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Last modified by Mengting Qiu on 2023/12/14 11:15
From version 116.2
edited by Xiaoling
on 2023/11/13 10:37
Change comment: There is no comment for this version
To version 171.3
edited by Mengting Qiu
on 2023/12/12 11:48
Change comment: There is no comment for this version

Summary

Details

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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  
... ... @@ -49,7 +49,6 @@
49 49  
50 50  == 1.3 Specification ==
51 51  
52 -
53 53  (% style="color:#037691" %)**LiDAR Sensor:**
54 54  
55 55  * Operation Temperature: -40 ~~ 80 °C
... ... @@ -60,15 +60,12 @@
60 60  * ToF FoV: ±9°, Total 18°
61 61  * Light source: VCSEL
62 62  
63 -(% style="display:none" %)
64 -
65 -
66 66  == 1.4 Power Consumption ==
67 67  
68 68  
69 69  (% style="color:#037691" %)**Battery Power Mode:**
70 70  
71 -* Idle: 0.003 mA @ 3.3v
67 +* Idle: 3uA @ 3.3v
72 72  * Max : 360 mA
73 73  
74 74  (% style="color:#037691" %)**Continuously mode**:
... ... @@ -76,9 +76,21 @@
76 76  * Idle: 21 mA @ 3.3v
77 77  * Max : 360 mA
78 78  
75 +== 1.5 Use Case ==
79 79  
77 +(% class="mark" %)**Regular Distance Detect**
80 80  
79 +[[image:image-20231211220922-1.png||height="352" width="605"]]
81 81  
81 +
82 +(% class="mark" %)**Counting / Alarm**
83 +
84 +[[image:image-20231211221253-2.png]]
85 +
86 +
87 +[[image:image-20231211221436-3.png]]
88 +
89 +
82 82  = 2. Configure DS20L to connect to LoRaWAN network =
83 83  
84 84  == 2.1 How it works ==
... ... @@ -97,7 +97,7 @@
97 97  
98 98  [[image:image-20231110102635-5.png||height="402" width="807"]](% style="display:none" %)
99 99  
100 -(% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from DS20L.
108 +=== Step 1: Create a device in TTN with the OTAA keys from DS20L. ===
101 101  
102 102  Each DS20L is shipped with a sticker with the default device EUI as below:
103 103  
... ... @@ -104,40 +104,36 @@
104 104  [[image:image-20230426084152-1.png||alt="图片-20230426084152-1.png" height="233" width="502"]]
105 105  
106 106  
107 -You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
115 +You can enter this key in the LoRaWAN Server portal. Below is TTN V3 screenshot:
108 108  
109 109  
110 110  (% style="color:blue" %)**Register the device**
111 111  
112 -[[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"]]
120 +[[image:image-20231207144600-2.png||height="703" width="756"]]
113 113  
114 114  
115 -(% style="color:blue" %)**Add APP EUI and DEV EUI**
123 +(% style="color:blue" %)**Add DevEUI and AppKey**
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-20220611161308-4.png?width=753&height=551&rev=1.1||alt="图片-20220611161308-4.png"]]
125 +[[image:image-20231207145121-5.png||height="540" width="756"]]
118 118  
119 119  
120 -(% style="color:blue" %)**Add APP EUI in the application**
121 121  
129 +=== Step 2: Activate DS20L ===
122 122  
123 -[[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"]]
131 +[[image:image-20231128133704-1.png||height="189" width="441"]]
124 124  
133 +Press the button for 5 seconds to activate the DS20L.
125 125  
126 -(% style="color:blue" %)**Add APP KEY**
135 +The switch is switched to (% style="color:blue" %)**E** (%%)and the external power supply is used.
127 127  
128 -[[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"]]
137 +The switch is switched to (% style="color:blue" %)**I** (%%)and DS20L will be power by the built-in battery.
129 129  
130 -
131 -(% style="color:blue" %)**Step 2:**(%%) Activate on DS20L
132 -
133 -
134 -Press the button for 5 seconds to activate the DS20L.
135 -
136 136  (% style="color:green" %)**Green led**(%%) will fast blink 5 times, device will enter (% style="color:blue" %)**OTA mode**(%%) for 3 seconds. And then start to JOIN LoRaWAN network. (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
137 137  
138 138  After join success, it will start to upload messages to TTN and you can see the messages in the panel.
139 139  
140 140  
144 +
141 141  == 2.3 ​Uplink Payload ==
142 142  
143 143  === 2.3.1 Device Status, FPORT~=5 ===
... ... @@ -155,9 +155,9 @@
155 155  
156 156  Example parse in TTNv3
157 157  
158 -[[image:image-20230805103904-1.png||height="131" width="711"]]
162 +[[image:image-20231206151412-3.png||height="179" width="1070"]]
159 159  
160 -(% style="color:blue" %)**Sensor Model**(%%): For DS20L, this value is 0x24
164 +(% style="color:blue" %)**Sensor Model**(%%): For DS20L, this value is 0x21
161 161  
162 162  (% style="color:blue" %)**Firmware Version**(%%): 0x0100, Means: v1.0.0 version
163 163  
... ... @@ -211,338 +211,348 @@
211 211  === 2.3.2 Uplink Payload, FPORT~=2 ===
212 212  
213 213  
214 -(((
215 -DS20L will send this uplink **after** Device Status once join the LoRaWAN network successfully. And DS20L will:
218 +==== (% style="color:red" %)**AT+MOD~=1**(%%) ====
216 216  
217 -periodically send this uplink every 20 minutes, this interval [[can be changed>>||anchor="H3.3.1SetTransmitIntervalTime"]].
220 +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.
218 218  
219 -Uplink Payload totals 11 bytes.
220 -)))
222 +**Uplink Payload totals 10 bytes.**
221 221  
222 222  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
223 -|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
224 -**Size(bytes)**
225 -)))|=(% 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**
226 -|(% style="width:62.5px" %)Value|(% style="width:62.5px" %)[[BAT>>||anchor="HBatteryInfo"]]|(% style="width:62.5px" %)(((
227 -[[Temperature DS18B20>>||anchor="HDS18B20Temperaturesensor"]]
228 -)))|[[Distance>>||anchor="HDistance"]]|[[Distance signal strength>>||anchor="HDistancesignalstrength"]]|(% style="width:122px" %)(((
229 -[[Interrupt flag & Interrupt_level>>||anchor="HInterruptPin26A0InterruptLevel"]]
230 -)))|(% style="width:54px" %)[[LiDAR temp>>||anchor="HLiDARtemp"]]|(% style="width:96px" %)(((
231 -[[Message Type>>||anchor="HMessageType"]]
232 -)))
225 +|(% 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**
226 +|(% 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
233 233  
234 -[[image:image-20230805104104-2.png||height="136" width="754"]]
228 +**MOD+ Alarm+ Interrupt:**
235 235  
230 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:400px" %)
231 +|(% style="background-color:#4f81bd; color:White; width:50px" %)**Size(bit)**|(% style="background-color:#4f81bd; color:White; width:60px" %)**[bit7:bit6]**|(% style="background-color:#4f81bd; color:White; width:70px" %)**bit5**|(% style="background-color:#4f81bd; color:White; width:120px" %)**bit4**
232 +|(% style="width:80px" %)Value|(% style="width:80px" %)MOD|(% style="width:89px" %)Digital Interrupt
233 + |(% style="width:167px" %)(((
234 +Distance Alarm
236 236  
237 -==== (% style="color:blue" %)**Battery Info**(%%) ====
236 +0: No Alarm;
238 238  
238 +1: Alarm
239 +)))
239 239  
240 -Check the battery voltage for DS20L.
241 +Example parse in TTNv3
241 241  
242 -Ex1: 0x0B45 = 2885mV
243 +[[image:image-20231209152917-1.png||height="300" width="1172"]]
243 243  
244 -Ex2: 0x0B49 = 2889mV
245 +(% style="color:blue" %)**Battery Info:**
245 245  
247 +Check the battery voltage for DS20L
246 246  
247 -==== (% style="color:blue" %)**DS18B20 Temperature sensor**(%%) ====
249 +Ex1: 0x0E10 = 3600mV
248 248  
249 249  
250 -This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
252 +(% style="color:blue" %)**MOD & Alarm & Interrupt:**
251 251  
254 +(% style="color:red" %)**MOD:**
252 252  
253 -**Example**:
256 +**Example: ** (0x60>>6) & 0x3f =1
254 254  
255 -If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
258 +**0x01:**  Regularly detect distance and report.
259 +**0x02: ** Uninterrupted measurement (external power supply).
256 256  
257 -If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
261 +(% style="color:red" %)**Alarm:**
258 258  
263 +When the detection distance exceeds the limit, the alarm flag is set to 1.
259 259  
260 -==== (% style="color:blue" %)**Distance**(%%) ====
265 +(% style="color:red" %)**Interrupt:**
261 261  
267 +Whether it is an external interrupt.
262 262  
263 -Represents the distance value of the measurement output, the default unit is cm, and the value range parsed as a decimal number is 0-1200. In actual use, when the signal strength value Strength.
264 264  
270 +(% style="color:blue" %)**Distance info:**
265 265  
266 266  **Example**:
267 267  
268 -If the data you get from the register is 0x0B 0xEA, the distance between the sensor and the measured object is 0BEA(H) = 3050 (D)/10 = 305cm.
274 +If payload is: 0708H: distance = 0708H = 1800 mm
269 269  
270 270  
271 -==== (% style="color:blue" %)**Distance signal strength**(%%) ====
277 +(% style="color:blue" %)**Sensor State:**
272 272  
279 +Ex1: 0x00: Distance Reading is valid
273 273  
274 -Refers to the signal strength, the default output value will be between 0-65535. When the distance measurement gear is fixed, the farther the distance measurement is, the lower the signal strength; the lower the target reflectivity, the lower the signal strength. When Strength is greater than 100 and not equal to 65535, the measured value of Dist is considered credible.
281 +Ex2: 0x0x: Distance Reading is invalid
275 275  
276 276  
277 -**Example**:
284 +(% style="color:blue" %)**Interrupt Count:**
278 278  
279 -If payload is: 01D7(H)=471(D), distance signal strength=471, 471>100,471≠65535, the measured value of Dist is considered credible.
286 +If payload is:000007D0H: count = 07D0H =2000
280 280  
281 -Customers can judge whether they need to adjust the environment based on the signal strength.
282 282  
283 283  
284 -**1) When the sensor detects valid data:**
290 +==== (% style="color:red" %)**AT+MOD~=2**(%%)** ** ====
285 285  
286 -[[image:image-20230805155335-1.png||height="145" width="724"]]
287 287  
293 +The power consumption of uninterrupted measurement is high, and the device needs to use external power supply.(The switch is switched to E and the external power supply is used.)
288 288  
289 -**2) When the sensor detects invalid data:**
295 +[[image:image-20231128133704-1.png||height="189" width="441"]]
290 290  
291 -[[image:image-20230805155428-2.png||height="139" width="726"]]
292 292  
298 +* **Set over-limit alarm mode: AT+DOL=3,500,244,**(% style="color:red" %)0(%%)**,120**
293 293  
294 -**3) When the sensor is not connected:**
300 +(% class="wikigeneratedid" id="HUninterruptedmeasurement.Whenthedistanceexceedsthelimit2CtheoutputIOissethighandreportsarereportedeveryfiveminutes.Thetimecanbesetandpoweredbyanexternalpowersupply.UplinkPayloadtotals11bytes." %)
301 +Uninterrupted measurement. When the distance exceeds the limit, the output IO high, instant alarm.
295 295  
296 -[[image:image-20230805155515-3.png||height="143" width="725"]]
303 +(% class="wikigeneratedid" %)
304 +**Uplink Payload totals 9 bytes.**
297 297  
306 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:680px" %)
307 +|(% 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" %)**2**|(% style="background-color:#4f81bd; color:white; width:70px" %)**2**|(% style="background-color:#4f81bd; color:white; width:70px" %)**2**
308 +|(% style="width:91px" %)Value|(% style="width:41px" %)BAT|(% style="width:210px" %)MOD+ DO+ Alarm+ DO flag+ Limit flag|(% style="width:74px" %)Distance |(% style="width:100px" %)Upper limit|(% style="width:119px" %)Lower limit
298 298  
299 -==== (% style="color:blue" %)**Interrupt Pin & Interrupt Level**(%%) ====
310 +**MOD+DO+ Alarm+ Do flag+ Limit flag:**
300 300  
312 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:680px" %)
313 +|(% style="background-color:#4f81bd; color:white; width:50px" %)**Size(bit)**|(% style="background-color:#4f81bd; color:white; width:60px" %)**[bit7:bit6]**|(% style="background-color:#4f81bd; color:white; width:90px" %)**bit5**|(% style="background-color:#4f81bd; color:white; width:90px" %)**bit4**|(% style="background-color:#4f81bd; color:white; width:120px" %)**bit3**|(% style="background-color:#4f81bd; color:white; width:100px" %)**[bit2:bit1:bit0]**
314 +|(% style="width:50px" %)Value|(% style="width:60px" %)MOD|(% style="width:89px" %)(((
315 +(((
316 +DO
317 +)))
301 301  
302 -This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.3.2SetInterruptMode"]] for the hardware and software set up.
319 +(((
320 +0：Within limit
303 303  
304 -Note: The Internet Pin is a separate pin in the screw terminal. See pin mapping of GPIO_EXTI .
322 +1：Out of limit
323 +)))
324 +)))|(% style="width:73px" %)(((
325 +Alarm
305 305  
306 -**Example:**
327 +0: No Alarm;
307 307  
308 -If byte[0]&0x01=0x00 : Normal uplink packet.
329 +1: Alarm
330 +)))|(% style="width:150px" %)(((
331 +DO flag
309 309  
310 -If byte[0]&0x01=0x01 : Interrupt Uplink Packet.
333 +0：the over-limit alarm mode
311 311  
335 +1：the person or object count mode
336 +)))|(% style="width:103px" %)Limit flag
337 +(0~~3)
312 312  
313 -==== (% style="color:blue" %)**LiDAR temp**(%%) ====
339 +Example parse in TTNv3
314 314  
341 +[[image:image-20231209171127-3.png||height="374" width="1209"]]
315 315  
316 -Characterize the internal temperature value of the sensor.
343 +(% style="color:blue" %)**MOD & Alarm & Do & Limit flag:**
317 317  
318 -**Example: **
319 -If payload is: 1C(H) <<24>>24=28(D),LiDAR temp=28℃.
320 -If payload is: F2(H) <<24>>24=-14(D),LiDAR temp=-14℃.
345 +(% style="color:red" %)**MOD:**
321 321  
347 +**Example: ** (0x60>>6) & 0x3f =1
322 322  
323 -==== (% style="color:blue" %)**Message Type**(%%) ====
349 +**0x01:**  Regularly detect distance and report.
350 +**0x02: ** Uninterrupted measurement (external power supply).
324 324  
352 +(% style="color:red" %)**Alarm:**
325 325  
326 -(((
327 -For a normal uplink payload, the message type is always 0x01.
328 -)))
354 +When the detection distance exceeds the limit, the alarm flag is set to 1.
329 329  
330 -(((
331 -Valid Message Type:
332 -)))
356 +(% style="color:red" %)**DO:**
333 333  
334 -(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:499px" %)
335 -|=(% style="width: 161px;background-color:#4F81BD;color:white" %)**Message Type Code**|=(% style="width: 164px;background-color:#4F81BD;color:white" %)**Description**|=(% style="width: 174px;background-color:#4F81BD;color:white" %)**Payload**
336 -|(% style="width:160px" %)0x01|(% style="width:163px" %)Normal Uplink|(% style="width:173px" %)Normal Uplink Payload
337 -|(% style="width:160px" %)0x02|(% style="width:163px" %)Reply configures info|(% style="width:173px" %)Configure Info Payload
358 +Shows the DO pin status, while there is alarm trigger, The DO pin will be set to high (3.3v), It will be set to 0 low level when there is no alarm.
338 338  
339 -[[image:image-20230805150315-4.png||height="233" width="723"]]
360 +(% style="color:red" %)**Threshold Flag for Alarm:**
340 340  
362 +Mode for setting threshold: **0~~3**
341 341  
342 -=== 2.3.3 Historical measuring distance, FPORT~=3 ===
364 +**0:** Distance limit range is not enabled, alarm:0.
343 343  
366 +**1:** Trigger Alarm if distance exceed the range between lower and upper.
344 344  
345 -DS20L stores sensor values and users can retrieve these history values via the [[downlink command>>||anchor="H2.5.4Pollsensorvalue"]].
368 +**2:** Trigger Alarm if distance smaller than the upper limit.
346 346  
347 -The historical payload includes one or multiplies entries and every entry has the same payload as Real-Time measuring distance.
370 +**3: **Trigger Alarm if distance bigger than the lower limit .
348 348  
349 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
350 -|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
351 -**Size(bytes)**
352 -)))|=(% 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
353 -|(% style="width:62.5px" %)Value|(% style="width:62.5px" %)Interrupt flag & Interrupt_level|(% style="width:62.5px" %)(((
354 -Reserve(0xFF)
355 -)))|Distance|Distance signal strength|(% style="width:88px" %)(((
356 -LiDAR temp
357 -)))|(% style="width:85px" %)Unix TimeStamp
358 358  
359 -**Interrupt flag & Interrupt level:**
373 +(% style="color:blue" %)**Distance:**
360 360  
361 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
362 -|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
363 -**Size(bit)**
364 -)))|=(% 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**
365 -|(% 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" %)(((
366 -Interrupt flag
367 -)))
375 + Actual sampling distance values.
368 368  
369 -* (((
370 -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.
371 -)))
377 +**Example:**
372 372  
373 -For example, in the US915 band, the max payload for different DR is:
379 +**AT+DOL=1,500,244,**(% style="color:red" %)0(%%)**,120  **
374 374  
375 -**a) DR0:** max is 11 bytes so one entry of data
381 +The distance is detected every 120ms.
376 376  
377 -**b) DR1:** max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
383 +When the actual detection value is within the range of [244mm,500mm], the data is uploaded in the normal TDC time.
378 378  
379 -**c) DR2:** total payload includes 11 entries of data
385 +When the actual detection value is outside the range of [244mm,500mm], the uplink data will be immediately alerted.
380 380  
381 -**d) DR3:** total payload includes 22 entries of data.
387 +If payload is: 0708H: distance = 0708H = 1800 mm
382 382  
383 -If DS20L doesn't have any data in the polling time. It will uplink 11 bytes of 0
384 384  
390 +(% style="color:blue" %)**Upper limit:**
385 385  
386 -**Downlink:**
392 +Show the pre-set upper limit in Hex, Unit: mm.
387 387  
388 -0x31 64 CC 68 0C 64 CC 69 74 05
394 +Ex: 01F4(H)=500mm
389 389  
390 -[[image:image-20230805144936-2.png||height="113" width="746"]]
391 391  
392 -**Uplink:**
397 +(% style="color:blue" %)**Lower limit:**
393 393  
394 -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
399 +Show the pre-set lower limit in Hex, Unit: mm.
395 395  
401 +Ex: 0xF4(H)=244mm
396 396  
397 -**Parsed Value:**
398 398  
399 -[DISTANCE , DISTANCE_SIGNAL_STRENGTH，LIDAR_TEMP，EXTI_STATUS , EXTI_FLAG , TIME]
404 +* **Set the person or object count mode: AT+DOL=1,500,244,**(% style="color:red" %)1(%%)**,120**
400 400  
406 +Continuous measurement, detect and count people or things passing by in distance limit mode.
401 401  
402 -[360,176,30,High,True,2023-08-04 02:53:00],
408 +**Uplink Payload totals 11 bytes.**
403 403  
404 -[355,168,30,Low,False,2023-08-04 02:53:29],
410 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:680px" %)
411 +|(% 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**
412 +|(% style="width:91px" %)Value|(% style="width:41px" %)BAT|(% style="width:210px" %)MOD+ DO+ Alarm+ DO flag+ Limit flag|(% style="width:176px" %)Distance limit alarm count|(% style="width:100px" %)Upper limit|(% style="width:119px" %)Lower limit
405 405  
406 -[245,211,30,Low,False,2023-08-04 02:54:29],
414 +**MOD+DO+ Alarm+ Do flag+ Limit flag:**
407 407  
408 -[57,700,30,Low,False,2023-08-04 02:55:29],
416 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:680px" %)
417 +|(% style="background-color:#4f81bd; color:white; width:50px" %)**Size(bit)**|(% style="background-color:#4f81bd; color:white; width:60px" %)**[bit7:bit6]**|(% style="background-color:#4f81bd; color:white; width:90px" %)**bit5**|(% style="background-color:#4f81bd; color:white; width:90px" %)**bit4**|(% style="background-color:#4f81bd; color:white; width:120px" %)**bit3**|(% style="background-color:#4f81bd; color:white; width:100px" %)**[bit2:bit1:bit0]**
418 +|(% style="width:50px" %)Value|(% style="width:60px" %)MOD|(% style="width:89px" %)(((
419 +(((
420 +DO
421 +)))
409 409  
410 -[361,164,30,Low,True,2023-08-04 02:56:00],
423 +(((
424 +0：Within limit
411 411  
412 -[337,184,30,Low,False,2023-08-04 02:56:40],
426 +1：Out of limit
427 +)))
428 +)))|(% style="width:73px" %)(((
429 +Alarm
413 413  
414 -[20,4458,30,Low,False,2023-08-04 02:57:40],
431 +0: No Alarm;
415 415  
416 -[362,173,30,Low,False,2023-08-04 02:58:53],
433 +1: Alarm
434 +)))|(% style="width:150px" %)(((
435 +DO flag
417 417  
437 +0：the over-limit alarm mode
418 418  
419 -**History read from serial port：**
439 +1：the person or object count mode
440 +)))|(% style="width:103px" %)Limit flag
441 +(0~~3)
420 420  
421 -[[image:image-20230805145056-3.png]]
443 +Example parse in TTNv3
422 422  
445 +[[image:image-20231209173457-5.png||height="277" width="1098"]]
423 423  
424 -=== 2.3.4 Decode payload in The Things Network ===
447 +(% style="color:blue" %)**MOD & Alarm & Do & Limit flag:**
425 425  
449 +(% style="color:red" %)**MOD:**
426 426  
427 -While using TTN network, you can add the payload format to decode the payload.
451 +**Example: ** (0x60>>6) & 0x3f =1
428 428  
429 -[[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"]]
453 +**0x01:**  Regularly detect distance and report.
454 +**0x02: ** Uninterrupted measurement (external power supply).
430 430  
456 +(% style="color:red" %)**Alarm:**
431 431  
432 -(((
433 -The payload decoder function for TTN is here:
434 -)))
458 +When the detection distance exceeds the limit, the alarm flag is set to 1.
435 435  
436 -(((
437 -DS20L TTN Payload Decoder:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
438 -)))
460 +(% style="color:red" %)**Do:**
439 439  
462 +Shows the DO pin status, while there is alarm trigger, The DO pin will be set to high (3.3v), It will be set to 0 low level when there is no alarm.
440 440  
441 -== 2.4 ​Show Data in DataCake IoT Server ==
464 +(% style="color:red" %)**Threshold Flag for Alarm:**
442 442  
466 +Mode for setting threshold: **0~~3**
443 443  
444 -(((
445 -[[DATACAKE>>url:https://datacake.co/]] provides a human friendly interface to show the sensor data, once we have data in TTN, we can use [[DATACAKE>>url:https://datacake.co/]] to connect to TTN and see the data in DATACAKE. Below are the steps:
446 -)))
468 +**0:** does not use upper and lower limits
447 447  
470 +**1:** Use upper and lower limits
448 448  
449 -(((
450 -(% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
451 -)))
472 +**2:** Less than the upper limit
452 452  
453 -(((
454 -(% style="color:blue" %)**Step 2**(%%)**: To configure the Application to forward data to DATACAKE you will need to add integration. To add the DATACAKE integration, perform the following steps:**
455 -)))
474 +**3: **Greater than the lower limit
456 456  
457 457  
458 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654592790040-760.png?rev=1.1||alt="1654592790040-760.png"]]
477 +(% style="color:blue" %)**Distance limit alarm count:**
459 459  
479 +People or objects are collected and counted within a limited distance.
460 460  
461 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654592800389-571.png?rev=1.1||alt="1654592800389-571.png"]]
481 +The detection of a stationary person or object at each sampling time will be repeated three times, and the fourth sampling count will be added by 1.
462 462  
483 +**Example:**
463 463  
464 -(% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
485 +**AT+DOL=1,500,244,**(% style="color:red" %)1(%%)**,120   **
465 465  
466 -(% style="color:blue" %)**Step 4**(%%)**: Search the DS20L and add DevEUI.**
487 +People or objects passing within the distance range of [244mm,500mm] are detected and counted every 120ms.
467 467  
468 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654851029373-510.png?rev=1.1||alt="1654851029373-510.png"]]
489 +If payload is: 0x56H, interrupt count =0x56H =86
469 469  
470 470  
471 -After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
492 +(% style="color:blue" %)**Upper limit:**
472 472  
473 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/image-20220610165129-11.png?width=1088&height=595&rev=1.1||alt="image-20220610165129-11.png"]]
494 +Show the pre-set upper limit in Hex, Unit: mm.
474 474  
496 +Ex: 01F4(H)=500mm
475 475  
476 -== 2.5 Datalog Feature ==
477 477  
499 +(% style="color:blue" %)**Lower limit:**
478 478  
479 -Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, DS20L will store the reading for future retrieving purposes.
501 +Show the pre-set lower limit in Hex, Unit: mm.
480 480  
503 +Ex: 0xF4(H)=244mm
481 481  
482 -=== 2.5.1 Ways to get datalog via LoRaWAN ===
483 483  
506 +== 2.4 Decode payload in The Things Network ==
484 484  
485 -Set PNACKMD=1, DS20L will wait for ACK for every uplink, when there is no LoRaWAN network, DS20L 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.
486 486  
487 -* (((
488 -a) DS20L will do an ACK check for data records sending to make sure every data arrive server.
489 -)))
490 -* (((
491 -b) DS20L will send data in **CONFIRMED Mode** when PNACKMD=1, but DS20L 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 DS20L gets a ACK, DS20L will consider there is a network connection and resend all NONE-ACK messages.
492 -)))
509 +While using TTN network, you can add the payload format to decode the payload.
493 493  
494 -=== 2.5.2 Unix TimeStamp ===
511 +[[image:image-20231206143515-1.png||height="534" width="759"]]
495 495  
496 496  
497 -DS20L uses Unix TimeStamp format based on
514 +(((
515 +The payload decoder function for TTN is here:
516 +)))
498 498  
499 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/WebHome/image-20220523001219-11.png?width=627&height=97&rev=1.1||alt="图片-20220523001219-11.png" height="97" width="627"]]
518 +(((
519 +DS20L TTN Payload Decoder:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
520 +)))
500 500  
501 -User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
502 502  
503 -Below is the converter example
523 +== 2.5 ​Show Data in DataCake IoT Server ==
504 504  
505 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/WebHome/image-20220523001219-12.png?width=720&height=298&rev=1.1||alt="图片-20220523001219-12.png" height="298" width="720"]]
506 506  
526 +(((
527 +[[DATACAKE>>url:https://datacake.co/]] provides a human friendly interface to show the sensor data, onhuman-friendlya in TTN, we can use [[DATACAKE>>url:https://datacake.co/]] to connect to TTN and see the data in DATACAKE. Below are the steps:
528 +)))
507 507  
508 -So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
509 509  
531 +(((
532 +(% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
533 +)))
510 510  
511 -=== 2.5.3 Set Device Time ===
535 +(((
536 +(% style="color:blue" %)**Step 2**(%%)**: To configure the Application to forward data to DATACAKE you will need to add integration. To add the DATACAKE integration, perform the following steps:**
537 +)))
512 512  
513 513  
514 -User need to set (% style="color:blue" %)**SYNCMOD=1**(%%) to enable sync time via MAC command.
540 +[[image:image-20231207153532-6.png||height="562" width="861"]]
515 515  
516 -Once DS20L Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to DS20L. If DS20L fails to get the time from the server, DS20L will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
517 517  
518 -(% style="color:red" %)**Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn't support. If server doesn't support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.**
543 +[[image:image-20231207155940-8.png]]
519 519  
545 +For more detailed instructions, refer to the following instructions: [[Welcome - Datacake Docs>>url:https://docs.datacake.de/]]
520 520  
521 -=== 2.5.4 Poll sensor value ===
547 +[[image:image-20231207160733-11.png||height="429" width="759"]]
522 522  
523 523  
524 -Users can poll sensor values based on timestamps. Below is the downlink command.
550 +(% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
525 525  
526 -(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:425.818px" %)
527 -|(% colspan="4" style="background-color:#4f81bd; color:white; width:423px" %)**Downlink Command to poll Open/Close status (0x31)**
528 -|(% style="width:58px" %)**1byte**|(% style="width:127px" %)**4bytes**|(% style="width:124px" %)**4bytes**|(% style="width:114px" %)**1byte**
529 -|(% style="width:58px" %)31|(% style="width:127px" %)Timestamp start|(% style="width:124px" %)Timestamp end|(% style="width:114px" %)Uplink Interval
552 +(% style="color:blue" %)**Step 4**(%%)**: Search the DS20L and add DevEUI.**
530 530  
531 -(((
532 -Timestamp start and Timestamp end-use Unix TimeStamp format as mentioned above. Devices will reply with all data logs during this period, using the uplink interval.
533 -)))
554 +[[image:image-20231207160343-10.png||height="665" width="705"]]
534 534  
535 -(((
536 -For example, downlink command [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/CPL01%20LoRaWAN%20Outdoor%20PulseContact%20%20Sensor%20Manual/WebHome/image-20220518162852-1.png?rev=1.1||alt="image-20220518162852-1.png"]]
537 -)))
538 538  
539 -(((
540 -Is to check 2021/11/12 12:00:00 to 2021/11/12 15:00:00's data
541 -)))
557 +After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
542 542  
543 -(((
544 -Uplink Internal =5s，means DS20L will send one packet every 5s. range 5~~255s.
545 -)))
559 +[[image:image-20231129100454-2.png||height="501" width="928"]]
546 546  
547 547  
548 548  == 2.6 Frequency Plans ==
... ... @@ -553,7 +553,7 @@
553 553  [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]
554 554  
555 555  
556 -3. Configure DS20L
570 += 3. Configure DS20L =
557 557  
558 558  == 3.1 Configure Methods ==
559 559  
... ... @@ -560,12 +560,11 @@
560 560  
561 561  DS20L supports below configure method:
562 562  
563 -* AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
564 -
565 565  * AT Command via UART Connection : See [[UART Connection>>http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H2.3UARTConnectionforSN50v3basemotherboard]].
566 566  
567 567  * LoRaWAN Downlink.  Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
568 568  
581 +
569 569  == 3.2 General Commands ==
570 570  
571 571  
... ... @@ -583,7 +583,7 @@
583 583  == 3.3 Commands special design for DS20L ==
584 584  
585 585  
586 -These commands only valid for DS20L, as below:
599 +Below commands only valid for DS20L, as below:
587 587  
588 588  
589 589  === 3.3.1 Set Transmit Interval Time ===
... ... @@ -625,7 +625,7 @@
625 625  Example 1: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
626 626  )))
627 627  * (((
628 -Example 2: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds 
641 +Example 2: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
629 629  
630 630  
631 631  
... ... @@ -648,7 +648,7 @@
648 648  the mode is 0 =Disable Interrupt
649 649  )))
650 650  |(% style="width:154px" %)(((
651 -AT+INTMOD=2
664 +AT+INTMOD=3
652 652  
653 653  (default)
654 654  )))|(% style="width:196px" %)(((
... ... @@ -669,6 +669,117 @@
669 669  
670 670  * Example 2: Downlink Payload: 06000003  ~/~/  Set the interrupt mode to rising edge trigger
671 671  
685 +=== 3.3.3 Set work mode ===
686 +
687 +
688 +Feature: Switch working mode
689 +
690 +(% style="color:blue" %)**AT Command: AT+MOD**
691 +
692 +(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
693 +|=(% style="width: 162px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 193px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 155px;background-color:#4F81BD;color:white" %)**Response**
694 +|(% style="width:162px" %)AT+MOD=?|(% style="width:191px" %)Get the current working mode.|(% style="width:106px" %)OK
695 +|(% style="width:162px" %)AT+MOD=1|(% style="width:191px" %)Set the working mode to Regular measurements.|(% style="width:106px" %)(((
696 +OK
697 +Attention:Take effect after ATZ
698 +)))
699 +
700 +(% style="color:blue" %)**Downlink Command:**
701 +
702 +* **Example: **0x0A01 ~/~/  Same as AT+MOD=1
703 +
704 +* **Example:** 0x0A02  ~/~/  Same as AT+MOD=2
705 +
706 +=== 3.3.4 Set threshold and threshold mode ===
707 +
708 +
709 +Feature, Set threshold and threshold mode
710 +
711 +When (% style="color:#037691" %)**AT+DOL=0,0,0,0,400**(%%) is set, No threshold is used, the sampling time is 400ms.
712 +
713 +(% style="color:blue" %)**AT Command: AT+DOL**
714 +
715 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
716 +|(% style="background-color:#4f81bd; color:white; width:162px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:240px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:108px" %)**Response**
717 +|(% style="width:172px" %)AT+ DOL =?|(% style="width:279px" %)Get the current threshold mode and sampling time|(% style="width:118px" %)(((
718 +0,0,0,0,400
719 +OK
720 +)))
721 +|(% style="width:172px" %)AT+ DOL =1,1800,100,0,400|(% style="width:279px" %)Set only the upper and lower thresholds|(% style="width:118px" %)OK
722 +
723 +(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
724 +|=(% style="width: 162px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 193px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 155px;background-color:#4F81BD;color:white" %) Parameter
725 +|(% rowspan="11" style="color:blue; width:120px" %)(((
726 +
727 +
728 +
729 +
730 +
731 +
732 +
733 +
734 +
735 +
736 +
737 +**AT+DOL=1,1800,3,0,400**
738 +)))|(% rowspan="4" style="width:240px" %)(((
739 +
740 +
741 +
742 +
743 +The first bit sets the limit mode
744 +)))|(% style="width:150px" %)0: Do not use upper and lower limits
745 +|(% style="width:251px" %)1: Use upper and lower limits
746 +|(% style="width:251px" %)2:Less than the upper limit
747 +|(% style="width:251px" %)3: Greater than the lower limit
748 +|(% style="width:226px" %)The second bit sets the upper limit value|(% style="width:251px" %)3~~2000MM
749 +|(% style="width:226px" %)The third bit sets the lower limit value|(% style="width:251px" %)3~~2000MM
750 +|(% rowspan="2" style="width:226px" %)The fourth bit sets the over-limit alarm or person or object count.|(% style="width:251px" %)0 Over-limit alarm, DO output is high
751 +|(% style="width:251px" %)1 Person or object counting statistics
752 +|(% style="width:226px" %)The fifth bit sets the sampling time|(% style="width:251px" %)(((
753 +100~~10000ms
754 +
755 +
756 +)))
757 +
758 +(% style="color:blue" %)**Downlink Command: 0x07**
759 +
760 +Format: Command Code (0x07) followed by 9 bytes.
761 +
762 +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.
763 +
764 +* Example 0: Downlink Payload: 07 00 0000 0000 00 0190  **~-~-->**  AT+MOD=0,0,0,0,400
765 +
766 +* Example 1: Downlink Payload: 070107080064000190  **~-~-->**  AT+MOD=1,1800,100,0,400
767 +
768 +* Example 2: Downlink Payload: 070200000064000190  **~-~-->**  AT+MOD=2,1800,100,0,400
769 +
770 +* Example 3: Downlink Payload: 070300000064000190  **~-~-->**  AT+MOD=3,0,100,0,400
771 +
772 +(% style="color:Red" %)**Note: The over-limit alarm is applied to MOD1 and MOD2.**
773 +
774 +**For example:**
775 +
776 +* **AT+MOD=1**
777 +
778 + **AT+DOL=1,500,244,**(% style="color:blue" %)0(%%)**,300**
779 +
780 +Send data according to the normal TDC time. If the mode limit is exceeded, the alarm flag is set to 1:
781 +
782 +[[image:image-20231211113204-2.png||height="292" width="1093"]]
783 +
784 +* **AT+MOD=2  **
785 +
786 + **AT+DOL=1,500,244,**(% style="color:blue" %)0(%%)**,300**
787 +
788 +If the mode limit is exceeded, the data is immediately uplink and the alarm flag is set to 1:
789 +
790 +[[image:image-20231211114932-3.png||height="277" width="1248"]]
791 +
792 +
793 +
794 +
795 +
672 672  = 4. Battery & Power Consumption =
673 673  
674 674  
... ... @@ -705,6 +705,33 @@
705 705  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"]]
706 706  
707 707  
832 +== 6.2 DS20L programming line ==
833 +
834 +
835 +缺图 后续补上
836 +
837 +feature:
838 +
839 +for AT commands
840 +
841 +Update the firmware of DS20L
842 +
843 +Support interrupt mode
844 +
845 +
846 +== 6.3 LiDAR probe position ==
847 +
848 +
849 +[[image:1701155390576-216.png||height="285" width="307"]]
850 +
851 +The black oval hole in the picture is the LiDAR probe.
852 +
853 +
854 +== 6.4 Interface definition ==
855 +
856 +[[image:image-20231128151132-2.png||height="305" width="557"]]
857 +
858 +
708 708  = 7. Trouble Shooting =
709 709  
710 710  == 7.1 AT Command input doesn't work ==
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