Electronic Consultation wrote:
>=20
> What I'm trying to do is creating 1s interrupt on the background with
> Timer0, I have set Timer0 to B2 and I need a counter for it.
> It's state machine turn on and turn off LED in one second, but the "one
> second" comes from Timer0 interrupt, Do you get what I mean ?

Again, take a look at my tutorials at
http://www.gooligum.com.au/tut_midrange.html, especially lesson 6 which
includes the exact example you're looking for: flashing an LED at 1 Hz,
using a Timer0 interrupt.
That code is for a 4 MHz processor clock while you want 20 MHz, but the
principle is the same and modifying my code to work at 20 MHz would be a
good exercise to ensure that you understand it.

Regards,
David Meiklejohn
www.gooligum.com.au



--=20
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