Re: [avr-gcc-list] Inline assembler question

[Iztok Zupet]

On Tuesday 17 June 2003 00:00, Marko Panger wrote:
> Hi all,
>
> My nervous are satrting to, because I am unable to load and address of a
> global defined variable in the inline assembler. I would like to do
> something like that:
>
> Global var:
>
> uint8 myVar;
>
> later...in a function..
> -------------------------
>
> asm volatile "ldi r22, %A1 \n" \
>                                       "ldi r23, %B1 \n" \
>
>                                       ::"m"(myVar));
>
> But the thing doesn't want to know to copile. I must be doing something
> wrong with the variable constraint and I would ask if someone knows how to
> solve this.

Dont use the Load Imediate instruction, rather use the lds. It's as simple as 
:

        asm volatile "lds r23,myVar\n"

Regards
Iztok