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IWRL6432AOP: Ripple demo raw data for multiple rx and tx?

Range_Doppler
Prodigy 20 points
Part Number: IWRL6432AOP

Tool/software:

I am trying to read raw data over SPI from the ripple_demo for multiple RX and TX.
For 1 TX 1 RX i seem to get correct data but for multiple TX or multiple RX the data does not look correct.

Is there any modification needed to the ripple demo to support multiple TX and RX?

I don't have access to matlab so I have written my own data parser in python, so make sure I unpack the data correctly can you please tell me in what order is the raw data packaged when using eg. a 2tx 3rx chirp config?
Is it correct that CSL_APP_HWA_ADCBUF_RD_U_BASE contains samples from all RX in the form:

[rx0 s0][rx0 s1][rx0 s2][rx0 s3]...[rx0 sX][rx1 s0][rx1 s1][rx1 s2][rx1 s3]...[rx1 sX]...[rx3 sX][rx3 s0][rx3 s1][rx3 s2][rx3 s3]...[rx1 sX]


Is it correct that ripple_transferrawADCChirp() function is triggered once for each TX?

  • 0
    TI__Genius 9180 points

    Hi

    Thanks for your query. Please allow us a couple of days to respond.

    Regards

  • 0 in reply to Abhishek Karkisaval
    Prodigy 20 points

    Hi,

    Any update on this question?

  • 0 in reply to Range_Doppler
    TI__Mastermind 18107 points

    Hello,

    Your CSL_APP_HWA_ADCBUF_RD_U_BASE format you have listed seems to be correct, but I have some questions.

    1. Why do you want to do raw data over SPI with specifically the ripple demo, as opposed to the motion and presence demo that we provide a SPI Data Capture Tool and respective program? When doing raw data capture, the data is before any processing occurs and is purely the data dumped from the ADC buffer. What this means is that regardless of what demo you use, if the chirp design is the same then data you will receive will also be the same.

    2. The SPI Data Capture tool mentioned uses Python and not MATLAB, only the data parsing script to do FFTs uses MATLAB. Have you seen this tool? You can find it in the Radar Toolbox with respective documentation at <radar_toolbox>\tools\SPI_Data_Capture and <radar_toolbox>\source\ti\examples\Fundamentals\xWRL6432_Raw_Data_Over_SPI

    Best Regards,

    Pedrhom