Re: [avrdude-dev] writing two Fuse Bytes faild

[Joerg Wunsch]

As Markus Burrer wrote:

> If I repeat the same command, both fuse bytes are written
> successfull.  What's wrong here? (I'm using Ubuntu Linux)

I suspect this is due to the latching of fuse byte changes.
All fuse changes affecting oscillator options are latched
internally, and deferred until after the current ISP session
has terminated.  That way, one ISP session always operates
with the same CPU clock source.

All AVRDUDE -U options are handled within a single ISP session.
Running a separate command, of course, initiates a new session.

-- 
cheers, J"org               .-.-.   --... ...--   -.. .  DL8DTL

http://www.sax.de/~joerg/                        NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)