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IWR6843ISK: IWR6843ISK

Part Number: IWR6843ISK

I am using IWR6843ISK and 68xx_mmwave_sdk_dsp of out_of_box_demo.

I modified cfg file like below.

dfeDataOutputMode 1
channelCfg 15 5 0
adcCfg 2 1
adcbufCfg -1 0 1 1 1
profileCfg 0 60 168 7 40 0 0 100 1 64 2000 0 0 158
chirpCfg 0 0 0 0 0 0 0 5
frameCfg 0 0 1 0 1000 1 0

I want to use only one chirp & one repeat in a frame.

but, problem occurred.

handle in DPC_ObjectDetection_frameStart (DPM_DPCHandle handle) at objdetrangehwa.C points to address 0x00000000.

so system faulted at below code.

/* Check if previous frame (sub-frame) processing has completed */
DPC_Objdet_Assert(objDetObj->dpmHandle, (objDetObj->interSubFrameProcToken == 0));

I don't know i should fix any part of code.

Does out_of_box_demo support only one repeat?

please tell me a solution. thank you.

  • I have error above.

    I modify like below.

    Does out_of_box_demo support only over two repeat?

    thank you.

  • Hello,

    The Out of box demo requires the number of loops (i.e. repetitions of the chirp in the frame) to be at least 4 as mentioned in the SDK user guide. You can change it to a minimum of two chirps (but not 1) by changing the Doppler DPU Window type as shown in the file below:

    You'll need to replace the highlighted constant with the MMWAVELIB_WIN_RECT.

    Thanks

    -Nitin

  • hi 

    I am using only RangeFFT with HWA.

    I blocked code from doppler to AOA about configuring and processing 

    when i use one chirp & two repeats in one frame,  it's OK.

    but when i use one chirp & one repeat in one frame, It's NG.

    NG position at code is below.

    handle in DPC_ObjectDetection_frameStart (DPM_DPCHandle handle) at objdetrangehwa.C points to address 0x00000000.

    so system faulted at below code.

    /* Check if previous frame (sub-frame) processing has completed */
    DPC_Objdet_Assert(objDetObj->dpmHandle, (objDetObj->interSubFrameProcToken == 0));

    I don't know i should fix any part of code.

    Even if I only use up to rangeFFT, does out_of_box_demo only support more than two repeats?

    thank you.

  • Hi Lim,

    Yes, as noted in the RangeHWA DPU HTML documentation, (number of chirps per frame/number of TX antennas) has to be an even number so the minimum number of chirp loops supported is 2.

    Thanks