Last modified by Xiaoling on 2023/04/20 18:14
<
From version < 16.3 >
edited by Xiaoling
on 2022/07/22 11:41
To version < 19.2 >
edited by Xiaoling
on 2022/09/17 16:42
>
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12 12  * No internet connection.
13 13  * User wants to get data forward in gateway and forward to their server base on MQTT/HTTP, etc. (Combine ABP communication method and [[MQTT forward together>>MQTT Forward Instruction]]).
14 14  
15 +
16 +
15 15  (((
16 16  The basic of this feature is the decoding of (% style="color:red" %)**LoRaWAN ABP End Node**(%%). Requirements:
17 17  )))
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21 21  1. Firmware version for below instruction:**[[(% style="color:purple" %)Since LG02_LG08~~-~~-build-v5.4.1593400722-20200629-1120>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/LPS8/Firmware/Release/]](%%)**
22 22  
23 23  
26 +
27 +
24 24  = 2. How it works =
25 25  
26 26  
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44 44  
45 45  We need to input above keys in LG308 and enable ABP decryption.
46 46  
51 +
47 47  [[image:image-20220527161119-1.png]]
48 48  
54 +
49 49  Input the ABP keys in LG308
50 50  
51 51  
58 +
52 52  == 2.1 Upstream ==
53 53  
54 54  
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55 55  Now when this End Node (Dev Addr=2602111D) send a uplink packet. When this packet arrive LG308, LG308 will decode it and put the decode data on the file /var/iot/channels/2602111D . So we have this data for further process with other applications in LG308.
56 56  
57 57  (((
58 -We can see the log of LG308 to know this packet arrive
65 +We can see the log of LG308 to know this packet arrive.
66 +
67 +
59 59  )))
60 60  
61 61  [[image:image-20220527161149-2.png]]
62 62  
72 +
63 63  LG308 log by "(% style="color:red" %)**logread -f**" (%%)command
64 64  
65 65  
76 +
66 66  The data of End Node is stored in the file /var/iot/channels/2602111D. We can use hexdump command to check it.
67 67  
68 68  (% class="box" %)
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77 77  * **SNR**: 3030 3030 3030 3546 = 0x0000 005F = 95, need to divide 10 so SNR is 9.5
78 78  * **Payload**: 0xcc0c 0b63 0266 017f ff7f ff00
79 79  
91 +
92 +
80 80  (% class="box" %)
81 81  (((
82 82  (% style="color:red" %)**Notice 1**(%%): The data file stored in LG308 for the end node is bin file. If the end node sends ASCII string to gateway, the output will as below:
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87 87  000001c
88 88  )))
89 89  
103 +
90 90  (% class="box" %)
91 91  (((
92 92  (% style="color:red" %)**Notice 2**(%%): The upstream payload length should match the LoRaWAN length requirement (max length depends on Frequency and DR), otherwise the gateway can't decode the payload.
... ... @@ -93,6 +93,7 @@
93 93  )))
94 94  
95 95  
110 +
96 96  === 2.2.1 Decode Method ===
97 97  
98 98  
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162 162  
163 163  
164 164  
180 +
165 165  == 2.2 Downstream ==
166 166  
167 167  
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171 171  
172 172  (% style="color:#037691" %)**dev_addr,imme/time,txt/hex,payload**
173 173  
190 +
174 174  Since fimware > Dragino-v2 lgw-5.4.1608518541 . Support more option
175 175  
176 176  (% style="color:#037691" %)**dev_addr,imme/time,txt/hex,payload,txpw,txbw,SF,frequency,rxwindow**
... ... @@ -195,7 +195,6 @@
195 195  
196 196  
197 197  
198 -
199 199  (% style="color:blue" %)**Completely exmaple:**
200 200  
201 201  * **Old version:** echo 018193F4,imme,hex,0101 > /var/iot/push/test
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203 203  
204 204  
205 205  
222 +(% style="color:#037691" %)**Downstream Frequency:**
206 206  
207 -(% style="color:#037691" %)**Downstream Frequency**
208 -
209 209  The LG308 will use the RX2 window info to send the downstream payload, use the default LoRaWAN settings, as below:
210 210  
211 211  * EU868: 869.525Mhz, DR0(SF12BW125)
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219 219  
220 220  
221 221  
222 -
223 223  (% style="color:#037691" %)**Examples:**
224 224  
225 225  (% class="box" %)
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226 226  (((
227 227  we can use echo command to create files in LG308 for downstream.
228 228  root@dragino-1d25dc:~~# echo 2602111D,time,hex,12345678 > /var/iot/push/test
229 -)))
230 230  
231 -(% class="box" %)
232 -(((
244 +
233 233  **1)** From logread -f of gateway, we can see it has been added as pedning.
234 234  lora_pkt_fwd[4286]: INFO~~ [DNLK]Looking file : test
235 235  lora_pkt_fwd[4286]: INFO~~ [DNLK]devaddr:2602111D, txmode:time, pdfm:hex, size:4, payload1:4Vx,payload_hex:77C1BB90
236 236  lora_pkt_fwd[4286]: INFO~~ [DNLK] DNLINK PENDING!(1 elems).
237 -)))
238 238  
239 -(% class="box" %)
240 -(((
250 +
241 241  **2)** When there is an upstrea from end node, this downstream will be sent and shows:
242 242  lora_pkt_fwd[4286]: INFO: tx_start_delay=1497 (1497.000000) - (1497, bw_delay=0.000000, notch_delay=0.000000)
243 243  lora_pkt_fwd[4286]: [LGWSEND]lgw_send done: count_us=3537314420, freq=923300000, size=17
244 -)))
245 245  
246 -(% class="box" %)
247 -(((
255 +
248 248  **3)** and the end node will got:
249 249  [5764825]~*~*~*~** UpLinkCounter= 98 ~*~*~*~**
250 250  [5764827]TX on freq 905300000 Hz at DR 0
... ... @@ -257,10 +257,8 @@
257 257  Rssi= -41
258 258  Receive data
259 259  (% style="color:#037691" %)**2:12345678**  (%%) ~-~-> Hex
260 -)))
261 261  
262 -(% class="box" %)
263 -(((
269 +
264 264  **4) **If we use the command "echo 2602111D,time,txt,12345678 > /var/iot/push/test" for downstream, the end node will got:
265 265  [5955877]~*~*~*~** UpLinkCounter= 102 ~*~*~*~**
266 266  [5955879]TX on freq 904100000 Hz at DR 0
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276 276  )))
277 277  
278 278  
285 +
279 279  = 3. Example 1: Communicate with LT-22222-L =
280 280  
281 281  
... ... @@ -319,36 +319,46 @@
319 319  #  whether the Device 2 has been changed.//
320 320  )))
321 321  
322 -**~1. Input keys**
323 323  
330 +(% style="color:blue" %)**1. Input keys**
331 +
332 +
324 324  [[image:image-20220527162450-3.png]]
325 325  
326 326  Input Keys in LPS8
327 327  
328 328  
329 -**2. Make sure the LPS8 and LT use the same frequency bands, choose EU868 in this test.**
330 330  
331 -**3. Choose Built-in server**
339 +(% style="color:blue" %)**2. Make sure the LPS8 and LT use the same frequency bands, choose EU868 in this test.**
332 332  
341 +
342 +(% style="color:blue" %)**3. Choose Built-in server**
343 +
344 +
333 333  [[image:image-20220527162518-4.png]]
334 334  
335 335  Choose Built-in server
336 336  
337 337  
338 -**4. Run the script.**
339 339  
340 -[[image:image-20220527162552-5.png]]
351 +(% style="color:blue" %)**4. Run the script.**
341 341  
353 +
354 +[[image:image-20220722115213-2.png]]
355 +
342 342  Run the script
343 343  
344 344  
345 -**5. Output:**
346 346  
347 -[[image:image-20220527162619-6.png]]
360 +(% style="color:blue" %)**5. Output:**
348 348  
362 +
363 +[[image:image-20220722115133-1.png]]
364 +
349 349  Output from LPS8
350 350  
351 351  
368 +
352 352  = 4. Example 2: Communicate to TCP Server =
353 353  
354 354  
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374 374  
375 375  
376 376  
377 -**run socket tool in PC**
394 +(% style="color:blue" %)**run socket tool in PC**
378 378  
396 +
379 379  [[image:image-20220527163028-9.png]]
380 380  
381 381  
... ... @@ -383,8 +383,9 @@
383 383  
384 384  
385 385  
386 -**Input Server address and port**
404 +(% style="color:blue" %)**Input Server address and port**
387 387  
406 +
388 388  [[image:image-20220527163106-10.png]]
389 389  
390 390  Input Server address and port
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391 391  
392 392  
393 393  
394 -**See value receive in socket tool:**
413 +(% style="color:blue" %)**See value receive in socket tool:**
395 395  
415 +
396 396  [[image:image-20220527163144-11.png]]
397 397  
398 398  value receive in socket tool
image-20220722115133-1.png
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