Getting a serial bootloader to work on the 644p has been harder than writing the application code :) I'm using a modified version of Design Note #032 bootloader written in assembly and made a section for the 644P plus fixed some issues with Def file. There is no name on it, but it's dated Oct 07, V3.1. Never could get AVRPROG.exe to work. AVROSP finally worked when I set the BOOTIDSTRING to "AVRBOOT". Where are the 1-byte Device Type codes listed for all the various CPUs? I'm not sure if AVROSP uses this DT or signature bytes to determine what commands to use - anyone know?
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644P bootloader and uploader
2008-09-24 by Roger Arrick