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Last modified by Xiaoling on 2025/04/27 16:48
From version 68.4
edited by Xiaoling
on 2022/10/09 16:08
Change comment: There is no comment for this version
To version 53.1
edited by Edwin Chen
on 2022/10/06 18:13
Change comment: Uploaded new attachment "image-20221006181316-1.png", version {1}

Summary

Details

Page properties
Author
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1 -XWiki.Xiaoling
1 +XWiki.Edwin
Content
... ... @@ -98,7 +98,6 @@
98 98  * Tracking: max: 38mA
99 99  
100 100  
101 -
102 102  == 1.3  Features ==
103 103  
104 104  
... ... @@ -118,7 +118,6 @@
118 118  * Datalog
119 119  
120 120  
121 -
122 122  == 1.4  Applications ==
123 123  
124 124  
... ... @@ -126,7 +126,6 @@
126 126  * Human tracking
127 127  
128 128  
129 -
130 130  = 2.1 Use TrackerD =
131 131  
132 132  
... ... @@ -189,93 +189,42 @@
189 189  (% style="color:blue" %)**Step 3:**(%%) TrackerD will auto join to the LoRaWAN network. After join success, TrackerD will start to upload message to IoT server.
190 190  
191 191  
189 += 2.3 Positioning Mode(SMOD) =
192 192  
193 -== 2.3  Positioning Mode(SMOD) ==
191 +* (% style="color:#037691" %)**GPS ONLY(Factory Settings):    **(%%)only get GPS location info.
192 +* (% style="color:#037691" %)**BLE ONLY:              **(%%)Only obtain iBeacon info via BLE. Design for Indoor tracking.
193 +* (% style="color:#037691" %)**GPS/BLE Hybrid:   **(%%)Combination for Indoor and Outdoor tracking.
194 194  
195 +User can switch modes by [[changing SMOD>>||anchor="H3.2.7SetPositioningMode"]].
195 195  
196 -Users can set TrackerD to different Positioning Mode for different applications. Below mod are supported.
197 197  
198 -* (% style="color:#037691" %)**GPS ONLY(Factory Settings):    **(%%)only get and uplink GPS location info.
199 -* (% style="color:#037691" %)**BLE ONLY:              **(%%)Only obtain iBeacon info via BLE and uplink. Design for Indoor tracking.
200 -* (% style="color:#037691" %)**GPS/BLE Hybrid:   **(%%)Combination for Indoor and Outdoor tracking.Devices will try to search BLE iBeacon first. If device can't find the iBeacon, it will use GPS for positioning.
201 201  
202 -Users can switch modes by [[changing SMOD>>||anchor="H3.2.7SetPositioningMode"]].
199 +== 2.3 Uplink Payload ==
203 203  
204 204  
202 +=== 2.3.1 Uplink FPORT~=5, Device Status ===
205 205  
206 -== 2.4  Uplink Payload ==
207 207  
208 208  
209 -=== 2.4.1 Uplink FPORT~=5, Device Status ===
206 +=== 2.3.2 Uplink FPORT~= , Realtime GNSS Positioning ===
210 210  
211 211  
212 -Uplink the device configures with FPORT=5. Once LGT92 Joined the network, it will uplink this message to the server. After first uplink, LHT52 will uplink Device Status every 12 hours.
209 +The default uplink payload includes totally 11 bytes. (User can use AT+MOD=0 to enable the Temperature and humidity sensor to hum/tem info from accelerometer. When accelerometer info is enable, total payload will be 15 bytes, please note 15 bytes won't work on DR0 on US915/AU915 frequency band. )
213 213  
214 214  
215 -(% border="1.5" style="background-color:#ffffcc; color:green; width:520px" %)
216 -|=(% scope="row" style="width: 108px;" %)**Size(bytes)**|=(% style="width: 82px;" %)**1**|=(% style="width: 83px;" %)**2**|=(% style="width: 94px;" %)**1**|=(% style="width: 84px;" %)**1**|=(% style="width: 44px;" %)2|=(% style="width: 63px;" %)**2**|=(% style="width: 60px;" %)1
217 -|=(% style="width: 108px;" %)**Value**|(% style="width:82px" %)Sensor Model|(% style="width:83px" %)Firmware Version|(% style="width:94px" %)Frequency Band|(% style="width:84px" %)Sub-band|(% style="width:44px" %)BAT|(% style="width:63px" %)SMOD|(% style="width:60px" %)Status
218 -
219 -[[image:1665301570342-765.png]]
220 -
221 -
222 -Example Payload (FPort=5):  [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT52%20-%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220621105116-11.png?rev=1.1||alt="image-20220621105116-11.png"]]
223 -
224 -**Sensor Model**: For TrackerD, this value is 0x13.
225 -
226 -**Firmware Version**: 0x0100, Means: v1.0.0 version.
227 -
228 -**Frequency Band**:
229 -
230 -*0x01: EU868
231 -
232 -*0x02: US915
233 -
234 -*0x03: IN865
235 -
236 -*0x04: AU915
237 -
238 -*0x05: KZ865
239 -
240 -*0x06: RU864
241 -
242 -*0x07: AS923
243 -
244 -*0x08: AS923-1
245 -
246 -*0x09: AS923-2
247 -
248 -*0x0a: AS923-3
249 -
250 -**Sub-Band**: value 0x00 ~~ 0x08(only for CN470, AU915,US915. Others are0x00)
251 -
252 -**BAT**: shows the battery voltage for TrackerD.
253 -
254 -Ex1: 0x0B3A = 2874mV
255 -
256 -Use can also get the Device Status uplink through the downlink command:
257 -
258 -
259 -
260 -=== 2.4.2 Uplink FPORT~=2, Realtime GNSS Positioning + Temperature & Humidity ===
261 -
262 -
263 -User can use **AT+SMOD=1,0** to enable uploading on-board Temperature and humidity values, and the total payload will be 15 bytes, please note that 15 bytes won't work on DR0 on US915/AU915 frequency band.
264 -
265 -
266 266  (% border="1.2" cellspacing="3" style="background-color:#ffffcc; color:green; width:480px" %)
267 267  |=(% scope="row" style="width: 50px;" %)(((
268 268  **Size(bytes)**
269 -)))|(% style="width:60px" %)4|(% style="width:70px" %)4|(% style="width:80px" %)2|(% style="width:73px" %)1|(% style="width:40px" %)(((
270 -2
215 +)))|(% style="width:60px" %)4|(% style="width:70px" %)4|(% style="width:80px" %)2|(% style="width:50px" %)1|(% style="width:88px" %)(((
216 +2(optional)
271 271  )))|(% style="width:87px" %)(((
272 -2
218 +2(optional)
273 273  )))
274 274  |=(% style="width: 69px;" %)**Value**|(% style="width:76px" %)[[Latitude>>||anchor="HLocationinfo:"]]|(% style="width:87px" %)[[Longitude>>||anchor="HLocationinfo:"]]|(% style="width:76px" %)(((
275 275  [[Alarm & BAT>>||anchor="HAlarm26BAT:"]]
276 -)))|(% style="width:73px" %)[[FLAG>>||anchor="HFLAG:"]]|(% style="width:40px" %)[[Hum>>||anchor="HHum:"]]|(% style="width:87px" %)[[Tem>>||anchor="HTem:"]]
222 +)))|(% style="width:52px" %)[[FLAG>>||anchor="HFLAG:"]]|(% style="width:88px" %)[[Hum>>||anchor="HHum:"]]|(% style="width:87px" %)[[Tem>>||anchor="HTem:"]]
277 277  
278 -[[image:1665301636888-168.png]]
224 +[[image:1664501958445-288.png]]
279 279  
280 280  
281 281  ==== (% style="color:blue" %)**Alarm & BAT:**(%%) ====
... ... @@ -284,17 +284,11 @@
284 284  |=(% scope="row" style="width: 50px;" %)**Size(bit)**|(% style="width:50px" %)1 bit|(% style="width:80px" %)1bit|(% style="width:50px" %)14bits
285 285  |=(% style="width: 72px;" %)**Value**|(% style="width:67px" %)reserve|(% style="width:118px" %)Alarm Indicate|(% style="width:63px" %)[[BAT>>||anchor="HBAT:"]] 
286 286  
287 -(% class="wikigeneratedid" %)
288 -==== ====
289 -
290 -(% class="wikigeneratedid" %)
291 -==== ====
292 -
293 293  ==== (% style="color:blue" %)**FLAG:**(%%) ====
294 294  
295 295  (% border="1.2" cellspacing="3" style="background-color:#ffffcc; color:green; width:250px" %)
296 -|=(% scope="row" style="width: 50px;" %)**Size(bit)**|(% style="width:50px" %)2bits|(% style="width:50px" %)1bit
297 -|=(% style="width: 79px;" %)**Value**|(% style="width:55px" %)[[MOD>>||anchor="H3.2.7SetPositioningMode"]]|(% style="width:47px" %)[[LON>>||anchor="HLON:"]]
236 +|=(% scope="row" style="width: 50px;" %)**Size(bit)**|(% style="width:50px" %)2bits|(% style="width:50px" %)1bit|(% style="width:100px" %)5 bits
237 +|=(% style="width: 79px;" %)**Value**|(% style="width:55px" %)[[MOD>>||anchor="H3.2.7SetPositioningMode"]]|(% style="width:47px" %)[[LON>>||anchor="HLON:"]]|(% style="width:140px" %)Firmware version 
298 298  
299 299  **Example:** Payload: 0x02863D68 FAC29BAF 4B45 60 0202 011A 
300 300  
... ... @@ -305,19 +305,21 @@
305 305  * Longitude: FAC29BAF  ⇒ //if (0x//FAC29BAF// & 0x80000000 = 1 )~://  //value = (0x//FAC29BAF// – 0x 100000000)/1000000 =//-87.9094//57//
306 306  
307 307  
308 -
309 309  (% style="color:red" %)**Important note:**
310 310  
311 311  1.  When power is low (<2.84v), GPS won't be able to get location info and GPS feature will be disabled and the location field will be filled with 0x0FFFFFFF, 0x0FFFFFFF.
312 312  
313 -2.  In this mode, the total payload will be 15 bytes, while US915/AU915 DR0 accepts only 11 bytes payload. In this case, the payload on server will be ignore and shows as below:
252 +2.  In firmware version v1.5, Roll & Pitch is disabled by default.
314 314  
254 +3.  When enable 9-axis motion sensor, the total payload will be 15 bytes, while US915/AU915 DR0 accept only 11 bytes payload. In this case, the payload on server will be ignore and shows as below:
315 315  
256 +
316 316  [[image:1664502116362-706.png]]
317 317  
318 318  
319 -3.  While GPS can't get location info after timeout(FTIME Parameter), the latitude and longitude will be filled with all 0x00:
320 320  
261 +4.  While GPS can't get location info after timeout(FTIME Parameter), the latitude and longitude will be filled with all 0x00:
262 +
321 321  [[image:1664502166010-515.png]]
322 322  
323 323  
... ... @@ -327,13 +327,12 @@
327 327  Example:  0x4B & 0x40 >> 6 = 0x01
328 328  
329 329  
330 -
331 331  ==== (% style="color:blue" %)**BAT:**(%%) ====
332 332  
333 333  Example:  0x0CDD & 0x3FFF ⇒ 3293 (mV).
334 334  
335 335  (((
336 -The battery info shows the battery voltage, User can use the below mapping to indicate the battery in percentage: \
277 +The battery info shows the current voltage, for (% style="color:blue" %)**TrackerD**(%%) version which powered by li-on battery. User can use below mapping to indicate the battery in percentage: \
337 337  )))
338 338  
339 339  * > 4.0v :  80% ~~ 100%
... ... @@ -343,9 +343,9 @@
343 343  * < 3.39v:  0~~20%
344 344  
345 345  
346 -
347 347  ==== (% style="color:blue" %)**LON:**(%%) ====
348 348  
289 +
349 349  Enable/Disable LED activity for uplink
350 350  
351 351  (((
... ... @@ -368,51 +368,15 @@
368 368  
369 369  
370 370  
371 -=== 2.4.3  Uplink FPORT~=3, Realtime GNSS Positioning (Default Mode) ===
312 +=== 2.3.3 Uplink FPORT~= , History GNSS Positioning ===
372 372  
373 373  
374 -The default uplink payload includes totally 11 bytes. The payload is the first 11 bytes of Uplink FPORT=2, real-time GNSS positioning, (remove the temp and humidity)
375 375  
316 +=== 2.3.4 BLE positioning Payload(Fport2) ===
376 376  
377 -(% border="1.2" cellspacing="3" style="background-color:#ffffcc; color:green; width:480px" %)
378 -|=(% scope="row" style="width: 50px;" %)(((
379 -**Size(bytes)**
380 -)))|(% style="width:60px" %)4|(% style="width:70px" %)4|(% style="width:80px" %)2|(% style="width:73px" %)1
381 -|=(% style="width: 69px;" %)**Value**|(% style="width:76px" %)[[Latitude>>||anchor="HLocationinfo:"]]|(% style="width:87px" %)[[Longitude>>||anchor="HLocationinfo:"]]|(% style="width:76px" %)(((
382 -[[Alarm & BAT>>||anchor="HAlarm26BAT:"]]
383 -)))|(% style="width:73px" %)[[FLAG>>||anchor="HFLAG:"]]
384 384  
385 -(% class="wikigeneratedid" %)
386 -[[image:1665301687277-443.png]]
319 +Different MODE has different payload:  (% style="color:blue" %)**MODE=2**
387 387  
388 -
389 -
390 -=== 2.4.4  Uplink FPORT~=4, History GNSS Positioning ===
391 -
392 -
393 -Set [[PNACKMD=1>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H4.13AutoSendNone-ACKmessages]], and TrackerD will wait for ACK for every uplink, when there is no LoRaWAN network, TrackerD will mark these records with non-ack messages and store the sensor data, and it will send all messages (10s interval) after the network recovery.
394 -
395 -
396 -(% style="color:red" %)**Note for this mode:**
397 -
398 -* a) TrackerD will do an ACK check for data records sending to make sure every data arrive server.
399 -* b) TrackerD will send data in (% style="color:blue" %)**CONFIRMED Mode**(%%) when PNACKMD=1, but TrackerD won't re-transmit the packet if it doesn't get ACK, it will just mark it as a NONE-ACK message. In a future uplink, if TrackerD gets an ACK, TrackerD will consider there is a network connection and resend all NONE-ACK Messages.
400 -
401 -The payload is 15 bytes, as below.
402 -
403 -(% border="1.5" style="background-color:#ffffcc; color:green; width:520px" %)
404 -|=(% scope="row" %)(((
405 -**Size(bytes)**
406 -)))|4|4|2|1|1|1|1|1
407 -|=**Value**|Latitude|Longitude|Year|Month|Day|Hous|Min|Sen
408 -
409 -[[image:image-20221009160309-2.png]]
410 -
411 -
412 -
413 -=== 2.4.5  Uplink FPORT~=6, BLE Positioning with Strongest iBeacon ===
414 -
415 -
416 416  (% border="1.5" cellspacing="3" style="background-color:#ffffcc; color:green; width:450px" %)
417 417  |=(% scope="row" style="width: 60px;" %)(((
418 418  **Size(bytes)**
... ... @@ -441,11 +441,9 @@
441 441  * (% style="color:#037691" %)**RSSI:  ** (%%) The RSSI from the strongest iBeacon.
442 442  
443 443  
349 +=== 2.3.5 Add Payload format in TTN V3 ===
444 444  
445 445  
446 -=== 2.4.6  Add Payload format in TTN V3 ===
447 -
448 -
449 449  In TTN V3, use can add a custom payload so it shows friendly.
450 450  
451 451  In the page (% style="color:#037691" %)**Applications ~-~-> Payload Formats ~-~-> Custom ~-~-> decoder**
... ... @@ -463,7 +463,7 @@
463 463  
464 464  
465 465  
466 -== 2.5 Integrate with Datacake ==
369 +== 2.4 Integrate with Datacake ==
467 467  
468 468  
469 469  (((
... ... @@ -479,7 +479,7 @@
479 479  
480 480  
481 481  
482 -== 2.6 Integrate with Tago ==
385 +== 2.5 Integrate with Tago ==
483 483  
484 484  
485 485  (((
... ... @@ -495,16 +495,9 @@
495 495  
496 496  
497 497  
498 -== 2.7  Datalog Feature ==
401 +== 2.6 Alarm Mode ==
499 499  
500 500  
501 -total 273 entries,by default disable
502 -
503 -
504 -
505 -== 2.8 Alarm Mode ==
506 -
507 -
508 508  (((
509 509  User can push the (% style="color:red" %)**RED button**(%%) by more than 5 seconds to enter Alarm Mode.
510 510  )))
... ... @@ -528,16 +528,13 @@
528 528  
529 529  
530 530  
531 -== 2.9 Transport Mode ==
427 +== 2.7 Sports Mode ==
532 532  
533 533  
534 -In Transport Mode, TrackerD will check if there is motion. If there is no motion, device will send uplinks every 20 minutes. If there is motion, device will send uplink every 5 minutes.
535 535  
431 +== 2.8 LED Status ==
536 536  
537 537  
538 -== 2.10 LED Status ==
539 -
540 -
541 541  (% border="1.5" style="background-color:#ffffcc; color:green; width:500px" %)
542 542  |=(% style="width: 150px;" %)**Event**|=(% style="width: 200px;" %)**Action**|=(% style="width: 150px;" %)**AT+LON to control on/off**
543 543  |(% style="width:157px" %)**Power On**|(% style="width:271px" %)(% style="color:blue" %)**BLUE, **(% style="color:red" %)**RED , **(% style="color:green" %)**Green** flash once|(% style="width:202px" %)N/A
... ... @@ -553,11 +553,9 @@
553 553  |(% style="width:157px" %)**Movement Detect**|(% style="width:271px" %)(% style="color:red" %)**RED **(%%)led on 500ms|(% style="width:202px" %)N/A
554 554  
555 555  
449 +== 2.9 Button Function ==
556 556  
557 557  
558 -== 2.11 Button Function ==
559 -
560 -
561 561  (% style="color:blue" %)**RESET button:**
562 562  
563 563  [[image:1664502835802-546.png]]
... ... @@ -577,11 +577,9 @@
577 577  |(% style="width:135px" %)Enter Deep Sleep Mode|(% style="width:220px" %)Press and hold the button for 10 seconds, then quickly press the device 3 times to enter deep sleep|(% style="width:265px" %)This is the mode ship out from factory. CPU will be complete in sleep mode and no LoRa activity, only use before deploy.
578 578  
579 579  
471 +== 2.10 USB Port Function ==
580 580  
581 581  
582 -== 2.12 USB Port Function ==
583 -
584 -
585 585  The USB interface of TrackerD has below functions:
586 586  
587 587  * Power on the device
... ... @@ -590,8 +590,6 @@
590 590  * [[Upgrade Firmware>>||anchor="H5.UploadFirmware"]]
591 591  
592 592  
593 -
594 -
595 595  = 3. Configure TrackerD via AT command or LoRaWAN downlink =
596 596  
597 597  
... ... @@ -664,16 +664,16 @@
664 664  
665 665  
666 666  
667 -=== 3.2.3 Set Transport Mode Packet transmission interval ===
554 +=== 3.2.3 Set Sports Mode Packet transmission interval ===
668 668  
669 669  
670 -Set Transport Mode packet transmit interval
557 +Set sports packet transmit interval
671 671  
672 672  * (% style="color:blue" %)**AT Command:**
673 673  
674 674  (% style="color:#037691" %)**AT+MTDC=xx. **
675 675  
676 -Example:  AT+MTDC=300000  **~-~->    ** Set Transport Mode Packet Interval to 300 seconds. TrackerD will send every 300 seconds in Transport mode, Default Value: 300000
563 +Example:  AT+MTDC=300000  **~-~->    ** Set Sports Mode Packet Interval to 300 seconds. TrackerD will send every 300 seconds in Sports mode, Default Value: 300000
677 677  
678 678  
679 679  * (% style="color:blue" %)**Downlink Payload (prefix 0x03):**
... ... @@ -713,16 +713,16 @@
713 713  
714 714  
715 715  
716 -=== 3.2.6 Disable/Enable Transport Mode ===
603 +=== 3.2.6 Disable/Enable movement detect (Debug Only) ===
717 717  
718 718  
719 -Users can use this feature to enable/disable Transport Mode.
606 +User can use this feature to check and set thread hole of movement detect
720 720  
721 721  * (% style="color:blue" %)**AT Command:**
722 722  
723 723  (% style="color:#037691" %)**AT+INTWK=xx.  (Disable (0), Enable (1), default:0)**
724 724  
725 -Example:  AT+ INTWK =1  **~-~->   ** Enable Transport Mode.
612 +Example:  AT+ INTWK =1  **~-~->   ** Enable detect movement.
726 726  
727 727  
728 728  * (% style="color:blue" %)**Downlink Payload (prefix 0xAF):**
... ... @@ -734,30 +734,23 @@
734 734  === 3.2.7 Set Positioning Mode ===
735 735  
736 736  
737 -SMOD define the how TrackerD scan and uplink data:
624 +SMOD define the how TrackerD scan and uplink date.
738 738  
626 +GPS室外定位模式：  设备默认模式，设备入网后会发送device当前模式下的信息，随后立即定位发送数据包（默认是3分钟定位，超过将发送无效数据），如果出现意外情况下，快速按键3下，将会发出报警消息（默认每分钟发送一次）。GPS还有一种logdata模式，在断网的情况下将数据存储下来，等到有网的时候，一次将数据以每10秒上报。
739 739  
740 -* (% style="color:blue" %)**AT Command:**
628 +BLE室内定位模式：  设备入网后会发送device当前模式下的信息，随后立即定位发送数据包（默认是5秒，超过将发送无效数据），如果出现意外情况下，快速按键3下，将会发出报警消息（默认每3分钟发送一次）。
741 741  
742 -(% style="color:#037691" %)**AT+SMOD=aa,bb**
630 +GPS和BLE混动模式：设备入网后会发送device当前模式下的信息，随后立即判断是否在室内，如果是就进行BLE定位，不是就GPS定位。如果出现意外情况下，快速按键3下，将会发出报警消息（默认每分钟发送一次）。
743 743  
744 -(% style="color:#037691" %)** aa:**
632 +运动模式：  设备入网后会发送device当前模式下的信息，随后发送GPS定位数据，设备判断是否在运动，没有运动传感器没有检测到动作，立即进入静止状态（默认20分钟），如果产生运动，将每5分钟发送一次数据，再第五分钟后检测设备有误运动，无将切换到静止状态，有立即发送数据。
745 745  
746 -* (% style="color:#037691" %)**1: GPS ONLY(Factory Settings):    **(%%)only get and uplink GPS location info.
747 -* (% style="color:#037691" %)**2: BLE ONLY:              **(%%)Only obtain iBeacon info via BLE and uplink. Design for Indoor tracking.
748 -* (% style="color:#037691" %)**3: GPS/BLE Hybrid:   **(%%)Combination for Indoor and Outdoor tracking.Devices will try to search BLE iBeacon first. If device can't find the iBeacon, it will use GPS for positioning
749 749  
750 -(% style="color:#037691" %)**bb:**
751 751  
752 -(% style="color:#037691" %)** if aa = 1: **
636 +* (% style="color:blue" %)**AT Command:**
753 753  
754 -* (% style="color:#037691" %)**0 :  **(%%)GPS+ BAT+ State+Tem&Hum
755 -* (% style="color:#037691" %)**1 :**(%%)  GPS +BAT State
638 +(% style="color:#037691" %)**AT+SMOD=xx. **
756 756  
757 -(% style="color:#037691" %)** if aa = 2: **
758 758  
759 -* (% style="color:#037691" %)**3 :  **(%%)(iBeacon)UUID+ Major + Minor+Power+Rssi+BAT+State
760 -
761 761   **Example:**
762 762  
763 763   AT+ SMOD =1,0  **~-~-> ** GPS+ BAT+ State+Tem&Hum
... ... @@ -764,7 +764,7 @@
764 764  
765 765   AT+ SMOD =1,1    **~-~->**  GPS +BAT State
766 766  
767 - AT+ SMOD =2,3    **~-~->**  (iBeacon)UUID+ Major + Minor+Power+Rssi+BAT+State
647 + AT+ SMOD =2,3    **~-~->**  (iBeacon)UUID+ Major + Minor+Power+Rssi+BAT+State。
768 768  
769 769  
770 770  * (% style="color:blue" %)**Downlink Payload (prefix 0xA5):**
... ... @@ -795,7 +795,7 @@
795 795  
796 796  
797 797  
798 -=== 3.2.9 Set PDOP value for GPS fix accuracy ===
678 +=== 3.3.9 Set PDOP value for GPS fix accuracy ===
799 799  
800 800  
801 801  PDOP(Position Dilution of Precision) filter, TrackerD will only accept GPS data with a lower PDOP value than pre-configure PDOP value. If device can't get a valid GPS packet within FTIME timeout, it will use the GPS data with lowest PDOP value to server.
... ... @@ -918,7 +918,6 @@
918 918  [[image:1664503635019-941.png]]
919 919  
920 920  
921 -
922 922  * (% style="color:#037691" %)**Go to tools ~-~-> Boards ~-~-> Boards Manager**,(%%) **find the esp32 information and install it.**
923 923  
924 924  [[image:1664503715811-892.png]]
... ... @@ -985,7 +985,6 @@
985 985  
986 986  
987 987  
988 -
989 989  = 8.  Order Info =
990 990  
991 991  
... ... @@ -1002,8 +1002,6 @@
1002 1002  * (% style="color:red" %)**US915**(%%): Default frequency band US915
1003 1003  
1004 1004  
1005 -
1006 -
1007 1007  = 9.  Packing Info =
1008 1008  
1009 1009  
... ... @@ -1018,7 +1018,6 @@
1018 1018  * Weight: 50g
1019 1019  
1020 1020  
1021 -
1022 1022  = 10. Support =
1023 1023  
1024 1024  
... ... @@ -1026,7 +1026,6 @@
1026 1026  * Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]].
1027 1027  
1028 1028  
1029 -
1030 1030  = 11.  Reference =
1031 1031  
1032 1032  
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