Last modified by Edwin Chen on 2025/01/29 20:30
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From version < 22.2 >
edited by Xiaoling
on 2022/05/26 16:48
To version < 31.2 >
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1 1  **~ Contents:**
2 2  
3 -(((
4 -
5 -)))
6 -
7 7  {{toc/}}
8 8  
9 9  
6 +
10 10  = 1. OTAA Join Process Debug =
11 11  
12 12  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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23 23  * If the device is sending join request to server?
24 24  * What frequency the device is sending?
25 25  
26 -[[image:image-20220526163523-1.png]]
23 +[[image:image-20220526164956-15.png]]
27 27  
28 28  Console Output from End device to see the transmit frequency
29 29  
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185 185  Depends on Class A or Class C, the receive windows will be a little difference,
186 186  )))
187 187  
188 -[[image:image-20220526164547-11.png]]
185 +[[image:image-20220531161828-1.png]]
189 189  
190 190  receive windows for Class A and Class C
191 191  
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298 298   Receive data
299 299   1:0012345678}}}
300 300  
301 -(% class="wikigeneratedid" %)
302 -​​​​​​​
303 303  
304 304  == 5.3 If problem doesn’t solve ==
305 305  
306 -**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:**
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:**
307 307  
308 308  * End node console to show the transmit freuqency and DR.
309 309  * Gateway (from gateway UI) traffic to show the packet got from end node and receive from Server.
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310 310  * Gateway traffic (from server UI) to shows the data exchange between gateway and server.
311 311  * End Node traffic (from server UI) to shows end node activity in server.
312 312  
308 +
313 313  = 6. Downlink Issue ~-~- Packet REJECTED, unsupported frequency =
314 314  
315 315  (((
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341 341  
342 342  (% class="box infomessage" %)
343 343  (((
344 -Change to ABP Mode: AT+NJM=0
340 +**Change to ABP Mode: AT+NJM=0**
345 345  )))
346 346  
347 347  (% class="box infomessage" %)
348 348  (((
349 -Change to fix frequency: AT+CHS=904900000
345 +**Change to fix frequency: AT+CHS=904900000**
350 350  )))
351 351  
352 352  (% class="box infomessage" %)
353 353  (((
354 -Change to fix DR: AT+DR=0
350 +**Change to fix DR: AT+DR=0**
355 355  )))
356 356  
357 -[[image:https://wiki.dragino.com/images/e/e6/Decrypt_a_LoRaWAN_Packet1.jpg||alt="Decrypt a LoRaWAN Packet1.jpg" height="607" width="558"]]
353 +[[image:image-20220526165525-16.png]]
358 358  
355 +
359 359  2. In LG02 , configure to receive above message
360 360  
361 -[[image:https://wiki.dragino.com/images/c/c3/Decrypt_a_LoRaWAN_Packet2.jpg||alt="Decrypt a LoRaWAN Packet2.jpg" height="337" width="558"]]
358 +[[image:image-20220526165612-17.png]]
362 362  
360 +
363 363  In LG02 console, we can see the hex receive are:
364 364  
365 -[[image:https://wiki.dragino.com/images/f/f1/Decrypt_a_LoRaWAN_Packet3.jpg||alt="Decrypt a LoRaWAN Packet3.jpg" height="179" width="558"]]
363 +[[image:image-20220526171112-21.png]]
366 366  
365 +
367 367  3. Decode the info in web
368 368  
369 369  [[https:~~/~~/lorawan-packet-decoder-0ta6puiniaut.runkit.sh>>url:https://lorawan-packet-decoder-0ta6puiniaut.runkit.sh/]]
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378 378  
379 379  [[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]]
380 380  
381 -[[image:https://wiki.dragino.com/images/7/77/Decrypt_a_LoRaWAN_Packet4.png||alt="Decrypt a LoRaWAN Packet4.png" height="390" width="558"]]
380 +[[image:image-20220526171029-20.png]]
382 382  
383 383  (((
384 384   The FRMPayload is the device payload.
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389 389  
390 390  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.
391 391  
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  
438 -
439 439  
440 440  )))
441 441  
442 442  = 11. Why my Dev EUI and APP EUI is 0x000000000000, how to solve? =
443 443  
443 +(((
444 444  It is possible the keys is erased during upgrading of firmware. and the console output shows below after AT+CFG
445 +)))
445 445  
447 +(((
446 446  AT+APPKEY=00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
449 +)))
447 447  
451 +(((
448 448  AT+NWKSKEY=00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
453 +)))
449 449  
455 +(((
450 450  AT+APPSKEY=00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
457 +)))
451 451  
459 +(((
452 452  AT+APPEUI=00 00 00 00 00 00 00 00
461 +)))
453 453  
463 +(((
464 +
465 +)))
454 454  
467 +(((
455 455  You can get the keys from the box sticker or send mail to Dragino Support to check keys with the provided SN number.
469 +)))
456 456  
471 +(((
457 457  You can rewrites the keys by running commands in AT Console
473 +)))
458 458  
459 -For example：
475 +(((
476 +**For example：**
477 +)))
460 460  
479 +(((
461 461  AT+APPKEY=85 41 47 20 45 58 28 14 16 82 A0 F0 80 0D DD EE
481 +)))
462 462  
483 +(((
463 463  AT+NWKSKEY=AA CC B0 20 30 45 37 32 14 1E 14 93 E2 3B 20 11
485 +)))
464 464  
487 +(((
465 465  AT+APPSKEY=11 23 02 20 30 20 30 60 80 20 20 30 30 20 10 10
489 +)))
466 466  
491 +(((
467 467  AT+APPEUI=2C 45 47 E3 24 12 23 24
493 +)))
468 468  
495 +(((
469 469  (Any combination of 16 bit codes can be used）
497 +)))
470 470  
471 471  
472 472  (% class="wikigeneratedid" %)
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