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Last modified by Mengting Qiu on 2023/12/14 11:15
From version 123.1
edited by Xiaoling
on 2023/11/28 15:09
Change comment: Uploaded new attachment "1701155390576-216.png", version {1}
To version 142.1
edited by Mengting Qiu
on 2023/12/07 15:40
Change comment: Uploaded new attachment "image-20231207154046-7.png", version {1}

Summary

Details

Page properties
Author
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1 -XWiki.Xiaoling
1 +XWiki.ting
Content
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8 8  
9 9  
10 10  
11 -**Table of Contents：**
11 +**Table of Contents:(% style="display:none" %) (%%)**
12 12  
13 13  {{toc/}}
14 14  
... ... @@ -91,7 +91,7 @@
91 91  
92 92  [[image:image-20231110102635-5.png||height="402" width="807"]](% style="display:none" %)
93 93  
94 -(% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from DS20L.
94 +=== Step 1: Create a device in TTN with the OTAA keys from DS20L. ===
95 95  
96 96  Each DS20L is shipped with a sticker with the default device EUI as below:
97 97  
... ... @@ -98,32 +98,22 @@
98 98  [[image:image-20230426084152-1.png||alt="图片-20230426084152-1.png" height="233" width="502"]]
99 99  
100 100  
101 -You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
101 +You can enter this key in the LoRaWAN Server portal. Below is TTN V3 screenshot:
102 102  
103 103  
104 104  (% style="color:blue" %)**Register the device**
105 105  
106 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/1654935135620-998.png?rev=1.1||alt="1654935135620-998.png"]]
106 +[[image:image-20231207144600-2.png||height="703" width="756"]]
107 107  
108 108  
109 -(% style="color:blue" %)**Add APP EUI and DEV EUI**
109 +(% style="color:blue" %)**Add DevEUI and AppKey**
110 110  
111 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-4.png?width=753&height=551&rev=1.1||alt="图片-20220611161308-4.png"]]
111 +[[image:image-20231207145121-5.png||height="540" width="756"]]
112 112  
113 113  
114 -(% style="color:blue" %)**Add APP EUI in the application**
115 115  
115 +=== Step 2: Activate on DS20L ===
116 116  
117 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-5.png?width=742&height=601&rev=1.1||alt="图片-20220611161308-5.png"]]
118 -
119 -
120 -(% style="color:blue" %)**Add APP KEY**
121 -
122 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-6.png?width=744&height=485&rev=1.1||alt="图片-20220611161308-6.png"]]
123 -
124 -
125 -(% style="color:blue" %)**Step 2:**(%%) Activate on DS20L
126 -
127 127  [[image:image-20231128133704-1.png||height="189" width="441"]]
128 128  
129 129  Press the button for 5 seconds to activate the DS20L.
... ... @@ -133,6 +133,7 @@
133 133  After join success, it will start to upload messages to TTN and you can see the messages in the panel.
134 134  
135 135  
126 +
136 136  == 2.3 ​Uplink Payload ==
137 137  
138 138  === 2.3.1 Device Status, FPORT~=5 ===
... ... @@ -150,7 +150,7 @@
150 150  
151 151  Example parse in TTNv3
152 152  
153 -[[image:1701149922873-259.png]]
144 +[[image:image-20231206151412-3.png||height="179" width="1070"]]
154 154  
155 155  (% style="color:blue" %)**Sensor Model**(%%): For DS20L, this value is 0x21
156 156  
... ... @@ -206,45 +206,25 @@
206 206  === 2.3.2 Uplink Payload, FPORT~=2 ===
207 207  
208 208  
209 -(((
210 -DS20L will send this uplink **after** Device Status once join the LoRaWAN network successfully. And DS20L will:
200 +==== (% style="color:red" %)**MOD~=1**(%%) ====
211 211  
212 -periodically send this uplink every 20 minutes, this interval [[can be changed>>||anchor="H3.3.1SetTransmitIntervalTime"]].
213 -
214 -Uplink Payload totals 11 bytes.
215 -)))
216 -
217 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
218 -|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
219 -**Size(bytes)**
220 -)))|=(% style="width: 30px;background-color:#4F81BD;color:white" %)**2**|=(% style="width: 80px;background-color:#4F81BD;color:white" %)**2**|=(% style="width: 50px;background-color:#4F81BD;color:white" %)**2**|=(% style="width: 70px;background-color:#4F81BD;color:white" %)**2**|=(% style="background-color:#4F81BD;color:white; width: 80px;" %)**1**|=(% style="background-color: #4F81BD;color:white; width: 70px;" %)**1**|=(% style="background-color: #4F81BD;color:white; width: 70px;" %)**1**
221 -|(% style="width:62.5px" %)Value|(% style="width:62.5px" %)[[BAT>>||anchor="HBatteryInfo"]]|(% style="width:62.5px" %)(((
222 -[[Temperature DS18B20>>||anchor="HDS18B20Temperaturesensor"]]
223 -)))|[[Distance>>||anchor="HDistance"]]|[[Distance signal strength>>||anchor="HDistancesignalstrength"]]|(% style="width:122px" %)(((
224 -[[Interrupt flag & Interrupt_level>>||anchor="HInterruptPin26A0InterruptLevel"]]
225 -)))|(% style="width:54px" %)[[LiDAR temp>>||anchor="HLiDARtemp"]]|(% style="width:96px" %)(((
226 -[[Message Type>>||anchor="HMessageType"]]
227 -)))
228 -
229 -==== (% style="color:red" %)**MOD~=1** ====
230 -
231 231  Regularly detect distance and report. When the distance exceeds the limit, the alarm flag is set to 1, and the report can be triggered by external interrupts.
232 232  
233 233  Uplink Payload totals 10 bytes.
234 234  
235 -(% border="1" cellspacing="4" style="width:510px;background-color:#f2f2f2" %)
236 -|(% style="width:60px;background-color:#4F81BD;color:white" %)**Size(bytes)**|(% style="width:30px;background-color:#4F81BD;color:white" %)**2**|(% style="width:130px;background-color:#4F81BD;color:white" %)**1**|(% style="width:70px;background-color:#4F81BD;color:white" %)**2**|(% style="width:100px;background-color:#4F81BD;color:white" %)**1**|(% style="width:120px;background-color:#4F81BD;color:white" %)**4**
237 -|(% style="width:91px" %)Value|(% style="width:41px" %)[[BAT>>||anchor="HBatteryInfo"]]|(% style="width:176px" %)MOD+ Alarm+Interrupt|(% style="width:74px" %)Distance|(% style="width:100px" %)Sensor State|(% style="width:119px" %)Interrupt Count
206 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
207 +|(% style="background-color:#4f81bd; color:white; width:60px" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white; width:30px" %)**2**|(% style="background-color:#4f81bd; color:white; width:130px" %)**1**|(% style="background-color:#4f81bd; color:white; width:70px" %)**2**|(% style="background-color:#4f81bd; color:white; width:100px" %)**1**|(% style="background-color:#4f81bd; color:white; width:120px" %)**4**
208 +|(% style="width:91px" %)Value|(% style="width:41px" %)BAT|(% style="width:176px" %)MOD+ Alarm+Interrupt|(% style="width:74px" %)Distance|(% style="width:100px" %)Sensor State|(% style="width:119px" %)Interrupt Count
238 238  
210 +[[image:image-20231206195704-6.png||height="238" width="999"]]
239 239  
240 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image001.png]]
212 +(% style="color:blue" %)**Battery Info:**
241 241  
242 -(% style="color:blue" %)**Battery Info**
243 -
244 244  Check the battery voltage for DS20L
245 245  
246 246  Ex1: 0x0E10 = 3600mV
247 247  
218 +
248 248  (% style="color:blue" %)**MOD & Alarm & Interrupt:**
249 249  
250 250  (% style="color:red" %)**MOD:**
... ... @@ -262,36 +262,37 @@
262 262  
263 263  Whether it is an external interrupt.
264 264  
265 -(% style="color:blue" %)**Distance info**
266 266  
237 +(% style="color:blue" %)**Distance info:**
238 +
267 267  **Example**:
268 268  
269 269  If payload is: 0708H: distance = 0708H = 1800 mm
270 270  
271 -(% style="color:blue" %)**Sensor State**
272 272  
244 +(% style="color:blue" %)**Sensor State:**
245 +
273 273  Ex1: 0x00: Normal collection distance
274 274  
275 275  Ex2 0x0x: Distance collection is wrong
276 276  
277 -(% style="color:blue" %)**Interript Count**
278 278  
251 +(% style="color:blue" %)**Interript Count:**
252 +
279 279  If payload is:000007D0H: count = 07D0H =2000
280 280  
281 281  
282 282  
257 +==== (% style="color:red" %)**MOD~=2**(%%)** ** ====
283 283  
284 -==== (% style="color:red" %)**MOD=2** ====
285 -
286 286  Uninterrupted measurement. When the distance exceeds the limit, the output IO is set high and reports are reported every five minutes. The time can be set and powered by an external power supply.Uplink Payload totals 11bytes.
287 287  
288 -(% border="1" cellspacing="4" style="width:510px;background-color:#f2f2f2" %)
289 -|(% style="width:70px;background-color:#4F81BD;color:white" %)**Size(bytes)**|(% style="width:40px;background-color:#4F81BD;color:white" %)**2**|(% style="width:130px;background-color:#4F81BD;color:white" %)**1**|(% style="width:130px;background-color:#4F81BD;color:white" %)**4**|(% style="width:70px;background-color:#4F81BD;color:white" %)**2**|(% style="width:70px;background-color:#4F81BD;color:white" %)**2**
290 -|(% style="width:91px" %)Value|(% style="width:41px" %)[[BAT>>||anchor="HBatteryInfo"]]|(% style="width:176px" %)MOD+Alarm+Do+Limit flag|(% style="width:74px" %)Distance Limit Alarm count|(% style="width:100px" %)Upper limit|(% style="width:119px" %)Lower limit
261 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
262 +|(% style="background-color:#4f81bd; color:white; width:70px" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white; width:40px" %)**2**|(% style="background-color:#4f81bd; color:white; width:130px" %)**1**|(% style="background-color:#4f81bd; color:white; width:130px" %)**4**|(% style="background-color:#4f81bd; color:white; width:70px" %)**2**|(% style="background-color:#4f81bd; color:white; width:70px" %)**2**
263 +|(% style="width:91px" %)Value|(% style="width:41px" %)BAT|(% style="width:176px" %)MOD+Alarm+Do+Limit flag|(% style="width:74px" %)Distance Limit Alarm count|(% style="width:100px" %)Upper limit|(% style="width:119px" %)Lower limit
291 291  
265 +[[image:1701155150328-206.png]]
292 292  
293 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image001.png]]
294 -
295 295  (% style="color:blue" %)**MOD & Alarm & Do & Limit flag:**
296 296  
297 297  (% style="color:red" %)**MOD:**
... ... @@ -311,19 +311,19 @@
311 311  
312 312  (% style="color:red" %)**Limit flag:**
313 313  
314 -Mode for setting threshold: 0~~5
286 +Mode for setting threshold: **0~~5**
315 315  
316 -0: does not use upper and lower limits
288 +**0:** does not use upper and lower limits
317 317  
318 -1: Use upper and lower limits
290 +**1:** Use upper and lower limits
319 319  
320 -2: is less than the lower limit value
292 +**2:** is less than the lower limit value
321 321  
322 -3: is greater than the lower limit value
294 +**3:** is greater than the lower limit value
323 323  
324 -4: is less than the upper limit
296 +**4:** is less than the upper limit
325 325  
326 -5: is greater than the upper limit
298 +**5:** is greater than the upper limit
327 327  
328 328  
329 329  (% style="color:blue" %)**Upper limit:**
... ... @@ -330,99 +330,18 @@
330 330  
331 331  The upper limit of the threshold cannot exceed 2000mm.
332 332  
305 +
333 333  (% style="color:blue" %)**Lower limit:**
334 334  
335 335  The lower limit of the threshold cannot be less than 3mm.
336 336  
337 337  
338 -=== 2.3.3 Historical measuring distance, FPORT~=3 ===
311 +== 2.4 Decode payload in The Things Network ==
339 339  
340 340  
341 -DS20L stores sensor values and users can retrieve these history values via the [[downlink command>>||anchor="H2.5.4Pollsensorvalue"]].
342 -
343 -The historical payload includes one or multiplies entries and every entry has the same payload as Real-Time measuring distance.
344 -
345 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
346 -|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
347 -**Size(bytes)**
348 -)))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)1|=(% style="width: 80px;background-color:#4F81BD;color:white" %)**1**|=(% style="width: 50px;background-color:#4F81BD;color:white" %)**2**|=(% style="width: 70px;background-color:#4F81BD;color:white" %)**2**|=(% style="background-color:#4F81BD; color: white; width: 85px;" %)**1**|=(% style="background-color: #4F81BD; color: white; width: 85px;" %)4
349 -|(% style="width:62.5px" %)Value|(% style="width:62.5px" %)Interrupt flag & Interrupt_level|(% style="width:62.5px" %)(((
350 -Reserve(0xFF)
351 -)))|Distance|Distance signal strength|(% style="width:88px" %)(((
352 -LiDAR temp
353 -)))|(% style="width:85px" %)Unix TimeStamp
354 -
355 -**Interrupt flag & Interrupt level:**
356 -
357 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
358 -|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
359 -**Size(bit)**
360 -)))|=(% style="width: 90px;background-color:#4F81BD;color:white" %)**bit7**|=(% style="width: 90px;background-color:#4F81BD;color:white" %)**bit6**|=(% style="width: 60px;background-color:#4F81BD;color:white" %)**[bit5:bit2]**|=(% style="width: 90px; background-color: #4F81BD; color: white;" %)**bit1**|=(% style="background-color: #4F81BD; color: white; width: 90px;" %)**bit0**
361 -|(% style="width:62.5px" %)Value|(% style="width:62.5px" %)No ACK message|(% style="width:62.5px" %)Poll Message Flag|Reserve|(% style="width:91px" %)Interrupt level|(% style="width:88px" %)(((
362 -Interrupt flag
363 -)))
364 -
365 -* (((
366 -Each data entry is 11 bytes and has the same structure as [[Uplink Payload>>||anchor="H2.3.2UplinkPayload2CFPORT3D2"]], to save airtime and battery, DS20L will send max bytes according to the current DR and Frequency bands.
367 -)))
368 -
369 -For example, in the US915 band, the max payload for different DR is:
370 -
371 -**a) DR0:** max is 11 bytes so one entry of data
372 -
373 -**b) DR1:** max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
374 -
375 -**c) DR2:** total payload includes 11 entries of data
376 -
377 -**d) DR3:** total payload includes 22 entries of data.
378 -
379 -If DS20L doesn't have any data in the polling time. It will uplink 11 bytes of 0
380 -
381 -
382 -**Downlink:**
383 -
384 -0x31 64 CC 68 0C 64 CC 69 74 05
385 -
386 -[[image:image-20230805144936-2.png||height="113" width="746"]]
387 -
388 -**Uplink:**
389 -
390 -43 FF 0E 10 00 B0 1E 64 CC 68 0C 40 FF 0D DE 00 A8 1E 64 CC 68 29 40 FF 09 92 00 D3 1E 64 CC 68 65 40 FF 02 3A 02 BC 1E 64 CC 68 A1 41 FF 0E 1A 00 A4 1E 64 CC 68 C0 40 FF 0D 2A 00 B8 1E 64 CC 68 E8 40 FF 00 C8 11 6A 1E 64 CC 69 24 40 FF 0E 24 00 AD 1E 64 CC 69 6D
391 -
392 -
393 -**Parsed Value:**
394 -
395 -[DISTANCE , DISTANCE_SIGNAL_STRENGTH，LIDAR_TEMP，EXTI_STATUS , EXTI_FLAG , TIME]
396 -
397 -
398 -[360,176,30,High,True,2023-08-04 02:53:00],
399 -
400 -[355,168,30,Low,False,2023-08-04 02:53:29],
401 -
402 -[245,211,30,Low,False,2023-08-04 02:54:29],
403 -
404 -[57,700,30,Low,False,2023-08-04 02:55:29],
405 -
406 -[361,164,30,Low,True,2023-08-04 02:56:00],
407 -
408 -[337,184,30,Low,False,2023-08-04 02:56:40],
409 -
410 -[20,4458,30,Low,False,2023-08-04 02:57:40],
411 -
412 -[362,173,30,Low,False,2023-08-04 02:58:53],
413 -
414 -
415 -**History read from serial port：**
416 -
417 -[[image:image-20230805145056-3.png]]
418 -
419 -
420 -=== 2.3.4 Decode payload in The Things Network ===
421 -
422 -
423 423  While using TTN network, you can add the payload format to decode the payload.
424 424  
425 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LLDS12-LoRaWAN%20LiDAR%20ToF%20Distance%20Sensor%20User%20Manual/WebHome/1654592762713-715.png?rev=1.1||alt="1654592762713-715.png"]]
316 +[[image:image-20231206143515-1.png||height="534" width="759"]]
426 426  
427 427  
428 428  (((
... ... @@ -434,7 +434,7 @@
434 434  )))
435 435  
436 436  
437 -== 2.4 ​Show Data in DataCake IoT Server ==
328 +== 2.5 ​Show Data in DataCake IoT Server ==
438 438  
439 439  
440 440  (((
... ... @@ -466,10 +466,10 @@
466 466  
467 467  After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
468 468  
469 -[[image:1701152946067-561.png]]
360 +[[image:image-20231129100454-2.png||height="501" width="928"]]
470 470  
471 471  
472 -== 2.5 Frequency Plans ==
363 +== 2.6 Frequency Plans ==
473 473  
474 474  
475 475  The DS20L uses OTAA mode and below frequency plans by default. If user want to use it with different frequency plan, please refer the AT command sets.
... ... @@ -550,6 +550,9 @@
550 550  )))
551 551  * (((
552 552  Example 2: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
444 +
445 +
446 +
553 553  )))
554 554  
555 555  === 3.3.2 Set Interrupt Mode ===
... ... @@ -590,10 +590,9 @@
590 590  
591 591  * Example 2: Downlink Payload: 06000003  ~/~/  Set the interrupt mode to rising edge trigger
592 592  
487 +=== 3.3.3 Set work mode ===
593 593  
594 -== 3.3.3 Set work mode ==
595 595  
596 -
597 597  Feature: Switch working mode
598 598  
599 599  (% style="color:blue" %)**AT Command: AT+MOD**
... ... @@ -608,9 +608,9 @@
608 608  
609 609  (% style="color:blue" %)**Downlink Command:**
610 610  
611 -* **Example: **0x0A00  ~/~/  Same as AT+MOD=0
504 +* **Example: **0x0A01 ~/~/  Same as AT+MOD=1
612 612  
613 -* **Example:** 0x0A01  ~/~/  Same as AT+MOD=1
506 +* **Example:** 0x0A02  ~/~/  Same as AT+MOD=2
614 614  
615 615  === 3.3.4 Set threshold and threshold mode ===
616 616  
... ... @@ -629,10 +629,29 @@
629 629  )))
630 630  |(% style="width:172px" %)AT+ DOL =1,1800,100,0,400|(% style="width:279px" %)Set only the upper and lower thresholds|(% style="width:118px" %)OK
631 631  
525 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
526 +|(% rowspan="11" style="color:blue; width:120px" %)(((
527 +
632 632  
633 633  
634 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
635 -|(% rowspan="11" style="color:blue; width:120px" %)**AT+DOL=5,1800,0,0,400**|(% rowspan="6" style="width:240px" %)The first bit sets the limit mode|(% style="width:150px" %)0: Do not use upper and lower limits
530 +
531 +
532 +
533 +
534 +
535 +
536 +
537 +
538 +**AT+DOL=5,1800,0,0,400**
539 +)))|(% rowspan="6" style="width:240px" %)(((
540 +
541 +
542 +
543 +
544 +
545 +
546 +The first bit sets the limit mode
547 +)))|(% style="width:150px" %)0: Do not use upper and lower limits
636 636  |(% style="width:251px" %)1: Use upper and lower limits
637 637  |(% style="width:251px" %)2: Less than the lower limit
638 638  |(% style="width:251px" %)3: Greater than the lower limit
... ... @@ -650,14 +650,22 @@
650 650  
651 651  (% style="color:blue" %)**Downlink Command: 0x07**
652 652  
653 -Format: Command Code (0x07) followed by 9bytes.
565 +Format: Command Code (0x07) followed by 9 bytes.
654 654  
655 -* Example 0: Downlink Payload: 070000000000000190  **~-~-->**  AT+MOD=0,0,0,0,400
567 +If the downlink payload=**07 01 0708 0064 00 0190**, it means set the END Node's limit mode to 0x01,upper limit value to 0x0708=1800(mm), lower limit value to 0x0064=100(mm), to over-limit alarm(0x00) ,the sampling time to 0x0190=400(ms), while type code is 0x07.
656 656  
569 +* Example 0: Downlink Payload: 07 00 0000 0000 00 0190  **~-~-->**  AT+MOD=0,0,0,0,400
570 +
657 657  * Example 1: Downlink Payload: 070107080064000190  **~-~-->**  AT+MOD=1,1800,100,0,400
658 658  
573 +* Example 2: Downlink Payload: 070200000064000190  **~-~-->**  AT+MOD=2,0,100,0,400
659 659  
575 +* Example 3: Downlink Payload: 070300000064000190  **~-~-->**  AT+MOD=3,1800,100,0,400
660 660  
577 +* Example 4: Downlink Payload: 070407080000000190  **~-~-->**  AT+MOD=4,0,100,0,400
578 +
579 +* Example 5: Downlink Payload: 070507080000000190  **~-~-->**  AT+MOD=5,1800,100,0,400
580 +
661 661  = 4. Battery & Power Consumption =
662 662  
663 663  
... ... @@ -694,6 +694,33 @@
694 694  DS20L use the same frequency as other Dragino products. User can see the detail from this link:  [[Introduction>>doc:Main.End Device Frequency Band.WebHome||anchor="H1.Introduction"]]
695 695  
696 696  
617 +== 6.2 DS20L programming line ==
618 +
619 +
620 +缺图 后续补上
621 +
622 +feature:
623 +
624 +for AT commands
625 +
626 +Update the firmware of DS20L
627 +
628 +Support interrupt mode
629 +
630 +
631 +== 6.3 LiDAR probe position ==
632 +
633 +
634 +[[image:1701155390576-216.png||height="285" width="307"]]
635 +
636 +The black oval hole in the picture is the LiDAR probe.
637 +
638 +
639 +== 6.4 Interface definition ==
640 +
641 +[[image:image-20231128151132-2.png||height="305" width="557"]]
642 +
643 +
697 697  = 7. Trouble Shooting =
698 698  
699 699  == 7.1 AT Command input doesn't work ==
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