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IWR6843: clarification between frames and subFrames

Danh Pham
Intellectual 295 points
Part Number: IWR6843

Hello,

I am currently working on reading data frame by frame from the sensor, however, the concept of Frame and SubFrame is confusing me.

To my understanding, a Frame consists of many subFrames, and to fully get data of a frame, I'll have to read from all the subFrames within a Frame.

If my understanding is correct, how do we know which subFrame belongs to which Frame? And if I am mistaken, please kindly help me with the correct explanation of frames and subFrames, and how to efficiently read data of a frame.

Thank you very much,

Danh Pham

  • 0
    TI__Expert 7510 points

    Danh:

    Can you please confirm if you are trying to take out processed point cloud data or raw ADC data. ?

    Best regards,

    Connor Desmond

  • 0 in reply to Connor Desmond
    Intellectual 295 points

    Hi, I am trying to extract processed point cloud data frame by frame.

    Thank you

  • +1 in reply to Danh Pham
    TI__Expert 7510 points

    Danh:

    When specifying the number of sub-frames within an advanced frame or any other parameters related to sub-frames, this is used to configure the RF front end of the device. Theese configurations will effect the structure of the ADC data that is fed to the SDK processing chain. From your perspective you just need to capture a frame of processed or point cloud data. This is demonstrated with our parser example located here:

    C:\ti\mmwave_sdk_03_05_00_04\packages\ti\demo\parser_scripts

    Configuring your chirps or a set of chirps within a subframe or subframes within an advanced subframe will effect the data that is fed into the SDK processing chain and thus effect the point cloud output indirectly. From a data reading perspective you don't need to take that structure into account.

    Best regards,

    Connor Desmond