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FFT on 28035

Lorenzo Mattei
Prodigy 10 points
Other Parts Discussed in Thread: TMS320F28035

Good afternoon,

I'm working on an audio processing project for an automotive sensor and I need to perform a FFT calculation on the TMS320f28035 MCU. I'd like to perform the calculation using the float32 capabilities of the  CLA.

Can the 28035 compute the FFT using the CLA? Is there any library and examples provided by TI to do so?

Thanks a lot

Lorenzo Mattei

  • 0
    TI__Mastermind 20850 points

    Hi Lorenzo,

    It will be difficult, not impossible, to implement FFT on the CLA. The CLA only has two address registers MAR0 and MAR1 and you will likely require atleast 4 to keep track of input/outputs from the butterfly of each stage. You will most likely lose more cycles on the CLA doing memory management than actual computation.

    To my knowledge, there aren't any FFT routines for the CLA. I would recommend using the fixed point library for the C28 instead.