<
From version < 78.1 >
edited by Edwin Chen
on 2022/05/24 23:37
To version < 88.1 >
edited by Edwin Chen
on 2022/05/25 00:15
>
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401 401  
402 402  == 2.6 Datalog Feature ==
403 403  
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.
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.
405 405  
406 -=== 2.6.1 Unix TimeStamp ===
406 +=== 2.6.1 Ways to get datalog via LoRaWAN ===
407 407  
408 +There are two methods:
409 +
410 +1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]].
411 +1.
412 +
413 +=== 2.6.2 Unix TimeStamp ===
414 +
408 408  LHT65N uses Unix TimeStamp format based on
409 409  
410 410  [[image:image-20220523001219-11.png||height="97" width="627"]]
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422 422  
423 423  So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
424 424  
425 -=== 2.6.2 Set Device Time ===
432 +=== 2.6.3 Set Device Time ===
426 426  
427 427  (((
428 428  There are two ways to set device’s time:
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456 456  User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
457 457  )))
458 458  
459 -=== 2.6.3 Poll sensor value ===
466 +=== 2.6.4 Poll sensor value ===
460 460  
461 461  User can poll sensor value based on timestamps from the server. Below is the downlink command.
462 462  
... ... @@ -479,7 +479,7 @@
479 479  )))
480 480  
481 481  
482 -=== 2.6.4 Datalog Uplink payload ===
489 +=== 2.6.5 Datalog Uplink payload ===
483 483  
484 484  The Datalog poll reply uplink will use below payload format.
485 485  
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