Hi,
I've implemented the DSP library from Infineon on their 80MHz XE167 Easykit. I'm using the real_DIT_FFT function from the library. It gives me the right results and runs quite fine. But it needs 2 to 3 times more calculation time as the documentation of the library predicts. I've already sent a mail to the Infineon DSP helpline, but haven't received an answer yet. I'm quite new to the XE167 and the Keil dev. environment. So maybe there are some tricks to speed up some internal access to the RAM or something, which I'm not aware of yet. I've tried to put all necessary arrays for the real_DIT_FFT function to several RAM segments (sdata, idata) - unfortunately without much speed up.
Has anyone of you in this forum more experience with this dsp library and has a suggestion for me?
I'm using Keil uVision3 btw.
Thanks in advance, Daniel