Skip to Content

Wiki source code of Notes for ChirpStack

Version 108.8 by Xiaoling on 2022/07/23 14:06
Hide last authors
Xiaoling 108.4 1 **~ Table of Contents:**
Xiaoling 1.2 2
Xiaoling 1.1 3 {{toc/}}
4
Xiaoling 86.4 5
6
7
Xiaoling 108.4 8 = 1.  Introduction =
Xiaoling 1.1 9
Xiaoling 108.4 10
Kilight Cao 53.1 11 (% style="color:black" %)The ChirpStack open-source LoRaWAN Network Server stack provides open-source components for LoRaWAN networks And the Chirpstack supports the users in building a private LoRaWAN Server. For more info please refer to this [[link>>url:https://www.chirpstack.io/]]
Xiaoling 1.1 12
Xiaoling 1.5 13 (((
Kilight Cao 51.1 14 (% style="color:black" %)The dragino gateway can connect the ChirpStack server via Semtech UDP or Semtech Basic Station.
Xiaoling 108.4 15
16
Xiaoling 1.5 17 )))
Xiaoling 1.1 18
Xiaoling 108.4 19 (% style="color:blue" %)**Prerequisite:**
Xiaoling 1.1 20
Xiaoling 108.4 21 **1) Have a Chirstack Server.**
Xiaoling 1.1 22
Xiaoling 54.2 23 [[image:image-20220525100058-1.png]]
Xiaoling 1.1 24
Xiaoling 1.2 25 ChirpStack home page
Xiaoling 1.1 26
Xiaoling 54.2 27
Xiaoling 1.1 28
Xiaoling 108.4 29 **2) Gateway model support**
30
Xiaoling 1.2 31 (% class="box" %)
32 (((
Xiaoling 1.5 33 (((
Xiaoling 1.2 34 Semtech UDP : **All Model**
Xiaoling 108.4 35 Basic Station : [[LIG16>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/171-lig16.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]] [[LPS8>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/148-lps8.html]]
36 (% style="color:red" %)**Note** (%%): the firmware needs >[[lgw~~-~~-build-v5.4.1640315898>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/LPS8/Firmware/Release/]]  if use the Bais station
Xiaoling 1.2 37 )))
Xiaoling 1.5 38 )))
Xiaoling 1.1 39
Xiaoling 86.5 40
41
Xiaoling 108.4 42 = 2.  Semtech UDP =
Xiaoling 1.1 43
Xiaoling 108.4 44 == 2.1  Step 1. Add the Network-servers ==
Xiaoling 1.1 45
Xiaoling 108.4 46
Xiaoling 1.2 47 The network-Servers address varies depending on the ChirpStack server setup environment
Xiaoling 1.1 48
Xiaoling 1.3 49 (% class="box" %)
50 (((
Xiaoling 108.5 51 Windows       ~-~->  Network-server server *  :  localhost:8000
52 Linux  ~-~->  Network-server server *  :  chirpstack-network-server:8000
Xiaoling 1.3 53 )))
Xiaoling 1.1 54
Xiaoling 108.4 55
Xiaoling 108.6 56 (% style="color:red" %)**If the user cannot add network-Servers, re-check the ChirpStack code or the server building process.**
Xiaoling 1.1 57
Xiaoling 108.4 58
Xiaoling 87.2 59 [[image:image-20220531171609-1.png]]
Xiaoling 1.2 60
61 Add the Network-servers
62
Xiaoling 84.2 63
Xiaoling 108.4 64
Xiaoling 108.6 65 == 2.2  Step 2. Create Gateway-profiles ==
Xiaoling 1.2 66
Xiaoling 108.6 67
Xiaoling 88.2 68 [[image:image-20220531171651-2.png]]
Xiaoling 1.2 69
70 Create Gateway-profiles
71
Xiaoling 84.2 72
Xiaoling 1.2 73
Xiaoling 108.6 74 == 2.3  Step 3. Create Service-profiles ==
75
76
Xiaoling 89.2 77 [[image:image-20220531171809-3.png]]
Xiaoling 1.2 78
79 Create Service-profiles
80
Xiaoling 89.3 81
Xiaoling 1.2 82 In Step 3. Create Service-profiles, the above parameters can be set. If necessary, you can set them by yourself. This is only an example.
83
Xiaoling 1.4 84 (% style="color:red" %)**Note : Before add the gateway, the user needs to complete the preceding three steps.**
Xiaoling 1.2 85
Xiaoling 84.2 86 If the user has completed the preceding steps, proceed to the next step.(% style="display:none" %)
Xiaoling 1.2 87
Xiaoling 84.2 88
Xiaoling 108.6 89
Xiaoling 108.7 90 == 2.4  Step 4. Add the gateway ==
Xiaoling 1.2 91
Xiaoling 108.7 92
Xiaoling 1.2 93 The example gateway id is: a840411e96744150
94
Xiaoling 1.5 95 (((
Xiaoling 1.4 96 (% style="color:red" %)**Note : The Gateway EUI and server addresses must match the ChirpStack configuration.**
Xiaoling 108.7 97
98
Xiaoling 1.5 99 )))
Xiaoling 1.2 100
Xiaoling 90.2 101 [[image:image-20220531171923-4.png]](% style="display:none" %)
Xiaoling 1.2 102
103 Add the gateway
104
Xiaoling 108.7 105
106
Xiaoling 91.2 107 [[image:image-20220531172031-5.png]]
Xiaoling 1.2 108
109 Configure the gateway
110
Xiaoling 84.2 111
Xiaoling 1.2 112
Xiaoling 108.8 113 == 2.5  Step 5. Checking gateway Status ==
114
115
Xiaoling 92.2 116 [[image:image-20220531172158-6.png]](% style="display:none" %)
Xiaoling 1.2 117
Xiaoling 84.2 118
Xiaoling 108.8 119
Xiaoling 1.2 120 gateway Status
121
Xiaoling 93.2 122 [[image:image-20220531172304-7.png]]
Xiaoling 1.2 123
124 gateway Status
125
Xiaoling 86.6 126
Xiaoling 108.8 127
Kilight Cao 9.1 128 = 3. Gateway Registration for Basics Station =
Xiaoling 1.2 129
Xiaoling 108.8 130
Xiaoling 93.3 131 == 3.1 Introduction ==
Kilight Cao 9.1 132
Xiaoling 108.8 133
Kilight Cao 9.1 134 The [[Semtech Basic Station>>url:https://doc.sm.tc/station/]] backend implements the [[LNS protocol>>url:https://doc.sm.tc/station/tcproto.html]]. It exposes a WebSocket handler to which Basic Station powered gateways can connect.
135
136 ChirpStack Open-Source LoRaWAN® Network Server needs to set up a configuration that can use Semtech BasicStation.
137
138
Xiaoling 108.8 139 (% style="color:blue" %)**Below list the support products and Requirements:**
140
Kilight Cao 9.1 141 1. LoRaWAN Gateway model: [[LIG16>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/171-lig16.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]] ,[[LPS8>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/148-lps8.html]]
142 1. Firmware version since :[[lgw~~-~~-build-v5.4.1651822913>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/LPS8/Firmware/Test_Firmware/lgw--build-v5.4.1651822913-20220506-1543/]]
143
144
Xiaoling 108.8 145
146
147 (% style="color:blue" %)**How to set up chirpStack Basic Station**
148
Kilight Cao 9.1 149 Users can check out the ChirpStack Basic Station [[link>>https://www.chirpstack.io/gateway-bridge/backends/basic-station/]] and [[forum>>https://forum.chirpstack.io/search?q=basic%20station]]
150
151
Xiaoling 108.8 152 (% style="color:blue" %)**What do you need to prepare**
153
Kilight Cao 9.1 154 A gateway that can access the internet normally
155
Xiaoling 86.7 156
Xiaoling 108.8 157
Xiaoling 93.3 158 == 3.2 Add Gateway ==
Kilight Cao 9.1 159
Xiaoling 20.2 160 [[image:image-20220524164205-10.png]]
Kilight Cao 9.1 161
Xiaoling 86.8 162
Xiaoling 93.3 163 == 3.3 Access the gateway GUI ==
Kilight Cao 9.1 164
165 Access the gateway GUI interface of LoRaWAN~-~->LoRaWAN ~-~- Basic Station
166
Xiaoling 20.2 167 [[image:image-20220524164319-11.png]]
Kilight Cao 9.1 168
169 User need to Choose the ChirpStack/Senet ~-~- Basic Station , input Server URI and Upload the TLS Certificate
170
171 (% class="box" %)
172 (((
173 Service Provider  ~-~->  Choose the ChirpStack/Senet ~-~- Basic Station
174
175 LNS URI  ~-~->  Enter the LNS URI address, For example : wss:~/~/xxxx.chirpstack.com:433 or ws:~/~/xxxx.chirpstack.com:3001
176
177 LNS TLS trust  ~-~->  Upload the TLS Certificate
178 )))
179
180 (% class="wikigeneratedid" %)
Xiaoling 20.2 181 [[image:image-20220524164341-12.png]]
Kilight Cao 9.1 182
Xiaoling 86.9 183
Xiaoling 93.4 184 == 3.4 Start Station ==
Kilight Cao 9.1 185
186 When the user has finished the configuration, Please click Sace&Apply to start station to connect ChirpStack
187
Xiaoling 86.10 188
Xiaoling 93.4 189 == 3.5 Successful Connection ==
Kilight Cao 9.1 190
191 If user completes the above steps, which will see live date in the ChirpStack.
192
Xiaoling 23.2 193 [[image:image-20220524164448-13.png]]
Kilight Cao 9.1 194
Xiaoling 86.11 195
Xiaoling 93.4 196 == 3.6 Trouble Shooting ==
Kilight Cao 9.1 197
198 User can check the station log in the logread/system log page.
199
Xiaoling 95.2 200 [[image:image-20220531172837-8.png]]
Kilight Cao 9.1 201
Xiaoling 86.13 202
Kilight Cao 9.1 203 and recode the station log in the system/Recode log page.
204
Xiaoling 95.2 205 [[image:image-20220531172857-9.png]]
Kilight Cao 9.1 206
Xiaoling 86.12 207
Xiaoling 1.2 208 = 4. Downlink =
209
210 == 4.1 Chirpstack Downlink Note ==
211
Xiaoling 108.2 212 [[image:image-20220601102543-2.png]]
Xiaoling 1.2 213
214 Convert the data to Base64
215
Xiaoling 86.14 216
Xiaoling 96.2 217 [[image:image-20220531173236-10.png]]
Xiaoling 1.2 218
219 Check ChripStack downlink DataRate
220
Xiaoling 86.15 221
Xiaoling 65.2 222 [[image:image-20220525101326-11.png]]
Xiaoling 1.2 223
224 Make sure the RX2DR is the same in the end node
225
Xiaoling 86.16 226
Xiaoling 1.2 227 == 4.2 Loraserver Downlink Note ==
228
229 User can use MQTT to send downlink payload to ChirpStack to perform downstream to LoRaWAN End
230
Xiaoling 1.5 231 (((
Xiaoling 1.2 232 Below is examples:
Xiaoling 1.5 233 )))
Xiaoling 1.2 234
Xiaoling 1.4 235 (% class="box" %)
236 (((
237 Connect to your server via MQTT：
238 MQTT Client ID: Any   
239 Protocol：mqtt/tcp   Server IP：loraserver_ip:1883
Xiaoling 1.2 240 User name: User name Password: password
Xiaoling 1.4 241 )))
Xiaoling 1.2 242
Xiaoling 97.2 243 [[image:image-20220531173419-11.png]]
Xiaoling 1.2 244
Xiaoling 1.5 245 (((
Xiaoling 1.2 246 MQTT Connect to ChirpStack
Xiaoling 86.17 247
248
Xiaoling 1.5 249 )))
Xiaoling 1.2 250
Xiaoling 1.5 251 (((
Xiaoling 1.2 252 After connect
Xiaoling 1.5 253 )))
Xiaoling 1.2 254
Xiaoling 1.4 255 (% class="box" %)
256 (((
257 Subscribe : Format：application/ID/device/ Device EUI/rx
Xiaoling 1.2 258 Example: application/7/device/00aedb3da649cb23/rx
Xiaoling 1.4 259 )))
Xiaoling 1.2 260
Xiaoling 1.4 261 (% class="box" %)
262 (((
263 Publish:
Xiaoling 1.2 264 Format: Top: application/ID/device/ Device EUI/tx
265 Payload: {"confirmed":true or false,"fPort":XX,"data":"xxxx"}
266 Example: Top: application/7/device/00aedb3da649cb23/tx
267 Payload: {"confirmed":true,"fPort":2,"data":"AwEB"}
Xiaoling 1.4 268 )))
Xiaoling 1.2 269
Xiaoling 98.2 270 [[image:image-20220531173519-12.png]]
Xiaoling 1.2 271
272 MQTT Connect to ChirpStack
273
Xiaoling 86.18 274
Xiaoling 1.4 275 (((
276 (% style="color:red" %)Note: Chirpstack use base64 to downlink, so need to convert the downlink payload from HEX to base64 [[https:~~/~~/base64.us/>>url:https://base64.us/]]
277 )))
Xiaoling 1.2 278
Xiaoling 99.2 279 [[image:image-20220531173601-13.png]]
Xiaoling 1.2 280
281 Choose to Use Hex for Encode
282
Xiaoling 86.19 283
Xiaoling 1.2 284 If we want send downstream hex 030101 to end node, the BASE64 payload is AwEB
285
Xiaoling 100.2 286 [[image:image-20220531173658-14.png]]
Xiaoling 1.2 287
Xiaoling 1.5 288 (((
Xiaoling 1.2 289 Downlink payload encode javescript code: 可以在网站上运行以下Javsscript代码：
Xiaoling 1.5 290 )))
Xiaoling 1.2 291
Xiaoling 1.4 292 (% class="box" %)
293 (((
294 function sha1_to_base64(sha1)
Xiaoling 1.2 295 {
296 var digits="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
297 var base64_rep = "";
298 var cnt = 0;
299 var bit_arr = 0;
300 var bit_num = 0;
Xiaoling 1.5 301 \\ for(var n = 0; n < sha1.length; ++n)
Xiaoling 1.2 302 {
303 if(sha1[n] >= 'A' && sha1[n] <= 'Z')
304 {
305 ascv = sha1.charCodeAt(n) - 55;
306 }
307 else if(sha1[n] >= 'a' && sha1[n] <= 'z')
308 {
309 ascv = sha1.charCodeAt(n) - 87;
310 }
311 else
312 {
313 ascv = sha1.charCodeAt(n) - 48;
314 }
Xiaoling 1.5 315 \\ bit_arr = (bit_arr << 4) | ascv;
Xiaoling 1.2 316 bit_num += 4;
317 if(bit_num >= 6)
318 {
Xiaoling 1.4 319 bit_num -= 6;        
Xiaoling 1.2 320 base64_rep += digits[bit_arr >>> bit_num];
Xiaoling 1.4 321 bit_arr &= ~~(-1 << bit_num);
Xiaoling 1.2 322 }
323 }
Xiaoling 1.5 324 \\ if(bit_num > 0)
Xiaoling 1.2 325 {
326 bit_arr <<= 6 - bit_num;
327 base64_rep += digits[bit_arr];
328 }
Xiaoling 1.5 329 \\ var padding = base64_rep.length % 4;   
330 \\ if(padding > 0)
Xiaoling 1.2 331 {
332 for(var n = 0; n < 4 - padding; ++n)
333 {
334 base64_rep += "=";
335 }
336 }
337 return base64_rep;
338 }
Xiaoling 1.5 339 \\console.log(sha1_to_base64("data"));
340 \\data is downlink payload required by end node.
Xiaoling 1.4 341 e.g console.log(sha1_to_base64("030101"));
342 ​result: AwEB     
Xiaoling 1.2 343 AwEB is the 0x030101's base 64 Encode.
Xiaoling 1.5 344 \\​e.g console.log(sha1_to_base64("030000"));
Xiaoling 1.4 345 ​result: AwAA     
346 AwAA is 0x030000's base 64 Encode.
347 )))
Xiaoling 1.2 348
Xiaoling 86.21 349
Xiaoling 1.2 350 == 4.3 Add the decode function in Chirpstack for the payload ==
351
352 User enters the payload code according to the steps.
353
Xiaoling 101.2 354 [[image:image-20220531173754-15.png]]
Xiaoling 1.2 355
356
Xiaoling 102.2 357 [[image:image-20220531173856-16.png]]
Xiaoling 1.2 358
Xiaoling 102.2 359
Xiaoling 106.2 360 [[image:image-20220531174120-20.png]]
Xiaoling 84.2 361
Xiaoling 105.2 362 [[image:image-20220531174046-19.png]]
Xiaoling 1.2 363
Xiaoling 86.22 364
Xiaoling 1.2 365 = 5. Multiply Uplink in ChirpStack =
366
Xiaoling 1.4 367 (((
Xiaoling 1.2 368 nbtrans field is the value to determine the re-transmission time for unconfirmed uplink data.
Xiaoling 1.4 369 )))
Xiaoling 1.2 370
Xiaoling 1.4 371 (((
Xiaoling 1.2 372 ChirpStack will auto adjust nbtrans according to uplink rssi. [[link to source>>url:https://github.com/brocaar/chirpstack-network-server/blob/master/internal/adr/adr.go]]
Xiaoling 1.4 373 )))
Xiaoling 1.2 374
Xiaoling 86.2 375 [[image:image-20220526091912-7.png]]
Xiaoling 1.2 376
Xiaoling 1.5 377 (((
Xiaoling 1.2 378 nbtrans is a field of ADR message, in unconfirm mode, it tells end node how many time it needs to transmit for every frame.
Xiaoling 1.5 379 )))
Xiaoling 1.2 380
Xiaoling 76.2 381 [[image:image-20220525104359-21.png]]
Xiaoling 1.2 382
Xiaoling 1.4 383 (((
Xiaoling 1.2 384 Above behaviour will cause the platform shows below two cases of error:
Xiaoling 1.4 385 )))
Xiaoling 1.2 386
Xiaoling 1.4 387 (((
Xiaoling 1.2 388 Error of duplicate Frame Counter
Xiaoling 1.4 389 )))
Xiaoling 1.2 390
Xiaoling 76.2 391 [[image:image-20220525104437-22.png]]
Xiaoling 1.2 392
Xiaoling 86.23 393
Xiaoling 1.2 394 Duplicate transmission in short time
395
Xiaoling 107.2 396 [[image:image-20220601102430-1.png]]
Xiaoling 1.2 397
Xiaoling 86.24 398
Xiaoling 1.2 399 == 5.1 Solution ==
400
401 This example uses the Windows version as a template, other versions can refer to this. Similiar reference: [[https:~~/~~/confluence.alitecs.de/plugins/servlet/mobile?contentId=79790102#content/view/79790102>>url:https://confluence.alitecs.de/plugins/servlet/mobile?contentId=79790102#content/view/79790102]]
402
Xiaoling 1.5 403 (((
Xiaoling 1.2 404 ~1. Install the GO compilation environment: Download the corresponding version of the Go compiler at [[https:~~/~~/go.dev/dl/>>url:https://go.dev/dl/]] and install it.
Xiaoling 1.5 405 )))
Xiaoling 1.2 406
Xiaoling 79.2 407 [[image:image-20220525104532-24.png]]
Xiaoling 1.2 408
Xiaoling 86.25 409
Xiaoling 1.2 410 installation path:
411
Xiaoling 79.2 412 [[image:image-20220525104554-25.png]]
Xiaoling 1.2 413
Xiaoling 86.25 414
Xiaoling 1.5 415 (((
Xiaoling 1.2 416 2. Environment variable settings:.
Xiaoling 1.5 417 )))
Xiaoling 1.2 418
Xiaoling 1.5 419 (((
Xiaoling 1.2 420 1) Open Computer -> Properties -> Advanced System Settings -> Environment Variables and add a "new" system variable:
Xiaoling 1.5 421 )))
Xiaoling 1.2 422
Xiaoling 1.5 423 (((
Xiaoling 1.2 424 2)Set the variable name GOROOT and the variable value C:\Go\ (installation directory)
Xiaoling 1.5 425 )))
Xiaoling 1.2 426
Xiaoling 43.2 427 [[image:image-20220524165433-33.png]]
Xiaoling 1.2 428
Xiaoling 86.26 429
Xiaoling 1.2 430 3)Modify the system variable Path and add C:\Go\bin\:
431
Xiaoling 43.2 432 [[image:image-20220524165452-34.png]]
Xiaoling 1.2 433
Xiaoling 106.3 434
Xiaoling 1.2 435 User variable setting file generation directory: D:\go:
436
Xiaoling 43.2 437 [[image:image-20220524165517-35.png]]
Xiaoling 1.2 438
Xiaoling 86.27 439
Xiaoling 1.2 440 3. Modify the ADR configuration file according to your own needs, adr.setting.go is an example of the ADR configuration file.
441
442 The name of the plugin: Example ADR plugin:
443
Xiaoling 48.2 444 [[image:image-20220524165540-36.png]]
Xiaoling 1.2 445
446 Set Nbtrans: Nbtrans=1 (Nbtrans is the number of retransmissions, if it is 1, no retransmission, it is recommended to be 1). To enable it, you need to uncomment.
447
Xiaoling 48.2 448 [[image:image-20220524165557-37.png]]
Xiaoling 1.2 449
Xiaoling 86.28 450
Xiaoling 1.2 451 4. Compile the ADR configuration file and generate the exe file.
452
453 1) Create a folder named adr-setting
454
455 2) Open the adr-setting folder
456
457 3) Put adr.setting.go in this folder.
458
459 4) Open the computer cmd and run the following commands in sequencecd adr-setting
460
461 go mod init adr-setting
462
463 go get github.com/brocaar/chirpstack-network-server/v3/adr
464
465 go get github.com/hashicorp/go-plugin
466
467 go get adr-setting
468
469 go build
470
471 5) Finally generate this file：
472
Xiaoling 48.2 473 [[image:image-20220524165623-38.png]]
Xiaoling 1.2 474
Xiaoling 86.29 475
Xiaoling 1.2 476 5. Add the plugin and run the plugin.
477
Xiaoling 1.5 478 (((
Xiaoling 1.2 479 The exe file generated in the previous step is placed in the same root directory as chirpstack-network-server.toml, and the ADR plugin is added to the toml file. The location of the addition is as follows:
Xiaoling 1.5 480 )))
Xiaoling 1.2 481
Xiaoling 48.2 482 [[image:image-20220524165641-39.png]]
Xiaoling 1.2 483
Xiaoling 1.4 484 (((
Xiaoling 1.5 485 (((
Xiaoling 1.2 486 For example: adr_plugins=[“adr-setting”]
Xiaoling 1.4 487 )))
Xiaoling 1.5 488 )))
Xiaoling 1.2 489
Xiaoling 1.4 490 * (((
Xiaoling 1.5 491 (((
Xiaoling 1.4 492 Adding a single plugin format is adr_plugins=["filename"]
493 )))
Xiaoling 1.5 494 )))
Xiaoling 1.2 495
Xiaoling 1.4 496 * (((
Xiaoling 1.5 497 (((
Xiaoling 1.4 498 Adding multiple plugins The format is adr_plugins=["file name 1", "file name 2",...]
499 )))
Xiaoling 1.5 500 )))
Xiaoling 1.2 501
Xiaoling 1.4 502 (((
Xiaoling 1.5 503 (((
Xiaoling 1.2 504 Finally, re-run chirpstack-network-server.exe, and then select the plugin you just compiled in Device-profiles,
Xiaoling 1.4 505 )))
Xiaoling 1.5 506 )))
Xiaoling 1.2 507
Xiaoling 79.2 508 [[image:image-20220525104647-26.png]]
Xiaoling 1.2 509
510 Finish.
511
Xiaoling 86.30 512
Xiaoling 1.2 513 = 6. Trouble Shooting =
514
515 == 6.1 MIC Mismatch or MIC Failed ==
516
Xiaoling 1.4 517 (((
Xiaoling 1.2 518 When the device is registered or the device is working normally, the problem of MIC mismatch and MIC failed occurs.
Xiaoling 1.4 519 )))
Xiaoling 1.2 520
Xiaoling 1.4 521 (((
Xiaoling 1.2 522 Under normal circumstances, users need to change the APPKEY to solve this problem.
Xiaoling 1.4 523 )))