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Omap-L138DSP核调用FFT

zhichang feng
Intellectual 261 points
Other Parts Discussed in Thread: OMAP-L138

        请问omap-L138的C674X调用DSPLIB（dsp67x.lib）库中的FFT函数void DSPF_sp_cfftr2_dit(float * x, float * w, short n)、void DSPF_sp_cfftr4_dif(float * x, float * w, short n) 这两个函数有什么区别？另外形参中的参数都代表什么含义？我要做256点的FFT，该如何定义这三个参数？运算结果存到哪个指针地址呢？另外DSPF_sp_icfftr2_dit（）怎么用呢？谢谢了！