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AWR2243: IdleTimeVar variable in chirp profile causing issue in Cascade Radar

vishnu vikash
Intellectual 355 points
Part Number: AWR2243
Other Parts Discussed in Thread: IWR6843, AWR1243,

Hi 

1. When I configure idleTimeVar variable in chirp profile. I am not getting proper output in the cascade radar and below I have attached the Matlab plot for reference.

Below is the configuration which I used for my experiment:

profileCfg 0    77  5   6   40   0   0   79 1   256  8000   0   0   30

chirpCfg 0 0 0 0 0 1 0 1

frameCfg 0 0 64 0 100 1 0

2. I have also tried a similar experiment in IWR6843 ODS and its works fine even after configuring idleTimeVar variable in chirp profile. Facing issue only with cascade radar.  May I know why?

3. Can you please help me in resolving this issue?

  • 0
    TI__Guru*** 148974 points

    Hi,

    What type of SW are you using to configure the cascade radar? Have you modified the matlab scripts provided?

    thank you
    Cesar

  • 0 in reply to Cesar
    Intellectual 355 points

    Hi

    1.What type of SW are you using to configure the cascade radar? 

    I have used Sensing Estimator to generate the configuration for the cascade radar.

    2. Have you modified the Matlab scripts provided?

    Yes, I have written a Matlab script to analyze the raw ADC data output of cascade radar. I have used the same piece of Matlab code to analyze the data with idleTimeVar = 0  in the chirp profile is giving proper output as below.


     

    when I configure idleTimeVar variable in the chirp profile. I am facing an issue Only In the cascade radar.  

    Please help me in resolving this issue.

  • 0 in reply to vishnu vikash
    TI__Guru*** 148974 points

    Hi,

    Sorry for this question again, but I am not clear how you configured the Cascade setup.

    The demos provided are based on Matlab configuration provided in scripts below. Did you modify these scripts.

    C:\ti\mmwave_studio_03_00_00_14\mmWaveStudio\MatlabExamples

    As you probably know there is no SDK for the cascade setup. This is different from the IWR6843

    Thank you
    Cesar

  • 0 in reply to Cesar
    Intellectual 355 points

    Hi,

    1. We have not used  mmwave_studio for my experiment. I have used only PROCESSOR_SDK_RADAR_03_08_00_00 to build & run my use-case.

    2. We have set all my necessary parameters in chains_common_cascade_ar12xx_config_mimo.c file and I have configured the cascade setup by running object detection use-case.

    3. We have used CCS and JTAG to dump the raw ADC data for post-analysis.

    4. We have created our own Matlab scripts based on the provided ones. We have modified them to adapt to our data and plot 2d FFT. "we do not suspect the Matlab because we are getting the correct plot even in cascade board when idleTimeVar is not set".

    Thank You

    Vishnu

  • 0 in reply to vishnu vikash
    TI__Guru*** 148974 points

    Thank you for the clarification.

    I understand now your environment.

    The cascade demo that uses Processor SDK is today supported by the forum. The team that developed the demo is no longer available.

    Initially the demo was developed for Processor SDK 03.07 for awr1243.

    There is a patch provided by members of the forum to port this demo to SDK 3.08 and awr2243 on the mmWave FAQ.

    I will leave this thread open for additional input from forum members

    Thank you

    Cesar

  • 0 in reply to Cesar
    Intellectual 355 points

    Hi

    We have found the bug in our configuration and fixed it. Now it is working fine.

    The bug was we missed setting the ideal time var properly in the chirp cfg for one of the sensors.

    Thanks for your support

    Thanks & Regards

    Vishnu