Last modified by Xiaoling on 2023/04/20 18:14
<
From version < 16.1 >
edited by Xiaoling
on 2022/07/22 11:33
To version < 19.1 >
edited by Xiaoye
on 2022/08/02 11:54
>
Change comment: There is no comment for this version

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1 -XWiki.Xiaoling
1 +XWiki.Xiaoye
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22 22  
23 23  
24 24  
25 -
26 26  = 2. How it works =
27 27  
28 28  
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51 51  Input the ABP keys in LG308
52 52  
53 53  
53 +
54 54  == 2.1 Upstream ==
55 55  
56 56  
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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  
82 +
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  
93 +
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  
100 +
98 98  === 2.2.1 Decode Method ===
99 99  
100 100  
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138 138  === 2.2.2 How to Decode My End Node ===
139 139  
140 140  
141 -1/ Configure the ABP keys for your end node in the gateway. enable ABP decode in Web UI
144 +**1.** Configure the ABP keys for your end node in the gateway. enable ABP decode in Web UI
142 142  
143 -2/ Don't choose MQTT service, use LoRaWAN.
146 +**2. **Don't choose MQTT service, use LoRaWAN.
144 144  
145 -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
148 +**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
146 146  
147 -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:
150 +**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:
148 148  
149 149  {{{/etc/lora/decoder/Dragino_LHT65 END_NODE_DEV_ADDR
150 150  }}}
151 151  
152 -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:
155 +**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.
153 153  
157 +
158 +(% style="color:red" %)
159 +**Some notice:**
160 +
154 154  * RSSI and SNR are added when gateway receive the packet, so there is always this field.
155 155  * If you rename the file, please make it executable.
156 156  * See this link for lua.bit module: [[http:~~/~~/luaforge.net/projects/bit/>>url:http://luaforge.net/projects/bit/]]
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191 191  * **Frequency:** Transmit Frequency: example: 923300000
192 192  * **rxwindow:** transmit on Rx1Window or Rx2Window.
193 193  
194 -
195 -
196 196  (% style="color:blue" %)**Completely exmaple:**
197 197  
198 198  * **Old version:** echo 018193F4,imme,hex,0101 > /var/iot/push/test
199 199  * **New version:** echo 018193F4,imme,hex,0101,20,1,SF12,923300000,2 > /var/iot/push/test
200 200  
201 -
202 202  (% style="color:#037691" %)**Downstream Frequency**
203 203  
204 204  The LG308 will use the RX2 window info to send the downstream payload, use the default LoRaWAN settings, as below:
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212 212  * IN865: 866.55Mhz, SF10 BW125
213 213  * RU864: 869.1Mhz, SF12 BW125
214 214  
215 -
216 216  (% style="color:#037691" %)**Examples:**
217 217  
218 218  (% class="box" %)
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219 219  (((
220 220  we can use echo command to create files in LG308 for downstream.
221 221  root@dragino-1d25dc:~~# echo 2602111D,time,hex,12345678 > /var/iot/push/test
222 -)))
223 223  
224 -(% class="box" %)
225 -(((
226 +
226 226  **1)** From logread -f of gateway, we can see it has been added as pedning.
227 227  lora_pkt_fwd[4286]: INFO~~ [DNLK]Looking file : test
228 228  lora_pkt_fwd[4286]: INFO~~ [DNLK]devaddr:2602111D, txmode:time, pdfm:hex, size:4, payload1:4Vx,payload_hex:77C1BB90
229 229  lora_pkt_fwd[4286]: INFO~~ [DNLK] DNLINK PENDING!(1 elems).
230 -)))
231 231  
232 -(% class="box" %)
233 -(((
232 +
234 234  **2)** When there is an upstrea from end node, this downstream will be sent and shows:
235 235  lora_pkt_fwd[4286]: INFO: tx_start_delay=1497 (1497.000000) - (1497, bw_delay=0.000000, notch_delay=0.000000)
236 236  lora_pkt_fwd[4286]: [LGWSEND]lgw_send done: count_us=3537314420, freq=923300000, size=17
237 -)))
238 238  
239 -(% class="box" %)
240 -(((
237 +
241 241  **3)** and the end node will got:
242 242  [5764825]~*~*~*~** UpLinkCounter= 98 ~*~*~*~**
243 243  [5764827]TX on freq 905300000 Hz at DR 0
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250 250  Rssi= -41
251 251  Receive data
252 252  (% style="color:#037691" %)**2:12345678**  (%%) ~-~-> Hex
253 -)))
254 254  
255 -(% class="box" %)
256 -(((
251 +
257 257  **4) **If we use the command "echo 2602111D,time,txt,12345678 > /var/iot/push/test" for downstream, the end node will got:
258 258  [5955877]~*~*~*~** UpLinkCounter= 102 ~*~*~*~**
259 259  [5955879]TX on freq 904100000 Hz at DR 0
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269 269  )))
270 270  
271 271  
267 +
272 272  = 3. Example 1: Communicate with LT-22222-L =
273 273  
274 274  
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312 312  #  whether the Device 2 has been changed.//
313 313  )))
314 314  
311 +
315 315  **~1. Input keys**
316 316  
317 317  [[image:image-20220527162450-3.png]]
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321 321  
322 322  **2. Make sure the LPS8 and LT use the same frequency bands, choose EU868 in this test.**
323 323  
321 +
324 324  **3. Choose Built-in server**
325 325  
326 326  [[image:image-20220527162518-4.png]]
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330 330  
331 331  **4. Run the script.**
332 332  
333 -[[image:image-20220527162552-5.png]]
331 +[[image:image-20220722115213-2.png]]
334 334  
335 335  Run the script
336 336  
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337 337  
338 338  **5. Output:**
339 339  
340 -[[image:image-20220527162619-6.png]]
338 +[[image:image-20220722115133-1.png]]
341 341  
342 342  Output from LPS8
343 343  
344 344  
343 +
345 345  = 4. Example 2: Communicate to TCP Server =
346 346  
347 347  
image-20220722115133-1.png
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