Changes for page LoRaWAN Communication Debug

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 < 4.6 >

edited by Xiaoling
on 2022/05/11 14:52

Change comment: There is no comment for this version

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@@ -244,64 +244,59 @@
  **For End Node**
  )))
--(((
  we can use AT Command (AT+CFG) to check the RX1 configure and RX2 configure. as below:
--)))
  (% class="box infomessage" %)
  (((
--AT+RX2FQ=869525000 ~-~--> The RX2 Window frequency
++    AT+RX2FQ=869525000 ~-~--> The RX2 Window frequency
  )))
  (% class="box infomessage" %)
  (((
--AT+RX2DR=3 ~-~--> The RX2 DataRate
++    AT+RX2DR=3 ~-~--> The RX2 DataRate
  )))
  (% class="box infomessage" %)
  (((
-- AT+RX1DL=1000 ~-~--> Receive Delay 1
++    AT+RX1DL=1000 ~-~--> Receive Delay 1
  )))
  (% class="box infomessage" %)
  (((
-- AT+RX2DL=2000 ~-~--> Receive Delay 2
++    AT+RX2DL=2000 ~-~--> Receive Delay 2
  )))
--(((
  **when the device running, we can see below info:**
--)))
  (((
  )))
--{{{ [12502]***** UpLinkCounter= 0 *****
-- [12503]TX on freq 868500000 Hz at DR 0
-- [13992]txDone
-- [15022]RX on freq 868500000 Hz at DR 0     --> RX1 window open at frequency: 868500000, DR0, after 15022-13992= 1030ms of txdone
-- [15222]rxTimeOut                           --> no packet arrive in RX1 window. (duration: 200ms)
-- [15987]RX on freq 869525000 Hz at DR 3     --> RX2 window open at frequency: 869525000, DR3, after 15987-13992= 1995ms of txdone
-- [16027]rxTimeOut                           --> no packet arrive in RX2 window. (duration: 40 ms)}}}
++{{{   [12502]***** UpLinkCounter= 0 *****
++   [12503]TX on freq 868500000 Hz at DR 0
++   [13992]txDone
++   [15022]RX on freq 868500000 Hz at DR 0     --> RX1 window open at frequency: 868500000, DR0, after 15022-13992= 1030ms of txdone
++   [15222]rxTimeOut                           --> no packet arrive in RX1 window. (duration: 200ms)
++   [15987]RX on freq 869525000 Hz at DR 3     --> RX2 window open at frequency: 869525000, DR3, after 15987-13992= 1995ms of txdone
++   [16027]rxTimeOut                           --> no packet arrive in RX2 window. (duration: 40 ms)}}}
  (((
  )))
--(((
  **Another message:**
--)))
--{{{ [12502]***** UpLinkCounter= 0 *****
-- [12503]TX on freq 868100000 Hz at DR 0
-- [13992]txDone
-- [15022]RX on freq 868100000 Hz at DR 0
-- [15222]rxTimeOut
-- [15987]RX on freq 869525000 Hz at DR 3
-- [16185]rxDone                              --> We have got the downstream packet.
-- Rssi= -64
-- Receive data
-- 1:0012345678}}}
++{{{
++   [12502]***** UpLinkCounter= 0 *****
++   [12503]TX on freq 868100000 Hz at DR 0
++   [13992]txDone
++   [15022]RX on freq 868100000 Hz at DR 0
++   [15222]rxTimeOut
++   [15987]RX on freq 869525000 Hz at DR 3
++   [16185]rxDone                              --> We have got the downstream packet.
++   Rssi= -64
++   Receive data
++   1:0012345678}}}
  == 5.3 If problem doesn’t solve ==
@@ -326,7 +326,9 @@
  So if the LoRaWAN server is an AS923 server which ask the gateway to transmit at 923.2Mhz frequency, but the gateway is IN868 frequency band (support 865~~867Mhz to transmit). In the gateway log it will show something like below:
  )))
--{{{Sat Nov 21 08:04:17 2020 daemon.info lora_pkt_fwd[1680]: ERROR~ Packet REJECTED, unsupported frequency - 923200000 (min:865000000,max:867000000)}}}
++(((
++Sat Nov 21 08:04:17 2020 daemon.info lora_pkt_fwd[1680]: ERROR~~ Packet REJECTED, unsupported frequency - 923200000 (min:865000000,max:867000000)
++)))
  (((
@@ -378,9 +378,7 @@
  AT+APPSKEY=00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 11 (End Node App Session Key)
--(((
  [[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]]
--)))
  [[image:https://wiki.dragino.com/images/7/77/Decrypt_a_LoRaWAN_Packet4.png||alt="Decrypt a LoRaWAN Packet4.png" height="390" width="558"]]
@@ -393,58 +393,32 @@
  = 9. Why do I see a "MIC Mismatch" error message from the server? =
--(((
 )If the user receives a "MIC Mismatch" message after registering the node on the server.
--)))
--(((
  It is likely that the user filled in the wrong APPKEY when registering the node. Many users fill in "APPSKEY".
--)))
--* (((
--Please note the distinction between "APPKEY" and "APPSKEY".
--)))
++* Please note the distinction between "APPKEY" and "APPSKEY".
--(((
 ）If the node works on the server for a period of time, the device stops working and receives a "MIC Mismatch" message.
--)))
--(((
  The user needs a USB-TTL adapter to connect the serial port to modify the node APPKEY.
--)))
--* (((
--If a node is registered with multiple servers, it may also cause the "mic mismatch" error.
--)))
++* If a node is registered with multiple servers, it may also cause the "mic mismatch" error.
  = 10. Why i got the payload only with "0x00" or "AA~=~="? =
--* (((
--If you are using US915, AU915 and AS923 frequencies.This is normal phenomenon.
--)))
++* If you are using US915, AU915 and AS923 frequencies.This is normal phenomenon.
--(((
  When using the frequency mentioned above, the server sometimes adjusts the rate of the node, because the node defaults to the adaptive rate.
--)))
--(((
  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.
--)))
--* (((
--Solution: Use the decoder to filter out this 00 packet.
--)))
--* (((
--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
--)))
++* Solution: Use the decoder to filter out this 00 packet.
++* 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
  (% class="wikigeneratedid" id="H" %)

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