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IWR6843:

Intellectual 420 points

Replies: 4

Views: 65

Part Number: IWR6843

1. I am using mmw demo for get RAW data base on LVDS
mmw is from, C:\ti\mmwave_sdk_03_03_00_03\packages\ti\demo\xwr68xx\mmw
IWR6843ISK + DCA1000

2. How does DCA1000 identify one frame? Does RawData in ADCBuf has header info?

3. I use "DCA1000EVM_CLI_Control.exe start_record datacard_config.json" to fetch data.
3.1 Does save file size is multiples N for each frame?
3.2 My json config is also below, and I get RAW data file, its size is
33,553,520, it is not 33,554,432(equals 32M)
What is the reason for it?

4. below is the file size(I have changed the RAW data file name), and json info.

  • 1,

  • Hello

    Please check the Data format for DCA1000 here, which can be used to interpret the file content.

    mmwave Radar Device ADC Raw Data Capture (Rev. )

    Thank you,

    Vaibhav

  • Hi, there:

    1)  You start DCA1000 data capture by sending command "DCA1000EVM_CLI_Control.exe start_record datacard_config.json").  

    You start sensor by sending sensorStart CLI command to radar.  

    It is suggested that you start DCA1000 data capture before you start sensor.  In this way, the captured data is aligned with frame start.   

    2) To control the capture size, you can change the captureStopMode to "bytes" instead of "infinite".  In this way, the capture will stop when the capture size reach the size defined in "bytesToCapture".   You can also keep the mode at "infinite", and then sending a stop_record command through DCA1000 CLI utility to stop the recording.

    You can find related information at :

    Refer to SDK User Guide, specifically the section entitled "mmWave demo with LVDS-based instrumentation"
    DCA1000EVM_CLI_Control.exe User Guide location: 
    C:\ti\mmwave_studio_<version_number>\mmWaveStudio\ReferenceCode\DCA1000\Docs
    DCA1000EVM_CLI_Control.exe source code location:C:\ti\mmwave_studio_<version_number>\mmWaveStudio\ReferenceCode\DCA1000\SourceCode

    Best,

    Zigang

  • In reply to zigang Yang:

    HI, Zigang

        Thank you reply on my question very much, I got the answer.

    Thanks

    PCD

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