Re: [avr-gcc-list] Mega329

[E. Weddington]

> -------- Original Message --------
> Subject:     [avr-gcc-list] Mega329
> Date:     Wed, 20 Apr 2005 21:46:30 +1000
> From:     Ron <address@hidden>
> To:     <address@hidden>
>
>
>
> I want to replace the Mega169 currently in use in a product with the
> Mega329. Atmel had said (through their Australian agents) that the '329
> is a direct replacement. After plugging one in I found the pin change
> interrupt I use on PE2 was not working. After much searching I found a
> small note on page 47 of the '329 manual saying the PCINT2 was not
> implemented on the '329. 


That seems to be correct. According to my copy of the datasheet, PCINT2 
is only implemented on the 3290 and 6490.

> This was duly reported to Atmel that it really
> was not a plug-in replacement for the '169. Their reply was I should
> specify the '329 to the compiler (rather than the '169), and give them a
> call when I had tried this.


?
Who at Atmel told you that?

> Problem is, avr-gcc doesn't support or include an iom329.h file yet, and
> even if it did, I can't see how this would compensate for the missing
> PCINT2.


I don't see either. PCINT2 is not implemented for the 329.

> Maybe I'm missing something here. Has anyone else had this problem? If
> the team is looking at supporting the '329 with avr-gcc, could they have
> a look at this apparent discrepancy?
Adding support for the 329 is listed in the Task Manager of avr-libc:
<http://savannah.nongnu.org/task/?func=detailitem&item_id=3594>
AFAIK, no work has been done to add support yet.

Eric