Changes for page wiki_test
Last modified by Mengting Qiu on 2024/09/05 17:35
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... ... @@ -396,7 +396,7 @@ 396 396 397 397 These bytes include the hardware and software version. 398 398 399 -(% style="color:#037691" %)**Higher byte:**(%%) Specify Sensor Model: 0x00 for DDS20-NB399 +(% style="color:#037691" %)**Higher byte:**(%%) Specify Sensor Model: 0x00 for S31B-NB & S31-NB 400 400 401 401 (% style="color:#037691" %)**Lower byte:**(%%) Specify the software version: 0x64=100, means firmware version 100 402 402 ... ... @@ -423,6 +423,20 @@ 423 423 **99** Not known or not detectable 424 424 425 425 426 +(% style="color:blue" %)**Temperature: ** 427 + 428 +If payload is: 0105H: (0105 & 8000 == 0), temp = 0105H /10 = 26.1 degree 429 + 430 +If payload is: FF3FH : (FF3F & 8000 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees. 431 + 432 +(FF3F & 8000: Judge whether the highest bit is 1, when the highest bit is 1, it is negative) 433 + 434 + 435 +(% style="color:blue" %)**Humidity: ** 436 + 437 +Read:0295(H)=661(D) Value: 661 / 10=66.1, So 66.1% 438 + 439 + 426 426 (% style="color:blue" %)**TimeStamp: ** 427 427 428 428 Unit TimeStamp Example: 64d49439(H) = 1691653177(D) ... ... @@ -465,7 +465,7 @@ 465 465 == 2.4 Multi-Samplings and One uplink == 466 466 467 467 468 -To save battery life, DDS20-NB will sample temperature & humidity data every 15 minutes and send one uplink every 2 hours. So each uplink it will include 8 stored data + 1 real-time data. They are defined by:482 +To save battery life, S31-NB will sample temperature & humidity data every 15 minutes and send one uplink every 2 hours. So each uplink it will include 8 stored data + 1 real-time data. They are defined by: 469 469 470 470 * (% style="color:#037691" %)**AT+TR=900** (%%) ~/~/ The unit is seconds, and the default is to record data once every 900 seconds (15 minutes, the minimum can be set to 180 seconds) 471 471