[Noisebridge-discuss] arduino fuses: how to modify easily?

[Ryan Castellucci]

On Wed, Nov 10, 2010 at 6:04 PM, Josh Myer <josh at joshisanerd.com> wrote:

> You can dump them to get absolutely known values; the below is taken from
> one of ladyada's Makefiles:
>
> read-fuse:
>         $(AVRDUDE) $(AVRDUDE_FLAGS) -u -U lfuse:r:l.txt:r
>         $(AVRDUDE) $(AVRDUDE_FLAGS) -u -U hfuse:r:h.txt:r
>         $(AVRDUDE) $(AVRDUDE_FLAGS) -u -U efuse:r:e.txt:r
>
> It's also specified in the boards.txt file.  The three that matter:
>
> ./arduino/boards.txt:uno.bootloader.low_fuses=0xff
> ./arduino/boards.txt:uno.bootloader.high_fuses=0xde
> ./arduino/boards.txt:uno.bootloader.extended_fuses=0x05
>
> ./arduino/boards.txt:atmega328.bootloader.low_fuses=0xFF
> ./arduino/boards.txt:atmega328.bootloader.high_fuses=0xDA
> ./arduino/boards.txt:atmega328.bootloader.extended_fuses=0x05
>
> ./arduino/boards.txt:atmega168.bootloader.high_fuses=0xdd
> ./arduino/boards.txt:atmega168.bootloader.extended_fuses=0x00
> ./arduino/boards.txt:atmega8.bootloader.low_fuses=0xdf
>

There are numerous web pages that will generate fuse settings for you...
here's one that I found searching google for 'avr fuse calculator'

http://frank.circleofcurrent.com/fusecalc/fusecalc.php

-- 
Ryan Castellucci http://ryanc.org/
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