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Re: INTO interrupt firing all the time?

2007-12-17 by Richard Cooke

Hi,

This is why it is so frustrating.  I just re-measured the ground
connection and according to my ohmmeter it is indeed grounded.

And using the debugger it stops on the interrupt:

"interrupt (EXT_INT0) void ext_int0_isr(void)"  The ATtiny.h file
lists EXT_INT0 as = 2 which is what the datasheet shows.

BTW I'm using the CodeVisionAVR C Compiler.

Thanks,

Richard Cooke




--- In AVR-Chat@yahoogroups.com, "Dennis Clark" <dlc@...> wrote:
>
>   It can't fire if it is grounded.  If it IS firing then one of your
> assumptions is incorrect:
> 
> A- You are actually attached to ground
> B- That INT0 is actually what is firing
> 
>   So, disable the interrupt and see if the problem goes away - If it
does
> then assumption A needs to be examined.  If it does not then clearly
> assumption B needs to be examined.
> 
> DLC

>

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