Re: [avr-chat] problems with avrdude and new AVR Studio 4.11

[Ewout Boks]

Thanks,

I thought it would be something like this.

I'll inform Atmel of this problem so they will not confuse the next 
person asking....

Ewout

E. Weddington wrote:
> Ewout Boks wrote:
>
> > Hi everyone,
> >
> > I am having trouble with the new AVR Studio 4.11 . I recently installed
> > it and use it as a back-up to easily program fuses etc on my ATMega32
> > and 64.
> >
> > For everyday programming and target loading to the stk500, I use avrdude
> > from my FreeBSD workstation. This worked fine until I installed AVR
> > Studio 4.11 on my Windows system and connected to the target using the
> > JTAG ICE mkII . This works fine but after having doen that, avrdude
> > isn't able to connect to the stk500 anymore. Reverting to AVRStudio 4.10
> > and  reinstalling the stk500 firmware made avrdude happy again.
>
>
>
> Yes, this is a known issue. Atmel changed their stk500 protocol. When 
> you go to AVR Studio 4.11 and "upgrade" the firmware in your stk500, it 
> no longer works with avrdude. Reinstalling the old stk500 firmware 
> changes the protocol back to the previous version, and then works with 
> avrdude.
>
> The avrdude developers are aware of this issue and they have access to 
> the specification of the new protocol. Some work has been done, but 
> AFAIK it is incomplete.
>
> > Atmel assures me that nothing drastic has changed but from what I see I
> > am not too certain about that.
>
> Whoever told you that doesn't know the whole story and their knowledge 
> base needs to be updated. :-)
>
> Eric

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