AVR-Chat

However, if two or more occur (of the same vector) you will lose
information.  With quadrature you need to insure your interrupt latency
(i.e. duration that interrupts are disabled) is less than your minimum time
between quadrature interrupts.  2000/sec is very slow, however.  I routinely
work with 40-100k/sec on an 8mhz mega16 processor.  It isn't easy, but it
can be done.

Cheers!

-----Original Message-----
From: Richard Reeves

> I assume  they are turned off, but I am
> wondering if an interrupt occurs while in the routine,
> is it saved and executed latter, upon exit?
Yes, the interrupt flags are set while you're in an ISR, and executed
in the order that they appear in the interrupt vector table once the
MCU is able to.