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Last modified by Xiaoling on 2025/05/05 08:51
From version 4.6
edited by Xiaoling
on 2022/05/11 14:52
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. )
... ... @@ -195,23 +195,15 @@
195 195  
196 196  == 5.2 See Debug Info ==
197 197  
198 -(((
199 199  **For LoRaWAN Server**
200 -)))
201 201  
202 -(((
203 203  We can check if there is downlink message for this end node, use TTN for example:
204 -)))
205 205  
206 -(((
207 207  Configure a downstream to the end device
208 -)))
209 209  
210 210  [[image:https://wiki.dragino.com/images/thumb/8/82/Downstream_debug_1.png/600px-Downstream_debug_1.png||height="217" width="600"]]
211 211  
212 -(((
213 213  Set a downstream in TTN and see it is sent
214 -)))
215 215  
216 216  
217 217  (((
... ... @@ -220,14 +220,10 @@
220 220  
221 221  [[image:https://wiki.dragino.com/images/thumb/d/dc/Downstream_debug_2.png/600px-Downstream_debug_2.png||height="245" width="600"]]
222 222  
223 -(((
224 224  Gateway Traffic can see this downstream info
225 -)))
226 226  
227 227  
228 -(((
229 229  **For LoRaWAN Gateway**
230 -)))
231 231  
232 232  (((
233 233  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:
... ... @@ -235,69 +235,63 @@
235 235  
236 236  [[image:https://wiki.dragino.com/images/thumb/2/21/Downstream_debug_3.png/600px-Downstream_debug_3.png||height="195" width="600"]]
237 237  
238 -(((
239 239  Gateway Sent out this packet
240 -)))
241 241  
242 242  
243 -(((
244 244  **For End Node**
245 -)))
246 246  
247 247  we can use AT Command (AT+CFG) to check the RX1 configure and RX2 configure. as below:
248 248  
249 249  (% class="box infomessage" %)
250 250  (((
251 - AT+RX2FQ=869525000 ~-~--> The RX2 Window frequency
231 + AT+RX2FQ=869525000 ~-~--> The RX2 Window frequency
252 252  )))
253 253  
254 254  (% class="box infomessage" %)
255 255  (((
256 - AT+RX2DR=3 ~-~--> The RX2 DataRate
236 + AT+RX2DR=3 ~-~--> The RX2 DataRate
257 257  )))
258 258  
259 259  (% class="box infomessage" %)
260 260  (((
261 - AT+RX1DL=1000 ~-~--> Receive Delay 1
241 + AT+RX1DL=1000 ~-~--> Receive Delay 1
262 262  )))
263 263  
264 264  (% class="box infomessage" %)
265 265  (((
266 - AT+RX2DL=2000 ~-~--> Receive Delay 2
246 + AT+RX2DL=2000 ~-~--> Receive Delay 2
267 267  )))
268 268  
269 -**when the device running, we can see below info:**
249 +when the device running, we can see below info:
270 270  
251 +(% class="box" %)
271 271  (((
272 -
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)
273 273  )))
274 274  
275 -{{{ [12502]***** UpLinkCounter= 0 *****
276 - [12503]TX on freq 868500000 Hz at DR 0
277 - [13992]txDone
278 - [15022]RX on freq 868500000 Hz at DR 0 --> RX1 window open at frequency: 868500000, DR0, after 15022-13992= 1030ms of txdone
279 - [15222]rxTimeOut --> no packet arrive in RX1 window. (duration: 200ms)
280 - [15987]RX on freq 869525000 Hz at DR 3 --> RX2 window open at frequency: 869525000, DR3, after 15987-13992= 1995ms of txdone
281 - [16027]rxTimeOut --> no packet arrive in RX2 window. (duration: 40 ms)}}}
282 -
283 283  (((
284 284  
285 285  )))
286 286  
287 -**Another message:**
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 +}}}
288 288  
289 -{{{
290 - [12502]***** UpLinkCounter= 0 *****
291 - [12503]TX on freq 868100000 Hz at DR 0
292 - [13992]txDone
293 - [15022]RX on freq 868100000 Hz at DR 0
294 - [15222]rxTimeOut
295 - [15987]RX on freq 869525000 Hz at DR 3
296 - [16185]rxDone --> We have got the downstream packet.
297 - Rssi= -64
298 - Receive data
299 - 1:0012345678}}}
300 -
301 301  == 5.3 If problem doesn’t solve ==
302 302  
303 303  **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:**
... ... @@ -309,29 +309,14 @@
309 309  
310 310  = 6. Downlink Issue ~-~- Packet REJECTED, unsupported frequency =
311 311  
312 -(((
313 313  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.
314 -)))
315 315  
316 -(((
317 -
318 -)))
319 -
320 -(((
321 321  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:
322 -)))
323 323  
324 -(((
325 -Sat Nov 21 08:04:17 2020 daemon.info lora_pkt_fwd[1680]: ERROR~~ Packet REJECTED, unsupported frequency - 923200000 (min:865000000,max:867000000)
326 -)))
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 +}}}
327 327  
328 -(((
329 -
330 -)))
331 -
332 -(((
333 333  In this case, please double check the gateway frequency and the server frequency band.
334 -)))
335 335  
336 336  
337 337  = 7. Decrypt a LoRaWAN Packet =