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IWR6843ISK: 3D people conting demo: TLV Header Parsing Failure & Target TLV parse failed

Aleena N A
Intellectual 530 points
Part Number: IWR6843ISK

Hello,

I am working on 3D people counting demo. While running the python visualizer I frequently get the warning,

Point Cloud TLV Parser Failed
TLV Header Parsing Failure
Target TLV parse failed

I couldn't figure out what is the reason? Please help me. I have been struggling with this error so many times. 

Thanks in advance.

thanks and regards,

Aleena N A

  • 0
    TI__Genius 14415 points

    Hi Aleena,

    How often does this happen? Is it occasional frames or every frame? Do you see missed frames in the data because of this? In general, this will happen when the python gui does not receive a complete frame or TLV of data, or some of the data is incorrect. This can occur if the gui thread gets slightly out of sync with the sensor, or if the GUI processing takes longer than 1 frame. 

    You can see in the code where these messages are printed, in the parser.py file. You can add more debug prints or other to these statements if it is causing issues. In general, this gui is meant to be a demo tool and may not be fully robust for all use cases.

    Regards,

    Jackson

  • 0 in reply to Jackson Thomas
    Intellectual 530 points

    Hai Jackson,

    We added debug prints in the above warning. According to that, we got, 

    Point Cloud TLV Parser Failed : index 12 is out of bounds for axis 2 with size 12

    TLV Header Parsing Failure : unpack requires a bytes object of length 8

    Target TLV parse Failed : unpack requires a bytes object of length 112

    The above is the original warning : obtained debug prints.

    Please look into it. This happens frequently.

    Thanks and regards,

    Aleena N A

  • 0 in reply to Aleena N A
    TI__Genius 14415 points

    Hi Aleena,

    Thanks for finding more information. This GUI is provided as an example an provided as is. We will look into upgrading the GUI to solve some of these issues, but there is not currently a timeline for this. 

    Best Regards,

    Jackson