On Dec 19, 2007 2:39 PM, Stu Bell <[EMAIL PROTECTED]> wrote: > > The bit-field approach solves my primary complaint by not needing any > > accessor functions. Both if (my_flag) and my_flag = true; work as > > expected. As for the declaration, perhaps #define my_flag > > (GPIOR0_BIT.bit0) would be sufficient, where GPIOR0_BIT is defined > > by avr-libc as > > > > #define GPIOR0_BIT (*(volatile BitRegisterType > *)_SFR_MEM_ADDR(GPIOR0)) > > I think you need the pointer dereference (GPIOR0_BIT->bit0) instead of > the member dereference (GPIOR0_BIT.bit0). Otherwise, what you suggest > is a pretty good idea.
I did the pointer dereference in the GPIOR0_BIT macro to match the usual avr-libc style. GPIOR0, for example, is not a pointer but an lvalue. Cheers, Shaun _______________________________________________ AVR-libc-dev mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/avr-libc-dev
