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IWR6843ISK-ODS: Difference between the projectspecs for xwr6843ISK and xwr6843ODS?

Joshua Chough
Prodigy 70 points
Part Number: IWR6843ISK-ODS

I am trying to rebuild the source files for the mmWave Out Of Box Demo for mmWave sensor version IWR6843ISK-ODS. I have mmWave SDK version 3.5 installed.

In ~/ti/mmwave_industrial_toolbox_4_11_0/labs/, the Out_Of_Box_Demo/src/ has xwr6843ISK/ and xwr6843ODS/.

I am unsure as to why there are different projectspecs for xwr6843ISK and xwr6843ODS. And only xwr6843ISK seem to have the dss and mss projectspecs. The developer instructions for this lab do not mention the xwr6843ODS projectspec. Since my sensor is the IWR6843ISK-ODS, should I use both projectspecs somehow? How do I properly build the firmware for this OOB Demo lab for my specific sensor?

  • +1
    TI__Genius 17265 points

    Hi Joshua,

    We often shorten the name "IWR6843ISK-ODS" to just ODS, so you would want to use the ODS version of the OOB provided. There are 2 differences between the ISK and ODS versions of the Out of Box lab provided in the mmWave Industrial Toolbox. 

    The first difference is that since the ODS and ISK antenna have different antenna layouts, there is some differences in the code to account for this. Without this, the angle estimation of the points would be incorrect.

    The second difference is that the ISK version uses the HWA and the DSP, while the ODS version uses only the HWA. This is just a design choice on our side to show how to do the Out Of Box processing chain with and without the DSP. It is certainly possible to modify the ODS version of the lab to use the DSP if that is something you need, and I can direct you to threads related to that topic if needed.

    Best Regards,
    Alec

  • 0 in reply to Alec May
    Prodigy 70 points

    Hi Alec,

    Thank you for the clarification; that was very helpful!

    I would appreciate it if you could direct me to threads related to modifying the ODS version of the lab to use the DSP. Would that just mean creating a DSS projectspec?

    Best,

    Joshua

  • +1 in reply to Joshua Chough
    TI__Genius 17265 points

    Hi Joshua, 

    The easiest way to quickly do this may be to actually start with the 6843ISK version of the OOB demo (which uses the DSP) and then make the few changes to make it support the ODS. You will likely want to change the aoaproc module out (https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/976891/iwr6843isk-ods-how-to-replace-aoa-to-aoa2dproc-in-68xx_mmwave_sdk_dsp_dss) and will want to add the antenna geometry file from the ODS OOB and the related changes in the MSS main in order to support the antenna geometry file.

    Best Regards,
    Alec

  • 0 in reply to Alec May
    Prodigy 70 points

    Hi Alec,

    That sounds promising! I will try it out and get back to you.

    Best,

    Joshua