PaulS,
I'm going to try to generate an LTC data stream for starters then modify it for my purposes.
I'll have a look for avrdump in the morning.
Just to clarify, any serial prints will be done occasionally outside the ISR. I was wondering if it uses interrupts, Timer1 (or any other) and how it might affect my ISR. and vice versa.
Where does one find out about this stuff?
All pointers appreciated.