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[avr-libc-dev] Re: [avr-gcc-list] __mmio macro in avr-libc

From: E. Weddington
Subject: [avr-libc-dev] Re: [avr-gcc-list] __mmio macro in avr-libc
Date: Mon, 19 Aug 2002 10:22:48 -0600

On 16 Aug 2002 at 17:00, Geoffrey Wossum wrote:

> Hi all,
> In older avr-libc's (20020203), there was an __mmio macro for using
> non-constant I/O addresses.  This seems to have disappeared in
> avr-libc 20020620/20020630.  Is there another way to do this now?  If
> not, can I just use the iomacros.h from the older avr-libc to
> accomplish this?

In 20020630 / CVS, look in file sfr_defs.h, there are the macros 
_MMIO_BYTE() and _MMIO_WORD(). Support has been added for direct 
assignment to registers (i.e. PORTA  |= 0x20;) and other macros such 
as inp() and outp() have been deprecated.


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