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Last modified by Mengting Qiu on 2024/09/05 17:35
From version 136.1
edited by Mengting Qiu
on 2024/03/16 15:10
Change comment: Uploaded new attachment "image-20240316151014-2.png", version {1}
To version 137.2
edited by Xiaoling
on 2024/03/18 15:23
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747 747  0xA6 02 00 00 32  ==>  AT+SETCNT=2,50
748 748  
749 749  
750 +== 2.14 Clock logging (Since firmware version v1.2.1) ==
751 +
752 +
753 +Sometimes when we deploy lots of end nodes in field. We want all sensors sample data at the same time, and upload these data together for analyze. In such case, we can use clock loging feature.
754 +
755 +We can use this command to set the start time of data recording and the time interval to meet the requirements of the specific collection time of data.
756 +
757 +* (% style="color:blue" %)**AT Command: AT+CLOCKLOG=a,b,c,d**
758 +
759 +(% style="color:blue" %)**a:**(%%)** 0:** Disable Clock logging.  ** 1: **Enable Clock Logging
760 +
761 +(% style="color:blue" %)**b:**(%%)** **Specify First sampling start second: range **(0 ~~ 3599, 65535)   ** ~/~/ (% style="color:red" %)**Note:**(%%)** **If parameter b is set to 65535, the log period starts after the node accesses the network and sends packets.
762 +
763 +(% style="color:blue" %)**c:**(%%)** **Specify the sampling interval: range **(0 ~~ 255 minutes)**
764 +
765 +(% style="color:blue" %)**d:**(%%)** **How many entries should be uplink on every TDC **(max 32)**
766 +
767 +[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/SPH01-NB_NB-IoT_Soil_pH_Sensor_User_Manual/WebHome/image-20240315141254-1.png?rev=1.1||alt="image-20240315141254-1.png"]]
768 +
769 +**Example:**
770 +
771 +**AT+CLOCKLOG=1,65535,1,5**
772 +
773 +After the node sends the first packet, data is recorded to the memory at intervals of 1 minute. For each TDC uplink, the uplink load will include: battery information + the last 5 memory records (payload + timestamp).
774 +
775 +(% class="wikigeneratedid" %)
776 +[[image:image-20240316150911-1.png||height="493" width="1144"]]
777 +
778 +(% class="wikigeneratedid" %)
779 +(% style="color:red" %)**Note: Users need to synchronize the server time before configuring this command. If the server time is not synchronized before this command is configured, the command takes effect only after the node is reset.**
780 +
781 +
782 +== 2.8 Example Query saved historical records ==
783 +
784 +
785 +* (% style="color:blue" %)**AT Command: AT+CDP**
786 +
787 +This command can be used to search the saved history, recording up to 32 groups of data, each group of historical data contains a maximum of 100 bytes.
788 +
789 +(% class="wikigeneratedid" %)
790 +[[image:image-20240316151014-2.png||height="632" width="825"]]
791 +
792 +
750 750  = 3. Configure DS03A-NB =
751 751  
752 752  == 3.1 Configure Methods ==