Check the <pic.h> files to see how they do this things with ports and registers.

Francisco


Andy David wrote:

> > struct {
> >  unsigned notify : 1;
> >  unsigned valid : 1;
> >  unsigned finish : 1;
> >  unsigned demo : 1;
> >  unsigned alert : 1;
> >  unsigned encourage : 1;
> >  unsigned exercise : 1;
> >  unsigned grace : 1;
> >  } flags;
>
>         [...]
>
> > The compiler can't generate code for :   pointer = &flags.notify;
>
>         John,
>
>         (I should preface this by saying I'm not familiar with the
>         compile you're using.)
>
>         your structure of bit definitions is ok (although I think you
>         should consider using "unsigned int <name> :1" rather than
>         just "unsigned <name> :1"), but you can't have a pointer to
>         a bit (K&R page 150).
>
>         Also, seems to me a bit odd to use a switch to test a variable
>         that can only have 2 states -- maybe 'if' is more appropriate.
>         I think an 'if' would be about as efficient as you can get.
>
> - Andy.
> ----------------------------------------------
> Andrew David, Software Manager, Ultronics Ltd
> http://www.Ultronics.com
>
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