> -----Original Message----- > From: > avr-libc-dev-bounces+eric.weddington=atmel....@nongnu.org > [mailto:avr-libc-dev-bounces+eric.weddington=atmel....@nongnu. > org] On Behalf Of Erik Walthinsen > Sent: Tuesday, January 26, 2010 1:07 PM > To: avr-libc-dev@nongnu.org > Subject: [avr-libc-dev] Adding array access to e.g. PINnCTRL > > > I've tested and would like to propose adding the following structures > where relevant to the ATxMega headers. Other places this might be > useful are the TC.CCx regs (with the obvious caveat of A=0, B=1...), > event control regs, etc. Basically anywhere there's a bit > position or > other number embedded in a sequence of registers. > > /* I/O Ports */ > typedef struct PORT_struct > { > ... > register8_t INTFLAGS; /* Interrupt Flag Register */ > register8_t reserved_0x0D; > register8_t reserved_0x0E; > register8_t reserved_0x0F; > union { > struct { > register8_t PIN0CTRL; /* Pin 0 Control Register */ > register8_t PIN1CTRL; /* Pin 1 Control Register */ > register8_t PIN2CTRL; /* Pin 2 Control Register */ > register8_t PIN3CTRL; /* Pin 3 Control Register */ > register8_t PIN4CTRL; /* Pin 4 Control Register */ > register8_t PIN5CTRL; /* Pin 5 Control Register */ > register8_t PIN6CTRL; /* Pin 6 Control Register */ > register8_t PIN7CTRL; /* Pin 7 Control Register */ > }; > register8_t PINnCTRL[8]; > }; > } PORT_t; > > It's used exactly as one might expect: > > PORTC.PINnCTRL[4] = PORT_INVEN_bm; > > If there's interest in doing this, I can work up a patch for > all of the > xmega parts.
Overall I think this is a good idea, certainly no harm in it. Yes, would you be willing to work up a patch for this for all the xmega devices? But more importantly, I use the avrgcc-header script (found in the /xml subdirectory in the avr-libc source) to automatically generate new header files (also for xmega). Could you attempt to patch that script to add this new feature in? I would be willing to help with advice and direction on that part. Thanks, Eric Weddington _______________________________________________ AVR-libc-dev mailing list AVR-libc-dev@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-libc-dev
