Ok thanks, Ard_newbie. I will look into this. I have implemented an analogRead(0) inside a for-loop that runs SIGLEN times. I have used delay_microseconds(Ts - runtime); // Obtain SampleTime (Ts) as specified
It actually has worked quite well- but I got the feeling I could do much better if I used timed interrupts.
That the whole thing would work more precise.
I understand that calling the analogRead() function often takes too long time.
That if I can go directly to the relevant registers it will speed up things tremendously.