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Last modified by Xiaoling on 2025/05/05 08:51
From version 4.5
edited by Xiaoling
on 2022/05/11 14:46
Change comment: There is no comment for this version
To version 4.3
edited by Xiaoling
on 2022/05/11 14:35
Change comment: There is no comment for this version

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... ... @@ -104,9 +104,7 @@
104 104  
105 105  [[image:https://wiki.dragino.com/images/thumb/3/3a/CN470_FRE_BAND-1.png/600px-CN470_FRE_BAND-1.png||height="205" width="600"]]
106 106  
107 -(((
108 108  CN470 Channels
109 -)))
110 110  
111 111  (((
112 112  If we look at the [[TTN network server frequency plan>>url:https://www.thethingsnetwork.org/docs/lorawan/frequency-plans.html]], we can see the US915 frequency band use the channel 8~~15.So the End Node must work at the same frequency in US915 8~~15 channels for TTN server.
... ... @@ -114,9 +114,7 @@
114 114  
115 115  [[image:https://wiki.dragino.com/images/thumb/9/9a/US915_FRE_BAND-2.png/600px-US915_FRE_BAND-2.png||height="288" width="600"]]
116 116  
117 -(((
118 118  TTN FREQUENCY PLAN
119 -)))
120 120  
121 121  (((
122 122  In dragino end node, user can use AT+CHE command to set what frequencies set the end node will use. The default settings for Dragino end node are preconfigure for TTN server, so use 8~~15 channels, which is **AT+CHE=2**. (AT+CHE=1 for first 8 channels, AT+CHE=2 for second 8 channels.. etc, and AT+CHE=0 for all 72 channels. )
... ... @@ -232,41 +232,35 @@
232 232  
233 233  (% class="box infomessage" %)
234 234  (((
235 - AT+RX2FQ=869525000 ~-~--> The RX2 Window frequency
231 + AT+RX2FQ=869525000 ~-~--> The RX2 Window frequency
236 236  )))
237 237  
238 238  (% class="box infomessage" %)
239 239  (((
240 - AT+RX2DR=3 ~-~--> The RX2 DataRate
236 + AT+RX2DR=3 ~-~--> The RX2 DataRate
241 241  )))
242 242  
243 243  (% class="box infomessage" %)
244 244  (((
245 - AT+RX1DL=1000 ~-~--> Receive Delay 1
241 + AT+RX1DL=1000 ~-~--> Receive Delay 1
246 246  )))
247 247  
248 248  (% class="box infomessage" %)
249 249  (((
250 - AT+RX2DL=2000 ~-~--> Receive Delay 2
246 + AT+RX2DL=2000 ~-~--> Receive Delay 2
251 251  )))
252 252  
253 -(((
254 -**when the device running, we can see below info:**
255 -)))
249 +when the device running, we can see below info:
256 256  
257 -(((
258 -
259 -)))
260 -
261 261  (% class="box" %)
262 262  (((
263 - [12502]~*~*~*~** UpLinkCounter= 0 ~*~*~*~**
264 - [12503]TX on freq 868500000 Hz at DR 0
265 - [13992]txDone
266 - [15022]RX on freq 868500000 Hz at DR 0     ~-~-> RX1 window open at frequency: 868500000, DR0, after 15022-13992= 1030ms of txdone
267 - [15222]rxTimeOut                           ~-~-> no packet arrive in RX1 window. (duration: 200ms)
268 - [15987]RX on freq 869525000 Hz at DR 3     ~-~-> RX2 window open at frequency: 869525000, DR3, after 15987-13992= 1995ms of txdone
269 - [16027]rxTimeOut                           ~-~-> no packet arrive in RX2 window. (duration: 40 ms)
253 +[12502]~*~*~*~** UpLinkCounter= 0 ~*~*~*~**
254 +[12503]TX on freq 868500000 Hz at DR 0
255 +[13992]txDone
256 +[15022]RX on freq 868500000 Hz at DR 0     ~-~-> RX1 window open at frequency: 868500000, DR0, after 15022-13992= 1030ms of txdone
257 +[15222]rxTimeOut                           ~-~-> no packet arrive in RX1 window. (duration: 200ms)
258 +[15987]RX on freq 869525000 Hz at DR 3     ~-~-> RX2 window open at frequency: 869525000, DR3, after 15987-13992= 1995ms of txdone
259 +[16027]rxTimeOut                           ~-~-> no packet arrive in RX2 window. (duration: 40 ms)
270 270  )))
271 271  
272 272  (((
... ... @@ -273,22 +273,19 @@
273 273  
274 274  )))
275 275  
276 -(((
277 -**Another message:**
278 -)))
266 +{{{Another message:
267 +[12502]***** UpLinkCounter= 0 *****
268 +[12503]TX on freq 868100000 Hz at DR 0
269 +[13992]txDone
270 +[15022]RX on freq 868100000 Hz at DR 0
271 +[15222]rxTimeOut
272 +[15987]RX on freq 869525000 Hz at DR 3
273 +[16185]rxDone --> We have got the downstream packet.
274 +Rssi= -64
275 +Receive data
276 +1:0012345678
277 +}}}
279 279  
280 -
281 - [12502]~*~*~*~** UpLinkCounter= 0 ~*~*~*~**
282 - [12503]TX on freq 868100000 Hz at DR 0
283 - [13992]txDone
284 - [15022]RX on freq 868100000 Hz at DR 0
285 - [15222]rxTimeOut
286 - [15987]RX on freq 869525000 Hz at DR 3
287 - [16185]rxDone                              ~-~-> We have got the downstream packet.
288 - Rssi= -64
289 - Receive data
290 - 1:0012345678
291 -
292 292  == 5.3 If problem doesn’t solve ==
293 293  
294 294  **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:**
... ... @@ -300,25 +300,14 @@
300 300  
301 301  = 6. Downlink Issue ~-~- Packet REJECTED, unsupported frequency =
302 302  
303 -(((
304 304  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.
305 -)))
306 306  
307 -(((
308 -
309 -)))
310 -
311 -(((
312 312  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:
313 -)))
314 314  
315 -(((
316 -Sat Nov 21 08:04:17 2020 daemon.info lora_pkt_fwd[1680]: ERROR~~ Packet REJECTED, unsupported frequency - 923200000 (min:865000000,max:867000000)
317 -)))
294 +{{{Sat Nov 21 08:04:17 2020 daemon.info lora_pkt_fwd[1680]: ERROR~ Packet REJECTED, unsupported frequency - 923200000 (min:865000000,max:867000000)
295 +}}}
318 318  
319 -(((
320 320  In this case, please double check the gateway frequency and the server frequency band.
321 -)))
322 322  
323 323  
324 324  = 7. Decrypt a LoRaWAN Packet =