<
From version < 85.1 >
edited by Edwin Chen
on 2022/05/25 00:00
To version < 78.1 >
edited by Edwin Chen
on 2022/05/24 23:37
>
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401 401  
402 402  == 2.6 Datalog Feature ==
403 403  
404 -Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, LHT65N will store the reading for future retrieving purposes. There are two ways for IoT servers to get datalog from LHT65N.
404 +This feature is always enabled. When user wants to retrieve the sensor value, he can send a poll command from the IoT platform to ask LHT65N to send the value in the required time slot.
405 405  
406 -=== 2.6.1 Ways to get datalog via LoRaWAN ===
406 +=== 2.6.1 Unix TimeStamp ===
407 407  
408 -There are two methods:
409 -
410 -1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>H2.6.4Pollsensorvalue]].
411 -1.
412 -
413 -=== 2.6.2 Unix TimeStamp ===
414 -
415 415  LHT65N uses Unix TimeStamp format based on
416 416  
417 417  [[image:image-20220523001219-11.png||height="97" width="627"]]
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429 429  
430 430  So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
431 431  
432 -=== 2.6.3 Set Device Time ===
425 +=== 2.6.2 Set Device Time ===
433 433  
434 434  (((
435 435  There are two ways to set device’s time:
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463 463  User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
464 464  )))
465 465  
466 -=== 2.6.4 Poll sensor value ===
459 +=== 2.6.3 Poll sensor value ===
467 467  
468 468  User can poll sensor value based on timestamps from the server. Below is the downlink command.
469 469  
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486 486  )))
487 487  
488 488  
489 -=== 2.6.5 Datalog Uplink payload ===
482 +=== 2.6.4 Datalog Uplink payload ===
490 490  
491 491  The Datalog poll reply uplink will use below payload format.
492 492  
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