[参考译文] AWR1843BOOST：dsp_fft32x32 ()导致程序崩溃和内存异常

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https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/1489620/awr1843boost-dsp_fft32x32-causing-program-crash-and-memory-anomalies

器件型号：AWR1843BOOST
Thread 中讨论的其他器件：AWR1642

工具与软件：

大家好、我目前正在开发一个定制项目、因此给了 DSP_fft32x32()生成逻辑功能 interFrameProcessing(). 但是、在多次运行函数之后(随机次数)、程序会崩溃。

调试过程中、我注意到一个奇怪的现象：的输入参数之一 DSP_fft32x32()、 obj->pVitalSignsBuffer_Cplx的.imag成员值意外修改。不过、根据我的理解、 DSP_fft32x32()不应发生变化 obj->pVitalSignsBuffer_Cplx. 在我注释掉时 DSP_fft32x32().imag的参数obj->pVitalSignsBuffer_Cplx保持为零。

我已检查内存冲突或覆盖。在"Expressions"窗口中、对于以下数据结构、存储器分配显示正常：

obj->pVitalSignsSpectrumTwiddle32x32
obj->pVitalSignsBuffer_Cplx
obj->pVitalSigns_SpectrumCplx

每个信号的数据长度均为1024、和 obj->breathingWfm_Spectrum_FftSize也设置为1024。

此外、当我注释掉时 DSP_fft32x32()中的数据 obj->pVitalSignsSpectrumTwiddle32x32和 obj->pVitalSignsBuffer_Cplx保持稳定、并且程序不会崩溃。这使我怀疑这个问题可能与执行有关 DSP_fft32x32().

我想问：

此问题的可能原因是什么？
是否有任何其他方法来进一步调查问题？
如何更准确地解释控制台中显示的错误代码？

下面、我提供了相关的错误消息和代码片段。如果有任何见解、将不胜感激。谢谢！

DSP_fft32x32()函数调用：

    // Input to the FFT needs to be complex
    memset((uint8_t *)obj->pVitalSignsBuffer_Cplx, 0, obj->breathingWfm_Spectrum_FftSize * sizeof(cmplx32ReIm_t));
    for (loopIndexBuffer = 0; loopIndexBuffer < obj->circularBufferSizeBreath; loopIndexBuffer++)
    {

        obj->pVitalSignsBuffer_Cplx[loopIndexBuffer].real = (int32_t) obj->scale_breathingWfm*obj->pVitalSigns_Breath_CircularBuffer[loopIndexBuffer];
        obj->pVitalSignsBuffer_Cplx[loopIndexBuffer].imag=0;
    }

//     Input is overwritten by the DSP_fft32x32 function
    DSP_fft32x32((int32_t*) obj->pVitalSignsSpectrumTwiddle32x32,
                 obj->breathingWfm_Spectrum_FftSize,
                 (int32_t*) obj->pVitalSignsBuffer_Cplx,
                 (int32_t*) obj->pVitalSigns_SpectrumCplx);

控制台错误代码：

A0=0xfffffd48 A1=0x0
A2=0x814a08 A3=0x0
A4=0x818f80 A5=0x0
A6=0x200c0e90 A7=0x814b00
A8=0x2 A9=0x7ec8f4
A10=0x1 A11=0x7f2ca0
A12=0x7f7e36 A13=0x818040
A14=0x0 A15=0x7eb410
A16=0x0 A17=0x7f6b94
A18=0x80 A19=0x0
A20=0x0 A21=0x80
A22=0x818f80 A23=0x0
A24=0x7ed560 A25=0x0
A26=0x2 A27=0x817a08
A28=0x1 A29=0x0
A30=0x4783 A31=0x818438
B0=0x0 B1=0x3
B2=0x0 B3=0x7eb644
B4=0xfffffffa B5=0x4c
B6=0x1 B7=0x0
B8=0x0 B9=0x817c28
B10=0x80 B11=0x0
B12=0x0 B13=0x0
B14=0x7ed560 B15=0x4783
B16=0x0 B17=0x7
B18=0x14010103 B19=0x0
B20=0x300 B21=0x0
B22=0x0 B23=0x0
B24=0x0 B25=0x0
B26=0x0 B27=0x0
B28=0x0 B29=0x0
B30=0x80 B31=0x0
NTSR=0xffffffff
ITSR=0x0
IRP=0x0
SSR=0x1
AMR=0x812cb1
RILC=0x818da8
ILC=0x8187e4
Exception at 0xe00214
EFR=0x2 NRP=0xe00214
Internal exception: IERR=0x180
Loop buffer exception
Missed stall exception
{module#23}: line 256: error {id:0xb0000, args:[0x8184d4, 0x4783]}
xdc.runtime.Error.raise: terminating execution

内存分配代码：

    /************************/
    /* Static L3 allocation */
    /************************/

    /* Only for VSD subFrame */
    obj = &objIn[1];

    volatile uint32_t prevL3_end = 0U;

    for(subFrameIndex = 0; subFrameIndex < NUM_SUBFRAMES; subFrameIndex++)
    {
        if(prevL3_end < l3HeapEndLocationForSubframe[subFrameIndex])
        {
            prevL3_end = l3HeapEndLocationForSubframe[subFrameIndex];
        }
    }

    MMW_ALLOC_BUF(pRangeProfileCplx, cmplx16ReIm_t,
                  prevL3_end, SYS_MEMORY_ALLOC_DOUBLE_WORD_ALIGN_DSP,
                  obj->numRangeBins);

    MMW_ALLOC_BUF(pVitalSigns_Breath_CircularBuffer, float,
                  pRangeProfileCplx_end, SYS_MEMORY_ALLOC_DOUBLE_WORD_ALIGN_DSP,
                  obj->circularBufferSizeBreath);

    MMW_ALLOC_BUF(pVitalSigns_Heart_CircularBuffer, float,
                  pVitalSigns_Breath_CircularBuffer_end, SYS_MEMORY_ALLOC_DOUBLE_WORD_ALIGN_DSP,
                  obj->circularBufferSizeHeart);

    MMW_ALLOC_BUF(pMotionCircularBuffer, float,
                  pVitalSigns_Heart_CircularBuffer_end, SYS_MEMORY_ALLOC_DOUBLE_WORD_ALIGN_DSP,
                  obj->motionDetection_BlockSize);

    MMW_ALLOC_BUF(pDopplerWindow, float,
                  pMotionCircularBuffer_end, SYS_MEMORY_ALLOC_DOUBLE_WORD_ALIGN_DSP,
                  DOPPLER_WINDOW_SIZE);

    MMW_ALLOC_BUF(pVitalSignsSpectrumTwiddle32x32, cmplx32ReIm_t,
                  pDopplerWindow_end, SYS_MEMORY_ALLOC_DOUBLE_WORD_ALIGN_DSP,
                  obj->breathingWfm_Spectrum_FftSize);

    MMW_ALLOC_BUF(pVitalSignsBuffer_Cplx, cmplx32ReIm_t,
                  pVitalSignsSpectrumTwiddle32x32_end, SYS_MEMORY_ALLOC_DOUBLE_WORD_ALIGN_DSP,
                  obj->breathingWfm_Spectrum_FftSize);

    MMW_ALLOC_BUF(pVitalSigns_SpectrumCplx, cmplx32ReIm_t,
                  pVitalSignsBuffer_Cplx_end, SYS_MEMORY_ALLOC_DOUBLE_WORD_ALIGN_DSP,
                  obj->breathingWfm_Spectrum_FftSize);

    MMW_ALLOC_BUF(pVitalSigns_Breath_AbsSpectrum, float,
                  pVitalSigns_SpectrumCplx_end, SYS_MEMORY_ALLOC_DOUBLE_WORD_ALIGN_DSP,
                  obj->breathingWfm_Spectrum_FftSize);

已obj->pVitalSignsBuffer_Cplx在 Memory Browser 中检查并发现该.imag字段被意外修改DSP_fft32x32()：