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调用芯片F28377s的ControlSUILTE里的库,完成1024点CFFT,执行时间过长的问题

Other Parts Discussed in Thread: CONTROLSUITE

各位专家好:

        调用芯片F28377s的ControlSUILTE里的库,完成1024点CFFT,计算执行时间,方式是采用定时器,定时器的定义为 ConfigCpuTimer(&CpuTimer0, 200, 100);

下图是user guide 里给出的执行时间,采用的芯片是F28377D,即双核DSP,不清楚CPU的时钟设置成多少,如果按200M算,执行时间不过300us,但是我采用相同的程序,计算出的时间确是4ms,两者相差十多倍,虽然单核比双核慢,但是速度不至于差这么多,所有请专家帮忙看一看,找出执行速度慢的原因,万分感谢!