11 lines
214 B
C
11 lines
214 B
C
#pragma once
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#include "derivative.h"
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#define FFT_N 256
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#define FFT_BIN(num, re) (uint16_t)((float)(num + 0.5) * re)
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#define FFT_INDEX(freq, re) (uint16_t)((float)freq / re)
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void FFT(q15_t *data, uint16_t len);
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