Hello, I need to sample audio for my spectrum analyazer. For now i'm sampling my data in de loop routine with the following code: for (i = 0; i < 128; i++) { val = analogRead(A5); data[i] = val/4; im[i] = 0; } what i'm trying to achieve is to sample in an interrupt routine. I already …

Sampling audio with interrupt

system April 3, 2014, 6:44pm 2

A 100us delay in an interrupt routine doesn't seem a great idea to me.
Break up analogRead into its components.

You don't exchange any data - it's global.

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