Re: [avr-gcc-list] possible compiler bug?

[Brian Dean]

On Wed, Aug 28, 2002 at 05:55:28PM -0700, Theodore A. Roth wrote:
> 
> I've yet to see a case where the compiler didn't do the high byte first
> for a 16bit register access. I could be wrong though.

In the message you replied to, see the set_pwm() function:

        void set_pwm(volatile uint16_t * pwmreg, uint16_t pwm)
        {
          *pwmreg = pwm;
        }

Results in:

        set_pwm:
                movw r30,r24
                st Z,r22
                std Z+1,r23
                ret

Low byte first, followed by high byte.

-Brian
avr-gcc-list at http://avr1.org