Hi to all!

I would like to know if there are any trick to make this FFT

( https://www.avrfreaks.net/index.p...

)

from the project section to work, because I could not even build it in AvrStudio 4(with GCC of course)...It says that it don't find the three main functions:

fft_input(capture, bfly_buff);

fft_execute(bfly_buff);

fft_output(bfly_buff, spektrum);

I DO included the main.h and the fft.h in the 'Header Files', but beside that, I don't know what else I have to do....

Thank you in advance! :shock: