Re: [avr-gcc-list] volatile...

[Galen Seitz]

One more suggestion...

If you are using global volatiles shared between an interrupt and 
mainline code, interrupt handler performance may be improved by moving 
the volatile into a temporary variable.

galen


volatile uint16_t counter;

SIGNAL(TMR0_OVERFLOW)
{
    uint16_t tmp;

    tmp = counter;
    tmp++;
    if (tmp == 100)
        tmp = 0;
    counter = tmp;
}