Le Jeudi 22 Mars 2007 10:01, Vineet Golchha a écrit :
> Aujourd'hui 10:01:43
>
> Hi there,
> My concern is this.
> For example:
>
>
> TR0 = 0; // reset the timer
> while( TR0 == 0 ); // wait for the flag to be set.
> i++; // get out of the loop and increment
> }
>
> What is SDCC going to do in this case.
> Will it say that line corr. to "i++" as unreachable code.
Probably.
TR0 = 0; does not RESET the timer, it STOPS the timer.
Nothing will retart it once you're in the loop.
You may want to wait for an interrupt from the timer-counter.
So
TR0=1;
// tell how the interrupt will be triggered
TF0=0; // reset the overflow interrupt flag
// then
while( TF0 == 0 ); // wait for the INTERRUPT flag to be set by some
// cause outside the loop
>
> But how does the compiler know that?
>
> Regards,
> Vineet.
--
Never jump into a loop!
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