Last modified by Xiaoling on 2023/04/20 18:14
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From version < 11.2 >
edited by Xiaoling
on 2022/05/27 16:31
To version < 14.8 >
edited by Xiaoling
on 2022/07/22 11:32
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1 - **Contents:**
1 +*
2 +** Table of** **Contents:
2 2  
3 3  {{toc/}}
4 4  
5 5  
7 +
6 6  = 1. Introduction =
7 7  
10 +
8 8  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:
9 9  
10 10  * No internet connection.
11 -* 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>>url:https://wiki.dragino.com/index.php/MQTT_Forward_Instruction]]).
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]]).
12 12  
13 13  (((
14 14  The basic of this feature is the decoding of (% style="color:red" %)**LoRaWAN ABP End Node**(%%). Requirements:
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28 28  
29 29  (% class="box infomessage" %)
30 30  (((
31 -AT+NWKSKEY=72 32 63 95 dd 8f e2 b2 13 66 e4 35 93 8f 55 df
34 +**AT+NWKSKEY=72 32 63 95 dd 8f e2 b2 13 66 e4 35 93 8f 55 df
32 32  AT+APPSKEY=b3 17 f8 14 7a 43 27 8a 6a 31 c4 47 3d 55 5d 33
33 -AT+DADDR=2602111D
36 +AT+DADDR=2602111D**
34 34  )))
35 35  
36 36  (((
37 37  and we have the LG308 works and US915 band and support ABP decryption. User can input these keys in LG308 so the LG308 can communicate with LGT92.
41 +
42 +
38 38  )))
39 39  
40 40  We need to input above keys in LG308 and enable ABP decryption.
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46 46  
47 47  == 2.1 Upstream ==
48 48  
54 +
49 49  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.
50 50  
51 51  (((
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54 54  
55 55  [[image:image-20220527161149-2.png]]
56 56  
57 -LG308 log by "logread -f" command
63 +LG308 log by "(% style="color:red" %)**logread -f**" (%%)command
58 58  
59 59  
60 60  The data of End Node is stored in the file /var/iot/channels/2602111D. We can use hexdump command to check it.
... ... @@ -67,9 +67,9 @@
67 67  000001c
68 68  )))
69 69  
70 -* RSSI: 4646 4646 4646 3946 = 0xFFFF FF9F : So RSSI = (0xFFFF FF9F - 0x100000000) = -97
71 -* SNR: 3030 3030 3030 3546 = 0x0000 005F = 95, need to divide 10 so SNR is 9.5
72 -* Payload: 0xcc0c 0b63 0266 017f ff7f ff00
76 +* **RSSI**: 4646 4646 4646 3946 = 0xFFFF FF9F : So RSSI = (0xFFFF FF9F - 0x100000000) = -97
77 +* **SNR**: 3030 3030 3030 3546 = 0x0000 005F = 95, need to divide 10 so SNR is 9.5
78 +* **Payload**: 0xcc0c 0b63 0266 017f ff7f ff00
73 73  
74 74  (% class="box" %)
75 75  (((
... ... @@ -83,12 +83,13 @@
83 83  
84 84  (% class="box" %)
85 85  (((
86 -(% style="color:#037691" %)**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.
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.
87 87  )))
88 88  
89 89  
90 90  === 2.2.1 Decode Method ===
91 91  
98 +
92 92  The decode methods: (% style="color:#037691" %)**ASCII String, Decode_LHT65**(%%) doesn't affect how the sensor data is stored, they are to define how should the sensor data to be sent.
93 93  
94 94  For example we have a LHT65 , works in ABP mode and gateway successful get the data, which are:
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101 101  000001c
102 102  )))
103 103  
111 +
104 104  If we choose ASCII decoder, the MQTT process will send out with mqtt-data:
105 105  
106 106  (% class="box" %)
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110 110  Sun Sep 27 04:33:16 2020 user.notice root: [IoT.MQTT]:mqtt_data[-m]: (% style="color:#037691" %)**ffffffe700000048ccd17fff7fff017fff7fff00**
111 111  )))
112 112  
121 +
113 113  If we choose Decode_LHT65, the MQTT process will send out with mqtt-data
114 114  
115 115  (% class="box" %)
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125 125  
126 126  === 2.2.2 How to Decode My End Node ===
127 127  
137 +
128 128  1/ Configure the ABP keys for your end node in the gateway. enable ABP decode in Web UI
129 129  
130 130  2/ Don't choose MQTT service, use LoRaWAN.
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146 146  * User can use other language ,not limited to Lua, just make sure the return is what you want to send.
147 147  
148 148  
159 +
149 149  == 2.2 Downstream ==
150 150  
162 +
151 151  In LG308, we can create a file in the directory /var/iot/push for downstream purpose. We recommend using each command to generate this file. This file will be used for transmission and auto-deleted after used
152 152  
153 153  The file should use below format:
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158 158  
159 159  (% style="color:#037691" %)**dev_addr,imme/time,txt/hex,payload,txpw,txbw,SF,frequency,rxwindow**
160 160  
161 -* dev_addr: Inptu the device address
162 -* imme/time:
173 +* **dev_addr:** Inptu the device address
174 +* **imme/time:**
163 163  ** imme: send downstream immediately,For Class C end node.
164 164  ** time: send downstream after receive device's uplink. For Class A end node
165 -* txt/hex:
177 +* **txt/hex:**
166 166  ** txt: send payload in ASCII
167 167  ** hex: send payload in HEX
168 -* payload: payload to be sent, payload lenght should match the LoRaWAN protocol requirement.
169 -* txpw: Transmit Power. example: 20
170 -* txbw: bandwidth:
180 +* **payload: **payload to be sent, payload lenght should match the LoRaWAN protocol requirement.
181 +* **txpw:** Transmit Power. example: 20
182 +* **txbw:** bandwidth:
171 171  ** 1: 500 kHz
172 172  ** 2: 250 kHz
173 173  ** 3: 125 kHz
174 174  ** 4: 62.5 kHz
175 -* SF: Spreading Factor : SF7/SF8/SF9/SF10/SF11/SF12
176 -* Frequency: Transmit Frequency: example: 923300000
177 -* rxwindow: transmit on Rx1Window or Rx2Window.
187 +* **SF:** Spreading Factor : SF7/SF8/SF9/SF10/SF11/SF12
188 +* **Frequency:** Transmit Frequency: example: 923300000
189 +* **rxwindow:** transmit on Rx1Window or Rx2Window.
178 178  
179 -Completely exmaple:
180 180  
181 -* Old version: echo 018193F4,imme,hex,0101 > /var/iot/push/test
182 -* New version: echo 018193F4,imme,hex,0101,20,1,SF12,923300000,2 > /var/iot/push/test
192 +(% style="color:blue" %)**Completely exmaple:**
183 183  
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 +
197 +
198 +
184 184  (% style="color:#037691" %)**Downstream Frequency**
185 185  
186 186  The LG308 will use the RX2 window info to send the downstream payload, use the default LoRaWAN settings, as below:
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194 194  * IN865: 866.55Mhz, SF10 BW125
195 195  * RU864: 869.1Mhz, SF12 BW125
196 196  
212 +
213 +
197 197  (% style="color:#037691" %)**Examples:**
198 198  
199 199  (% class="box" %)
... ... @@ -204,7 +204,7 @@
204 204  
205 205  (% class="box" %)
206 206  (((
207 -1) From logread -f of gateway, we can see it has been added as pedning.
224 +**1)** From logread -f of gateway, we can see it has been added as pedning.
208 208  lora_pkt_fwd[4286]: INFO~~ [DNLK]Looking file : test
209 209  lora_pkt_fwd[4286]: INFO~~ [DNLK]devaddr:2602111D, txmode:time, pdfm:hex, size:4, payload1:4Vx,payload_hex:77C1BB90
210 210  lora_pkt_fwd[4286]: INFO~~ [DNLK] DNLINK PENDING!(1 elems).
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212 212  
213 213  (% class="box" %)
214 214  (((
215 -2) When there is an upstrea from end node, this downstream will be sent and shows:
232 +**2)** When there is an upstrea from end node, this downstream will be sent and shows:
216 216  lora_pkt_fwd[4286]: INFO: tx_start_delay=1497 (1497.000000) - (1497, bw_delay=0.000000, notch_delay=0.000000)
217 217  lora_pkt_fwd[4286]: [LGWSEND]lgw_send done: count_us=3537314420, freq=923300000, size=17
218 218  )))
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219 219  
220 220  (% class="box" %)
221 221  (((
222 -3) and the end node will got:
239 +**3)** and the end node will got:
223 223  [5764825]~*~*~*~** UpLinkCounter= 98 ~*~*~*~**
224 224  [5764827]TX on freq 905300000 Hz at DR 0
225 225  Update Interval: 60000 ms
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235 235  
236 236  (% class="box" %)
237 237  (((
238 -4) If we use the command "echo 2602111D,time,txt,12345678 > /var/iot/push/test" for downstream, the end node will got:
255 +**4) **If we use the command "echo 2602111D,time,txt,12345678 > /var/iot/push/test" for downstream, the end node will got:
239 239  [5955877]~*~*~*~** UpLinkCounter= 102 ~*~*~*~**
240 240  [5955879]TX on freq 904100000 Hz at DR 0
241 241  Update Interval: 60000 ms
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252 252  
253 253  = 3. Example 1: Communicate with LT-22222-L =
254 254  
272 +
255 255  Script can be download from: [[Example Script 1>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/LPS8/Firmware/customized_script/&file=talk_to_lt-22222-l_v0.1.sh]]
256 256  
257 257  (% class="box" %)
258 258  (((
259 -#!/bin/sh
277 +//#!/bin/sh
260 260  # This scripts shows how to use LPS8/LG308/DLOS8 to communicate with two LoRaWAN End Nodes, without the use of internet or LoRaWAN server
261 261  #
262 262  # Hardware Prepare:
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289 289  #  Device1: DI1: ON, DI2: ON , DO1: ON,  DO2: ON
290 290  #  Device2: DI1: OFF, DI2: OFF , DO1: ON,  DO2: ON
291 291  #  So if a person is in the Device 1 location, he can check if the DO LED match DI LEDs on Device 1 to confirm
292 -#  whether the Device 2 has been changed.
310 +#  whether the Device 2 has been changed.//
293 293  )))
294 294  
295 -~1. Input keys
313 +**~1. Input keys**
296 296  
297 297  [[image:image-20220527162450-3.png]]
298 298  
... ... @@ -299,9 +299,9 @@
299 299  Input Keys in LPS8
300 300  
301 301  
302 -2. Make sure the LPS8 and LT use the same frequency bands, choose EU868 in this test.
320 +**2. Make sure the LPS8 and LT use the same frequency bands, choose EU868 in this test.**
303 303  
304 -3. Choose Built-in server
322 +**3. Choose Built-in server**
305 305  
306 306  [[image:image-20220527162518-4.png]]
307 307  
... ... @@ -308,7 +308,7 @@
308 308  Choose Built-in server
309 309  
310 310  
311 -4. Run the script.
329 +**4. Run the script.**
312 312  
313 313  [[image:image-20220527162552-5.png]]
314 314  
... ... @@ -315,7 +315,7 @@
315 315  Run the script
316 316  
317 317  
318 -5. Output:
336 +**5. Output:**
319 319  
320 320  [[image:image-20220527162619-6.png]]
321 321  
... ... @@ -324,6 +324,7 @@
324 324  
325 325  = 4. Example 2: Communicate to TCP Server =
326 326  
345 +
327 327  [[image:image-20220527162648-7.png]]
328 328  
329 329  Network Structure
... ... @@ -337,6 +337,7 @@
337 337  
338 338  (% style="color:red" %)**Note: Firmware version must be higher than lgw-5.4.1607519907**
339 339  
359 +
340 340  Assume we already set up ABP keys in the gateway:
341 341  
342 342  [[image:image-20220527162852-8.png]]
... ... @@ -344,8 +344,9 @@
344 344  Input Keys in LPS8
345 345  
346 346  
347 -run socket tool in PC
348 348  
368 +**run socket tool in PC**
369 +
349 349  [[image:image-20220527163028-9.png]]
350 350  
351 351  
... ... @@ -352,17 +352,20 @@
352 352  Socket tool
353 353  
354 354  
355 -Input Server address and port
356 356  
377 +**Input Server address and port**
378 +
357 357  [[image:image-20220527163106-10.png]]
358 358  
359 359  Input Server address and port
360 360  
361 361  
362 -See value receive in socket tool. :
363 363  
364 -[[image:https://wiki.dragino.com/images/thumb/2/20/LPS8_TCP_4.png/600px-LPS8_TCP_4.png||height="219" width="600"]]
385 +**See value receive in socket tool:**
365 365  
387 +[[image:image-20220527163144-11.png]]
388 +
366 366  value receive in socket tool
367 367  
391 +
368 368  If user want to modify the TCP connection method. He can refer: [[https:~~/~~/github.com/dragino/dragino-packages/blob/lg02/haserl-ui/root/usr/bin/tcp_process.sh>>url:https://github.com/dragino/dragino-packages/blob/lg02/haserl-ui/root/usr/bin/tcp_process.sh]]. Same script is on /usr/bin of gateway.
image-20220527163144-11.png
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