Re: [avrdude-dev] JTAGICEII on CAN128

[Odd Arild Olsen]

I must say that I have had only good experiences with Avrdude hitherto, and am 
very happy that I can use the Jtagice under Linux.

Well, about my CAN128 mishap:

All went fine for, say 25, programming cycles. Then I observed that the 
processor was not reset after programming, I had to do that manually to get 
the program going. Then after yet another dozens of programmings I had no 
more access to the chip. Avrdude suggests that the JTAG fuse is not enabled. 
The program ran though. Till now I programmed under Linux, Avrdude version 
5.0. I then tried to get contact using Avr studio unde Windows, but with no 
success.

I cut out the chip and soldered in a new one. The first or second time I 
programmed I got the same problem with the new chip.

Now I cut out the chip again and soldered a Mega128 in its place. I have now 
programmed under Linux with the same setup  several dozen times without any 
problem.

I'm afraid I can't supply more details to help you, althouhg I quite 
understand your problem with finding such spurious errors.

Regards

OAO

On Sunday 11 June 2006 22:16, Joerg Wunsch wrote:
> As Odd Arild Olsen wrote:
> > I have successfully used avrdude and JTAGICEII to program mega128s
> > over a period. Now I use the CAN128 and suddenly the fuse bits
> > enabling JTAG programming seems to be gone.
>
> Care to explain in more detail?
>
> I've got one other problem report about the CAN128 (on AVaRICE
> though), and recently obtained a CAN128 CPU myself for testing.
> However, the person originally telling me about problems never got
> back to me, and everything I tried myself worked so far (after one
> minor change in the AVaRICE device descriptor setup, but that bit only
> affects flash ROM access, and has always been correct in AVRDUDE).
>
> So if you try to describe something I could reproduce, I'll see
> whether I can help you.