RE: [avr-gcc-list] Xmega class confusion?

[Weddington, Eric]

> -----Original Message-----
> From: Erik Walthinsen [mailto:address@hidden 
> Sent: Thursday, June 03, 2010 6:08 PM
> To: Weddington, Eric; avr-gcc-list
> Subject: Re: [avr-gcc-list] Xmega class confusion?
> 
> On 06/03/2010 12:44 AM, Weddington, Eric wrote:
> >> I'm going to proceed on my end as if my reading is correct,
> >> and try to reassign all the chips.
> >
> > Please stop. You are very probably incorrect. Please give 
> us more time to respond.
> 
> I proceeded because I must patch in the support for the chip I have 
> soldered to the product development board I have on my desk, which I 
> must get compiling again so I can do my job.  None of the 
> tools list the 
> 192a3 on the board, so I have to update the patch in order to proceed.
> 
> If my reading is deemed to be wrong, I'll adjust my patch before 
> submitting.  Doing so is trivial because it's just a 
> reassignment of the 
> complete selection of chips I have to add, which is roughly 2/3rds of 
> the whole series.  *That's* the hard part.
> 
> Just as another point of reference for the [pending] discussion, 
> avr-libc list the 32d4 as an avrxmega2, while the 32a4 is an 
> avrxmega3. 
>   That implies there's something other than flash/ram size 
> determining 
> which separates chips into one or the other.
> 
> Once this is determined one way or another, I'll submit the resulting 
> code patch, as well as a patch to the using_tools section of the 
> avr-libc documentation to explain what the avrxmegaX classes are in 
> detail.  The patches will also be submitted directly to Ubuntu (and 
> Debian), since they haven't updated their patches one way or another 
> since at least 9.04.

See attached patch. It's an updated "xmega" patch that includes support for 
192a3 as well as other devices.

Also take a look at the comments for avr.c in the patch. There it shows the 
classification of the devices. Those devices that are in an architecture that 
says "> 64K RAM" means the possibility of using external RAM.

And yes this patch will be in the next toolchain release, of course.

Eric

51-gcc-4.4.3-xmega-v13.patch
Description: 51-gcc-4.4.3-xmega-v13.patch