Last modified by Xiaoling on 2023/04/20 18:14

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Xiaoling 15.2 1 **Table of Contents:**
Xiaoling 1.1 2
Xiaoling 1.5 3 {{toc/}}
Xiaoling 1.1 4
Xiaoling 1.5 5
Xiaoling 14.8 6
Xiaoling 1.3 7 = 1. Introduction =
8
Xiaoling 14.8 9
Xiaoling 1.2 10 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:
Xiaoling 1.1 11
Xiaoling 1.2 12 * No internet connection.
Xiaoling 21.3 13
Xiaoling 14.2 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]]).
Xiaoling 1.1 15
Xiaoling 1.7 16 (((
Xiaoling 1.13 17 The basic of this feature is the decoding of (% style="color:red" %)**LoRaWAN ABP End Node**(%%). Requirements:
Xiaoling 1.7 18 )))
Xiaoling 1.1 19
Xiaoling 21.3 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
Xiaoling 1.1 21
Xiaoling 21.3 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]]
Xiaoling 21.2 23
Xiaoling 21.3 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/]](%%)**
Xiaoling 21.2 25
Xiaoling 21.3 26
Xiaoling 21.4 27
Xiaoling 1.4 28 = 2. How it works =
Xiaoling 1.1 29
Xiaoling 1.4 30
Xiaoling 1.13 31 (% style="color:#037691" %)**Video Instruction**(%%): **[[https:~~/~~/youtu.be/ZBjXwmp7rwM>>url:https://youtu.be/ZBjXwmp7rwM]]**
Xiaoling 1.4 32
Xiaoling 1.14 33
Xiaoling 1.2 34 Assume we have the LoRaWAN tracker LGT92 which works in ABP mode and US915 band. It has below keys:
Xiaoling 1.1 35
Xiaoling 1.8 36 (% class="box infomessage" %)
37 (((
Xiaoling 14.8 38 **AT+NWKSKEY=72 32 63 95 dd 8f e2 b2 13 66 e4 35 93 8f 55 df
Xiaoling 1.2 39 AT+APPSKEY=b3 17 f8 14 7a 43 27 8a 6a 31 c4 47 3d 55 5d 33
Xiaoling 14.8 40 AT+DADDR=2602111D**
Xiaoling 1.8 41 )))
Xiaoling 1.1 42
Xiaoling 1.8 43 (((
Xiaoling 1.2 44 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.
Xiaoling 14.8 45
46
Xiaoling 1.8 47 )))
Xiaoling 1.2 48
49 We need to input above keys in LG308 and enable ABP decryption.
50
Xiaoling 19.2 51
Xiaoling 3.2 52 [[image:image-20220527161119-1.png]]
Xiaoling 1.2 53
Xiaoling 19.2 54
Xiaoling 1.2 55 Input the ABP keys in LG308
56
57
Xiaoling 1.3 58 == 2.1 Upstream ==
Xiaoling 1.2 59
Xiaoling 14.8 60
Xiaoling 1.2 61 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.
62
Xiaoling 1.8 63 (((
Xiaoling 19.2 64 We can see the log of LG308 to know this packet arrive.
65
66
Xiaoling 1.8 67 )))
Xiaoling 1.2 68
Xiaoling 3.2 69 [[image:image-20220527161149-2.png]]
Xiaoling 1.2 70
Xiaoling 19.2 71
Xiaoling 14.8 72 LG308 log by "(% style="color:red" %)**logread -f**" (%%)command
Xiaoling 1.2 73
74
Xiaoling 19.2 75
Xiaoling 1.2 76 The data of End Node is stored in the file /var/iot/channels/2602111D. We can use hexdump command to check it.
77
Xiaoling 1.8 78 (% class="box" %)
79 (((
80 root@dragino-1d25dc:~~# hexdump /var/iot/channels/2602111D
Xiaoling 3.3 81 0000000 (% style="color:#037691" %)**4646 4646 4646 3946 3030 3030 3030 3546**(%%)      ~-~-> Got RSSI and SNR    
82 0000010 (% style="color:#037691" %)**cc0c 0b63 0266 017f ff7f ff00 **(%%) ~-~-> Payload
Xiaoling 1.2 83 000001c
Xiaoling 1.8 84 )))
Xiaoling 1.2 85
Xiaoling 14.8 86 * **RSSI**: 4646 4646 4646 3946 = 0xFFFF FF9F : So RSSI = (0xFFFF FF9F - 0x100000000) = -97
Xiaoling 21.3 87
Xiaoling 14.8 88 * **SNR**: 3030 3030 3030 3546 = 0x0000 005F = 95, need to divide 10 so SNR is 9.5
Xiaoling 21.3 89
Xiaoling 14.8 90 * **Payload**: 0xcc0c 0b63 0266 017f ff7f ff00
Xiaoling 1.2 91
Xiaoling 1.8 92 (% class="box" %)
93 (((
Xiaoling 3.3 94 (% 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:
Xiaoling 3.6 95 in LGT92, use (% style="color:#037691" %)**AT+SEND=12:hello world** (%%)to send ASCII string
Xiaoling 1.8 96 root@dragino-1d25dc:~~# hexdump /var/iot/channels/2602111D
Xiaoling 1.2 97 0000000 4646 4646 4646 3946 3030 3030 3030 3546
Xiaoling 1.8 98 0000010 6865 6c6c 6f20 776f 726c 6400      ~-~-> Got ASCII code "hello world"    
Xiaoling 1.2 99 000001c
Xiaoling 1.8 100 )))
Xiaoling 1.2 101
Xiaoling 18.4 102
Xiaoling 1.8 103 (% class="box" %)
104 (((
Xiaoling 14.8 105 (% 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.
Xiaoling 1.8 106 )))
Xiaoling 1.2 107
Xiaoling 3.4 108
Xiaoling 1.3 109 === 2.2.1 Decode Method ===
Xiaoling 1.2 110
Xiaoling 14.8 111
Xiaoling 3.6 112 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.
Xiaoling 1.2 113
114 For example we have a LHT65 , works in ABP mode and gateway successful get the data, which are:
115
Xiaoling 1.8 116 (% class="box" %)
117 (((
118 root@dragino-1baf44:~~# hexdump /var/iot/channels/01826108
Xiaoling 1.2 119 0000000 4646 4646 4646 4537 3030 3030 3030 3438
Xiaoling 1.8 120 0000010 ccd1 7fff 7fff 017f ff7f ff00         
Xiaoling 1.2 121 000001c
Xiaoling 1.8 122 )))
Xiaoling 1.2 123
Xiaoling 14.8 124
Xiaoling 1.2 125 If we choose ASCII decoder, the MQTT process will send out with mqtt-data:
126
Xiaoling 1.8 127 (% class="box" %)
128 (((
129 Sun Sep 27 04:33:16 2020 user.notice root: [IoT.MQTT]:pub_topic[-t]: dragino-1baf44/01826108/data
Xiaoling 1.2 130 Sun Sep 27 04:33:16 2020 user.notice root: [IoT.MQTT]:decoder: ASCII
Xiaoling 3.6 131 Sun Sep 27 04:33:16 2020 user.notice root: [IoT.MQTT]:mqtt_data[-m]: (% style="color:#037691" %)**ffffffe700000048ccd17fff7fff017fff7fff00**
Xiaoling 1.8 132 )))
Xiaoling 1.2 133
Xiaoling 14.8 134
Xiaoling 1.2 135 If we choose Decode_LHT65, the MQTT process will send out with mqtt-data
136
Xiaoling 1.8 137 (% class="box" %)
138 (((
139 Sun Sep 27 04:36:45 2020 user.notice root: [IoT.MQTT]:pub_topic[-t]: dragino-1baf44/01826108/data
Xiaoling 1.2 140 Sun Sep 27 04:36:45 2020 user.notice root: [IoT.MQTT]:decoder: Dragino_LHT65
Xiaoling 3.6 141 Sun Sep 27 04:36:45 2020 user.notice root: [IoT.MQTT]:mqtt_data[-m]:** (% style="color:#037691" %){"Hum_SHT":32.7,"BatV":3.281,"TempC_DS":32.9,
142 "EXT":"Temperature Sensor","RSSI":-24,"TempC_SHT":85.0,"SNR":8.2,"ext_sensor":0}(%%)**
Xiaoling 1.8 143 )))
Xiaoling 1.2 144
145 Above scripts are store in /etc/lora/decoder/. User can put their scripts here and select it in the UI.
146
147
Xiaoling 1.3 148 === 2.2.2 How to Decode My End Node ===
Xiaoling 1.2 149
Xiaoling 14.8 150
Xiaoling 16.2 151 **1.** Configure the ABP keys for your end node in the gateway. enable ABP decode in Web UI
Xiaoling 1.2 152
Xiaoling 16.2 153 **2. **Don't choose MQTT service, use LoRaWAN.
Xiaoling 1.2 154
Xiaoling 16.2 155 **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
Xiaoling 1.2 156
Xiaoling 16.2 157 **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:
Xiaoling 1.2 158
159 {{{/etc/lora/decoder/Dragino_LHT65 END_NODE_DEV_ADDR
160 }}}
161
Xiaoling 16.2 162 **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.
Xiaoling 1.2 163
Xiaoling 16.2 164
165 (% style="color:red" %)
166 **Some notice:**
167
Xiaoling 1.2 168 * RSSI and SNR are added when gateway receive the packet, so there is always this field.
Xiaoling 21.3 169
Xiaoling 1.2 170 * If you rename the file, please make it executable.
Xiaoling 21.3 171
Xiaoling 1.2 172 * See this link for lua.bit module: [[http:~~/~~/luaforge.net/projects/bit/>>url:http://luaforge.net/projects/bit/]]
Xiaoling 21.3 173
Xiaoling 1.2 174 * Lua json module: [[http:~~/~~/json.luaforge.net/>>url:http://json.luaforge.net/]]
Xiaoling 21.3 175
Xiaoling 1.2 176 * the last line return is what will be used for MQTT
Xiaoling 21.3 177
Xiaoling 1.2 178 * User can use other language ,not limited to Lua, just make sure the return is what you want to send.
179
Xiaoling 21.4 180
181
Xiaoling 1.3 182 == 2.2 Downstream ==
Xiaoling 1.2 183
Xiaoling 14.8 184
Xiaoling 1.2 185 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
186
187 The file should use below format:
188
Xiaoling 3.7 189 (% style="color:#037691" %)**dev_addr,imme/time,txt/hex,payload**
Xiaoling 1.2 190
Xiaoling 19.2 191
Kilight Cao 20.1 192 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
Xiaoling 1.2 193
Kilight Cao 21.1 194 (% style="color:#037691" %)**dev_addr,imme/time,txt/hex,payload,txpw,txbw,SF,frequency,rxwindow,Fport**
Xiaoling 1.2 195
Xiaoling 14.8 196 * **dev_addr:** Inptu the device address
Xiaoling 21.3 197
Xiaoling 14.8 198 * **imme/time:**
Xiaoling 1.2 199 ** imme: send downstream immediately,For Class C end node.
200 ** time: send downstream after receive device's uplink. For Class A end node
Xiaoling 21.3 201
Xiaoling 14.8 202 * **txt/hex:**
Xiaoling 1.2 203 ** txt: send payload in ASCII
204 ** hex: send payload in HEX
Xiaoling 21.3 205
Xiaoling 14.8 206 * **payload: **payload to be sent, payload lenght should match the LoRaWAN protocol requirement.
Xiaoling 21.3 207
Xiaoling 14.8 208 * **txpw:** Transmit Power. example: 20
Xiaoling 21.3 209
Xiaoling 14.8 210 * **txbw:** bandwidth:
Xiaoling 1.2 211 ** 1: 500 kHz
212 ** 2: 250 kHz
213 ** 3: 125 kHz
214 ** 4: 62.5 kHz
Xiaoling 14.8 215 * **SF:** Spreading Factor : SF7/SF8/SF9/SF10/SF11/SF12
Xiaoling 21.3 216
Xiaoling 14.8 217 * **Frequency:** Transmit Frequency: example: 923300000
Xiaoling 21.3 218
Xiaoling 14.8 219 * **rxwindow:** transmit on Rx1Window or Rx2Window.
Xiaoling 21.3 220
Kilight Cao 20.1 221 * **Fport: **Transmit port,example:8
Xiaoling 1.2 222
Xiaoling 21.3 223
Xiaoling 14.8 224 (% style="color:blue" %)**Completely exmaple:**
Xiaoling 1.2 225
Xiaoling 14.8 226 * **Old version:** echo 018193F4,imme,hex,0101 > /var/iot/push/test
Xiaoling 21.3 227
Kilight Cao 21.1 228 * **New version:** echo 018193F4,imme,hex,0101,20,1,SF12,923300000,2,8 > /var/iot/push/test
Xiaoling 14.6 229
Xiaoling 19.2 230
Xiaoling 21.4 231 Downstream(% style="color:#037691" %)** Frequency:**
Xiaoling 21.3 232
Xiaoling 1.2 233 The LG308 will use the RX2 window info to send the downstream payload, use the default LoRaWAN settings, as below:
234
235 * EU868: 869.525Mhz, DR0(SF12BW125)
Xiaoling 21.3 236
Xiaoling 1.2 237 * US915: 923.3Mhz, SF12 BW500
Xiaoling 21.3 238
Xiaoling 1.2 239 * CN470: 505.3Mhz, SF12 BW125
Xiaoling 21.3 240
Xiaoling 1.2 241 * AU915: 923.3Mhz, SF12 BW500
Xiaoling 21.3 242
Xiaoling 1.2 243 * AS923: 923.2Mhz, SF10 BW125
Xiaoling 21.3 244
Xiaoling 1.2 245 * KR920: 921.9Mhz, SF12 BW125
Xiaoling 21.3 246
Xiaoling 1.2 247 * IN865: 866.55Mhz, SF10 BW125
Xiaoling 21.3 248
Xiaoling 1.2 249 * RU864: 869.1Mhz, SF12 BW125
250
Xiaoling 21.4 251
252
Xiaoling 3.6 253 (% style="color:#037691" %)**Examples:**
Xiaoling 1.2 254
Xiaoling 1.10 255 (% class="box" %)
256 (((
257 we can use echo command to create files in LG308 for downstream.
258 root@dragino-1d25dc:~~# echo 2602111D,time,hex,12345678 > /var/iot/push/test
Xiaoling 1.2 259
Xiaoling 16.4 260
Xiaoling 14.8 261 **1)** From logread -f of gateway, we can see it has been added as pedning.
Xiaoling 1.10 262 lora_pkt_fwd[4286]: INFO~~ [DNLK]Looking file : test
263 lora_pkt_fwd[4286]: INFO~~ [DNLK]devaddr:2602111D, txmode:time, pdfm:hex, size:4, payload1:4Vx,payload_hex:77C1BB90
264 lora_pkt_fwd[4286]: INFO~~ [DNLK] DNLINK PENDING!(1 elems).
Xiaoling 1.2 265
Xiaoling 16.4 266
Xiaoling 14.8 267 **2)** When there is an upstrea from end node, this downstream will be sent and shows:
Xiaoling 1.2 268 lora_pkt_fwd[4286]: INFO: tx_start_delay=1497 (1497.000000) - (1497, bw_delay=0.000000, notch_delay=0.000000)
269 lora_pkt_fwd[4286]: [LGWSEND]lgw_send done: count_us=3537314420, freq=923300000, size=17
270
Xiaoling 16.4 271
Xiaoling 14.8 272 **3)** and the end node will got:
Xiaoling 1.10 273 [5764825]~*~*~*~** UpLinkCounter= 98 ~*~*~*~**
Xiaoling 1.2 274 [5764827]TX on freq 905300000 Hz at DR 0
275 Update Interval: 60000 ms
276 [5765202]txDone
277 [5766193]RX on freq 927500000 Hz at DR 10
278 [5766225]rxTimeOut
279 [5767205]RX on freq 923300000 Hz at DR 8
280 [5767501]rxDone
281 Rssi= -41
282 Receive data
Xiaoling 3.8 283 (% style="color:#037691" %)**2:12345678**  (%%) ~-~-> Hex
Xiaoling 1.2 284
Xiaoling 16.4 285
Xiaoling 14.8 286 **4) **If we use the command "echo 2602111D,time,txt,12345678 > /var/iot/push/test" for downstream, the end node will got:
Xiaoling 1.10 287 [5955877]~*~*~*~** UpLinkCounter= 102 ~*~*~*~**
Xiaoling 1.2 288 [5955879]TX on freq 904100000 Hz at DR 0
289 Update Interval: 60000 ms
290 [5956254]txDone
291 [5957246]RX on freq 923900000 Hz at DR 10
292 [5957278]rxTimeOut
293 [5958257]RX on freq 923300000 Hz at DR 8
294 [5958595]rxDone
295 Rssi= -37
296 Receive data
Xiaoling 3.8 297 (% style="color:#037691" %)**2:3132333435363738**(%%) ~-~-> ASCII string "12345678"
Xiaoling 1.10 298 )))
Xiaoling 1.2 299
Xiaoling 3.8 300
Xiaoling 1.3 301 = 3. Example 1: Communicate with LT-22222-L =
Xiaoling 1.2 302
Xiaoling 14.8 303
Xiaoling 1.2 304 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]]
305
Xiaoling 1.10 306 (% class="box" %)
307 (((
Xiaoling 14.8 308 //#!/bin/sh
Xiaoling 1.2 309 # This scripts shows how to use LPS8/LG308/DLOS8 to communicate with two LoRaWAN End Nodes, without the use of internet or LoRaWAN server
310 #
Xiaoling 1.10 311 # Hardware Prepare:
312 # 1. LT-22222-L x 2, both are configured to work in
313 #   a) Class C ;
314 # b) ABP Mode ;
Xiaoling 1.2 315 # c) AT+Mod=1
Xiaoling 1.10 316 # 2. LPS8,
317 #   a) Firmware version >
318 #   b) Input the LT-22222-L keys in LPS so LPS8 can talk with them.
319 #   c) Lorawan server choose built-in
320 #   d) in Custom page, select custom script to point to this script. (put this script in /etc/iot/scripts directory)
Xiaoling 1.2 321 #
Xiaoling 1.10 322 # How it works?
323 #   a) Devices 1 sends a uplink payload to LPS8. LPS8 will get the DI1 and DI2 info from the payload
324 #   b) LPS8 will send a message to Device 2 to set the Device2 DO1 = Device1 DI1, and Device DO2 = Device DI2.
325 #   c) Device2 will change DO1 and DO2 to according to the message from LPS8, and send back a message to LPS8 with the its DO1
326 #   and DO2 value. LPS8 will ask Device1 to change its DO1 to same as Device 2, and change the DO2 to the same as Device 2.
327 #   ( The purpose of this step is to show that the Device2 has already do the change there).
328 #
329 #  For example: If current status of Device1 and Device2 leds shows:
330 #  Device1: DI1: ON, DI2: ON , DO1: OFF,  DO2: OFF
331 #  Device2: DI1: OFF, DI2: OFF , DO1: OFF,  DO2: OFF
332 #
333 #  Step2  will cause below change:
334 #  Device1: DI1: ON, DI2: ON , DO1: OFF,  DO2: OFF
335 #  Device2: DI1: OFF, DI2: OFF , DO1: ON,  DO2: ON
336
337 #  Step3 will cause below change:
338 #  Device1: DI1: ON, DI2: ON , DO1: ON,  DO2: ON
339 #  Device2: DI1: OFF, DI2: OFF , DO1: ON,  DO2: ON
340 #  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
Xiaoling 14.8 341 #  whether the Device 2 has been changed.//
Xiaoling 1.10 342 )))
Xiaoling 1.2 343
Xiaoling 16.6 344
Xiaoling 19.2 345 (% style="color:blue" %)**1. Input keys**
Xiaoling 1.2 346
Xiaoling 19.2 347
Xiaoling 5.2 348 [[image:image-20220527162450-3.png]]
Xiaoling 1.2 349
350 Input Keys in LPS8
351
Xiaoling 5.2 352
Xiaoling 1.2 353
Xiaoling 19.2 354 (% style="color:blue" %)**2. Make sure the LPS8 and LT use the same frequency bands, choose EU868 in this test.**
Xiaoling 16.6 355
Xiaoling 1.2 356
Xiaoling 19.2 357 (% style="color:blue" %)**3. Choose Built-in server**
358
359
Xiaoling 5.2 360 [[image:image-20220527162518-4.png]]
Xiaoling 1.2 361
362 Choose Built-in server
363
Xiaoling 5.2 364
Xiaoling 1.2 365
Xiaoling 19.2 366 (% style="color:blue" %)**4. Run the script.**
367
368
Xiaoling 18.2 369 [[image:image-20220722115213-2.png]]
Xiaoling 1.2 370
371 Run the script
372
Xiaoling 7.2 373
Xiaoling 1.2 374
Xiaoling 19.2 375 (% style="color:blue" %)**5. Output:**
376
377
Xiaoling 18.2 378 [[image:image-20220722115133-1.png]]
Xiaoling 1.2 379
380 Output from LPS8
381
382
Xiaoling 1.3 383 = 4. Example 2: Communicate to TCP Server =
Xiaoling 1.2 384
Xiaoling 14.8 385
Xiaoling 10.2 386 [[image:image-20220527162648-7.png]]
Xiaoling 1.2 387
388 Network Structure
389
390
391 Full instruction video inlcude how to write scripts to fit server needed is here:
392
Xiaoling 10.2 393 (% style="color:#037691" %)**Video Instruction**(%%): **[[https:~~/~~/youtu.be/-nevW6U2TsE>>url:https://youtu.be/-nevW6U2TsE]]**
Xiaoling 1.2 394
Xiaoling 21.3 395 (% style="display:none" %) (%%)
Xiaoling 1.2 396
Xiaoling 10.2 397 (% style="color:red" %)**Note: Firmware version must be higher than lgw-5.4.1607519907**
398
Xiaoling 14.8 399
Xiaoling 1.2 400 Assume we already set up ABP keys in the gateway:
401
Xiaoling 10.2 402 [[image:image-20220527162852-8.png]]
Xiaoling 1.2 403
404 Input Keys in LPS8
405
Xiaoling 10.2 406
Xiaoling 1.2 407
Xiaoling 19.2 408 (% style="color:blue" %)**run socket tool in PC**
Xiaoling 14.8 409
Xiaoling 19.2 410
Xiaoling 10.2 411 [[image:image-20220527163028-9.png]]
Xiaoling 1.2 412
Xiaoling 10.2 413
Xiaoling 1.2 414 Socket tool
415
416
417
Xiaoling 19.2 418 (% style="color:blue" %)**Input Server address and port**
Xiaoling 14.8 419
Xiaoling 19.2 420
Xiaoling 11.2 421 [[image:image-20220527163106-10.png]]
Xiaoling 1.2 422
423 Input Server address and port
424
425
426
Xiaoling 19.2 427 (% style="color:blue" %)**See value receive in socket tool:**
Xiaoling 14.8 428
Xiaoling 19.2 429
Xiaoling 21.3 430 [[image:image-20220527163144-11.png||height="502" width="1371"]]
Xiaoling 1.2 431
432 value receive in socket tool
433
Xiaoling 14.8 434
Xiaoling 1.2 435 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.
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