Changes for page LoRaWAN Communication Debug
Last modified by Edwin Chen on 2025/01/29 20:30
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... ... @@ -26,7 +26,7 @@ 26 26 27 27 * What frequency the device is sending? 28 28 29 -[[image:image-2024012 9142147-2.png||height="736" width="964"]]29 +[[image:image-20240123182345-1.png||height="605" width="946"]] 30 30 31 31 Console Output from End device to see the transmit frequency. 32 32 ... ... @@ -37,7 +37,7 @@ 37 37 38 38 * If the gateway gets the Join Accept message from server and transmit it via LoRa? 39 39 40 -[[image:image-202 40129151608-6.jpeg||height="725" width="1256"]]40 +[[image:image-20220526163608-2.png]] 41 41 42 42 Console Output from Gateway to see packets between end node and server. 43 43 ... ... @@ -50,7 +50,7 @@ 50 50 51 51 * If the Join Accept message are in correct frequency? If you set the server to use US915 band, and your end node and gateway is EU868, you will see the Join Accept message are in US915 band so no possible to Join success. 52 52 53 -[[image:image-202 40129150821-5.jpeg||height="522" width="1264"]]53 +[[image:image-20220526163633-3.png]] 54 54 55 55 The Traffic for the End node in the server, use TTN as example. 56 56 ... ... @@ -59,12 +59,12 @@ 59 59 60 60 * If this data page shows the Join Request message from the end node? If not, most properly you have wrong settings in the keys. Keys in the server doesn't match the keys in End Node. 61 61 62 -[[image:image-2024012 9142557-3.png||height="488" width="1267"]]62 +[[image:image-20240123150720-1.png||height="459" width="1182"]] 63 63 64 64 The data for the end device set in server 65 65 66 66 67 -[[image:image-2024012 9142631-4.png||height="637" width="1256"]]67 +[[image:image-20240123150943-2.png||height="556" width="1179"]] 68 68 69 69 Check if OTAA Keys match the keys in device. 70 70 ... ... @@ -213,6 +213,7 @@ 213 213 214 214 * 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.** 215 215 216 + 216 216 == 5.2 See Debug Info == 217 217 218 218 ... ... @@ -226,26 +226,23 @@ 226 226 227 227 ((( 228 228 Configure a downlink to the end device 229 - 230 -[[image:image-20240129152412-8.png||height="486" width="1206"]] 231 231 ))) 232 232 232 +[[image:image-20240123163307-7.png||height="330" width="1125"]] 233 233 234 234 ((( 235 235 Set a downstream in TTN and see it is sent 236 236 ))) 237 237 238 -(% style="color:red" %)**Note: After the downlink command is successfully sent from the platform to the node, the downlink command is executed only after the platform receives the next uplink package from the node.** 239 239 240 - 241 241 ((( 242 -This down linkinfo will then pass to the gateway downlinklist. and the DR which is used (SF7BW500) in US915is DR5.240 +This downstream info will then pass to the gateway downstream list. and include the DR which is used (SF9BW125) in EU868 is DR3 243 243 ))) 244 244 245 -[[image:image-202 40129152049-7.png||height="463" width="1166"]]243 +[[image:image-20220526164650-13.png]] 246 246 247 247 ((( 248 -Gateway Traffic can see this down linkinfo246 +Gateway Traffic can see this downstream info 249 249 ))) 250 250 251 251 ... ... @@ -255,10 +255,10 @@ 255 255 ))) 256 256 257 257 ((( 258 -When the down linkpacket appear on the traffic of Gateway page. The LoRaWAN gateway can get it from LoRaWAN server and transmit it. In Dragino Gateway, this can be checked by running "logread -f" in the SSH console. and see below:256 +When the downstream packet appear on the traffic of Gateway page. The LoRaWAN gateway can get it from LoRaWAN server and transmit it. In Dragion Gateway, this can be checked by runinng "logread -f" in the SSH console. and see below: 259 259 ))) 260 260 261 -[[image:image-202 40129154321-9.png]]259 +[[image:image-20220526164734-14.png]] 262 262 263 263 ((( 264 264 Gateway Sent out this packet ... ... @@ -335,7 +335,7 @@ 335 335 336 336 337 337 ((( 338 -In LoRaWAN, the gatewa ywill 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.336 +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. 339 339 ))) 340 340 341 341 ((( ... ... @@ -360,67 +360,52 @@ 360 360 = 7. Decrypt a LoRaWAN Packet = 361 361 362 362 363 -(% style="color:blue" %)**1. LHT65 NEnd device configure:**361 +(% style="color:blue" %)**1. LHT65 End device configure:** 364 364 365 365 **Change to ABP Mode: AT+NJM=0** 366 366 367 -**Change to fix frequency: AT+CHE=1**365 +**Change to fix frequency: AT+CHS=904900000** 368 368 367 +**Change to fix DR: AT+DR=0** 369 369 370 -**AT+CFG(Print configuration):** 371 371 372 -[[image:image-202 40129170603-7.png||height="697" width="545"]][[image:image-20240129163741-3.png||height="694" width="565"]]370 +[[image:image-20220526165525-16.png]] 373 373 374 374 375 375 376 -** Configuration:**374 +(% style="color:blue" %)**2. In LG02 , configure to receive above message** 377 377 378 -[[image:image-202 40129164219-4.png||height="612" width="440"]]376 +[[image:image-20220526165612-17.png]] 379 379 380 380 379 +In LG02 console, we can see the hex receive are: 381 381 382 - (% style="color:blue" %)**2. In LPS8-v2, configureto receive abovemessage**381 +[[image:image-20220526171112-21.png]] 383 383 384 -[[image:image-20240129164326-5.png||height="506" width="1114"]] 385 385 386 386 387 - InLPS8-v2console,wecan seetheBase64receiveare:385 +(% style="color:blue" %)**3. Decode the info in web** 388 388 389 -[[ image:image-20240129170137-6.png||height="459"width="1116"]]387 +[[https:~~/~~/lorawan-packet-decoder-0ta6puiniaut.runkit.sh>>url:https://lorawan-packet-decoder-0ta6puiniaut.runkit.sh/]] 390 390 389 +Need these three fields: 391 391 391 +LoRa packet hex format: 40c1190126800100024926272bf18bbb6341584e27e23245 (from LG02) 392 392 393 - (% style="color:blue"%)**3.Decodetheinfo inSecureCRT**393 +AT+NWKSKEY=00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 11 (End node Network Session Key) 394 394 395 - [[SecureCRT-Therock-solidTelnetandSSHclientforWindows,Mac,andLinux(vandyke.com)>>url:https://www.vandyke.com/products/securecrt/]]395 +AT+APPSKEY=00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 11 (End Node App Session Key) 396 396 397 -LoRa packet Base64 format: QP~/~/~/~/+AFQACZv8Hjmc8gFTAkhMzU+75 (from LPS8-v2) 398 398 399 - Thenthe instructionsand formatparsedin SecureCRTare:./node_modules/.bin/lora-packet-decode~-~-base64QP~/~/~/~/+AFQACZv8Hjmc8gFTAkhMzU+75398 +[[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]] 400 400 400 +[[image:image-20220526171029-20.png]] 401 401 402 -**Step1: In the SecureCRT access gateway control interface, enter the command to download the parsing package: npm install lora-packet.** 402 +((( 403 + The FRMPayload is the device payload. 404 +))) 403 403 404 -[[image:image-20240129173810-9.png||height="389" width="1070"]] 405 405 406 -[[image:image-20240129173932-10.png||height="350" width="1084"]] 407 - 408 -[[image:image-20240129174125-11.png||height="338" width="1078"]] 409 - 410 - 411 -**Step2: Parse the raw data from the gateway.** 412 - 413 -[[image:image-20240129174948-14.png]] 414 - 415 - 416 -[[image:image-20240129175037-15.png||height="619" width="1144"]] 417 - 418 - 419 - 420 - 421 - 422 - 423 - 424 424 = 8. Why I see uplink 0x00 periodically on the LHT65 v1.8 firmware = 425 425 426 426 ... ... @@ -465,7 +465,7 @@ 465 465 4)We have had cases where it was automatically fixed the next day despite no manual changes, probably a server side issue 466 466 467 467 468 -= 10. Why Igot the payload only with "0x00" or "AA~=~="? =451 += 10. Why i got the payload only with "0x00" or "AA~=~="? = 469 469 470 470 471 471 (% style="color:blue" %)**Why sensor sends 0x00?** ... ... @@ -560,7 +560,7 @@ 560 560 (Any combination of 16 bit codes can be used) 561 561 562 562 563 -= 12. I set my device is LoRaWAN Class C mode, why Istill see Class A after boot? =546 += 12. I set my device is LoRaWAN Class C mode, why i still see Class A after boot? = 564 564 ))) 565 565 566 566 ... ... @@ -591,3 +591,6 @@ 591 591 592 592 593 593 [[image:image-20221215223215-1.png||height="584" width="1280"]] 577 + 578 +(% class="wikigeneratedid" %) 579 +
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