Re: [avr-gcc-list] external interrupt sample code

[Joerg Wolf]

The line

DDRD &= BV(PD0);

should be

DDRD &= ~BV(PD0);

correct ?


Brian Dean wrote:

> On Wed, Apr 14, 2004 at 10:02:42PM -0600, E. Weddington wrote:
>
>  
>
> > EICRA = BV(ISC01);
> > EIMSK = BV(INT0);
> >    
>
> Also, make sure the pin listening for the interrupt is configured as
> an input pin:
>
>         DDRD &= BV(PD0);
>
> If you want the pull-up enabled, write a '1' to the PORT bit:
>
>         PORTD |= BV(PD0);
>
> -Brian
>
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