How to use the FFT routine?

[SeanG_65]

Is there any document which details how to use this routing please? I'd like to have a "play" but I don't know where to start on the application I have in mind.

[SeanG_65]

Nudge

[top204]

There are demo programs using the DSP routines in the Samples24 folder: "C:\Users\Les\PDS\Samples24\DSP\", including the FFT.

For the 8-bit FFT, there are demos in the Samples folder: "C:\Users\Les\PDS\Samples\New Samples\FFT_8_Bit\"

Essentially, a collection of ADC samples is taken and loaded into an array, then the FFT routine is called and they come back with the frequency in sections from low to high in an array, normally called "blocks".

[SeanG_65]

Yes, Les, BUT.....

What are the setup prameters?
What is the frequency resolution?
What is the max frequency it is capable of resolving?

Sorry if these questions seem dumb, but I like you, suffer from a head injury, and it has slowed me learning capability to almost zero.