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Original question:

AWR6843AOPEVM: A couple of questions from a novice :-)

AWR6843AOPEVM: Folloup questions

Ophir Sharon
Prodigy 30 points
Part Number: AWR6843AOPEVM

I installede everything needed, and followed the instructions for running the "Overhead Mount Vehicle Occupancy Detection" demo

I have encountered 2 problems:

1. When performing calibration, the line "bpmCfg -1 0 0 0" prevents the cfg file from loading. I can only load it when  this line is removed.  I am using SDK 3.6 both with FW and with the GUI installed.

Is that line essential for calibration?

Is there a way of checking my calibration is good?

2. When running the Overhead Mount Vehicle Occupancy Detection demo GUI, I see that frames are counting, but I do not see anything changes on the screen.all the plots are static, no matter if I move infront of the sensor.

  When I run the Out of box demo - the plot looked ok.

Any ideas what can cause this behaviour?

Thanks,

Ophir

  • 0
    TI__Genius 10550 points

    Hi, 

    Ophir Sharon said:
    1. When performing calibration, the line "bpmCfg -1 0 0 0" prevents the cfg file from loading. I can only load it when  this line is removed.  I am using SDK 3.6 both with FW and with the GUI installed.

    This can be removed from the configuration file. BTW are you using the configuration file associated with the demo? You may need to download the Automotive tool box to get these configuration files. They are located at ti\mmwave_automotive_toolbox_3_6_0\labs\incabinsensing\overhead_mount_occupancy\chirp_configs

    Ophir Sharon said:
    2. When running the Overhead Mount Vehicle Occupancy Detection demo GUI, I see that frames are counting, but I do not see anything changes on the screen.all the plots are static, no matter if I move infront of the sensor.

    Again this could be related to the profile config used. Profile config also defines the zones which is needed for allocating the point cloud information to the zones. 

    Regards, 

    Sudharshan K N 

  • 0 in reply to Sudharshan KN
    Prodigy 30 points

    I am using the configuration file that is placed in "ti\mmwave_automotive_toolbox_3_6_0\labs\incabinsensing\overhead_mount_occupancy\chirp_configs"

    The only thing I changed int he file is this line : 

    compRangeBiasAndRxChanPhase 0 0.9929 -0.1188 -0.9842 -0.1769 0.9994 0.0349 -0.9981 -0.0623 0.6777 -0.7353 -0.8517 0.5241 0.7782 -0.6280 -0.8004 0.5995 0.6842 -0.7293 -0.8495 0.5275 0.7969 -0.6041 -0.8090 0.5877

    I replaced it after perfoming calibration acording to the instructions found in the demo instructions here : dev.ti.com/.../node

    I did not change the XYZ values, since I did not yet install the module in a vehicle, but I am supposed to see something when I run the demo, assuming I am moving in front of the sensor, right? I do not see any change at all. Just the frames counting. What can be the resaon for this?

  • 0 in reply to Ophir Sharon
    TI__Genius 10550 points

    Hi Ophir, 

    Does it work without the calibration parameters? OR it doesn't work at all? The OOB demo will display any of the points reported. However, the overhead demo visualizer needs the XYZ mapping of the car so that it can indicate the zone where the points belong to. This could be the reason why you are not seeing the points. 

    Regards, 

    Sudharshan K N

  • 0 in reply to Sudharshan KN
    TI__Genius 10550 points

    Hi Ophir, 

    Any update on this tests? Pl let me know if the issue can be closed. 

    Regards, 

    Sudharshan K N 

  • 0 in reply to Sudharshan KN
    Prodigy 30 points

    Hi,

    I tried to run the demo using the original vfg files supplied with the demo (which means did not use the calibration parameters I got, but the defaule values), and the demo is working.

    I will investigate later what I did wrong in the calibration process, but for the time - the demo works good enough even with no calibration.

    Thank you for your help. 

    Ophir