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Last modified by Mengting Qiu on 2023/12/14 11:15
From version 116.1
edited by kai
on 2023/11/11 17:02
Change comment: There is no comment for this version
To version 171.2
edited by Mengting Qiu
on 2023/12/12 11:46
Change comment: There is no comment for this version

Summary

Details

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Author
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1 -XWiki.kai
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
... ... @@ -60,22 +60,34 @@
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 -**Battery Power Mode:**
65 +(% 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 -**Continuously mode**:
70 +(% style="color:#037691" %)**Continuously mode**:
75 75  
76 76  * Idle: 21 mA @ 3.3v
77 77  * Max : 360 mA
78 78  
75 +== 1.5 Use Case ==
76 +
77 +(% class="mark" %)**Regular Distance Detect**
78 +
79 +[[image:image-20231211220922-1.png||height="352" width="605"]]
80 +
81 +
82 +(% class="mark" %)**Counting / Alarm**
83 +
84 +[[image:image-20231211221253-2.png]]
85 +
86 +
87 +[[image:image-20231211221436-3.png]]
88 +
89 +
79 79  = 2. Configure DS20L to connect to LoRaWAN network =
80 80  
81 81  == 2.1 How it works ==
... ... @@ -94,7 +94,7 @@
94 94  
95 95  [[image:image-20231110102635-5.png||height="402" width="807"]](% style="display:none" %)
96 96  
97 -(% 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. ===
98 98  
99 99  Each DS20L is shipped with a sticker with the default device EUI as below:
100 100  
... ... @@ -101,40 +101,36 @@
101 101  [[image:image-20230426084152-1.png||alt="图片-20230426084152-1.png" height="233" width="502"]]
102 102  
103 103  
104 -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:
105 105  
106 106  
107 107  (% style="color:blue" %)**Register the device**
108 108  
109 -[[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"]]
110 110  
111 111  
112 -(% style="color:blue" %)**Add APP EUI and DEV EUI**
123 +(% style="color:blue" %)**Add DevEUI and AppKey**
113 113  
114 -[[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"]]
115 115  
116 116  
117 -(% style="color:blue" %)**Add APP EUI in the application**
118 118  
129 +=== Step 2: Activate DS20L ===
119 119  
120 -[[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"]]
121 121  
133 +Press the button for 5 seconds to activate the DS20L.
122 122  
123 -(% style="color:blue" %)**Add APP KEY**
135 +The switch is switched to (% style="color:blue" %)**E** (%%)and the external power supply is used.
124 124  
125 -[[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.
126 126  
127 -
128 -(% style="color:blue" %)**Step 2:**(%%) Activate on DS20L
129 -
130 -
131 -Press the button for 5 seconds to activate the DS20L.
132 -
133 133  (% 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.
134 134  
135 135  After join success, it will start to upload messages to TTN and you can see the messages in the panel.
136 136  
137 137  
144 +
138 138  == 2.3 ​Uplink Payload ==
139 139  
140 140  === 2.3.1 Device Status, FPORT~=5 ===
... ... @@ -152,9 +152,9 @@
152 152  
153 153  Example parse in TTNv3
154 154  
155 -[[image:image-20230805103904-1.png||height="131" width="711"]]
162 +[[image:image-20231206151412-3.png||height="179" width="1070"]]
156 156  
157 -(% style="color:blue" %)**Sensor Model**(%%): For DS20L, this value is 0x24
164 +(% style="color:blue" %)**Sensor Model**(%%): For DS20L, this value is 0x21
158 158  
159 159  (% style="color:blue" %)**Firmware Version**(%%): 0x0100, Means: v1.0.0 version
160 160  
... ... @@ -208,338 +208,348 @@
208 208  === 2.3.2 Uplink Payload, FPORT~=2 ===
209 209  
210 210  
211 -(((
212 -DS20L will send this uplink **after** Device Status once join the LoRaWAN network successfully. And DS20L will:
218 +==== (% style="color:red" %)**AT+MOD~=1**(%%) ====
213 213  
214 -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.
215 215  
216 -Uplink Payload totals 11 bytes.
217 -)))
222 +**Uplink Payload totals 10 bytes.**
218 218  
219 219  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
220 -|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
221 -**Size(bytes)**
222 -)))|=(% 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**
223 -|(% style="width:62.5px" %)Value|(% style="width:62.5px" %)[[BAT>>||anchor="HBatteryInfo"]]|(% style="width:62.5px" %)(((
224 -[[Temperature DS18B20>>||anchor="HDS18B20Temperaturesensor"]]
225 -)))|[[Distance>>||anchor="HDistance"]]|[[Distance signal strength>>||anchor="HDistancesignalstrength"]]|(% style="width:122px" %)(((
226 -[[Interrupt flag & Interrupt_level>>||anchor="HInterruptPin26A0InterruptLevel"]]
227 -)))|(% style="width:54px" %)[[LiDAR temp>>||anchor="HLiDARtemp"]]|(% style="width:96px" %)(((
228 -[[Message Type>>||anchor="HMessageType"]]
229 -)))
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
230 230  
231 -[[image:image-20230805104104-2.png||height="136" width="754"]]
228 +**MOD+ Alarm+ Interrupt:**
232 232  
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
233 233  
234 -==== (% style="color:blue" %)**Battery Info**(%%) ====
236 +0: No Alarm;
235 235  
238 +1: Alarm
239 +)))
236 236  
237 -Check the battery voltage for DS20L.
241 +Example parse in TTNv3
238 238  
239 -Ex1: 0x0B45 = 2885mV
243 +[[image:image-20231209152917-1.png||height="300" width="1172"]]
240 240  
241 -Ex2: 0x0B49 = 2889mV
245 +(% style="color:blue" %)**Battery Info:**
242 242  
247 +Check the battery voltage for DS20L
243 243  
244 -==== (% style="color:blue" %)**DS18B20 Temperature sensor**(%%) ====
249 +Ex1: 0x0E10 = 3600mV
245 245  
246 246  
247 -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:**
248 248  
254 +(% style="color:red" %)**MOD:**
249 249  
250 -**Example**:
256 +**Example: ** (0x60>>6) & 0x3f =1
251 251  
252 -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).
253 253  
254 -If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
261 +(% style="color:red" %)**Alarm:**
255 255  
263 +When the detection distance exceeds the limit, the alarm flag is set to 1.
256 256  
257 -==== (% style="color:blue" %)**Distance**(%%) ====
265 +(% style="color:red" %)**Interrupt:**
258 258  
267 +Whether it is an external interrupt.
259 259  
260 -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.
261 261  
270 +(% style="color:blue" %)**Distance info:**
262 262  
263 263  **Example**:
264 264  
265 -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
266 266  
267 267  
268 -==== (% style="color:blue" %)**Distance signal strength**(%%) ====
277 +(% style="color:blue" %)**Sensor State:**
269 269  
279 +Ex1: 0x00: Distance Reading is valid
270 270  
271 -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
272 272  
273 273  
274 -**Example**:
284 +(% style="color:blue" %)**Interrupt Count:**
275 275  
276 -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
277 277  
278 -Customers can judge whether they need to adjust the environment based on the signal strength.
279 279  
280 280  
281 -**1) When the sensor detects valid data:**
290 +==== (% style="color:red" %)**AT+MOD~=2**(%%)** ** ====
282 282  
283 -[[image:image-20230805155335-1.png||height="145" width="724"]]
284 284  
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.)
285 285  
286 -**2) When the sensor detects invalid data:**
295 +[[image:image-20231128133704-1.png||height="189" width="441"]]
287 287  
288 -[[image:image-20230805155428-2.png||height="139" width="726"]]
289 289  
298 +* **Set over-limit alarm mode: AT+DOL=3,500,244,**(% style="color:red" %)0(%%)**,120**
290 290  
291 -**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.
292 292  
293 -[[image:image-20230805155515-3.png||height="143" width="725"]]
303 +(% class="wikigeneratedid" %)
304 +**Uplink Payload totals 9 bytes.**
294 294  
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
295 295  
296 -==== (% style="color:blue" %)**Interrupt Pin & Interrupt Level**(%%) ====
310 +**MOD+DO+ Alarm+ Do flag+ Limit flag:**
297 297  
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 +)))
298 298  
299 -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
300 300  
301 -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
302 302  
303 -**Example:**
327 +0: No Alarm;
304 304  
305 -If byte[0]&0x01=0x00 : Normal uplink packet.
329 +1: Alarm
330 +)))|(% style="width:150px" %)(((
331 +DO flag
306 306  
307 -If byte[0]&0x01=0x01 : Interrupt Uplink Packet.
333 +0：the over-limit alarm mode
308 308  
335 +1：the person or object count mode
336 +)))|(% style="width:103px" %)Limit flag
337 +(0~~3)
309 309  
310 -==== (% style="color:blue" %)**LiDAR temp**(%%) ====
339 +Example parse in TTNv3
311 311  
341 +[[image:image-20231209171127-3.png||height="374" width="1209"]]
312 312  
313 -Characterize the internal temperature value of the sensor.
343 +(% style="color:blue" %)**MOD & Alarm & Do & Limit flag:**
314 314  
315 -**Example: **
316 -If payload is: 1C(H) <<24>>24=28(D),LiDAR temp=28℃.
317 -If payload is: F2(H) <<24>>24=-14(D),LiDAR temp=-14℃.
345 +(% style="color:red" %)**MOD:**
318 318  
347 +**Example: ** (0x60>>6) & 0x3f =1
319 319  
320 -==== (% style="color:blue" %)**Message Type**(%%) ====
349 +**0x01:**  Regularly detect distance and report.
350 +**0x02: ** Uninterrupted measurement (external power supply).
321 321  
352 +(% style="color:red" %)**Alarm:**
322 322  
323 -(((
324 -For a normal uplink payload, the message type is always 0x01.
325 -)))
354 +When the detection distance exceeds the limit, the alarm flag is set to 1.
326 326  
327 -(((
328 -Valid Message Type:
329 -)))
356 +(% style="color:red" %)**DO:**
330 330  
331 -(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:499px" %)
332 -|=(% 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**
333 -|(% style="width:160px" %)0x01|(% style="width:163px" %)Normal Uplink|(% style="width:173px" %)Normal Uplink Payload
334 -|(% 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.
335 335  
336 -[[image:image-20230805150315-4.png||height="233" width="723"]]
360 +(% style="color:red" %)**Threshold Flag for Alarm:**
337 337  
362 +Mode for setting threshold: **0~~3**
338 338  
339 -=== 2.3.3 Historical measuring distance, FPORT~=3 ===
364 +**0:** Distance limit range is not enabled, alarm:0.
340 340  
366 +**1:** Trigger Alarm if distance exceed the range between lower and upper.
341 341  
342 -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.
343 343  
344 -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 .
345 345  
346 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
347 -|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
348 -**Size(bytes)**
349 -)))|=(% 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
350 -|(% style="width:62.5px" %)Value|(% style="width:62.5px" %)Interrupt flag & Interrupt_level|(% style="width:62.5px" %)(((
351 -Reserve(0xFF)
352 -)))|Distance|Distance signal strength|(% style="width:88px" %)(((
353 -LiDAR temp
354 -)))|(% style="width:85px" %)Unix TimeStamp
355 355  
356 -**Interrupt flag & Interrupt level:**
373 +(% style="color:blue" %)**Distance:**
357 357  
358 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
359 -|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
360 -**Size(bit)**
361 -)))|=(% 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**
362 -|(% 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" %)(((
363 -Interrupt flag
364 -)))
375 + Actual sampling distance values.
365 365  
366 -* (((
367 -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.
368 -)))
377 +**Example:**
369 369  
370 -For example, in the US915 band, the max payload for different DR is:
379 +**AT+DOL=1,500,244,**(% style="color:red" %)0(%%)**,120  **
371 371  
372 -**a) DR0:** max is 11 bytes so one entry of data
381 +The distance is detected every 120ms.
373 373  
374 -**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.
375 375  
376 -**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.
377 377  
378 -**d) DR3:** total payload includes 22 entries of data.
387 +If payload is: 0708H: distance = 0708H = 1800 mm
379 379  
380 -If DS20L doesn't have any data in the polling time. It will uplink 11 bytes of 0
381 381  
390 +(% style="color:blue" %)**Upper limit:**
382 382  
383 -**Downlink:**
392 +Show the pre-set upper limit in Hex, Unit: mm.
384 384  
385 -0x31 64 CC 68 0C 64 CC 69 74 05
394 +Ex: 01F4(H)=500mm
386 386  
387 -[[image:image-20230805144936-2.png||height="113" width="746"]]
388 388  
389 -**Uplink:**
397 +(% style="color:blue" %)**Lower limit:**
390 390  
391 -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.
392 392  
401 +Ex: 0xF4(H)=244mm
393 393  
394 -**Parsed Value:**
395 395  
396 -[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**
397 397  
406 +Continuous measurement, detect and count people or things passing by in distance limit mode.
398 398  
399 -[360,176,30,High,True,2023-08-04 02:53:00],
408 +**Uplink Payload totals 11 bytes.**
400 400  
401 -[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
402 402  
403 -[245,211,30,Low,False,2023-08-04 02:54:29],
414 +**MOD+DO+ Alarm+ Do flag+ Limit flag:**
404 404  
405 -[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 +)))
406 406  
407 -[361,164,30,Low,True,2023-08-04 02:56:00],
423 +(((
424 +0：Within limit
408 408  
409 -[337,184,30,Low,False,2023-08-04 02:56:40],
426 +1：Out of limit
427 +)))
428 +)))|(% style="width:73px" %)(((
429 +Alarm
410 410  
411 -[20,4458,30,Low,False,2023-08-04 02:57:40],
431 +0: No Alarm;
412 412  
413 -[362,173,30,Low,False,2023-08-04 02:58:53],
433 +1: Alarm
434 +)))|(% style="width:150px" %)(((
435 +DO flag
414 414  
437 +0：the over-limit alarm mode
415 415  
416 -**History read from serial port：**
439 +1：the person or object count mode
440 +)))|(% style="width:103px" %)Limit flag
441 +(0~~3)
417 417  
418 -[[image:image-20230805145056-3.png]]
443 +Example parse in TTNv3
419 419  
445 +[[image:image-20231209173457-5.png||height="277" width="1098"]]
420 420  
421 -=== 2.3.4 Decode payload in The Things Network ===
447 +(% style="color:blue" %)**MOD & Alarm & Do & Limit flag:**
422 422  
449 +(% style="color:red" %)**MOD:**
423 423  
424 -While using TTN network, you can add the payload format to decode the payload.
451 +**Example: ** (0x60>>6) & 0x3f =1
425 425  
426 -[[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).
427 427  
456 +(% style="color:red" %)**Alarm:**
428 428  
429 -(((
430 -The payload decoder function for TTN is here:
431 -)))
458 +When the detection distance exceeds the limit, the alarm flag is set to 1.
432 432  
433 -(((
434 -DS20L TTN Payload Decoder:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
435 -)))
460 +(% style="color:red" %)**Do:**
436 436  
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.
437 437  
438 -== 2.4 ​Show Data in DataCake IoT Server ==
464 +(% style="color:red" %)**Threshold Flag for Alarm:**
439 439  
466 +Mode for setting threshold: **0~~3**
440 440  
441 -(((
442 -[[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:
443 -)))
468 +**0:** does not use upper and lower limits
444 444  
470 +**1:** Use upper and lower limits
445 445  
446 -(((
447 -(% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
448 -)))
472 +**2:** Less than the upper limit
449 449  
450 -(((
451 -(% 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:**
452 -)))
474 +**3: **Greater than the lower limit
453 453  
454 454  
455 -[[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:**
456 456  
479 +People or objects are collected and counted within a limited distance.
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/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.
459 459  
483 +**Example:**
460 460  
461 -(% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
485 +**AT+DOL=1,500,244,**(% style="color:red" %)1(%%)**,120   **
462 462  
463 -(% 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.
464 464  
465 -[[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
466 466  
467 467  
468 -After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
492 +(% style="color:blue" %)**Upper limit:**
469 469  
470 -[[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.
471 471  
496 +Ex: 01F4(H)=500mm
472 472  
473 -== 2.5 Datalog Feature ==
474 474  
499 +(% style="color:blue" %)**Lower limit:**
475 475  
476 -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.
477 477  
503 +Ex: 0xF4(H)=244mm
478 478  
479 -=== 2.5.1 Ways to get datalog via LoRaWAN ===
480 480  
506 +== 2.4 Decode payload in The Things Network ==
481 481  
482 -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.
483 483  
484 -* (((
485 -a) DS20L will do an ACK check for data records sending to make sure every data arrive server.
486 -)))
487 -* (((
488 -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.
489 -)))
509 +While using TTN network, you can add the payload format to decode the payload.
490 490  
491 -=== 2.5.2 Unix TimeStamp ===
511 +[[image:image-20231206143515-1.png||height="534" width="759"]]
492 492  
493 493  
494 -DS20L uses Unix TimeStamp format based on
514 +(((
515 +The payload decoder function for TTN is here:
516 +)))
495 495  
496 -[[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 +)))
497 497  
498 -User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
499 499  
500 -Below is the converter example
523 +== 2.5 ​Show Data in DataCake IoT Server ==
501 501  
502 -[[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"]]
503 503  
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 +)))
504 504  
505 -So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
506 506  
531 +(((
532 +(% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
533 +)))
507 507  
508 -=== 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 +)))
509 509  
510 510  
511 -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"]]
512 512  
513 -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).
514 514  
515 -(% 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]]
516 516  
545 +For more detailed instructions, refer to the following instructions: [[Welcome - Datacake Docs>>url:https://docs.datacake.de/]]
517 517  
518 -=== 2.5.4 Poll sensor value ===
547 +[[image:image-20231207160733-11.png||height="429" width="759"]]
519 519  
520 520  
521 -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.**
522 522  
523 -(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:425.818px" %)
524 -|(% colspan="4" style="background-color:#4f81bd; color:white; width:423px" %)**Downlink Command to poll Open/Close status (0x31)**
525 -|(% style="width:58px" %)**1byte**|(% style="width:127px" %)**4bytes**|(% style="width:124px" %)**4bytes**|(% style="width:114px" %)**1byte**
526 -|(% 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.**
527 527  
528 -(((
529 -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.
530 -)))
554 +[[image:image-20231207160343-10.png||height="665" width="705"]]
531 531  
532 -(((
533 -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"]]
534 -)))
535 535  
536 -(((
537 -Is to check 2021/11/12 12:00:00 to 2021/11/12 15:00:00's data
538 -)))
557 +After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
539 539  
540 -(((
541 -Uplink Internal =5s，means DS20L will send one packet every 5s. range 5~~255s.
542 -)))
559 +[[image:image-20231129100454-2.png||height="501" width="928"]]
543 543  
544 544  
545 545  == 2.6 Frequency Plans ==
... ... @@ -550,7 +550,7 @@
550 550  [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]
551 551  
552 552  
553 -3. Configure DS20L
570 += 3. Configure DS20L =
554 554  
555 555  == 3.1 Configure Methods ==
556 556  
... ... @@ -580,7 +580,7 @@
580 580  == 3.3 Commands special design for DS20L ==
581 581  
582 582  
583 -These commands only valid for DS20L, as below:
600 +Below commands only valid for DS20L, as below:
584 584  
585 585  
586 586  === 3.3.1 Set Transmit Interval Time ===
... ... @@ -622,7 +622,7 @@
622 622  Example 1: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
623 623  )))
624 624  * (((
625 -Example 2: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds 
642 +Example 2: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
626 626  
627 627  
628 628  
... ... @@ -645,7 +645,7 @@
645 645  the mode is 0 =Disable Interrupt
646 646  )))
647 647  |(% style="width:154px" %)(((
648 -AT+INTMOD=2
665 +AT+INTMOD=3
649 649  
650 650  (default)
651 651  )))|(% style="width:196px" %)(((
... ... @@ -666,6 +666,117 @@
666 666  
667 667  * Example 2: Downlink Payload: 06000003  ~/~/  Set the interrupt mode to rising edge trigger
668 668  
686 +=== 3.3.3 Set work mode ===
687 +
688 +
689 +Feature: Switch working mode
690 +
691 +(% style="color:blue" %)**AT Command: AT+MOD**
692 +
693 +(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
694 +|=(% 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**
695 +|(% style="width:162px" %)AT+MOD=?|(% style="width:191px" %)Get the current working mode.|(% style="width:106px" %)OK
696 +|(% style="width:162px" %)AT+MOD=1|(% style="width:191px" %)Set the working mode to Regular measurements.|(% style="width:106px" %)(((
697 +OK
698 +Attention:Take effect after ATZ
699 +)))
700 +
701 +(% style="color:blue" %)**Downlink Command:**
702 +
703 +* **Example: **0x0A01 ~/~/  Same as AT+MOD=1
704 +
705 +* **Example:** 0x0A02  ~/~/  Same as AT+MOD=2
706 +
707 +=== 3.3.4 Set threshold and threshold mode ===
708 +
709 +
710 +Feature, Set threshold and threshold mode
711 +
712 +When (% style="color:#037691" %)**AT+DOL=0,0,0,0,400**(%%) is set, No threshold is used, the sampling time is 400ms.
713 +
714 +(% style="color:blue" %)**AT Command: AT+DOL**
715 +
716 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
717 +|(% 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**
718 +|(% style="width:172px" %)AT+ DOL =?|(% style="width:279px" %)Get the current threshold mode and sampling time|(% style="width:118px" %)(((
719 +0,0,0,0,400
720 +OK
721 +)))
722 +|(% style="width:172px" %)AT+ DOL =1,1800,100,0,400|(% style="width:279px" %)Set only the upper and lower thresholds|(% style="width:118px" %)OK
723 +
724 +(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
725 +|=(% 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
726 +|(% rowspan="11" style="color:blue; width:120px" %)(((
727 +
728 +
729 +
730 +
731 +
732 +
733 +
734 +
735 +
736 +
737 +
738 +**AT+DOL=1,1800,3,0,400**
739 +)))|(% rowspan="4" style="width:240px" %)(((
740 +
741 +
742 +
743 +
744 +The first bit sets the limit mode
745 +)))|(% style="width:150px" %)0: Do not use upper and lower limits
746 +|(% style="width:251px" %)1: Use upper and lower limits
747 +|(% style="width:251px" %)2:Less than the upper limit
748 +|(% style="width:251px" %)3: Greater than the lower limit
749 +|(% style="width:226px" %)The second bit sets the upper limit value|(% style="width:251px" %)3~~2000MM
750 +|(% style="width:226px" %)The third bit sets the lower limit value|(% style="width:251px" %)3~~2000MM
751 +|(% 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
752 +|(% style="width:251px" %)1 Person or object counting statistics
753 +|(% style="width:226px" %)The fifth bit sets the sampling time|(% style="width:251px" %)(((
754 +100~~10000ms
755 +
756 +
757 +)))
758 +
759 +(% style="color:blue" %)**Downlink Command: 0x07**
760 +
761 +Format: Command Code (0x07) followed by 9 bytes.
762 +
763 +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.
764 +
765 +* Example 0: Downlink Payload: 07 00 0000 0000 00 0190  **~-~-->**  AT+MOD=0,0,0,0,400
766 +
767 +* Example 1: Downlink Payload: 070107080064000190  **~-~-->**  AT+MOD=1,1800,100,0,400
768 +
769 +* Example 2: Downlink Payload: 070200000064000190  **~-~-->**  AT+MOD=2,1800,100,0,400
770 +
771 +* Example 3: Downlink Payload: 070300000064000190  **~-~-->**  AT+MOD=3,0,100,0,400
772 +
773 +(% style="color:Red" %)**Note: The over-limit alarm is applied to MOD1 and MOD2.**
774 +
775 +**For example:**
776 +
777 +* **AT+MOD=1**
778 +
779 + **AT+DOL=1,500,244,**(% style="color:blue" %)0(%%)**,300**
780 +
781 +Send data according to the normal TDC time. If the mode limit is exceeded, the alarm flag is set to 1:
782 +
783 +[[image:image-20231211113204-2.png||height="292" width="1093"]]
784 +
785 +* **AT+MOD=2  **
786 +
787 + **AT+DOL=1,500,244,**(% style="color:blue" %)0(%%)**,300**
788 +
789 +If the mode limit is exceeded, the data is immediately uplink and the alarm flag is set to 1:
790 +
791 +[[image:image-20231211114932-3.png||height="277" width="1248"]]
792 +
793 +
794 +
795 +
796 +
669 669  = 4. Battery & Power Consumption =
670 670  
671 671  
... ... @@ -702,6 +702,33 @@
702 702  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"]]
703 703  
704 704  
833 +== 6.2 DS20L programming line ==
834 +
835 +
836 +缺图 后续补上
837 +
838 +feature:
839 +
840 +for AT commands
841 +
842 +Update the firmware of DS20L
843 +
844 +Support interrupt mode
845 +
846 +
847 +== 6.3 LiDAR probe position ==
848 +
849 +
850 +[[image:1701155390576-216.png||height="285" width="307"]]
851 +
852 +The black oval hole in the picture is the LiDAR probe.
853 +
854 +
855 +== 6.4 Interface definition ==
856 +
857 +[[image:image-20231128151132-2.png||height="305" width="557"]]
858 +
859 +
705 705  = 7. Trouble Shooting =
706 706  
707 707  == 7.1 AT Command input doesn't work ==
1701149922873-259.png
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