Summary

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Author

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1		-XWiki.Xiaoling
	1	+XWiki.Edwin

Content

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16	16	* End Node traffic (from server UI) to shows end node activity in server. (Normaly possible)
17	17	* End Node Keys screen shot shows in end node and server. so we can check if the keys are correct. (In most case, we found keys doesn't match, especially APP EUI)
18	18
19		-**~1. End Device Join Screen shot, we can check:**
20	20
	20	+(% style="color:blue" %)**1. End Device Join Screen shot, we can check:**
	21	+
21	21	* If the device is sending join request to server?
22	22	* What frequency the device is sending?
23	23
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26	26	Console Output from End device to see the transmit frequency
27	27
28	28
29		-**2. Gateway packet traffic in gateway web or ssh. we can check:**
30	30
	31	+(% style="color:blue" %)**2. Gateway packet traffic in gateway web or ssh. we can check:**
	32	+
31	31	* If the gateway receive the Join request packet from sensor? (If this fail, check if the gateway and sensor works on the match frequency)
32	32	* If the gateway gets the Join Accept message from server and transmit it via LoRa?
33	33
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36	36	Console Output from Gateway to see packets between end node and server.
37	37
38	38
39		-**3. Gateway Traffic Page in LoRaWAN Server**
	41	+(% style="color:blue" %)**3. Gateway Traffic Page in LoRaWAN Server**
40	40
41	41	* If the Join Request packet arrive the gateway traffic in server? If not, check the internet connection and gateway LoRaWAN server settings.
42	42	* If the server send back a Join Accept for the Join Request? if not, check if the keys from the device match the keys you put in the server, or try to choose a different server route for this end device.
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47	47	The Traffic for the End node in the server, use TTN as example
48	48
49	49
50		-**4. Data Page in LoRaWAN server**
	52	+(% style="color:blue" %)**4. Data Page in LoRaWAN server**
51	51
52	52	* 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.
53	53
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60	60	Check if OTAA Keys match the keys in device
61	61
62	62
	65	+
63	63	= 2. Notice of US915/CN470/AU915 Frequency band =
64	64
65	65
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131	131	)))
132	132
133	133
	137	+
134	134	= 3. Why i see data lost/unperiocially uplink data? Even the signal strength is good =
135	135
136	136
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153	153	)))
154	154
155	155
	160	+
156	156	= 4. Transmision on ABP Mode =
157	157
158	158
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181	181	Disable Frame Counter Check in ABP Mode
182	182
183	183
	189	+
184	184	= 5. Downstream Debug =
185	185
186	186	== 5.1 How it work ==
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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
	214	+
	215	+
208	208	== 5.2 See Debug Info ==
209	209
210	210
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238	238	)))
239	239
240	240
	249	+
241	241	(((
242	242	(% style="color:blue" %)**For LoRaWAN Gateway**
243	243	)))
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253	253	)))
254	254
255	255
	265	+
256	256	(((
257	257	(% style="color:blue" %)**For End Node**
258	258	)))
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267	267	(% style="color:#037691" %)**AT+RX1DL=1000**       (%%) ** ~-~-->**  Receive Delay 1
268	268	(% style="color:#037691" %)**AT+RX2DL=2000**       (%%) **~-~--> ** Receive Delay 2
269	269
	280	+
270	270
271	271	)))
272	272
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284	284
285	285	(((
286	286
	298	+
	299	+
287	287	)))
288	288
289	289	(((
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302	302	1:0012345678}}}
303	303
304	304
	318	+
305	305	== 5.3 If problem doesn't solve ==
306	306
307	307
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314	314
315	315
316	316
317		-
318	318	= 6. Downlink Issue ~-~- Packet REJECTED, unsupported frequency =
319	319
320	320
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341	341	)))
342	342
343	343
	357	+
344	344	= 7. Decrypt a LoRaWAN Packet =
345	345
346	346
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350	350	**Change to fix frequency:  AT+CHS=904900000**
351	351	**Change to fix DR:  AT+DR=0**
352	352
	367	+
353	353	[[image:image-20220526165525-16.png]]
354	354
355	355
	371	+
356	356	(% style="color:blue" %)**2. In LG02 , configure to receive above message**
357	357
358	358	[[image:image-20220526165612-17.png]]
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363	363	[[image:image-20220526171112-21.png]]
364	364
365	365
	382	+
366	366	(% style="color:blue" %)**3. Decode the info in web**
367	367
368	368	[[https:~~/~~/lorawan-packet-decoder-0ta6puiniaut.runkit.sh>>url:https://lorawan-packet-decoder-0ta6puiniaut.runkit.sh/]]
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385	385	)))
386	386
387	387
	405	+
388	388	= 8. Why i see uplink 0x00 periodcally on the LHT65 v1.8 firmware =
389	389
390	390
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391	391	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.
392	392
393	393
	412	+
394	394	= 9. Why do I see a "MIC Mismatch" error message from the server? =
395	395
396	396
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425	425	= 10. Why i got the payload only with "0x00" or "AA~=~="? =
426	426
427	427
428		-* If you are using US915, AU915 and AS923 frequencies.This is normal phenomenon.
	447	+* If you are using US915, AU915 or AS923 frequencies.It is possible because: .
429	429
430		-(((
431		-When using the frequency mentioned above, the server sometimes adjusts the rate of the node, because the node defaults to the adaptive rate.
432		-)))
	449	+When using the frequency mentioned above, the server sometimes adjusts the Data Rate (DR) of the node, because the end node has Adaptive Data Rate (ADR) Enabled.
433	433
434		-(((
435	435	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.
436		-)))
437	437
438		-* (((
439	439	Solution: Use the decoder to filter out this 00 packet.
440		-)))
441		-* (((
	454	+
442	442	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]]
443	443
444	444
445	445
446		-
447		-)))
448		-
449	449	= 11. Why my Dev EUI and APP EUI is 0x000000000000, how to solve? =
450	450
451	451
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507	507	(Any combination of 16 bit codes can be used）
508	508
509	509
	520	+
510	510	= 12. I set my device is LoRaWAN Class C mode, why i still see Class A after boot? =
511	511	)))
512	512