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IWR6843AOPEVM: "Bandwidth [GHz]" information" in cfg file

matusan
Guru 10235 points
Part Number: IWR6843AOPEVM

Hello, TI Experts,

 

I'd like to know "Bandwidth [GHz]" of below ROS demo.

dev.ti.com/.../node

 

Question:

  - Could you tell us "Bandwidth [GHz]" of this ROS demo?

  - Are there "Bandwidth [GHz]" information in cfg file such as like below?

     C:\ti\mmwave_industrial_toolbox_4_5_1\labs\robotics\ros_driver\ti_mmwave_rospkg\6843AOP_3d.cfg

 

% ***************************************************************

% Created for SDK ver:03.02

% Created using Visualizer ver:3.2.0.0_AOP

% Frequency:60

% Platform:xWR68xx_AOP

% Scene Classifier:best_range_res

% Azimuth Resolution(deg):30 + 30

% Range Resolution(m):0.047

% Maximum unambiguous Range(m):9.02

% Maximum Radial Velocity(m/s):4.99

% Radial velocity resolution(m/s):0.63

% Frame Duration(msec):33.333

% Range Detection Threshold (dB):15

% Doppler Detection Threshold (dB):15

% Range Peak Grouping:enabled

% Doppler Peak Grouping:enabled

% Static clutter removal:disabled

% Angle of Arrival FoV: Full FoV

% Range FoV: Full FoV

% Doppler FoV: Full FoV

% ***************************************************************

sensorStop

flushCfg

dfeDataOutputMode 1

channelCfg 15 7 0

adcCfg 2 1

adcbufCfg -1 0 1 1 1

profileCfg 0 60 43 7 40 0 0 100 1 224 7000 0 0 30

chirpCfg 0 0 0 0 0 0 0 1

chirpCfg 1 1 0 0 0 0 0 2

chirpCfg 2 2 0 0 0 0 0 4

frameCfg 0 2 16 0 33.333 1 0

lowPower 0 0

guiMonitor -1 1 0 0 0 0 0

cfarCfg -1 0 2 8 4 3 0 15 1

cfarCfg -1 1 0 4 2 3 1 15 1

multiObjBeamForming -1 1 0.5

clutterRemoval -1 1

calibDcRangeSig -1 0 -5 8 256

extendedMaxVelocity -1 0

lvdsStreamCfg -1 0 0 0

compRangeBiasAndRxChanPhase 0.0 1 0 -1 0 1 0 -1 0 1 0 -1 0 1 0 -1 0 1 0 -1 0 1 0 -1 0

measureRangeBiasAndRxChanPhase 0 1.5 0.2

CQRxSatMonitor 0 3 4 99 0

CQSigImgMonitor 0 111 4

analogMonitor 0 0

aoaFovCfg -1 -90 90 -90 90

cfarFovCfg -1 0 0 8.40

cfarFovCfg -1 1 -5.02 5.02

sensorStart

 

Best regards,

  • 0
    TI__Mastermind 30820 points

    Hello,

    The bandwidth is calculated as the frequency slope * adc sample time. From profileCfg we see that frequency slope is set to 100MHz/us. ADC sample time is number of samples divided by sample rate. Again from profileCfg we see that number of samples is 224 and sample rate is 7000 ksps. Therefore, the ADC sample time is 32 usec. Finally, the bandwidth is 100 * 32 = 3200MHz.

    You can parse the Cfg commands yourself by viewing Table 1 in the mmWave SDK User Guide. I strongly suggest you view and understand this table before posting again. Thank you for your question.

  • 0 in reply to Sabeeh Khan1
    TI__Mastermind 30820 points

    Furthermore, if you need more information you can use the Out of box demo visualizer. You can see this information in the "Plots" tab and "Chirp/Frame" window.

  • 0
    Guru 10235 points

    Hi,

     

    Thank you very much for your kindness.

    I really appreciate your help.

    This information is very helpful!

     

    I also try to load below cfg File by clicking "LOAD CONFIG" on Visualizer tool to check "Chirp/Frame" of this cfg.

    C:\ti\mmwave_industrial_toolbox_4_5_1\labs\robotics\ros_driver\ti_mmwave_rospkg\6843AOP_3d.cfg

     

    But it seems to be Error like below;

     

     

    Question:

      Could you tell us how to load this "6843AOP_3d.cfg" on Visualizer tool?

     

    Best regards,

  • 0 in reply to matusan
    TI__Mastermind 30820 points

    Hello,

    The process seems to be correct. Are you sure you have selected SDK version 3.5 from the drop down menu?

    https://dev.ti.com/gallery/view/mmwave/mmWave_Demo_Visualizer/ver/3.5.0/

  • 0
    Guru 10235 points

    Hi,

     

    Thank you very much for your kindness.

    I really appreciate your help.

     

    YES!

    I can success to run OOB-demo selected SDK version 3.5 from the drop down menu like below;

     

     

    But we found error by loading below cfg File by clicking "LOAD CONFIG".

      C:\ti\mmwave_industrial_toolbox_4_5_1\labs\robotics\ros_driver\ti_mmwave_rospkg\6843AOP_3d.cfg

     

    We would appreciate if you check the behavior with 6843AOP_3d.cfg and IWR6843AOPEVM by clicking "LOAD CONFIG" on Visualizer tool.

     P.S. I'd like to share "clear screen-shot" as below pdf.

     

    Best regards,

    vis.pdf

  • +1 in reply to matusan
    TI__Mastermind 30820 points

    Thank you for sharing the images and the pdf.

    The error describes a missing command "calibData". You can add this command "calibData 0 0 0" just before "sensorStart" by editing the 6843AOP_3d.cfg file.

    I've tested the cfg file myself and did not see issues. Could you please post your cfg in its entirety so I may compare?

  • 0 in reply to Sabeeh Khan1
    Guru 10235 points

    Hi,

     

    Thank you very much for your kindness.

    I really appreciate your help.

     

    It seems to success to run the deme on visualizer with 6843AOP_3d.cfg from your advice.

    Thank you!

     

    Best regards,