Update of bug #34278 (project avr-libc):
Status: Need Info => Invalid
Assigned to: None => joerg_wunsch
Open/Closed: Open => Closed
_______________________________________________________
Follow-up Comment #2:
Thanks for the archive, now I finally see the problem. Sorry
for being blind in the first place.
The compiler is correct. The code is:
// Delay in 1/10's of a millisecond
void msleep(INT16U ms)
{ /* This loop does not work with optimization != 0. Therefore we use
avr-libc _delay routines K. Schwichtenberg
INT16S i,j;
for (i = 1; i < ms; i++)
for (j = 1; j < ONETENTH_MS; j++); / * to give 1/10 ms*/
_delay_ms(ms); // Changed K. Schwichtenberg
}
Thus, _delay_ms() is called with "ms" which is a function
parameter. This is not supported (and has never been, but
with the current implementation, you finally get an error
while the code simply didn't do what it was expected to
do before).
A correct (with respect to what the comment above the
function says) implementation would look like:
// Delay in 1/10's of a millisecond
void msleep(INT16U ms)
{
while (ms-- != 0)
_delay_ms(0.1);
}
In addition (and unlike the original comment), optimization
_must_ be turned on for any of the _delay_us/ms functions
to work correctly.
_______________________________________________________
Reply to this item at:
<http://savannah.nongnu.org/bugs/?34278>
_______________________________________________
Message sent via/by Savannah
http://savannah.nongnu.org/
_______________________________________________
AVR-libc-dev mailing list
AVR-libc-dev@nongnu.org
https://lists.nongnu.org/mailman/listinfo/avr-libc-dev
