IWR1642BOOST: Understanding fHistRT MATLAB data

Jake Rice

Part Number: IWR1642BOOST

Hi!

I have been working with the IWR1642BOOST EVM's traffic monitoring lab from the industrial toolbox 3.6.2 and upon running the simulation have attained some fHistRT MATLAB files containing the scenes data. I am unsure if there is a document explaining each of the fields within the MATLAB structure file so am wondering if somebody could please point me to it, or please explain what each fields data represents.

I am mostly looking for:

- Targets range, angle and velocity (not point cloud data only identified targets)

- Potentially estimated size of the vehicle (if possible)

Thank you heaps in advance :)

over 4 years ago

0 Nitin Sakhuja over 4 years ago

TI__Mastermind 30405 points

Hi Jake,

Please refer to the resource pointed in the following thread.

Compiler/IWR1642: how to parsing traffic monitring demo uart data

Once you understand the above, you can also refer to the source of the Matlab visualizer provided in the demo as a reference example on how to parse the output stream.

Regards

-Nitin

0 Jake Rice over 4 years ago in reply to Nitin Sakhuja

Prodigy 120 points

Thank you very much Nitin!

I am still a little lost as to what the data represents within the targetlist in MATLAB, I understand that it should hold all of the information shown below?

But I don't quite understand where the posX, posY, velX, velY, accX and accY data is? (below is an example of a target list from one of my fhirst files) does 'S' in the below image represent the position velocity and acceleration?

0 Nitin Sakhuja over 4 years ago in reply to Jake Rice

TI__Mastermind 30405 points

Jake,

Are you using the Visualizer provided with the demo in the following directory or is the above a snapshot from your own parsing script?

C:\ti\mmwave_industrial_toolbox_3_6_2\labs\lab0013_traffic_monitoring_16xx\gui\tm_demo.m

The above script provides a complete parser implementation and you should be able to re-use / derive from it as needed. The parsing logic start at line 326 as shown below.

while(1)
    while(lostSync == 0)

        frameStart = tic;
        fHist(frameNum).timestamp = frameStart;
        bytesAvailable = get(hDataSerialPort,'BytesAvailable');
        if(bytesAvailable > maxBytesAvailable)
            maxBytesAvailable = bytesAvailable;
        end
        fHist(frameNum).bytesAvailable = bytesAvailable;
        if(gotHeader == 0)
            %Read the header first
            [rxHeader, byteCount] = fread(hDataSerialPort, frameHeaderLengthInBytes, 'uint8');
        end
        fHist(frameNum).start = 1000*toc(frameStart);
        
        magicBytes = typecast(uint8(rxHeader(1:8)), 'uint64');
        if(magicBytes ~= syncPatternUINT64)
            reason = 'No SYNC pattern';
            lostSync = 1;
            break;

Please first check that the demo works with the provided visualizer and use that as a reference for parsing / debugging.

Note that we are not able to support / debug your own parsing code.

Thanks

-Nitin

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IWR1642BOOST: Understanding fHistRT MATLAB data