FIR滤波器的抽取问题

PIC32 MZ2048 EFM100 HORDER 2.04i AM在函数中运行DSP1 FieldFixIM32（）时存在问题。DSP滤波功能，DSPFILTERFIL32（）没有内部抽取，工作良好。相同的数据，相同的抽头，相同的系数，相同的输入缓冲器大小。一个大约50%次的惩罚。函数dSP.FielFieldIM32（）似乎完成并返回，但是应用程序停止运行。我猜测它触发了一个异常或中断，这些异常或中断是不被处理的，事情从那里开始下坡。我如何捕获和处理异常或中断，这是我没有预料到的？你如何调试这样的东西？我使用以下参数，我相信满足抽取函数的规则。输入缓冲器大小＝200个采样缓冲器大小＝40个采样率＝5TAPs＝系数个数＝延迟线长度＝8个尺度＝0（无位移位）---格雷厄姆＝=
                    
                    
               
                                                                                      以下为原文

                                                                            PIC32MZ2048EFM100
HARMony 2.04

I am having problems getting the function DSP_FilterFIRDecim32() to run in a program.

The DSP filter function, DSP_FilterFIR32() without the internal decimation, works fine.
Same data, same taps, same coefficients, same input buffer size.
I could use this function, and separately decimate, but at about a 50 percent time penalty.

The function DSP_FilterFIRDecim32() seems to complete and return, but the application stops running.
I am guessing that it triggers an exception or interrupt that is not handled, and things go downhill from there.

How do I catch and handle an exception or interrupt that I am not expecting?
How do you debug something like this?

I am using the following parameters, which I believe satisfies the rules for the decimation function.
Input buffer size = 200 samples
Output buffer size = 40 samples
Decimation rate = 5
Taps = Number of coefficients = Delay line length = 8
Scale = 0 (No bit shifting)

--- Graham

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