AVR-Chat

Dennis wrote:
> Nebulous question. If all other interrupt vectors work OK why not this one?

Continue to assume the hardware works! Either the vector you think 
you're using is wrong, or you do something bad in the correct ISR and 
it never returns, or maybe you blow the stack with repeated int calls. 
Surely a bit of diag code can work out what's happening?

Do you know your INT1 ISR gets entered, and via the correct vector?

INT1 is entered how many times per keypress? (hardware has a knack of 
bouncing and producing multiple ints.

..


Peter.