AVR-Chat

AVR-Chat@yahoogroups.com wrote:
> Thank you,
> 
> Is there anything practical I can do? I swapped the power and
> tried batteries but it made no difference. I can read the
> flash ok, and program the EEPROM fine. I don't want to give
> up too early. Any tricks of the trade to coax it to work?
> Overnight in the freezer?
> 

Have a look on avrfreaks.com, there is a long and rather detailed
description of your exact problem at this address (should be all one
line):

<http://www.avrfreaks.net/index.php?name=PNphpBB2&file=printview&t=30231
&start=0&POSTNUKESID=bbbcd31a89f33f93eec6e6d5872e8a0d>

This appears to be a common problem with the butterfly device - sounds
like the lock bits get set inadvertently due to a comms error, which
then prevents AVRProg from programming it - you need to erase and
reprogram it using the ISP connector and an ISP programmer to rescue it.


-- 
Tim Mitchell
tim@sabretechnology.co.uk
http://www.sabretechnology.co.uk