Last modified by Edwin Chen on 2025/01/29 20:30
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From version < 31.2 >
edited by Xiaoling
on 2022/05/31 16:18
To version < 22.3 >
edited by Xiaoling
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1 1  **~ Contents:**
2 2  
3 +(((
4 +
5 +)))
6 +
3 3  {{toc/}}
4 4  
5 5  
6 -
7 7  = 1. OTAA Join Process Debug =
8 8  
9 9  These pages are useful to check what is wrong on the Join process. Below shows the four steps that we can check the Join Process.
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20 20  * If the device is sending join request to server?
21 21  * What frequency the device is sending?
22 22  
23 -[[image:image-20220526164956-15.png]]
26 +[[image:image-20220526163523-1.png]]
24 24  
25 25  Console Output from End device to see the transmit frequency
26 26  
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182 182  Depends on Class A or Class C, the receive windows will be a little difference,
183 183  )))
184 184  
185 -[[image:image-20220531161828-1.png]]
188 +[[image:image-20220526164547-11.png]]
186 186  
187 187  receive windows for Class A and Class C
188 188  
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298 298  
299 299  == 5.3 If problem doesn’t solve ==
300 300  
301 -(% style="color:red" %)**If user has checked below steps and still can't solve the problem, please send us (support @ dragino.com) the sceenshots for each step to check. They include:**
304 +**If user has checked below steps and still can't solve the problem, please send us (support @ dragino.com) the sceenshots for each step to check. They include:**
302 302  
303 303  * End node console to show the transmit freuqency and DR.
304 304  * Gateway (from gateway UI) traffic to show the packet got from end node and receive from Server.
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305 305  * Gateway traffic (from server UI) to shows the data exchange between gateway and server.
306 306  * End Node traffic (from server UI) to shows end node activity in server.
307 307  
311 +(% class="wikigeneratedid" %)
312 +​​​​​​​
308 308  
309 309  = 6. Downlink Issue ~-~- Packet REJECTED, unsupported frequency =
310 310  
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337 337  
338 338  (% class="box infomessage" %)
339 339  (((
340 -**Change to ABP Mode: AT+NJM=0**
345 +Change to ABP Mode: AT+NJM=0
341 341  )))
342 342  
343 343  (% class="box infomessage" %)
344 344  (((
345 -**Change to fix frequency: AT+CHS=904900000**
350 +Change to fix frequency: AT+CHS=904900000
346 346  )))
347 347  
348 348  (% class="box infomessage" %)
349 349  (((
350 -**Change to fix DR: AT+DR=0**
355 +Change to fix DR: AT+DR=0
351 351  )))
352 352  
353 -[[image:image-20220526165525-16.png]]
358 +[[image:https://wiki.dragino.com/images/e/e6/Decrypt_a_LoRaWAN_Packet1.jpg||alt="Decrypt a LoRaWAN Packet1.jpg" height="607" width="558"]]
354 354  
355 -
356 356  2. In LG02 , configure to receive above message
357 357  
358 -[[image:image-20220526165612-17.png]]
362 +[[image:https://wiki.dragino.com/images/c/c3/Decrypt_a_LoRaWAN_Packet2.jpg||alt="Decrypt a LoRaWAN Packet2.jpg" height="337" width="558"]]
359 359  
360 -
361 361  In LG02 console, we can see the hex receive are:
362 362  
363 -[[image:image-20220526171112-21.png]]
366 +[[image:https://wiki.dragino.com/images/f/f1/Decrypt_a_LoRaWAN_Packet3.jpg||alt="Decrypt a LoRaWAN Packet3.jpg" height="179" width="558"]]
364 364  
365 -
366 366  3. Decode the info in web
367 367  
368 368  [[https:~~/~~/lorawan-packet-decoder-0ta6puiniaut.runkit.sh>>url:https://lorawan-packet-decoder-0ta6puiniaut.runkit.sh/]]
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377 377  
378 378  [[https:~~/~~/lorawan-packet-decoder-0ta6puiniaut.runkit.sh/?data=40c1190126800100024926272bf18bbb6341584e27e23245&nwkskey=00000000000000000000000000000111&appskey=00000000000000000000000000000111>>url:https://lorawan-packet-decoder-0ta6puiniaut.runkit.sh/?data=40c1190126800100024926272bf18bbb6341584e27e23245&nwkskey=00000000000000000000000000000111&appskey=00000000000000000000000000000111]]
379 379  
380 -[[image:image-20220526171029-20.png]]
382 +[[image:https://wiki.dragino.com/images/7/77/Decrypt_a_LoRaWAN_Packet4.png||alt="Decrypt a LoRaWAN Packet4.png" height="390" width="558"]]
381 381  
382 382  (((
383 383   The FRMPayload is the device payload.
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388 388  
389 389  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.
390 390  
391 -
392 392  = 9. Why do I see a "MIC Mismatch" error message from the server? =
393 393  
394 394  (((
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435 435  * (((
436 436  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]]
437 437  
439 +
438 438  
439 439  )))
440 440  
441 441  = 11. Why my Dev EUI and APP EUI is 0x000000000000, how to solve? =
442 442  
443 -(((
444 444  It is possible the keys is erased during upgrading of firmware. and the console output shows below after AT+CFG
445 -)))
446 446  
447 -(((
448 448  AT+APPKEY=00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
449 -)))
450 450  
451 -(((
452 452  AT+NWKSKEY=00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
453 -)))
454 454  
455 -(((
456 456  AT+APPSKEY=00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
457 -)))
458 458  
459 -(((
460 460  AT+APPEUI=00 00 00 00 00 00 00 00
461 -)))
462 462  
463 -(((
464 -
465 -)))
466 466  
467 -(((
468 468  You can get the keys from the box sticker or send mail to Dragino Support to check keys with the provided SN number.
469 -)))
470 470  
471 -(((
472 472  You can rewrites the keys by running commands in AT Console
473 -)))
474 474  
475 -(((
476 -**For example：**
477 -)))
460 +For example：
478 478  
479 -(((
480 480  AT+APPKEY=85 41 47 20 45 58 28 14 16 82 A0 F0 80 0D DD EE
481 -)))
482 482  
483 -(((
484 484  AT+NWKSKEY=AA CC B0 20 30 45 37 32 14 1E 14 93 E2 3B 20 11
485 -)))
486 486  
487 -(((
488 488  AT+APPSKEY=11 23 02 20 30 20 30 60 80 20 20 30 30 20 10 10
489 -)))
490 490  
491 -(((
492 492  AT+APPEUI=2C 45 47 E3 24 12 23 24
493 -)))
494 494  
495 -(((
496 496  (Any combination of 16 bit codes can be used）
497 -)))
498 498  
499 499  
500 500  (% class="wikigeneratedid" %)
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