[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [avr-gcc-list] Newbie - should this work?

From: Christoph Plattner
Subject: Re: [avr-gcc-list] Newbie - should this work?
Date: Wed, 22 Jan 2003 20:03:56 +0100
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.1) Gecko/20020830

Ok, that's new.
One furhter question. What's the reason for the change ?
Is there any optimazation in it ?

Otherwise, it is not my preferred method "hiding" functionality
too much into macros - especially in this example of primitive
I am "POSIX fan", and one reason is the easy readablilty of code,
and not so complicated macro-hacks ...


Artur Lipowski wrote:
-----Original Message-----
From: address@hidden
[mailto:address@hidden Behalf Of Christoph Plattner
Sent: Monday, January 20, 2003 12:24 AM
To: Volkmar Dierkes
Cc: address@hidden
Subject: Re: [avr-gcc-list] Newbie - should this work?

sorry, but I cannot understad this !


So this is the reason, why I cannot understand, that this code
works. Or is the io.h completely written in another way.
I cannot see a way per include files to get a

                PORTD = 0x00;

to a

                outp (0x00, 0x12);

It is compiler part of work.
Remember also that IO space can be accessed like normal data memory (with

BTW from avr-libc documentation, deprecated list section:
"Global outp(val, sfr)
For backwards compatibility only. This macro will eventually be removed"

Artur Lipowski

private:        address@hidden
company:        address@hidden

avr-gcc-list at http://avr1.org

reply via email to

[Prev in Thread] Current Thread [Next in Thread]