On Fri, 2005-05-13 at 10:31 +0100, Michael Rigby-Jones wrote:
> 
> >-----Original Message-----
> >From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] 
> >Sent: 13 May 2005 10:15
> >To: Microcontroller discussion list - Public.
> >Subject: Re: [PIC] strange problem
> >
> >
> >
> >> while(B0!=1);
> >
> >What is connected to the other 7 bits of PORTB ?  Since your 
> >setting in TRISB makes them all inputs, unless they are all 
> >wired to 0v then the above loop will NOT wait for you to press 
> >the button.
> >
> >You probably want to test just the bottom bit like this ...
> > 
> >	while((B0 & 1) == 0) ;
> >
> >Peter
> 
> I'm not familiar with the compiler (CCS?), but the syntax suggests that
> the original code is a bit test on RB0 and therefore quite valid.

Ah , right I see now that "B0" means bit zero of PORTB.  Not ANSI C
then !

Peter


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