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Last modified by Mengting Qiu on 2025/07/08 11:11
From version 195.1
edited by Dilisi S
on 2025/05/19 18:07
Change comment: May 19 edits - part 3
To version 196.1
edited by Dilisi S
on 2025/05/25 17:03
Change comment: May 25 edits - part 1

Summary

Details

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Content
... ... @@ -369,45 +369,57 @@
369 369  
370 370  Check the battery voltage for LDS25-LB/LS.
371 371  
372 -Ex1: 0x0C72 = 3186mV
372 +* Example 1: 0x0C72 = 3186mV
373 373  
374 -Ex2: 0x0B49 = 2889mV
374 +//More examples~://
375 375  
376 +* Example 2: 0x0B49 = 2889mV
376 376  
378 +
377 377  (% class="wikigeneratedid" id="HDS18B20Temperaturesensor" %)
378 378  (% style="color:blue" %)**DS18B20 Temperature sensor:**
379 379  
380 -This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
382 +This is an optional 2 bytes field. You can connect an external DS18B20 sensor to the +3.3V, 1-Wire, and GND pins. This field will then report the temperature.
381 381  
382 382  **Example**:
383 383  
384 -If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
386 +* If the payload is 0105H:
385 385  
386 -If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
388 + (0105H & FC00H == 0), therefore
389 + temp = 0105H / 10 = 26.1°C
387 387  
391 +* If the payload is FF3FH:
388 388  
393 + (FF3FH & FC00H != 0), therefore
394 + temp = (FF3FH - 65536) / 10 = -19.3°C
395 +
396 +
389 389  (% class="wikigeneratedid" id="HDistance" %)
390 390  (% style="color:blue" %)**Distance:**
391 391  
392 -Represents the distance value of the measurement output, the default unit is cm, and the value range parsed as a decimal number is 0-2500. In actual use, when the signal strength value Strength.
400 +Represents the measured distance value. The default unit is centimeters (cm), and the value range (parsed as a decimal number) is 0 to 2500. In actual use, the measurement may be affected by the signal strength value (**Strength**).
393 393  
394 394  **Example**:
395 395  
396 -If the data you get from the register is 0x0B 0xEA, the distance between the sensor and the measured object is 0E38(H) = 3640 (D)/10 = 364.0cm.
404 +* If the data read from the register is 0x0B 0xEA, then the distance between the sensor and the measured object is:
397 397  
406 +0x0BEA (hex) = 3050 (decimal) / 10 = 305.0 cm
398 398  
408 +
399 399  (% class="wikigeneratedid" id="HDistancesignalstrength" %)
400 400  (% style="color:blue" %)**Distance signal strength**(%%):
401 401  
402 -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.
412 +This refers to the signal strength of the distance measurement. The default output value ranges from 0 to 65,535. When the measurement gear is fixed, the farther the target is, the lower the signal strength. Similarly, a target with lower reflectivity will also result in a lower signal strength. When the **Strength** value is greater than 100 and not equal to 65,535, the measured **Distance** value is considered reliable.
403 403  
404 404  **Example**:
405 405  
406 -If payload is: 016C(H)=364(D), distance signal strength=364, 364>100,364≠65535, the measured value of Dist is considered credible.
416 +* If the payload is 016C(H) = 364 (decimal), then the distance signal strength is 364.
407 407  
408 -Customers can judge whether they need to adjust the environment based on the signal strength.
418 +Since 364 > 100 and 364 ≠ 65,535, the measured **Distance** value is considered reliable.
409 409  
420 +Customers can use the signal strength value to determine whether the environment needs to be adjusted.
410 410  
422 +
411 411  **1) When the sensor detects valid data:**
412 412  
413 413  [[image:image-20241008145038-1.png||height="180" width="1372"]]
... ... @@ -426,32 +426,32 @@
426 426  (% class="wikigeneratedid" id="HInterruptPin26A0InterruptLevel" %)
427 427  (% style="color:blue" %)**Interrupt Pin & Interrupt Level:**
428 428  
429 -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.
441 +This data field indicates whether the packet was generated by an interrupt. [[Click here>>||anchor="H3.3.2SetInterruptMode"]] for details on the hardware and software setup.
430 430  
431 -Note: The Internet Pin is a separate pin in the screw terminal. See [[pin mapping>>||anchor="H1.8PinDefinitions"]] of GPIO_EXTI .
443 +**Note**: The **Interrupt Pin** is a dedicated pin on the screw terminal. See the GPIO_EXTI [[pin mapping>>||anchor="H1.8PinDefinitions"]] for reference.
432 432  
433 433  **Example:**
434 434  
435 -If byte[0]&0x01=0x00 : Normal uplink packet.
447 +* If byte[0] & 0x01 = 0x00: Normal uplink packet
448 +* If byte[0] & 0x01 = 0x01: Interrupt-generated uplink packet
436 436  
437 -If byte[0]&0x01=0x01 : Interrupt Uplink Packet.
438 438  
439 -
440 440  (% class="wikigeneratedid" id="HLiDARtemp" %)
441 441  (% style="color:blue" %)**LiDAR temp:**
442 442  
443 -Characterize the internal temperature value of the sensor.
454 +Represents the internal temperature of the sensor.
444 444  
445 445  **Example: **
446 -If payload is: 1C(H) <<24>>24=26(D),LiDAR temp=26℃.
447 -If payload is: F2(H) <<24>>24=-14(D),LiDAR temp=-14℃.
448 448  
458 +* If the payload is 1C(H), then ((1C << 24) >> 24) = 26 (decimal), so **LiDAR temp = 26 °C**
459 +* If the payload is F2(H), then ((F2 << 24) >> 24) = -14 (decimal), so **LiDAR temp = -14 °C**
449 449  
461 +
450 450  (% class="wikigeneratedid" id="HMessageType" %)
451 451  (% style="color:blue" %)**Message Type:**
452 452  
453 453  (((
454 -For a normal uplink payload, the message type is always 0x01.
466 +For a normal uplink payload, the message type is always set to 0x01.
455 455  )))
456 456  
457 457  (((
... ... @@ -466,12 +466,12 @@
466 466  [[image:image-20241008150027-2.png||height="284" width="1450"]]
467 467  
468 468  
469 -=== 2.3.3 Historical measuring distance, FPORT~=3 ===
481 +=== 2.3.3 Historical measuring distances, FPort~=3 ===
470 470  
471 471  
472 -LDS25-LB/LS stores sensor values and users can retrieve these history values via the [[downlink command>>||anchor="H2.5.4Pollsensorvalue"]].
484 +LDS25-LB/LS stores sensor values, and you can retrieve these historical values via a [[downlink command>>||anchor="H2.5.4Pollsensorvalue"]].
473 473  
474 -The historical payload includes one or multiplies entries and every entry has the same payload as Real-Time measuring distance.
486 +The historical payload includes one or multiple entries, and each entry has the same format as the real-time distance measurement payload.
475 475  
476 476  (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
477 477  |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
... ... @@ -493,23 +493,20 @@
493 493  Interrupt flag
494 494  )))
495 495  
496 -* (((
497 -Each data entry is 11 bytes and has the same structure as [[Uplink Payload>>||anchor="H2.3.2UplinkPayload2CFPORT3D2"]], to save airtime and battery, LDS25-LB/LS will send max bytes according to the current DR and Frequency bands.
508 +(((
509 +* Each data entry is 11 bytes and follows the same structure as the [[Uplink Payload>>||anchor="H2.3.2UplinkPayload2CFPORT3D2"]]. To save airtime and battery, the LDS25-LB/LS will send the maximum number of bytes allowed based on the current data rate (DR) and frequency band.
498 498  )))
499 499  
500 -For example, in the US915 band, the max payload for different DR is:
512 +For example, in the US915 band, the maximum payload size for different data rates (DR) is as follows:
501 501  
502 -**a) DR0:** max is 11 bytes so one entry of data
514 +a) **DR0:** Maximum is 11 bytes, so one data entry is sent.
515 +b) **DR1:** Maximum is 53 bytes, so the device uploads 4 data entries (total 44 bytes).
516 +c) **DR2:** The total payload includes 11 data entries.
517 +d) **DR3:** The total payload includes 22 data entries.
503 503  
504 -**b) DR1:** max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
519 +If the LDS25-LB/LS has no data available during the polling time, it will uplink 11 bytes of zero.
505 505  
506 -**c) DR2:** total payload includes 11 entries of data
507 507  
508 -**d) DR3:** total payload includes 22 entries of data.
509 -
510 -If LDS25-LB/LS doesn't have any data in the polling time. It will uplink 11 bytes of 0
511 -
512 -
513 513  **Downlink:**
514 514  
515 515  0x31 67 05 E4 CC 67 05 EA A8 05