Follow-up Comment #4, patch #7464 (project avr-libc):
> There is a problem however with the port bit names though. iom168.h
> (or iomx8.h) names them PA0 PB0 etc, iom168p.h names them PORTA0
> PORTB0 etc. and neither file have the other definition.
All these portpin definitions are supplied from a central include
file named <avr/portpins.h>, in order to not having to duplicate
them in each individual file. I just compiled the following test
code:
#include <avr/io.h>
int
main(void)
{
DDRB = _BV(PB5);
for (;;)
PORTB = _BV(PORTB5);
}
using both, -mmcu=atmega168 and -mmcu=atmega168p. It compiles
without any complaint, and both compilations yield the same code.
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