Changes for page LoRaWAN Communication Debug
Last modified by Edwin Chen on 2025/01/29 20:30
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... ... @@ -205,6 +205,7 @@ 205 205 * This packet must match the frequency of the RX1 or RX2 window. 206 206 * This packet must match the DataRate of RX1(RX1DR) or RX2 (RX2DR). (% style="color:red" %)**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.** 207 207 208 + 208 208 == 5.2 See Debug Info == 209 209 210 210 ... ... @@ -262,15 +262,20 @@ 262 262 ))) 263 263 264 264 ((( 265 -(% style="color:#037691" %)**AT+RX2FQ=869525000** (%%) **~-~-->** The RX2 Window frequency 266 -(% style="color:#037691" %)**AT+RX2DR=3** (%%) **~-~-->** The RX2 DataRate 267 -(% style="color:#037691" %)**AT+RX1DL=1000** (%%) ** ~-~-->** Receive Delay 1 268 -(% style="color:#037691" %)**AT+RX2DL=2000** (%%) **~-~--> ** Receive Delay 2 269 - 270 270 271 271 ))) 272 272 273 273 ((( 270 +(% class="box infomessage" %) 271 +((( 272 +AT+RX2FQ=869525000 ~-~--> The RX2 Window frequency 273 +AT+RX2DR=3 ~-~--> The RX2 DataRate 274 +AT+RX1DL=1000 ~-~--> Receive Delay 1 275 +AT+RX2DL=2000 ~-~--> Receive Delay 2 276 +))) 277 +))) 278 + 279 +((( 274 274 (% style="color:blue" %)**when the device running, we can see below info:** 275 275 ))) 276 276 ... ... @@ -302,9 +302,8 @@ 302 302 1:0012345678}}} 303 303 304 304 305 -== 5.3 If problem doesn 't solve ==311 +== 5.3 If problem doesn’t solve == 306 306 307 - 308 308 (% 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:** 309 309 310 310 * End node console to show the transmit freuqency and DR. ... ... @@ -312,12 +312,8 @@ 312 312 * Gateway traffic (from server UI) to shows the data exchange between gateway and server. 313 313 * End Node traffic (from server UI) to shows end node activity in server. 314 314 315 - 316 - 317 - 318 318 = 6. Downlink Issue ~-~- Packet REJECTED, unsupported frequency = 319 319 320 - 321 321 ((( 322 322 In LoRaWAN, the gatewat will use the frequency specify by the server to transmit a packet as downlink purpose. Each Frequency band has different downlink frequency. and the gateway has a frequency range limited to transmit downlink. 323 323 ))) ... ... @@ -343,18 +343,19 @@ 343 343 344 344 = 7. Decrypt a LoRaWAN Packet = 345 345 347 +~1. LHT65 End device configure: 346 346 347 -(% style="color:blue" %)**1. LHT65 End device configure:** 349 +(% class="box infomessage" %) 350 +((( 351 +**Change to ABP Mode: AT+NJM=0** 352 +**Change to fix frequency: AT+CHS=904900000** 353 +**Change to fix DR: AT+DR=0** 354 +))) 348 348 349 -**Change to ABP Mode: AT+NJM=0** 350 -**Change to fix frequency: AT+CHS=904900000** 351 -**Change to fix DR: AT+DR=0** 352 - 353 - 354 354 [[image:image-20220526165525-16.png]] 355 355 356 356 357 - (% style="color:blue" %)**2. In LG02 , configure to receive above message**359 +2. In LG02 , configure to receive above message 358 358 359 359 [[image:image-20220526165612-17.png]] 360 360 ... ... @@ -364,7 +364,7 @@ 364 364 [[image:image-20220526171112-21.png]] 365 365 366 366 367 - (% style="color:blue" %)**3. Decode the info in web**369 +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/]] 370 370 ... ... @@ -376,7 +376,6 @@ 376 376 377 377 AT+APPSKEY=00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 11 (End Node App Session Key) 378 378 379 - 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]] 381 381 382 382 [[image:image-20220526171029-20.png]] ... ... @@ -388,15 +388,13 @@ 388 388 389 389 = 8. Why i see uplink 0x00 periodcally on the LHT65 v1.8 firmware = 390 390 391 - 392 392 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. 393 393 394 394 395 395 = 9. Why do I see a "MIC Mismatch" error message from the server? = 396 396 397 - 398 398 ((( 399 -1) 398 +1)If the user receives a "MIC Mismatch" message after registering the node on the server. 400 400 ))) 401 401 402 402 ((( ... ... @@ -418,14 +418,11 @@ 418 418 * ((( 419 419 If a node is registered with multiple servers, it may also cause the "mic mismatch" error. 420 420 421 - 422 - 423 423 424 424 ))) 425 425 426 426 = 10. Why i got the payload only with "0x00" or "AA~=~="? = 427 427 428 - 429 429 * If you are using US915, AU915 and AS923 frequencies.This is normal phenomenon. 430 430 431 431 ((( ... ... @@ -442,14 +442,11 @@ 442 442 * ((( 443 443 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]] 444 444 445 - 446 - 447 447 448 448 ))) 449 449 450 450 = 11. Why my Dev EUI and APP EUI is 0x000000000000, how to solve? = 451 451 452 - 453 453 ((( 454 454 It is possible the keys is erased during upgrading of firmware. and the console output shows below after AT+CFG 455 455 ))) ... ... @@ -480,8 +480,6 @@ 480 480 481 481 ((( 482 482 You can rewrites the keys by running commands in AT Console 483 - 484 - 485 485 ))) 486 486 487 487 (((