Last modified by Xiaoling on 2023/04/20 18:14
<
From version < 19.2 >
edited by Xiaoling
on 2022/09/17 16:42
To version < 16.3 >
edited by Xiaoling
on 2022/07/22 11:41
>
Change comment: There is no comment for this version

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... ... @@ -12,8 +12,6 @@
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 -
17 17  (((
18 18  The basic of this feature is the decoding of (% style="color:red" %)**LoRaWAN ABP End Node**(%%). Requirements:
19 19  )))
... ... @@ -23,8 +23,6 @@
23 23  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/]](%%)**
24 24  
25 25  
26 -
27 -
28 28  = 2. How it works =
29 29  
30 30  
... ... @@ -48,14 +48,11 @@
48 48  
49 49  We need to input above keys in LG308 and enable ABP decryption.
50 50  
51 -
52 52  [[image:image-20220527161119-1.png]]
53 53  
54 -
55 55  Input the ABP keys in LG308
56 56  
57 57  
58 -
59 59  == 2.1 Upstream ==
60 60  
61 61  
... ... @@ -62,18 +62,14 @@
62 62  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.
63 63  
64 64  (((
65 -We can see the log of LG308 to know this packet arrive.
66 -
67 -
58 +We can see the log of LG308 to know this packet arrive
68 68  )))
69 69  
70 70  [[image:image-20220527161149-2.png]]
71 71  
72 -
73 73  LG308 log by "(% style="color:red" %)**logread -f**" (%%)command
74 74  
75 75  
76 -
77 77  The data of End Node is stored in the file /var/iot/channels/2602111D. We can use hexdump command to check it.
78 78  
79 79  (% class="box" %)
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88 88  * **SNR**: 3030 3030 3030 3546 = 0x0000 005F = 95, need to divide 10 so SNR is 9.5
89 89  * **Payload**: 0xcc0c 0b63 0266 017f ff7f ff00
90 90  
91 -
92 -
93 93  (% class="box" %)
94 94  (((
95 95  (% 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:
... ... @@ -100,7 +100,6 @@
100 100  000001c
101 101  )))
102 102  
103 -
104 104  (% class="box" %)
105 105  (((
106 106  (% 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.
... ... @@ -107,7 +107,6 @@
107 107  )))
108 108  
109 109  
110 -
111 111  === 2.2.1 Decode Method ===
112 112  
113 113  
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177 177  
178 178  
179 179  
180 -
181 181  == 2.2 Downstream ==
182 182  
183 183  
... ... @@ -187,7 +187,6 @@
187 187  
188 188  (% style="color:#037691" %)**dev_addr,imme/time,txt/hex,payload**
189 189  
190 -
191 191  Since fimware > Dragino-v2 lgw-5.4.1608518541 . Support more option
192 192  
193 193  (% style="color:#037691" %)**dev_addr,imme/time,txt/hex,payload,txpw,txbw,SF,frequency,rxwindow**
... ... @@ -212,6 +212,7 @@
212 212  
213 213  
214 214  
198 +
215 215  (% style="color:blue" %)**Completely exmaple:**
216 216  
217 217  * **Old version:** echo 018193F4,imme,hex,0101 > /var/iot/push/test
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219 219  
220 220  
221 221  
222 -(% style="color:#037691" %)**Downstream Frequency:**
223 223  
207 +(% style="color:#037691" %)**Downstream Frequency**
208 +
224 224  The LG308 will use the RX2 window info to send the downstream payload, use the default LoRaWAN settings, as below:
225 225  
226 226  * EU868: 869.525Mhz, DR0(SF12BW125)
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234 234  
235 235  
236 236  
222 +
237 237  (% style="color:#037691" %)**Examples:**
238 238  
239 239  (% class="box" %)
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240 240  (((
241 241  we can use echo command to create files in LG308 for downstream.
242 242  root@dragino-1d25dc:~~# echo 2602111D,time,hex,12345678 > /var/iot/push/test
229 +)))
243 243  
244 -
231 +(% class="box" %)
232 +(((
245 245  **1)** From logread -f of gateway, we can see it has been added as pedning.
246 246  lora_pkt_fwd[4286]: INFO~~ [DNLK]Looking file : test
247 247  lora_pkt_fwd[4286]: INFO~~ [DNLK]devaddr:2602111D, txmode:time, pdfm:hex, size:4, payload1:4Vx,payload_hex:77C1BB90
248 248  lora_pkt_fwd[4286]: INFO~~ [DNLK] DNLINK PENDING!(1 elems).
237 +)))
249 249  
250 -
239 +(% class="box" %)
240 +(((
251 251  **2)** When there is an upstrea from end node, this downstream will be sent and shows:
252 252  lora_pkt_fwd[4286]: INFO: tx_start_delay=1497 (1497.000000) - (1497, bw_delay=0.000000, notch_delay=0.000000)
253 253  lora_pkt_fwd[4286]: [LGWSEND]lgw_send done: count_us=3537314420, freq=923300000, size=17
244 +)))
254 254  
255 -
246 +(% class="box" %)
247 +(((
256 256  **3)** and the end node will got:
257 257  [5764825]~*~*~*~** UpLinkCounter= 98 ~*~*~*~**
258 258  [5764827]TX on freq 905300000 Hz at DR 0
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265 265  Rssi= -41
266 266  Receive data
267 267  (% style="color:#037691" %)**2:12345678**  (%%) ~-~-> Hex
260 +)))
268 268  
269 -
262 +(% class="box" %)
263 +(((
270 270  **4) **If we use the command "echo 2602111D,time,txt,12345678 > /var/iot/push/test" for downstream, the end node will got:
271 271  [5955877]~*~*~*~** UpLinkCounter= 102 ~*~*~*~**
272 272  [5955879]TX on freq 904100000 Hz at DR 0
... ... @@ -282,7 +282,6 @@
282 282  )))
283 283  
284 284  
285 -
286 286  = 3. Example 1: Communicate with LT-22222-L =
287 287  
288 288  
... ... @@ -326,46 +326,36 @@
326 326  #  whether the Device 2 has been changed.//
327 327  )))
328 328  
322 +**~1. Input keys**
329 329  
330 -(% style="color:blue" %)**1. Input keys**
331 -
332 -
333 333  [[image:image-20220527162450-3.png]]
334 334  
335 335  Input Keys in LPS8
336 336  
337 337  
329 +**2. Make sure the LPS8 and LT use the same frequency bands, choose EU868 in this test.**
338 338  
339 -(% style="color:blue" %)**2. Make sure the LPS8 and LT use the same frequency bands, choose EU868 in this test.**
331 +**3. Choose Built-in server**
340 340  
341 -
342 -(% style="color:blue" %)**3. Choose Built-in server**
343 -
344 -
345 345  [[image:image-20220527162518-4.png]]
346 346  
347 347  Choose Built-in server
348 348  
349 349  
338 +**4. Run the script.**
350 350  
351 -(% style="color:blue" %)**4. Run the script.**
340 +[[image:image-20220527162552-5.png]]
352 352  
353 -
354 -[[image:image-20220722115213-2.png]]
355 -
356 356  Run the script
357 357  
358 358  
345 +**5. Output:**
359 359  
360 -(% style="color:blue" %)**5. Output:**
347 +[[image:image-20220527162619-6.png]]
361 361  
362 -
363 -[[image:image-20220722115133-1.png]]
364 -
365 365  Output from LPS8
366 366  
367 367  
368 -
369 369  = 4. Example 2: Communicate to TCP Server =
370 370  
371 371  
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391 391  
392 392  
393 393  
394 -(% style="color:blue" %)**run socket tool in PC**
377 +**run socket tool in PC**
395 395  
396 -
397 397  [[image:image-20220527163028-9.png]]
398 398  
399 399  
... ... @@ -401,9 +401,8 @@
401 401  
402 402  
403 403  
404 -(% style="color:blue" %)**Input Server address and port**
386 +**Input Server address and port**
405 405  
406 -
407 407  [[image:image-20220527163106-10.png]]
408 408  
409 409  Input Server address and port
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410 410  
411 411  
412 412  
413 -(% style="color:blue" %)**See value receive in socket tool:**
394 +**See value receive in socket tool:**
414 414  
415 -
416 416  [[image:image-20220527163144-11.png]]
417 417  
418 418  value receive in socket tool
image-20220722115133-1.png
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