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AWR1843BOOST: Automotive Toolbox - Lab7- Medium Range Radar- 1D FFT

Jiahui Gao
Expert 7250 points
Part Number: AWR1843BOOST
Other Parts Discussed in Thread: DCA1000EVM, AWR1843

Hi team,

The customer asked us to post this issue here

I am having the following doubts in Lab-7:


1. Lab contains 1D, 2D output, what is the starting address and Ending address of the 1D FFT data. What is the document to refer to the address of all the 1D and 2D FFT data?

2. I have observed that the range profile of Zero Doppler plot in DEMO Visualizer is sent through UART (without connecting DCA1000EVM). I hope that the range profile is nothing but the 1D FFT data plot. So, is it possible to get the 1D FFT data through UART in lab7 as like that of Demo Visualizer range profile plot? If yes, could you guide me in the way of extracting the 1D FFT data through UART? (like documents to refer or the steps to be followed) 

Thanks & Best regards,

Vivian

  • 0
    TI__Mastermind 20605 points

    Hi Vivian,

    Which version of the toolbox are you using? There is no direct document that tells the address of these 1D and 2D FFT buffers and will have to be looked at using source code.

    Regards,

    Kaushik

  • 0 in reply to Kaushik Gowda
    TI__Expert 7250 points

    Hi Kaushik,

    Thanks for your quick reply.

    I am using Automotive Toolbox 2.7 and 3.6. For my second question, In Demo Visualizer (ver-3.5 - AWR1843 BOOST), the range profile of zero doppler graph, shows Range bin VS Reflected Power, How I am got this graph and data in Automotive Toolbox. This data transfer is send through UART only?

    Thanks & Best regards,

    Vivian

  • 0 in reply to Jiahui Gao
    TI__Mastermind 20605 points

    Hi Vivian,

    1. Please look at the function MmwDemo_dataPathConfigBuffers which allocates memory for each of the buffers in the radar signal chain. You can directly do a readback of these buffers' addresses to know where the 1D and 2D FFT will be stored. Alternatively, you can also look for it in CCS by setting the expressions to the following vairables.
      1. gMrrDSSMCB.dataPathObj[subFrameId].fftOut1D
      2. gMrrDSSMCB.dataPathObj[subFrameId].fftOut2D
    2. The data is indeed sent out of UART. You can refer to how it is done by going through the demo code of some other TI rex application as shown below.
       
      The detMatrix can also be found in the same gMrrDSSMCB.dataPathObj[subFrameId] object and can write the range profile out similarly.

    Regards,

    Kaushik