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Last modified by Mengting Qiu on 2023/12/14 11:15
From version 140.1
edited by Mengting Qiu
on 2023/12/07 14:51
Change comment: There is no comment for this version
To version 121.1
edited by Xiaoling
on 2023/11/28 15:04
Change comment: Uploaded new attachment "1701155076393-719.png", version {1}

Summary

Details

Page properties
Author
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1 -XWiki.ting
1 +XWiki.Xiaoling
Content
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8 8  
9 9  
10 10  
11 -**Table of Contents:(% style="display:none" %) (%%)**
11 +**Table of Contents：**
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 -=== Step 1: Create a device in TTN with the OTAA keys from DS20L. ===
94 +(% style="color:blue" %)**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  
... ... @@ -98,22 +98,32 @@
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 V3 screenshot:
101 +You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
102 102  
103 103  
104 104  (% style="color:blue" %)**Register the device**
105 105  
106 -[[image:image-20231207144600-2.png||height="703" width="756"]]
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"]]
107 107  
108 108  
109 -(% style="color:blue" %)**Add DevEUI and AppKey**
109 +(% style="color:blue" %)**Add APP EUI and DEV EUI**
110 110  
111 -[[image:image-20231207145121-5.png||height="540" width="756"]]
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"]]
112 112  
113 113  
114 +(% style="color:blue" %)**Add APP EUI in the application**
114 114  
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 +
117 117  [[image:image-20231128133704-1.png||height="189" width="441"]]
118 118  
119 119  Press the button for 5 seconds to activate the DS20L.
... ... @@ -123,7 +123,6 @@
123 123  After join success, it will start to upload messages to TTN and you can see the messages in the panel.
124 124  
125 125  
126 -
127 127  == 2.3 ​Uplink Payload ==
128 128  
129 129  === 2.3.1 Device Status, FPORT~=5 ===
... ... @@ -141,7 +141,7 @@
141 141  
142 142  Example parse in TTNv3
143 143  
144 -[[image:image-20231206151412-3.png||height="179" width="1070"]]
153 +[[image:1701149922873-259.png]]
145 145  
146 146  (% style="color:blue" %)**Sensor Model**(%%): For DS20L, this value is 0x21
147 147  
... ... @@ -197,25 +197,45 @@
197 197  === 2.3.2 Uplink Payload, FPORT~=2 ===
198 198  
199 199  
200 -==== (% style="color:red" %)**MOD~=1**(%%) ====
209 +(((
210 +DS20L will send this uplink **after** Device Status once join the LoRaWAN network successfully. And DS20L will:
201 201  
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 +
202 202  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.
203 203  
204 204  Uplink Payload totals 10 bytes.
205 205  
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
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
209 209  
210 -[[image:image-20231206195704-6.png||height="238" width="999"]]
211 211  
212 -(% style="color:blue" %)**Battery Info:**
240 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image001.png]]
213 213  
242 +(% style="color:blue" %)**Battery Info**
243 +
214 214  Check the battery voltage for DS20L
215 215  
216 216  Ex1: 0x0E10 = 3600mV
217 217  
218 -
219 219  (% style="color:blue" %)**MOD & Alarm & Interrupt:**
220 220  
221 221  (% style="color:red" %)**MOD:**
... ... @@ -233,37 +233,36 @@
233 233  
234 234  Whether it is an external interrupt.
235 235  
265 +(% style="color:blue" %)**Distance info**
236 236  
237 -(% style="color:blue" %)**Distance info:**
238 -
239 239  **Example**:
240 240  
241 241  If payload is: 0708H: distance = 0708H = 1800 mm
242 242  
271 +(% style="color:blue" %)**Sensor State**
243 243  
244 -(% style="color:blue" %)**Sensor State:**
245 -
246 246  Ex1: 0x00: Normal collection distance
247 247  
248 248  Ex2 0x0x: Distance collection is wrong
249 249  
277 +(% style="color:blue" %)**Interript Count**
250 250  
251 -(% style="color:blue" %)**Interript Count:**
252 -
253 253  If payload is:000007D0H: count = 07D0H =2000
254 254  
255 255  
256 256  
257 -==== (% style="color:red" %)**MOD~=2**(%%)** ** ====
258 258  
284 +==== (% style="color:red" %)**MOD=2** ====
285 +
259 259  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.
260 260  
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
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
264 264  
265 -[[image:1701155150328-206.png]]
266 266  
293 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image001.png]]
294 +
267 267  (% style="color:blue" %)**MOD & Alarm & Do & Limit flag:**
268 268  
269 269  (% style="color:red" %)**MOD:**
... ... @@ -283,19 +283,19 @@
283 283  
284 284  (% style="color:red" %)**Limit flag:**
285 285  
286 -Mode for setting threshold: **0~~5**
314 +Mode for setting threshold: 0~~5
287 287  
288 -**0:** does not use upper and lower limits
316 +0: does not use upper and lower limits
289 289  
290 -**1:** Use upper and lower limits
318 +1: Use upper and lower limits
291 291  
292 -**2:** is less than the lower limit value
320 +2: is less than the lower limit value
293 293  
294 -**3:** is greater than the lower limit value
322 +3: is greater than the lower limit value
295 295  
296 -**4:** is less than the upper limit
324 +4: is less than the upper limit
297 297  
298 -**5:** is greater than the upper limit
326 +5: is greater than the upper limit
299 299  
300 300  
301 301  (% style="color:blue" %)**Upper limit:**
... ... @@ -302,18 +302,99 @@
302 302  
303 303  The upper limit of the threshold cannot exceed 2000mm.
304 304  
305 -
306 306  (% style="color:blue" %)**Lower limit:**
307 307  
308 308  The lower limit of the threshold cannot be less than 3mm.
309 309  
310 310  
311 -== 2.4 Decode payload in The Things Network ==
338 +=== 2.3.3 Historical measuring distance, FPORT~=3 ===
312 312  
313 313  
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 +
314 314  While using TTN network, you can add the payload format to decode the payload.
315 315  
316 -[[image:image-20231206143515-1.png||height="534" width="759"]]
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"]]
317 317  
318 318  
319 319  (((
... ... @@ -325,7 +325,7 @@
325 325  )))
326 326  
327 327  
328 -== 2.5 ​Show Data in DataCake IoT Server ==
437 +== 2.4 ​Show Data in DataCake IoT Server ==
329 329  
330 330  
331 331  (((
... ... @@ -357,10 +357,10 @@
357 357  
358 358  After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
359 359  
360 -[[image:image-20231129100454-2.png||height="501" width="928"]]
469 +[[image:1701152946067-561.png]]
361 361  
362 362  
363 -== 2.6 Frequency Plans ==
472 +== 2.5 Frequency Plans ==
364 364  
365 365  
366 366  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.
... ... @@ -441,9 +441,6 @@
441 441  )))
442 442  * (((
443 443  Example 2: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
444 -
445 -
446 -
447 447  )))
448 448  
449 449  === 3.3.2 Set Interrupt Mode ===
... ... @@ -484,9 +484,10 @@
484 484  
485 485  * Example 2: Downlink Payload: 06000003  ~/~/  Set the interrupt mode to rising edge trigger
486 486  
487 -=== 3.3.3 Set work mode ===
488 488  
594 +== 3.3.3 Set work mode ==
489 489  
596 +
490 490  Feature: Switch working mode
491 491  
492 492  (% style="color:blue" %)**AT Command: AT+MOD**
... ... @@ -501,9 +501,9 @@
501 501  
502 502  (% style="color:blue" %)**Downlink Command:**
503 503  
504 -* **Example: **0x0A01 ~/~/  Same as AT+MOD=1
611 +* **Example: **0x0A00  ~/~/  Same as AT+MOD=0
505 505  
506 -* **Example:** 0x0A02  ~/~/  Same as AT+MOD=2
613 +* **Example:** 0x0A01  ~/~/  Same as AT+MOD=1
507 507  
508 508  === 3.3.4 Set threshold and threshold mode ===
509 509  
... ... @@ -522,29 +522,10 @@
522 522  )))
523 523  |(% style="width:172px" %)AT+ DOL =1,1800,100,0,400|(% style="width:279px" %)Set only the upper and lower thresholds|(% style="width:118px" %)OK
524 524  
525 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
526 -|(% rowspan="11" style="color:blue; width:120px" %)(((
527 -
528 528  
529 529  
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
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
548 548  |(% style="width:251px" %)1: Use upper and lower limits
549 549  |(% style="width:251px" %)2: Less than the lower limit
550 550  |(% style="width:251px" %)3: Greater than the lower limit
... ... @@ -562,22 +562,14 @@
562 562  
563 563  (% style="color:blue" %)**Downlink Command: 0x07**
564 564  
565 -Format: Command Code (0x07) followed by 9 bytes.
653 +Format: Command Code (0x07) followed by 9bytes.
566 566  
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.
655 +* Example 0: Downlink Payload: 070000000000000190  **~-~-->**  AT+MOD=0,0,0,0,400
568 568  
569 -* Example 0: Downlink Payload: 07 00 0000 0000 00 0190  **~-~-->**  AT+MOD=0,0,0,0,400
570 -
571 571  * Example 1: Downlink Payload: 070107080064000190  **~-~-->**  AT+MOD=1,1800,100,0,400
572 572  
573 -* Example 2: Downlink Payload: 070200000064000190  **~-~-->**  AT+MOD=2,0,100,0,400
574 574  
575 -* Example 3: Downlink Payload: 070300000064000190  **~-~-->**  AT+MOD=3,1800,100,0,400
576 576  
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 -
581 581  = 4. Battery & Power Consumption =
582 582  
583 583  
... ... @@ -614,33 +614,6 @@
614 614  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"]]
615 615  
616 616  
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 -
644 644  = 7. Trouble Shooting =
645 645  
646 646  == 7.1 AT Command input doesn't work ==
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