TI單晶片毫米波雷達代碼走讀（六）—— 距離維（1D）處理 C代碼實作之加窗處理

上一篇文章，我們拿MATLAB走了一遍1D處理的流程，這一期我們來看看C代碼如何實作的，首先回顧一下void MmwDemo_interChirpProcessing()函數，代碼如下：

/**
 *  @b Description
 *  @n
 *    Interchirp processing. It is executed per chirp event, after ADC
 *    buffer is filled with chirp samples.
 *
 *  @retval
 *      Not Applicable.
 */
void MmwDemo_interChirpProcessing(MmwDemo_DSS_DataPathObj *obj, uint8_t chirpPingPongId)
{
    uint32_t antIndx, waitingTime;
    volatile uint32_t startTime;
    volatile uint32_t startTime1;
    MmwDemo_DSS_dataPathContext_t *context = obj->context;

    waitingTime = 0;
    startTime = Cycleprofiler_getTimeStamp();

    /* Kick off DMA to fetch data from ADC buffer for first channel */
    EDMA_startDmaTransfer(context->edmaHandle[MMW_DATA_PATH_EDMA_INSTANCE],
                       MMW_EDMA_CH_1D_IN_PING);

    /* 1d fft for first antenna, followed by kicking off the DMA of fft output */
    for (antInd