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Last modified by Xiaoling on 2025/05/05 08:51
From version 32.15
edited by Xiaoling
on 2022/07/13 15:36
Change comment: There is no comment for this version
To version 33.1
edited by Edwin Chen
on 2022/10/19 23:11
Change comment: There is no comment for this version

Summary

Details

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Author
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1 -XWiki.Xiaoling
1 +XWiki.Edwin
Content
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17 17  * End Node Keys screen shot shows in end node and server. so we can check if the keys are correct. (In most case, we found keys doesn't match, especially APP EUI)
18 18  
19 19  
20 -
21 21  (% style="color:blue" %)**1. End Device Join Screen shot, we can check:**
22 22  
23 23  * If the device is sending join request to server?
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28 28  Console Output from End device to see the transmit frequency
29 29  
30 30  
30 +
31 31  (% style="color:blue" %)**2. Gateway packet traffic in gateway web or ssh. we can check:**
32 32  
33 33  * If the gateway receive the Join request packet from sensor? (If this fail, check if the gateway and sensor works on the match frequency)
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62 62  Check if OTAA Keys match the keys in device
63 63  
64 64  
65 +
65 65  = 2. Notice of US915/CN470/AU915 Frequency band =
66 66  
67 67  
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133 133  )))
134 134  
135 135  
137 +
136 136  = 3. Why i see data lost/unperiocially uplink data? Even the signal strength is good =
137 137  
138 138  
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155 155  )))
156 156  
157 157  
160 +
158 158  = 4. Transmision on ABP Mode =
159 159  
160 160  
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183 183  Disable Frame Counter Check in ABP Mode
184 184  
185 185  
189 +
186 186  = 5. Downstream Debug =
187 187  
188 188  == 5.1 How it work ==
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209 209  
210 210  
211 211  
212 -
213 213  == 5.2 See Debug Info ==
214 214  
215 215  
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243 243  )))
244 244  
245 245  
249 +
246 246  (((
247 247  (% style="color:blue" %)**For LoRaWAN Gateway**
248 248  )))
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258 258  )))
259 259  
260 260  
265 +
261 261  (((
262 262  (% style="color:blue" %)**For End Node**
263 263  )))
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272 272  (% style="color:#037691" %)**AT+RX1DL=1000**       (%%) ** ~-~-->**  Receive Delay 1
273 273  (% style="color:#037691" %)**AT+RX2DL=2000**       (%%) **~-~--> ** Receive Delay 2
274 274  
280 +
275 275  
276 276  )))
277 277  
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289 289  
290 290  (((
291 291  
298 +
299 +
292 292  )))
293 293  
294 294  (((
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307 307   1:0012345678}}}
308 308  
309 309  
318 +
310 310  == 5.3 If problem doesn't solve ==
311 311  
312 312  
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345 345  )))
346 346  
347 347  
357 +
348 348  = 7. Decrypt a LoRaWAN Packet =
349 349  
350 350  
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358 358  [[image:image-20220526165525-16.png]]
359 359  
360 360  
371 +
361 361  (% style="color:blue" %)**2. In LG02 , configure to receive above message**
362 362  
363 363  [[image:image-20220526165612-17.png]]
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368 368  [[image:image-20220526171112-21.png]]
369 369  
370 370  
382 +
371 371  (% style="color:blue" %)**3. Decode the info in web**
372 372  
373 373  [[https:~~/~~/lorawan-packet-decoder-0ta6puiniaut.runkit.sh>>url:https://lorawan-packet-decoder-0ta6puiniaut.runkit.sh/]]
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390 390  )))
391 391  
392 392  
405 +
393 393  = 8. Why i see uplink 0x00 periodcally on the LHT65 v1.8 firmware =
394 394  
395 395  
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396 396  Since firmware v1.8, LHT65 will send MAC command to request time, in the case if DR only support max 11 bytes, this MAC command will be bundled to a separate uplink payload with 0x00.
397 397  
398 398  
412 +
399 399  = 9. Why do I see a "MIC Mismatch" error message from the server? =
400 400  
401 401  
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430 430  = 10. Why i got the payload only with "0x00" or "AA~=~="? =
431 431  
432 432  
433 -* If you are using US915, AU915 and AS923 frequencies.This is normal phenomenon.
447 +* If you are using US915, AU915 or AS923 frequencies.It is possible because: .
434 434  
435 -(((
436 -When using the frequency mentioned above, the server sometimes adjusts the rate of the node, because the node defaults to the adaptive rate.
437 -)))
449 +When using the frequency mentioned above, the server sometimes adjusts the Data Rate (DR) of the node, because the end node has Adaptive Data Rate (ADR) Enabled.
438 438  
439 -(((
440 440  When the server adjusts your node rate to 0, the maximum payload length is 11 bytes. The server sometimes sends an ADR packet to the node,and the node will reply to the server after receiving the ADR packet, but the number of payload bytes exceeds the limit,so it will send a normal uplink packet, and an additional 00 data packet.
441 -)))
442 442  
443 -* (((
444 444  Solution: Use the decoder to filter out this 00 packet.
445 -)))
446 -* (((
454 +
447 447  Some node decoders may not have filtering function, or you need decoders of other servers and formats. Please send an email to [[david.huang@dragino.cc>>mailto:david.huang@dragino.cc]]
448 448  
449 449  
450 450  
451 -
452 -)))
453 -
454 454  = 11. Why my Dev EUI and APP EUI is 0x000000000000, how to solve? =
455 455  
456 456  
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512 512  (Any combination of 16 bit codes can be used）
513 513  
514 514  
520 +
515 515  = 12. I set my device is LoRaWAN Class C mode, why i still see Class A after boot? =
516 516  )))
517 517