wulfden::theshoppe::freeduino::adabootloader

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Totally Open Arduino-Compatible Hardware Development

This web page was last updated on Sun, 10 Feb 08 at 1916 hours

The name "Arduino" is a trademark of the Arduino team. The Arduino team has expressed the desire that the name "Arduino" should be used to refer only to products created and supported by the Arduino team; see the Arduino website for more information.
Many alternatively produced Arduino items are being created under the name Freeduino. The Wulfden and Modern Device products listed below are offered as Arduino compatible items. They are not specifically authorised Arduino products and are not supported or endorsed by the Arduino team.
For more information on the Arduino project, the Freeduino movement within the Arduino world, go to the Freeduino Universe web page.

ADABOOT - an atmega168 bootloader

Since 10/1/2007, all Wulfden Freeduino Kits have been shipping with ADABOOT - an Arduino(R) compatible bootloader based upon the Arduino bootloader. "Lady Ada", Limor Fried, of Adafruit Industries, made numerous corrections and additions to bring us what amounts to being a universal bootloader. It is useable on old, new and homebrew platforms with or without auto-reset capabilities of Arduino-0009 and the Diecimilia (R).

based upon the ATmega168 version of the Arduino NG(R) bootloader v1.16
Further information on the nature of many of the bootloader code changes are on Lady Ada's website
Download - the latest complete source, make, and hex are available here. This file last updated on Fri, 05 Oct 07 at 0916 hours. NOTE - this code contains mods I made that includes an unpublished hack by Limor for upload progress and my hack for ADABOOT version indication, both assuming an LED on Digital 13. and neither of which are in the code Lady Ada posted on her website
Comparison chart of the three primary bootloaders below

bootloader	NG	*Diecimilia*	*ADABOOT*
power up	enter bootloader,10 second timeout to sketch	direct to sketch	direct to sketch
manual or auto reset	enter bootloader, 10 second timeout to sketch	enter bootloader, almost direct to sketch	enter bootloader, 10 second timeout to sketch
on completion of sketch upload	enter bootloader, 10 second timeout to sketch	direct to sketch	direct to sketch
abort bootloader	send "ZZZZZ"	send "ZZZZZ"	send any character other than '0'
upload progress	hardware on TX/RX lines	hardware on TX/RX lines	put LED on Digital 13
Digital 13 signature	3 very fast blinks at start of bootloader mode	single blink evey two seconds	pause, then 4 blinks, pause, then blinks to indicate ADABOOT version, at start of bootloader mode