Re: [avr-chat] avrdude : chip not responding

[Rolf Magnus]

On Wednesday 31 August 2005 14:34, Vincent Trouilliez wrote:

> Just tried with UISP.
> Basically same problem as with avrdude. It doesn't report any error when
> asked to wirte to the AVR, but when I read back, nothing has been
> written. When I asked uisp to erase the chip, it sent a quick command
> (very brief activity on the SPI... I have my scope glued to the MISO
> line now ;-), reported no errors, but when I read the entire flash
> memory, it had the same weird content as first seen with avrdude, that
> is, a strange bit pattern instead of just 'FF' everywhere.

It looks to me as if you actually don't have a connection to the 
microcontroller. I can read from it even if none is connected at all.

> Only positive sign, is that UISP reports my fuse bits as follows, unlike
> avrdude (I am starting to feel that I misunderstood the meaning of that
> 'part' command, maybe it just prints the info from the avrdude.conf
> file ?!)
>
> $ sudo uisp -dprog=bsd -dpart=ATmega32 --rd_fuses
>
> Atmel AVR ATmega32 is found.

Did you try without -dpart? Even without anything connected at all, uisp tells 
me it found the chip I specified. Wihout -dpart, it should auto-detect the 
chip.