
379 379  If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NDDS75 uplink data.
380 380  
381 -[[image:image-20220908175246-1.png]]
380 +[[image:image-20220908175246-1.png||_mstalt="432328"]]
382 382  
383 383  
384 384  The payload is ASCII string, representative same HEX:
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401 401  
402 402  * (% style="color:#037691" %)**Distance:**(%%) 0x0039= 57 = 57
403 403  
404 -* (% style="color:#037691" %)**Time stamp:**(%%) 0x6315537b =1662342011  ([[Unix Epoch Time>>url:http://www.epochconverter.com/]])
403 +* (% _mstmutation="1" style="color:#037691" %)**Time stamp:**(%%) 0x6315537b =1662342011  ([[Unix Epoch Time>>url:http://www.epochconverter.com/||_mstmutation="1"]])
405 405  
406 406  * (% style="color:#037691" %)**Distance,Time stamp:**(%%) 00396319baf0
407 407  
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653 653  
654 654   The diagram below explains the relationship between TR, NOUD, and TDC more clearly**:**
655 655  
656 -[[image:image-20221009001114-1.png||height="687" width="955"]]
655 +[[image:image-20221009001114-1.png||_mstalt="425269" height="687" width="955"]]
657 657  
658 658  
659 659  == 2.8  Read or Clear cached data ==
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664 664  * (% style="color:#037691" %)** AT+CDP ** (%%) ~/~/  Read cached data
665 665  * (% style="color:#037691" %)** AT+CDP=0**  (%%) ~/~/  Clear cached data
666 666  
667 -[[image:image-20220908175333-2.png]]
666 +[[image:image-20220908175333-2.png||_mstalt="431665"]]
668 668  
669 669  
670 670  == 2.9  ​LED Indicator ==
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711 711  )))
712 712  
713 713  (((
714 -The AT Command set can refer the BC35-G NB-IoT Module AT Command: [[https:~~/~~/www.dragino.com/downloads/index.php?dir=datasheet/other_vendors/BC35-G/>>url:https://www.dragino.com/downloads/index.php?dir=datasheet/other_vendors/BC35-G/]] 
713 +The AT Command set can refer the BC35-G NB-IoT Module AT Command: [[https:~~/~~/www.dragino.com/downloads/index.php?dir=datasheet/other_vendors/BC35-G/>>url:https://www.dragino.com/downloads/index.php?dir=datasheet/other_vendors/BC35-G/||_mstmutation="1"]] 
715 715  
716 716  
717 717  )))
718 718  
719 -[[image:1657333200519-600.png]]
718 +[[image:1657333200519-600.png||_mstalt="291603"]]
720 720  
721 721  
722 722  = 4.  Using the AT Commands =
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788 788  AT+URI            :  Resource parameters
789 789  
790 790  
791 -(% style="color:#037691" %)**UDP Management**
792 792  
793 -AT+CFM          :  Upload confirmation mode (only valid for UDP)
794 -
795 -
796 796  (% style="color:#037691" %)**MQTT Management**
797 797  
798 798  AT+CLIENT  :  Get or Set MQTT client
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859 859  This means sensor is trying to join the NB-IoT network but fail. Please see this link for **//[[trouble shooting for signal strenght:99>>doc:Main.CSQ\:99,99.WebHome]]//**.
860 860  
861 861  
857 +== 6.4 Why does the DDS75 sensor keep flashing blue? ==
858 +
859 +This is caused by the incompatibility between the latest firmware and the hardware.
860 +
861 +Please check your hardware production date
862 +
863 +The first two digits are the week of the year, and the last two digits are the year.
864 +
865 +The number 3322 is the first batch we changed the power IC.
866 +
867 +As shown below:
868 +
869 + [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/image-20240531090837-1.png?rev=1.1||_mstalt="431418" alt="image-20240531090837-1.png"]]
870 +
871 +Have you updated the Lora ST's firmware? Please send downline 26 01 to check the version number.
872 +
873 +If it is v1.4.1 version, please modify a value according to the above four digits, the AT command is AT+POWERIC. The date after 3322 is AT+POWERIC=1, and the date before it is AT+POWERIC=0.
874 +
875 +Downlink is FF 01(AT+POWERIC=1);FF 00(AT+POWERIC=0).
876 +
877 +
862 862  = 7. ​ Order Info =
863 863  
864 864  

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