Re: avrdude and fuse programming

Thanks for the info, Joerg.

BTW, is there anywhere that the terminal commands for
avrdude are documented?  Are the commands provided by
avrdude, or the avr itself?

Just curious...
-Matt

--- Joerg Wunsch <[email protected]> wrote:
> Matt Everett <[email protected]> wrote:
> 
> > Does anyone out there use avrdude and know how to
> properly program
> > fuses with it?  I can load my programs to my
> atmega32 just fine
> > (using a dt006 type programming cable), but my
> clock options are
> > stuck with the 1MHz internal oscillator until I
> can figure out how
> > to reprogram the fuse bits!
> 
> You program them as any other memory range.  The
> simplest method by
> now would be »terminal mode«:
> 
> avrdude ... -t
> avrdude> d lf
> 
> Should tell you 0xe1, which is the default for the
> fuse low byte.
> Setting this to 0xef should be for you, see the
> datasheet:
> 
> avrdude> w lf 0 0xef
> 
> avrdude> d hf
> 
> The fuse high byte, ought to be 0x99 by default. 
> Set it to 0x89 in
> order to set the CKOPT fuse (which is used for
> crystals > 1 MHz):
> 
> avrdude> w hf 0 0x89
> avrdude> q
> 
> -- 
> J"org Wunsch					       Unix support engineer
> [email protected]       
> http://www.interface-systems.de/~j/
> 
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