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IWR6843: How to change the package delay time setting in mmWave cli tools?

Part Number: IWR6843

Hi team,

Quick question, how to change the package delay time setting in mmWave cli tools?

Customer using setting shown below, they are facing the package loss issue. The data size always loss, but it will not be an issue while using mmWave studio.

profileCfg 0 60 46.00 6.30 27 197379 0 63.242 0 256 12500 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 2 128 32 125 1 0

After change the "frameCfg 0 2 128 32 125 1 0" to "frameCfg 0 2 72 32 125 1 0". Then data size became correct.

In general, i will recommend to change the "package delay time" from 25 to 50us to fix this package loss issue. But i didnot found the parameter to change it in mmWave cli tools.

Let me know if you have any solution to do it.

Thanks.

Wesley

  • Hey Wesley,

    When you say mmWave cli tools, can you be more specific? Are you using the CLI version of studio? Or connecting to an existing demo via CLI and sending cfg? I suspect that you are exceeding the max throughput of the UART port, and would need to either modify the UART-USB bridge to allow for a higher baudrate, or would need to transition to a different output method such as SPI. This would explain why it works via studio, since you would likely  be capturing data over ethernet. Let me know your thoughts.

    Best Regards,
    Alec

  • Hi Alec,

    Sorry to make you confuse.

    What I'm talking is the mmwave cli tools(mmWave studio cli version)C:\ti\mmwave_platform_1_2_1\tools\studio_cli\gui\mmw_cli_tool

    in traditional mmWave studio, we have one parameter to change the DCA1000 package delay time from 25us to 50us to avoid package loss.

    But in mmwave cli tools, we didnot include this API in cfg file. Can you please let me know how to change it with mmwave cli tools?

    Thanks.

    Regards,

    Wesley

  • Wesley,

    Understood. I'm not sure that this is possible with the CLI studio tool, since this is a setting on the DCA1000 itself, and the CLI tool is only connected to the Radar Device. My understanding is that you would need to add the USB connection to the DCA1000 directly and manually send the command as you would with the traditional mmWaveStudio tool.

    Best Regards,
    Alec