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[avrdude-dev] [bug #7383] Hardware shortcut using KANDA STK200 compatibl


From: Joerg Wunsch
Subject: [avrdude-dev] [bug #7383] Hardware shortcut using KANDA STK200 compatible ISP cable
Date: Sat, 17 Sep 2005 21:26:26 +0200
User-agent: Mozilla/5.0 Galeon/1.2.13 (X11; FreeBSD i386; U;) Gecko/0

Update of bug #7383 (project avrdude):

                  Status:                    None => Wont Fix               
             Assigned to:                    None => joerg_wunsch           
         Originator Name:                         => Lore                   
        Originator Email:                         => address@hidden      
             Open/Closed:                    Open => Closed                 

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Follow-up Comment #1:

The logic in par.c is set to immediately drive the /RESET
line as soon as the buffer's /CS is activated, so the window
where the buffer could potentially drive two active outputs
against each other is in the range of nanoseconds which
should be bearable (the worst effect is probably a spike in
the power supply).  Further, if you use MISO/MOSI for regular
IO that might conflict with ISP, it's always recommended to
have some small series resistors in these lines.

As the originator left no email address or other option to
get in contact with him, left no patch implementing a
suggested solution to the alleged problem, and rearranging
the code would be quite a bit of work, I'm closing this bug
as a "won't fix".

    _______________________________________________________

Reply to this item at:

  <http://savannah.nongnu.org/bugs/?func=detailitem&item_id=7383>

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