Last modified by Edwin Chen on 2025/01/29 20:30
<
From version < 22.3 >
edited by Xiaoling
on 2022/05/26 16:48
To version < 29.2 >
edited by Xiaoling
on 2022/05/26 17:11
>
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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]]
26 +[[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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197 197  * This packet must match the frequency of the RX1 or RX2 window.
198 198  * This packet must match the DataRate of RX1(RX1DR) or RX2 (RX2DR). **This is the common fail point, because different lorawan server might use different RX2DR and they don't info End Node via ADR message so cause the mismatch. If this happen, user need to change the RX2DR to the right value in end node. In OTAA, LoRaWAN Server will send the RX2DR setting in Join Accept message so the end node will auto adjust. but ABP uplink doesn't support this auto change.**
199 199  
200 -
201 201  == 5.2 See Debug Info ==
202 202  
203 203  (((
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301 301  
302 302  == 5.3 If problem doesn’t solve ==
303 303  
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:**
303 +(% 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:**
305 305  
306 306  * End node console to show the transmit freuqency and DR.
307 307  * Gateway (from gateway UI) traffic to show the packet got from end node and receive from Server.
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308 308  * Gateway traffic (from server UI) to shows the data exchange between gateway and server.
309 309  * End Node traffic (from server UI) to shows end node activity in server.
310 310  
311 -(% class="wikigeneratedid" %)
312 -​​​​​​​
313 -
314 314  = 6. Downlink Issue ~-~- Packet REJECTED, unsupported frequency =
315 315  
316 316  (((
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342 342  
343 343  (% class="box infomessage" %)
344 344  (((
345 -Change to ABP Mode: AT+NJM=0
341 +**Change to ABP Mode: AT+NJM=0**
346 346  )))
347 347  
348 348  (% class="box infomessage" %)
349 349  (((
350 -Change to fix frequency: AT+CHS=904900000
346 +**Change to fix frequency: AT+CHS=904900000**
351 351  )))
352 352  
353 353  (% class="box infomessage" %)
354 354  (((
355 -Change to fix DR: AT+DR=0
351 +**Change to fix DR: AT+DR=0**
356 356  )))
357 357  
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 +[[image:image-20220526165525-16.png]]
359 359  
356 +
360 360  2. In LG02 , configure to receive above message
361 361  
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 +[[image:image-20220526165612-17.png]]
363 363  
361 +
364 364  In LG02 console, we can see the hex receive are:
365 365  
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 +[[image:image-20220526171112-21.png]]
367 367  
366 +
368 368  3. Decode the info in web
369 369  
370 370  [[https:~~/~~/lorawan-packet-decoder-0ta6puiniaut.runkit.sh>>url:https://lorawan-packet-decoder-0ta6puiniaut.runkit.sh/]]
... ... @@ -379,7 +379,7 @@
379 379  
380 380  [[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]]
381 381  
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 +[[image:image-20220526171029-20.png]]
383 383  
384 384  (((
385 385   The FRMPayload is the device payload.
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470 470  (Any combination of 16 bit codes can be used）
471 471  
472 472  
473 -(% class="wikigeneratedid" %)
474 -
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