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IWR6843: Why does People Counting lab checksum only care about the header?

Danh Pham
Intellectual 295 points
Part Number: IWR6843

Hello,

Why does the checksum send with the header in the people counting demo only use the header's info (packetLength, frameNumber...) and not the packet's data itself (point cloud, targets,etc..)?

Does this mean that this checksum will not be able to guarantee that there won't be any data mismatch in sending the packet through UART?

Thank you!

  • 0
    TI__Genius 14415 points

    Hello,

     You are correct, this checksum validates the data in the header, which validates the correct amount of data (from packetLength) in the rest of the frame, but not necessarily the contents of that data. If you want to implement a full CRC or checksum of the entire packet that is possible, you can implement it in a similar way to the header checksum.

    Regards,

    Jackson