Mega128 recently wrote a 128-point FFT procedures, floating-point operations, Hanning window. Since the window function and the twiddle factor look-up table has been adopted, so the speed can also be, the initial value to the process through high-speed AD collected 20KHz sinusoidal signal. The calculation results with the Matlab

FFT
...\default
...\.......\dep
...\.......\...\FFT.o.d
...\.......\FFT.eep
...\.......\FFT.elf
...\.......\FFT.hex
...\.......\FFT.o
...\.......\Makefile
...\FFT.aps
...\FFT.c

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