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FFT库(ControlSuite包中的)

Other Parts Discussed in Thread: CONTROLSUITE

我是用新的ControlSuite中的FFT浮点库和定点库。浮点库的毛病是matlab和ccs3.3计算结果不一致。e2e.ti.com/.../1694197

定点库是软仿和硬仿时间不一致,结果也不一样。软仿都是对的,时间也勉强,但硬仿怎么都不对。

请指点,谢!

  • 我用的是CCS3.3

  • 您好

    你跑过我们库提供的FFT的例程吗?你可以先跑一下例程,跑一个4点的试试。另外有一些函数要求输出数组要4N word边界对齐。

    src Pointer to in-order data samples stored in alternate locations.
    dst Pointer to destination array, to store bit revered complex output, the destination array
    buffer must be aligned to 4N word boundary (16-bit word length) or 2N long words,
    where N is the size of the complex FFT (a power of 2).
    size Number of real-data samples (N) to be bit reversed in complex form; it should be power
    of 2.