Last modified by Edwin Chen on 2025/01/29 20:30
<
From version < 4.8 >
edited by Xiaoling
on 2022/05/11 15:12
To version < 10.1 >
edited by Xiaoling
on 2022/05/26 16:36
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Change comment: Uploaded new attachment "image-20220526163608-2.png", version {1}

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1 1  **~ Contents:**
2 2  
3 +(((
4 +
5 +)))
6 +
3 3  {{toc/}}
4 4  
5 5  
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248 248  we can use AT Command (AT+CFG) to check the RX1 configure and RX2 configure. as below:
249 249  )))
250 250  
251 -(% class="box infomessage" %)
252 252  (((
253 -AT+RX2FQ=869525000 ~-~--> The RX2 Window frequency
256 +
254 254  )))
255 255  
256 -(% class="box infomessage" %)
257 257  (((
258 -AT+RX2DR=3 ~-~--> The RX2 DataRate
259 -)))
260 -
261 261  (% class="box infomessage" %)
262 262  (((
263 - AT+RX1DL=1000 ~-~--> Receive Delay 1
262 +AT+RX2FQ=869525000     ~-~--> The RX2 Window frequency
263 +AT+RX2DR=3      ~-~--> The RX2 DataRate
264 +AT+RX1DL=1000   ~-~--> Receive Delay 1
265 +AT+RX2DL=2000   ~-~--> Receive Delay 2
264 264  )))
265 -
266 -(% class="box infomessage" %)
267 -(((
268 - AT+RX2DL=2000 ~-~--> Receive Delay 2
269 269  )))
270 270  
271 271  (((
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272 272  **when the device running, we can see below info:**
273 273  )))
274 274  
275 -(((
276 -
277 -)))
278 -
279 279  {{{ [12502]***** UpLinkCounter= 0 *****
280 280   [12503]TX on freq 868500000 Hz at DR 0
281 281   [13992]txDone
282 - [15022]RX on freq 868500000 Hz at DR 0 --> RX1 window open at frequency: 868500000, DR0, after 15022-13992= 1030ms of txdone
283 - [15222]rxTimeOut --> no packet arrive in RX1 window. (duration: 200ms)
284 - [15987]RX on freq 869525000 Hz at DR 3 --> RX2 window open at frequency: 869525000, DR3, after 15987-13992= 1995ms of txdone
285 - [16027]rxTimeOut --> no packet arrive in RX2 window. (duration: 40 ms)}}}
276 + [15022]RX on freq 868500000 Hz at DR 0 --> RX1 window open at frequency: 868500000, DR0, after 15022-13992= 1030ms of txdone
277 + [15222]rxTimeOut --> no packet arrive in RX1 window. (duration: 200ms)
278 + [15987]RX on freq 869525000 Hz at DR 3 --> RX2 window open at frequency: 869525000, DR3, after 15987-13992= 1995ms of txdone
279 + [16027]rxTimeOut --> no packet arrive in RX2 window. (duration: 40 ms)}}}
286 286  
287 287  (((
288 288  
... ... @@ -298,7 +298,7 @@
298 298   [15022]RX on freq 868100000 Hz at DR 0
299 299   [15222]rxTimeOut
300 300   [15987]RX on freq 869525000 Hz at DR 3
301 - [16185]rxDone --> We have got the downstream packet.
295 + [16185]rxDone --> We have got the downstream packet.
302 302   Rssi= -64
303 303   Receive data
304 304   1:0012345678}}}
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378 378  
379 379  AT+APPSKEY=00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 11 (End Node App Session Key)
380 380  
381 -(((
382 382  [[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]]
383 -)))
384 384  
385 385  [[image:https://wiki.dragino.com/images/7/77/Decrypt_a_LoRaWAN_Packet4.png||alt="Decrypt a LoRaWAN Packet4.png" height="390" width="558"]]
386 386  
387 -The FRMPayload is the device payload.
379 +(((
380 + The FRMPayload is the device payload.
381 +)))
388 388  
389 389  
390 390  = 8. Why i see uplink 0x00 periodcally on the LHT65 v1.8 firmware =
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415 415  
416 416  * (((
417 417  If a node is registered with multiple servers, it may also cause the "mic mismatch" error.
412 +
413 +
418 418  )))
419 419  
420 420  = 10. Why i got the payload only with "0x00" or "AA~=~="? =
421 421  
422 -* (((
423 -If you are using US915, AU915 and AS923 frequencies.This is normal phenomenon.
424 -)))
418 +* If you are using US915, AU915 and AS923 frequencies.This is normal phenomenon.
425 425  
426 426  (((
427 427  When using the frequency mentioned above, the server sometimes adjusts the rate of the node, because the node defaults to the adaptive rate.
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428 428  )))
429 429  
430 430  (((
431 -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,
425 +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.
432 432  )))
433 433  
434 -(((
435 -and the node will reply to the server after receiving the ADR packet, but the number of payload bytes exceeds the limit,
436 -)))
437 -
438 -(((
439 -so it will send a normal uplink packet, and an additional 00 data packet.
440 -)))
441 -
442 442  * (((
443 443  Solution: Use the decoder to filter out this 00 packet.
444 444  )))
445 445  * (((
446 -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
432 +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]]
433 +
434 +
435 +
447 447  )))
448 448  
449 -(% class="wikigeneratedid" id="H" %)
438 += 11. Why my Dev EUI and APP EUI is 0x000000000000, how to solve? =
439 +
440 +It is possible the keys is erased during upgrading of firmware. and the console output shows below after AT+CFG
441 +
442 +AT+APPKEY=00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
443 +
444 +AT+NWKSKEY=00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
445 +
446 +AT+APPSKEY=00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
447 +
448 +AT+APPEUI=00 00 00 00 00 00 00 00
449 +
450 +
451 +You can get the keys from the box sticker or send mail to Dragino Support to check keys with the provided SN number.
452 +
453 +You can rewrites the keys by running commands in AT Console
454 +
455 +For example：
456 +
457 +AT+APPKEY=85 41 47 20 45 58 28 14 16 82 A0 F0 80 0D DD EE
458 +
459 +AT+NWKSKEY=AA CC B0 20 30 45 37 32 14 1E 14 93 E2 3B 20 11
460 +
461 +AT+APPSKEY=11 23 02 20 30 20 30 60 80 20 20 30 30 20 10 10
462 +
463 +AT+APPEUI=2C 45 47 E3 24 12 23 24
464 +
465 +(Any combination of 16 bit codes can be used）
466 +
467 +
468 +(% class="wikigeneratedid" %)
450 450  
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