Last modified by Xiaoling on 2023/04/20 18:14
<
From version < 16.8 >
edited by Xiaoling
on 2022/07/22 11:46
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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46 46  
47 47  We need to input above keys in LG308 and enable ABP decryption.
48 48  
51 +
49 49  [[image:image-20220527161119-1.png]]
50 50  
54 +
51 51  Input the ABP keys in LG308
52 52  
53 53  
58 +
54 54  == 2.1 Upstream ==
55 55  
56 56  
... ... @@ -57,14 +57,18 @@
57 57  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.
58 58  
59 59  (((
60 -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 +
61 61  )))
62 62  
63 63  [[image:image-20220527161149-2.png]]
64 64  
72 +
65 65  LG308 log by "(% style="color:red" %)**logread -f**" (%%)command
66 66  
67 67  
76 +
68 68  The data of End Node is stored in the file /var/iot/channels/2602111D. We can use hexdump command to check it.
69 69  
70 70  (% class="box" %)
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79 79  * **SNR**: 3030 3030 3030 3546 = 0x0000 005F = 95, need to divide 10 so SNR is 9.5
80 80  * **Payload**: 0xcc0c 0b63 0266 017f ff7f ff00
81 81  
91 +
92 +
82 82  (% class="box" %)
83 83  (((
84 84  (% 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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89 89  000001c
90 90  )))
91 91  
103 +
92 92  (% class="box" %)
93 93  (((
94 94  (% 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.
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95 95  )))
96 96  
97 97  
110 +
98 98  === 2.2.1 Decode Method ===
99 99  
100 100  
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162 162  * the last line return is what will be used for MQTT
163 163  * User can use other language ,not limited to Lua, just make sure the return is what you want to send.
164 164  
178 +
179 +
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**
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194 194  * **rxwindow:** transmit on Rx1Window or Rx2Window.
195 195  
196 196  
214 +
197 197  (% style="color:blue" %)**Completely exmaple:**
198 198  
199 199  * **Old version:** echo 018193F4,imme,hex,0101 > /var/iot/push/test
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200 200  * **New version:** echo 018193F4,imme,hex,0101,20,1,SF12,923300000,2 > /var/iot/push/test
201 201  
202 202  
203 -(% style="color:#037691" %)**Downstream Frequency**
204 204  
222 +(% style="color:#037691" %)**Downstream Frequency:**
223 +
205 205  The LG308 will use the RX2 window info to send the downstream payload, use the default LoRaWAN settings, as below:
206 206  
207 207  * EU868: 869.525Mhz, DR0(SF12BW125)
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214 214  * RU864: 869.1Mhz, SF12 BW125
215 215  
216 216  
236 +
217 217  (% style="color:#037691" %)**Examples:**
218 218  
219 219  (% class="box" %)
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262 262  )))
263 263  
264 264  
285 +
265 265  = 3. Example 1: Communicate with LT-22222-L =
266 266  
267 267  
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306 306  )))
307 307  
308 308  
309 -**~1. Input keys**
330 +(% style="color:blue" %)**1. Input keys**
310 310  
332 +
311 311  [[image:image-20220527162450-3.png]]
312 312  
313 313  Input Keys in LPS8
314 314  
315 315  
316 -**2. Make sure the LPS8 and LT use the same frequency bands, choose EU868 in this test.**
317 317  
339 +(% style="color:blue" %)**2. Make sure the LPS8 and LT use the same frequency bands, choose EU868 in this test.**
318 318  
319 -**3. Choose Built-in server**
320 320  
342 +(% style="color:blue" %)**3. Choose Built-in server**
343 +
344 +
321 321  [[image:image-20220527162518-4.png]]
322 322  
323 323  Choose Built-in server
324 324  
325 325  
326 -**4. Run the script.**
327 327  
328 -[[image:image-20220527162552-5.png]]
351 +(% style="color:blue" %)**4. Run the script.**
329 329  
353 +
354 +[[image:image-20220722115213-2.png]]
355 +
330 330  Run the script
331 331  
332 332  
333 -**5. Output:**
334 334  
335 -[[image:image-20220527162619-6.png]]
360 +(% style="color:blue" %)**5. Output:**
336 336  
362 +
363 +[[image:image-20220722115133-1.png]]
364 +
337 337  Output from LPS8
338 338  
339 339  
368 +
340 340  = 4. Example 2: Communicate to TCP Server =
341 341  
342 342  
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362 362  
363 363  
364 364  
365 -**run socket tool in PC**
394 +(% style="color:blue" %)**run socket tool in PC**
366 366  
396 +
367 367  [[image:image-20220527163028-9.png]]
368 368  
369 369  
... ... @@ -371,8 +371,9 @@
371 371  
372 372  
373 373  
374 -**Input Server address and port**
404 +(% style="color:blue" %)**Input Server address and port**
375 375  
406 +
376 376  [[image:image-20220527163106-10.png]]
377 377  
378 378  Input Server address and port
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379 379  
380 380  
381 381  
382 -**See value receive in socket tool:**
413 +(% style="color:blue" %)**See value receive in socket tool:**
383 383  
415 +
384 384  [[image:image-20220527163144-11.png]]
385 385  
386 386  value receive in socket tool
image-20220722115133-1.png
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