Last modified by Bei Jinggeng on 2024/05/31 09:53
<
From version < 109.1 >
edited by Mengting Qiu
on 2024/04/02 16:59
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.ting
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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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
267 267  
268 -[[image:1657330501006-241.png]]
268 +[[image:1657330501006-241.png||_mstalt="290121"]]
269 269  
270 270  
271 -[[image:1657330533775-472.png]]
271 +[[image:1657330533775-472.png||_mstalt="295763"]]
272 272  
273 273  
274 274  === 2.2.6 Use MQTT protocol to uplink data ===
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282 282  * (% style="color:blue" %)**AT+PUBTOPIC=NDDS75_PUB                 **(%%)~/~/  Set the sending topic of MQTT
283 283  * (% style="color:blue" %)**AT+SUBTOPIC=NDDS75_SUB          **(%%) ~/~/  Set the subscription topic of MQTT
284 284  
285 -[[image:1657249978444-674.png]]
285 +[[image:1657249978444-674.png||_mstalt="299377"]]
286 286  
287 287  
288 -[[image:1657330723006-866.png]]
288 +[[image:1657330723006-866.png||_mstalt="294996"]]
289 289  
290 290  
291 291  (((
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299 299  * (% style="color:blue" %)**AT+PRO=4   ** (%%) ~/~/  Set to use TCP protocol to uplink
300 300  * (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5600   **(%%) ~/~/  to set TCP server address and port
301 301  
302 -[[image:image-20220709093918-1.png]]
302 +[[image:image-20220709093918-1.png||_mstalt="433706"]]
303 303  
304 304  
305 -[[image:image-20220709093918-2.png]]
305 +[[image:image-20220709093918-2.png||_mstalt="434070"]]
306 306  
307 307  
308 308  === 2.2.8 Change Update Interval ===
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343 343  )))
344 344  
345 345  
346 -[[image:1657331036973-987.png]]
346 +[[image:1657331036973-987.png||_mstalt="298740"]]
347 347  
348 348  
349 349  The payload is **ASCII** string, representative same HEX:
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377 377  
378 378  If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NDDS75 uplink data.
379 379  
380 -[[image:image-20220908175246-1.png]]
380 +[[image:image-20220908175246-1.png||_mstalt="432328"]]
381 381  
382 382  
383 383  The payload is ASCII string, representative same HEX:
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400 400  
401 401  * (% style="color:#037691" %)**Distance:**(%%) 0x0039= 57 = 57
402 402  
403 -* (% 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"]])
404 404  
405 405  * (% style="color:#037691" %)**Distance,Time stamp:**(%%) 00396319baf0
406 406  
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652 652  
653 653   The diagram below explains the relationship between TR, NOUD, and TDC more clearly**:**
654 654  
655 -[[image:image-20221009001114-1.png||height="687" width="955"]]
655 +[[image:image-20221009001114-1.png||_mstalt="425269" height="687" width="955"]]
656 656  
657 657  
658 658  == 2.8  Read or Clear cached data ==
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663 663  * (% style="color:#037691" %)** AT+CDP ** (%%) ~/~/  Read cached data
664 664  * (% style="color:#037691" %)** AT+CDP=0**  (%%) ~/~/  Clear cached data
665 665  
666 -[[image:image-20220908175333-2.png]]
666 +[[image:image-20220908175333-2.png||_mstalt="431665"]]
667 667  
668 668  
669 669  == 2.9  ​LED Indicator ==
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710 710  )))
711 711  
712 712  (((
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/]] 
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"]] 
714 714  
715 715  
716 716  )))
717 717  
718 -[[image:1657333200519-600.png]]
718 +[[image:1657333200519-600.png||_mstalt="291603"]]
719 719  
720 720  
721 721  = 4.  Using the AT Commands =
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854 854  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]]//**.
855 855  
856 856  
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 +
857 857  = 7. ​ Order Info =
858 858  
859 859  

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