Skip to Content

Changes for page DMT01

Last modified by Xiaoling on 2025/08/15 17:26
From version 49.1
edited by Mengting Qiu
on 2025/08/04 18:13
Change comment: There is no comment for this version
To version 55.2
edited by Mengting Qiu
on 2025/08/05 08:36
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -189,21 +189,6 @@
189 189  )))
190 190  
191 191  
192 -== 2.2  How it works? ==
193 -
194 -(((
195 -(((
196 -
197 -)))
198 -
199 -The DMT01 is configured as (% style="color:#037691" %)**LoRaWAN OTAA Class A**(%%) mode by default. It has OTAA keys to join LoRaWAN network. To connect a local LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and press the button to activate the DMT01. It will automatically join the network via OTAA and start to send the sensor value.
200 -
201 -(((
202 -On each uplink, DMT01 will get the temperature from the sensor and send it to the server.
203 -)))
204 -)))
205 -
206 -
207 207  == 2.3 ​Quick guide to connect to LoRaWAN server (OTAA) ==
208 208  
209 209  
... ... @@ -350,8 +350,7 @@
350 350  
351 351  
352 352  
353 -(% class="wikigeneratedid" id="HUnittimestamp" %)
354 -(% style="color:#4472c4" %)**Unit timestamp**
338 +==== (% style="color:#4472c4" %)**Unit timestamp**(%%) ====
355 355  
356 356  Unit TimeStamp Example: 689085D7(H) = 1754301911(D)
357 357  
... ... @@ -358,10 +358,9 @@
358 358  Put the decimal value into this link([[https:~~/~~/www.epochconverter.com)>>https://www.epochconverter.com]])to get the time.
359 359  
360 360  
361 -(% class="wikigeneratedid" id="HDevMode" %)
362 -(% style="color:#4472c4" %)**DevMode**
345 +==== (% style="color:#4472c4" %)**DevMode**(%%) ====
363 363  
364 -Example：
347 +**Example**：
365 365  
366 366  If payload is 0x01: BLE_LoRa
367 367  
... ... @@ -370,71 +370,143 @@
370 370  If payload is 0x03: BLE
371 371  
372 372  
373 -(% class="wikigeneratedid" id="HMACaddr" %)
374 -(% style="color:#4472c4" %)**MACaddr**
356 +==== (% style="color:#4472c4" %)**MACaddr**(%%) ====
375 375  
376 -Example:
358 +**Example**:
377 377  
378 378  If the payload is C12309250F1A, the MACaddr is C12309250F1A
379 379  
380 380  
381 -(% class="wikigeneratedid" id="HProbeBat" %)
382 -(% style="color:#4472c4" %)**ProbeBat**
363 +==== (% style="color:#4472c4" %)**ProbeBat**(%%) ====
383 383  
384 384  **Example:**
385 385  
386 -If payload & 0x01 = 0x01  **~-~->** This is an Alarm Message.It means that the temperature and humidity exceed the alarm value or trigger an interrupt.
367 +If payload is 0x64 = 100%
387 387  
388 -If payload & 0x01 = 0x00  **~-~->** This is a normal uplink message, no alarm.
389 389  
390 -If payload & 0x80>>7 = 0x01  **~-~->** The PA8 is low level.
370 +==== (% style="color:#4472c4" %)**BoxBat**(%%) ====
391 391  
392 -If payload & 0x80>>7 =0x00  **~-~->** The PA8 is high level.
372 +**Example:**
393 393  
394 -If payload >> 2 = 0x00  **~-~->**  means MOD=1, This is a sampling uplink message.
374 +If payload is 0x46 = 70%
395 395  
396 -If payload >> 2 = 0x31  **~-~->**  means MOD=31, this message is a reply message for polling, this message contains the alarm settings. see [[this link>>path:#HPolltheAlarmsettings:]] for detail.
397 397  
377 +==== (% style="color:#4472c4" %)**Food temperature**(%%) ====
398 398  
399 -(% class="wikigeneratedid" id="HBoxBat" %)
400 -(% style="color:#4472c4" %)**BoxBat**
379 +Because the food temperature data is a little-endian sequence, the order of the front and back bytes needs to be swapped during decoding.
401 401  
402 -Sensor Battery Level.
381 +**Example**:
403 403  
404 -Ex1: 0x0B45 = 2885mV
383 +If payload is: D300H = 00D3H, temp = 00D3H /10 = 21.1 degree
405 405  
406 -Ex2: 0x0B49 = 2889mV
385 +If payload is: 3FFFH  = FF3F , temp = (FF3FH - 65536)/10 = -19.3 degrees.
407 407  
408 408  
409 -(% style="color:#4472c4" %)**Food temperature**
388 +==== (% style="color:#4472c4" %)**Ambient temperature**(%%) ====
410 410  
390 +Because the food temperature data is a little-endian sequence, the order of the front and back bytes needs to be swapped during decoding.
391 +
411 411  **Example**:
412 412  
413 -If payload is: 0105H:  (0105 & 8000 == 0), temp = 0105H /10 = 26.1 degree
394 +If payload is: D200H = 00D2H, temp = 00D2H /10 = 21.0 degree
414 414  
415 -If payload is: FF3FH :  (FF3F & 8000 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
396 +If payload is: 3FFFH  = FF3F , temp = (FF3FH - 65536)/10 = -19.3 degrees.
416 416  
417 -(FF3F & 8000:Judge whether the highest bit is 1, when the highest bit is 1, it is negative)
418 418  
419 419  
420 -(% style="color:#4472c4" %)**Ambient temperature**
400 +== 2.4 Bluetoothe Broadcast Payload ==
421 421  
402 +=== 2.4.1 How to use the scanning tool ===
403 +
404 +
405 +
406 +
407 +=== 2.4.2 Data Analysis ===
408 +
409 +Scan and obtain DMT01 device broadcast data through a third-party mobile phone app (such as nRF Connect)
410 +
411 +Example：
412 +
413 +Note: The following data is obtained through the **nRF Connect tool**.
414 +
415 +[[image:1754305290140-806.jpg||height="680" width="432"]]
416 +
417 +
418 +If the scanned payload is 0x0201060609444D5430310EFF  **01C12309250F1AD100CD006446   **0512E001E001
419 +
420 +(% style="color:red" %)**Note**(%%)：
421 +
422 +* The first 12 bytes in the payload are the Bluetooth packet header data and do not need to be decoded.
423 +* The last 6 bytes in the payload are the Bluetooth packet trailer data and do not need to be decoded.
424 +
425 +So the payload is：**01C12309250F1AD100CD006446**
426 +
427 +
428 +==== (% style="color:#4472c4" %)**Bluetooth data packet frame header**(%%) ====
429 +
430 +Example: 0x0201060609444D5430310EFF
431 +
432 +
433 +==== (% style="color:#4472c4" %)**DevMode**(%%) ====
434 +
435 +**Example**：
436 +
437 +If payload is 0x01: BLE_LoRa
438 +
439 +If payload is 0x02: LoRa
440 +
441 +If payload is 0x03: BLE
442 +
443 +
444 +==== (% style="color:#4472c4" %)**MACaddr**(%%) ====
445 +
422 422  **Example**:
423 423  
424 -If payload is: 0105H:  (0105 & 8000 == 0), temp = 0105H /10 = 26.1 degree
448 +If the payload is C12309250F1A, the MACaddr is C12309250F1A
425 425  
426 -If payload is: FF3FH :  (FF3F & 8000 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
427 427  
428 -(FF3F & 8000:Judge whether the highest bit is 1, when the highest bit is 1, it is negative)
451 +==== (% style="color:#4472c4" %)**ProbeBat**(%%) ====
429 429  
453 +**Example:**
430 430  
455 +If payload is 0x64 = 100%
431 431  
432 -== 2.4 Bluetoothe Broadcast Payload ==
433 433  
458 +==== (% style="color:#4472c4" %)**BoxBat**(%%) ====
434 434  
460 +**Example:**
435 435  
462 +If payload is 0x46 = 70%
436 436  
437 437  
465 +==== (% style="color:#4472c4" %)**Food temperature**(%%) ====
466 +
467 +Because the food temperature data is a little-endian sequence, the order of the front and back bytes needs to be swapped during decoding.
468 +
469 +**Example**:
470 +
471 +If payload is: D300H = 00D3H, temp = 00D3H /10 = 21.1 degree
472 +
473 +If payload is: 3FFFH  = FF3F , temp = (FF3FH - 65536)/10 = -19.3 degrees.
474 +
475 +
476 +==== (% style="color:#4472c4" %)**Ambient temperature**(%%) ====
477 +
478 +Because the food temperature data is a little-endian sequence, the order of the front and back bytes needs to be swapped during decoding.
479 +
480 +**Example**:
481 +
482 +If payload is: D200H = 00D2H, temp = 00D2H /10 = 21.0 degree
483 +
484 +If payload is: 3FFFH  = FF3F , temp = (FF3FH - 65536)/10 = -19.3 degrees.
485 +
486 +
487 +==== (% style="color:#4472c4" %)**Bluetooth data packet frame tail**(%%) ====
488 +
489 +Example: 0x0512E001E001
490 +
491 +
492 +
438 438  = 3. Configure DMT01  ~-~- 需要修改 =
439 439  
440 440  == 3.1 Configure Methods ==
1754305091443-355.jpg
Author
... ... @@ -1,0 +1,1 @@
1 +XWiki.ting
Size
... ... @@ -1,0 +1,1 @@
1 +408.8 KB
Content
1754305290140-806.jpg
Author
... ... @@ -1,0 +1,1 @@
1 +XWiki.ting
Size
... ... @@ -1,0 +1,1 @@
1 +133.1 KB
Content