Re: [avr-gcc-list] Calling function with hard coded address

[Simon Han]

On Nov 1, 2006, at 12:16 PM, Dave Hansen wrote:

> From: Simon Han <address@hidden>
> [...]
> > To reply my own question.  :-)
> >
> > The problem is that gcc does sign extension to the value.
> > Changing to value less than 0x7fe fixed the problem.
> >
> > Simon
> >
> > On Oct 31, 2006, at 9:30 PM, Simon Han wrote:
> >
> > > Hi all,
> > >
> > >         I am trying to call functions with hard coded address as follow.
> > >
> > > typedef void (*func_type)( void );
> > >
> > > ((func_type) 0x1D400)();
>
> If this is the case, you should also be able to solve the problem  
> by specifying the address as unsigned, e.g.
>
>   ((func_type) 0x1D400U)();
>
> Note the 'U' suffix.  Haven't tried it, though...
>
> Regards,
>
>   -=Dave
Hi Dave,

        I tried both 'U' and 'UL'.  Both cases compiled to the same error.
        BTW, I am using atmega128

Simon



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