RE: [avr-gcc-list] port access with avr-gdb

[Dave Hylands]

Hi Brian,

Pretty much. You would either write:

    tccr3a &= ~(BV(WGM31) | BV(WGM30) | BV(COM3A1));
    tccr3a |= BV(COM3A0);

Or

    tccr3abits.wgm31 = 0;
    tccr3abits.wgm30 = 0;
    tccr3abits.com3a1 = 0;
    tccr3abits.com3a0 = 1;

Just subtley different from what you wrote.

--
Dave Hylands
Vancouver, BC, Canada
http://www.DaveHylands.com/ 

> -----Original Message-----
> From: Brian Dean [mailto:address@hidden 
> Sent: Sunday, June 20, 2004 5:49 PM
> To: Dave Hylands
> Cc: Ned Konz; address@hidden
> Subject: Re: [avr-gcc-list] port access with avr-gdb
> 
> 
> On Fri, Jun 18, 2004 at 01:02:03PM -0700, Dave Hylands wrote:
> 
> > I like it!
> > 
> > The really nice thing about this approach is that you 
> should be able 
> > to see the symbolic names of the registers when you 
> disassemble your 
> > object files.
> 
> Does this mean that the following initialization that looks like this:
> 
>   TCCR3A &= ~(BV(WGM31) | BV(WGM30) | BV(COM3A1));
>   TCCR3A |= BV(COM3A0);
>   TCCR3B &= ~(BV(WGM33) | BV(WGM32) | BV(CS32) | BV(CS30));
>   TCCR3B |= BV(CS31);
> 
> Might instead be written like this:
> 
>   tccr3a.wgm31  = 0;
>   tccr3a.wgm30  = 0;
>   tccr3a.com3a1 = 0;
>   tccr3a.com3a0 = 1;
>   tccr3b.wgm33  = 0;
>   tccr3b.wgm32  = 0;
>   tccr3b.cs32   = 0;
>   tccr3b.cs30   = 0;
>   tccr3b.cs31   = 1;
> 
> ???
> 
> -Brian
> 
>