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Altera_Forum

Honored Contributor I

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03-15-2017
03:38 PM

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FFT Megafunction v12.0 issues

Hi,

I was using a FFT Megafunction v12.0 to calculate 512-point FFT, and evaluating it on a DE2-115 board, which has a Cyclone IV E FPGA. The issue I have with this Megafunction is that it always gives incorrect results in the first two run, and gives the correct results in the third run and after, given that I feed the same data into the FFT core. Have any of you met the same problem? I don't understand why this is the case? Is it something to do with the Megafunction itself or it is related to my FFT controller design. Any input is welcome. Thanks, -RogerLink Copied

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Altera_Forum

Honored Contributor I

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03-15-2017
03:46 PM

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Altera_Forum

Honored Contributor I

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03-15-2017
03:56 PM

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Altera_Forum

Honored Contributor I

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03-15-2017
04:40 PM

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Altera_Forum

Honored Contributor I

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03-15-2017
07:00 PM

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