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AWR6843AOPEVM: Radar cube data over UART technical query

Joselito Go
Expert 3850 points
Part Number: AWR6843AOPEVM
Other Parts Discussed in Thread: AWRL6432

Tool/software:

Hi Team,

I would like to stream off the radar cube data over UART for the out-of-box demo sample project provided for the AWR6843AOPEVM module. 

1) Is it possible to do so as mentioned?

2) Do I only need to make changes in the project code, or does the configuration file also require changes?

3) Where do I need to start looking for the radar cube data? Is it in the main.c file or in objectdetection.c file?

Regards,

Joselito

  • 0
    TI__Expert 8732 points

    Hi Joselito,

    1) This is possible depending on the size of the radar cube and if you have enough time to send all the data over UART

    2) Changes to at least the project code, and maybe the configuration are needed if you need to reduce the size of the radar cube.

    3) Please take a look around the E2E forum for where to begin, there are a few threads that discuss streaming radar cube data off the device.

    You can start with this thread for example, it might give you an idea:https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/1162474/iwr6843isk-how-to-get-radar-cube-data 

    Regards,

    Tim

  • 0 in reply to Tim Henderson
    TI__Expert 4605 points

    Hi Tim,

    Thank you for your support. I received a feedback from our customer. Please see below.

    I would like to create a configuration file for AWR6843AOPEVM. I would like to use only a single Transmitting and single receiving antenna for my operations. Here are my questions:

    1) Is it possible to create a configuration file on mmWave Sensing Estimator tool satisfying the above requirements of a single transmitting and receiving antenna? (That would suggest the number of virtual antennas is 1)

    2) If the hypothesised configuration file above shows no error, but fails while loading it onto the device, what configuration can I go to? (I would like to have as less number of antennas as possible)

    Thank you for your help.

    Kind regards,

    Marvin

  • 0 in reply to Marvin Cantos
    TI__Expert 8732 points

    Hi Marvin, responses below:

    1) Yes, please look at the "channelCfg" command to enable single RX or TX. There is more information on this in the SDK 3.6 user's guide.

    2) 1x1 antenna array is possible, and should not throw any errors. Please post a separate question if there are errors encountered when trying this.

    As a side note - I'd like to also recommend the AWRL6432 for the customer. What is their end application? AWRL6432 will be cheaper and have lower power, so it might work better for their needs.

    Regards,

    Tim

  • 0 in reply to Tim Henderson
    TI__Expert 4605 points

    Hi Tim,

    Thank you for your prompt response. Please see the feedback from our customer.

    Thank you for reaching out with your assistance. In regards to the last mail, I would like to stick to AWR6843AOPEVM. I also wish to note that the single Tx and single Rx antenna configuration throws an error while passing the configuration file onto the device, stating as invalid configuration. I came up with an idea to use a 3Tx, 4Rx configuration in the configuration file, and make changes in the source code of the Out-of-box-demo to capture from one antenna. Is this possible and a plausible way of solving the problem?

    Thank you for your help.

    Kind regards,

    Marvin

  • 0 in reply to Marvin Cantos
    TI__Expert 8732 points

    Hi Marvin, response below:

    It'd be helpful if you could ask the customer for their configuration file so we can see if anything is configured wrong - this is possible. As an example, you can check out our level sensing demo which uses 1TX an 1RX, we have a configuration file that works for 68xx devices:

    radar_toolbox\source\ti\examples\Level_Sensing\high_accuracy\chirp_configs\high_accuracy_demo_68xx.cfg

    Making changes to the source code could be an alternative, but will waste a lot of power and I believe will be too complicated - I'd suggest the 1TX 1RX route.

    Regards,

    Tim