IWR1642: Application on R4F?

Hi Janice,

You have not mentioned which People counting demo you are looking at. I have provided the below information in context of the Overhead 3D People Counting Demo but it similarly applies to the other demos as well. 

When you say remaining resources, do you mean memory and processing MIPS headroom available on the Cortex R4F after the people counting related processing on the R4F? 

During compilation, the TI linker generates individual .map files for DSS (i.e. C674x DSP) and MSS (i.e Cortex R4F) applications. The demo includes the .map files in the prebuilt binaries folder as shown below. Please refer to the MSS map file R4F memory usage info:

C:\ti\mwave_industrial_toolbox_4_4_1\labs\people_counting\overhead_3d_people_counting\prebuilt_binaries\overhead_3d_people_count_68xx_mss.map

Please refer to the Linker command file resources provided in the following thread to understand how memory sections are created and used:

CCS/IWR6843ISK: Training for development

You will need use TI Code Composer Studio for development. The above thread also includes training resources for it, and instructions for building the demo and running it in CCS mode are included in the demo user guide at: http://dev.ti.com/tirex/explore/node?node=AF4jhFuBH13mLPnsCXgawg__VLyFKFf__LATEST. Refer to the developer's guide section.

Regards

-Nitin

Hi Janice,

I would recommend using the IWR6843 and the associated people counting demos. The people counting demo on IWR1642 has been deprecated. The .map file is generated in the corresponding build directory (for both DSS and MSS projects) as part of the build process so you can build the demo using the instructions provided in the user guide and get the .map file.

The MIPS usage information (which varies depending upon the number of detected points and tracked objects per frame) is sent out in the output message header in the timingInfo field. Please check the function MmwDemo_uartTxTask in mss_main.c as shown below:

File: C:\ti\mmwave_industrial_toolbox_4_4_1\labs\people_counting\68xx_3D_people_counting\src\mss\mss_main.c

    /* wait for new message and process all the messages received from the peer */
    while(1)
    {
        Semaphore_pend(gMmwMssMCB.uartTxSemHandle, BIOS_WAIT_FOREVER);

        tlvIdx          =   0;
        uartHandle      =   gMmwMssMCB.loggingUartHandle;
        objOut          =   &(gMmwMssMCB.pointCloudToUart);
        subFrameIdx     =   gMmwMssMCB.currSubFrameIdx;
        timingInfo      =   &gMmwMssMCB.subFrameStats[subFrameIdx].outputStats;
        frameIdx        =   gMmwMssMCB.frameStatsFromDSP->frameStartIntCounter;

        packetLen = sizeof(Pcount3DDemo_output_message_header);
        header.chirpProcessingMargin        =   timingInfo->interChirpProcessingMargin;
        header.frameProcessingTimeInUsec    =   timingInfo->frameProcessingTimeInUsec;
        header.trackingProcessingTimeInUsec =   gMmwMssMCB.trackerProcessingTimeInUsec;

Thanks

-Nitin