Re: [avr-gcc-list] winavr problem

[Steven Michalske]

I feel that the problem he is seeing is that he is trying to change  
that global and gcc is optimizing it away

try

volatile uint8_t var_a;

setting it to zero at the beginning is not required and not helpful.
see
http://www.nongnu.org/avr-libc/user-manual/FAQ.html#faq_varinit

As for future issues, a code snippet always helps.
code crosses all language barriers.

Steve


On Sep 13, 2007, at 2:26 PM, Eric Weddington wrote:

> > -----Original Message-----
> > From:
> > address@hidden
> > [mailto:address@hidden
> > org] On Behalf Of ali soulla
> > Sent: Tuesday, September 11, 2007 2:25 PM
> > To: address@hidden
> > Subject: [avr-gcc-list] winavr problem
> >
> > hi
> > i want to do a project in winavr by ATmeag128 i see a bad bug
> > that confused me .
> > when i set my global var in start of code to zero (var_a = 0;)
> > for example after #includes
> > my code does not work correct and some variable that use var_a
> > give a constant value and i can not change  them
> > i run that code on ATmega32 and there was any problem
> > please suggest me what to do
> > thanks
>
> You need to post your code so we can understand what you are  
> referring to.
>
>
>
>
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