Last modified by Xiaoling on 2023/04/20 18:14
<
From version < 15.1 >
edited by Xiaoling
on 2022/07/22 11:32
To version < 21.3 >
edited by Xiaoling
on 2023/04/20 17:54
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1 -*
2 -** Table of** **Contents:
1 +**Table of Contents:**
3 3  
4 4  {{toc/}}
5 5  
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11 11  The Dragino LoRaWAN gateway can commuicate with LoRaWAN ABP End Node without the need of LoRaWAN server. It can be used in some cases such as:
12 12  
13 13  * No internet connection.
13 +
14 14  * 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]]).
15 15  
16 16  (((
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17 17  The basic of this feature is the decoding of (% style="color:red" %)**LoRaWAN ABP End Node**(%%). Requirements:
18 18  )))
19 19  
20 -1. LoRaWAN End Node in ABP mode. Make sure your end node works in this mode. End node most are default set to OTAA mode
21 -1. LoRaWAN Gateway model: [[LPS8>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/148-lps8.html]], [[LG308>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/140-lg308.html]], [[DLOS8>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/160-dlos8.html]] ,[[LIG16>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/171-lig16.html]]
22 -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/]](%%)**
20 +* LoRaWAN End Node in ABP mode. Make sure your end node works in this mode. End node most are default set to OTAA mode
23 23  
22 +* LoRaWAN Gateway model: [[LPS8>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/148-lps8.html]], [[LG308>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/140-lg308.html]], [[DLOS8>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/160-dlos8.html]] ,[[LIG16>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/171-lig16.html]]
23 +
24 +* 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/]](%%)**
25 +
26 +
24 24  = 2. How it works =
25 25  
26 26  
... ... @@ -44,8 +44,10 @@
44 44  
45 45  We need to input above keys in LG308 and enable ABP decryption.
46 46  
50 +
47 47  [[image:image-20220527161119-1.png]]
48 48  
53 +
49 49  Input the ABP keys in LG308
50 50  
51 51  
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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
63 +We can see the log of LG308 to know this packet arrive.
64 +
65 +
59 59  )))
60 60  
61 61  [[image:image-20220527161149-2.png]]
62 62  
70 +
63 63  LG308 log by "(% style="color:red" %)**logread -f**" (%%)command
64 64  
65 65  
74 +
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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74 74  )))
75 75  
76 76  * **RSSI**: 4646 4646 4646 3946 = 0xFFFF FF9F : So RSSI = (0xFFFF FF9F - 0x100000000) = -97
86 +
77 77  * **SNR**: 3030 3030 3030 3546 = 0x0000 005F = 95, need to divide 10 so SNR is 9.5
88 +
78 78  * **Payload**: 0xcc0c 0b63 0266 017f ff7f ff00
79 79  
80 80  (% class="box" %)
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87 87  000001c
88 88  )))
89 89  
101 +
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.
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135 135  === 2.2.2 How to Decode My End Node ===
136 136  
137 137  
138 -1/ Configure the ABP keys for your end node in the gateway. enable ABP decode in Web UI
150 +**1.** Configure the ABP keys for your end node in the gateway. enable ABP decode in Web UI
139 139  
140 -2/ Don't choose MQTT service, use LoRaWAN.
152 +**2. **Don't choose MQTT service, use LoRaWAN.
141 141  
142 -3/ When your end node send a message to the gateway, there will be a file store in /var/iot/channels. full path should be /var/iot/channels/END_NODE_DEV_ADDR
154 +**3.** When your end node send a message to the gateway, there will be a file store in /var/iot/channels. full path should be /var/iot/channels/END_NODE_DEV_ADDR
143 143  
144 -4/ Use the /etc/lora/decoder/Dragino_LHT65 as template to decode your payload. This script is written in Lua language. User can manually call this script when you see the data file in /var/iot/channels by running:
156 +**4.** Use the /etc/lora/decoder/Dragino_LHT65 as template to decode your payload. This script is written in Lua language. User can manually call this script when you see the data file in /var/iot/channels by running:
145 145  
146 146  {{{/etc/lora/decoder/Dragino_LHT65 END_NODE_DEV_ADDR
147 147  }}}
148 148  
149 -5/ What you see as output is the MQTT data device will upload, user's end node has different payload compare with LHT65, most properly this file will report with error. User need to modify to match the actual payload. Some notice:
161 +**5.** What you see as output is the MQTT data device will upload, user's end node has different payload compare with LHT65, most properly this file will report with error. User need to modify to match the actual payload.
150 150  
163 +
164 +(% style="color:red" %)
165 +**Some notice:**
166 +
151 151  * RSSI and SNR are added when gateway receive the packet, so there is always this field.
168 +
152 152  * If you rename the file, please make it executable.
170 +
153 153  * See this link for lua.bit module: [[http:~~/~~/luaforge.net/projects/bit/>>url:http://luaforge.net/projects/bit/]]
172 +
154 154  * Lua json module: [[http:~~/~~/json.luaforge.net/>>url:http://json.luaforge.net/]]
174 +
155 155  * the last line return is what will be used for MQTT
176 +
156 156  * User can use other language ,not limited to Lua, just make sure the return is what you want to send.
157 157  
158 -
159 -
160 160  == 2.2 Downstream ==
161 161  
162 162  
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166 166  
167 167  (% style="color:#037691" %)**dev_addr,imme/time,txt/hex,payload**
168 168  
169 -Since fimware > Dragino-v2 lgw-5.4.1608518541 . Support more option
170 170  
171 -(% style="color:#037691" %)**dev_addr,imme/time,txt/hex,payload,txpw,txbw,SF,frequency,rxwindow**
189 +Since fimware > [[Dragino lgw~~-~~-build-v5.4.1668567157>>https://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/LG308-LG301/Firmware/Release/]] . Support more option
172 172  
191 +(% style="color:#037691" %)**dev_addr,imme/time,txt/hex,payload,txpw,txbw,SF,frequency,rxwindow,Fport**
192 +
173 173  * **dev_addr:** Inptu the device address
194 +
174 174  * **imme/time:**
175 175  ** imme: send downstream immediately,For Class C end node.
176 176  ** time: send downstream after receive device's uplink. For Class A end node
198 +
177 177  * **txt/hex:**
178 178  ** txt: send payload in ASCII
179 179  ** hex: send payload in HEX
202 +
180 180  * **payload: **payload to be sent, payload lenght should match the LoRaWAN protocol requirement.
204 +
181 181  * **txpw:** Transmit Power. example: 20
206 +
182 182  * **txbw:** bandwidth:
183 183  ** 1: 500 kHz
184 184  ** 2: 250 kHz
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185 185  ** 3: 125 kHz
186 186  ** 4: 62.5 kHz
187 187  * **SF:** Spreading Factor : SF7/SF8/SF9/SF10/SF11/SF12
213 +
188 188  * **Frequency:** Transmit Frequency: example: 923300000
215 +
189 189  * **rxwindow:** transmit on Rx1Window or Rx2Window.
190 190  
218 +* **Fport: **Transmit port,example:8
191 191  
220 +
221 +
192 192  (% style="color:blue" %)**Completely exmaple:**
193 193  
194 194  * **Old version:** echo 018193F4,imme,hex,0101 > /var/iot/push/test
195 -* **New version:** echo 018193F4,imme,hex,0101,20,1,SF12,923300000,2 > /var/iot/push/test
196 196  
226 +* **New version:** echo 018193F4,imme,hex,0101,20,1,SF12,923300000,2,8 > /var/iot/push/test
197 197  
198 198  
199 -(% style="color:#037691" %)**Downstream Frequency**
200 200  
230 +Downstream(% style="color:#037691" %)** Frequency:**
231 +
201 201  The LG308 will use the RX2 window info to send the downstream payload, use the default LoRaWAN settings, as below:
202 202  
203 203  * EU868: 869.525Mhz, DR0(SF12BW125)
235 +
204 204  * US915: 923.3Mhz, SF12 BW500
237 +
205 205  * CN470: 505.3Mhz, SF12 BW125
239 +
206 206  * AU915: 923.3Mhz, SF12 BW500
241 +
207 207  * AS923: 923.2Mhz, SF10 BW125
243 +
208 208  * KR920: 921.9Mhz, SF12 BW125
245 +
209 209  * IN865: 866.55Mhz, SF10 BW125
247 +
210 210  * RU864: 869.1Mhz, SF12 BW125
211 211  
212 -
213 -
214 214  (% style="color:#037691" %)**Examples:**
215 215  
216 216  (% class="box" %)
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217 217  (((
218 218  we can use echo command to create files in LG308 for downstream.
219 219  root@dragino-1d25dc:~~# echo 2602111D,time,hex,12345678 > /var/iot/push/test
220 -)))
221 221  
222 -(% class="box" %)
223 -(((
257 +
224 224  **1)** From logread -f of gateway, we can see it has been added as pedning.
225 225  lora_pkt_fwd[4286]: INFO~~ [DNLK]Looking file : test
226 226  lora_pkt_fwd[4286]: INFO~~ [DNLK]devaddr:2602111D, txmode:time, pdfm:hex, size:4, payload1:4Vx,payload_hex:77C1BB90
227 227  lora_pkt_fwd[4286]: INFO~~ [DNLK] DNLINK PENDING!(1 elems).
228 -)))
229 229  
230 -(% class="box" %)
231 -(((
263 +
232 232  **2)** When there is an upstrea from end node, this downstream will be sent and shows:
233 233  lora_pkt_fwd[4286]: INFO: tx_start_delay=1497 (1497.000000) - (1497, bw_delay=0.000000, notch_delay=0.000000)
234 234  lora_pkt_fwd[4286]: [LGWSEND]lgw_send done: count_us=3537314420, freq=923300000, size=17
235 -)))
236 236  
237 -(% class="box" %)
238 -(((
268 +
239 239  **3)** and the end node will got:
240 240  [5764825]~*~*~*~** UpLinkCounter= 98 ~*~*~*~**
241 241  [5764827]TX on freq 905300000 Hz at DR 0
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248 248  Rssi= -41
249 249  Receive data
250 250  (% style="color:#037691" %)**2:12345678**  (%%) ~-~-> Hex
251 -)))
252 252  
253 -(% class="box" %)
254 -(((
282 +
255 255  **4) **If we use the command "echo 2602111D,time,txt,12345678 > /var/iot/push/test" for downstream, the end node will got:
256 256  [5955877]~*~*~*~** UpLinkCounter= 102 ~*~*~*~**
257 257  [5955879]TX on freq 904100000 Hz at DR 0
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310 310  #  whether the Device 2 has been changed.//
311 311  )))
312 312  
313 -**~1. Input keys**
314 314  
342 +(% style="color:blue" %)**1. Input keys**
343 +
344 +
315 315  [[image:image-20220527162450-3.png]]
316 316  
317 317  Input Keys in LPS8
318 318  
319 319  
320 -**2. Make sure the LPS8 and LT use the same frequency bands, choose EU868 in this test.**
321 321  
322 -**3. Choose Built-in server**
351 +(% style="color:blue" %)**2. Make sure the LPS8 and LT use the same frequency bands, choose EU868 in this test.**
323 323  
353 +
354 +(% style="color:blue" %)**3. Choose Built-in server**
355 +
356 +
324 324  [[image:image-20220527162518-4.png]]
325 325  
326 326  Choose Built-in server
327 327  
328 328  
329 -**4. Run the script.**
330 330  
331 -[[image:image-20220527162552-5.png]]
363 +(% style="color:blue" %)**4. Run the script.**
332 332  
365 +
366 +[[image:image-20220722115213-2.png]]
367 +
333 333  Run the script
334 334  
335 335  
336 -**5. Output:**
337 337  
338 -[[image:image-20220527162619-6.png]]
372 +(% style="color:blue" %)**5. Output:**
339 339  
374 +
375 +[[image:image-20220722115133-1.png]]
376 +
340 340  Output from LPS8
341 341  
342 342  
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350 350  
351 351  Full instruction video inlcude how to write scripts to fit server needed is here:
352 352  
353 -
354 354  (% style="color:#037691" %)**Video Instruction**(%%): **[[https:~~/~~/youtu.be/-nevW6U2TsE>>url:https://youtu.be/-nevW6U2TsE]]**
355 355  
392 +(% style="display:none" %) (%%)
356 356  
357 357  (% style="color:red" %)**Note: Firmware version must be higher than lgw-5.4.1607519907**
358 358  
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365 365  
366 366  
367 367  
368 -**run socket tool in PC**
405 +(% style="color:blue" %)**run socket tool in PC**
369 369  
407 +
370 370  [[image:image-20220527163028-9.png]]
371 371  
372 372  
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374 374  
375 375  
376 376  
377 -**Input Server address and port**
415 +(% style="color:blue" %)**Input Server address and port**
378 378  
417 +
379 379  [[image:image-20220527163106-10.png]]
380 380  
381 381  Input Server address and port
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382 382  
383 383  
384 384  
385 -**See value receive in socket tool:**
424 +(% style="color:blue" %)**See value receive in socket tool:**
386 386  
387 -[[image:image-20220527163144-11.png]]
388 388  
427 +[[image:image-20220527163144-11.png||height="502" width="1371"]]
428 +
389 389  value receive in socket tool
390 390  
391 391  
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