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Re: [avr-chat] AVR Dragon 'noreset' exitspec
From: |
Joerg Wunsch |
Subject: |
Re: [avr-chat] AVR Dragon 'noreset' exitspec |
Date: |
Thu, 19 Jun 2008 21:25:20 +0200 (MET DST) |
"Daniel O'Connor" <address@hidden> wrote:
> Is it possible to tell the Dragon to not reset the target when the
> ISP cable is connected?
You'd have to ask that the people at Atmel. If the /RESET line
defaults to be pulled while no software talks with the Dragon, then it
won't be possible.
The point is, the software driving the Dragon essentially establishes
a session: it has to say "Hello" to the Dragon, only then it can tell
the Dragon about its intentions (i.e., select between JTAG access, ISP
access, HVSP/HVPP access, or debugWire emulation), perform the
required actions, and the Dragon is usually quite upset if you don't
send him a proper "Goodbye" to end the session, so you gotta do that
as well.
So whatever the Dragon is doing /outside/ a session is beyond software
control.
--
cheers, J"org .-.-. --... ...-- -.. . DL8DTL
http://www.sax.de/~joerg/ NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)