Re: [avr-chat] ATmega32 @ 16MHz : fuse bits ??

[Peter Fuhrmann]

On Friday 11 November 2005 04:54, Vincent Trouilliez wrote:

> The best I could figure out for a 16MHz crystal clock source is:
>
> CKOPT = 0
> SU = 11
> CKSEL 3:0 = 1111
>
> If anyone runs successfully an ATmega32 with a 16MHz crystal, what
> settings did you use ?

I use the same settings for CKOPT and CKSELwith a Meag32, and it work fine. 
The SUT Fuses should not matter for the Osciallator.

> So I would be very grateful if someone could tell me what's wrong in my
> clock bits, and also, if anyone in France or nearby (Joerg ?! ;-), has
> the facility to get the fuses back with parallel mode programming, I
> would be soooo happy.

There mgith be another chance: I guess Your Atmega just doesnt like your 
Chrystal, so you could try using anotherone, maybe from some old hardware 
that you've got flying around anyway. Or you Programm a second Atmel to 
generate a 100kHz clock or something, and inject it to the XTAL1 pin of the 
not working Atmel.
I was often able to rescue mine that way, when they were in some strange 
setting(yes, connecting other chips to the SPI, and then forgetting a pullup 
on the CS line is not a goog idea....). You might need to tell your 
programming software to be slower than normal then, but I think you know how 
to do that.

Regards, Peter