28335 8192 points fft

yong li64142

Hi Expert,

We are using 28335 to do 8192 points fft. But 28335 has 34K X 16 bits internal memory which are not enough to run the CFFT_f32 function with 8192 points. External memory is very slow and around 0.3 second per call. We used to have 8192 fft program which can do same input/output buffer 8192 fft on VC33.

Does 28335 have similar fft program (same in/out buffer) to meet our requirement?

thanks,

over 12 years ago

0 Vishal_Coelho over 12 years ago

TI__Mastermind 20850 points

Hi Yong,

The current FPU dsp library does the FFT computation off-place i.e. seperate input/output buffers. We do plan to implement in-place computation in future revs of the library, but that may be a while before it is released.

The fixed point library, however, can do in-place computation if fixed-point computation is a viable option.

0 yong li64142 over 12 years ago in reply to Vishal_Coelho

Prodigy 110 points

Thanks!

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28335 8192 points fft