[avrdude-dev] [patch #7559] 'arduino' programmer type DTR transition fix

[Robert Spitzenpfeil]

URL:
  <http://savannah.nongnu.org/patch/?7559>

                 Summary: 'arduino' programmer type DTR transition fix
                 Project: AVR Downloader/UploaDEr
            Submitted by: madworm
            Submitted on: Mon 20 Jun 2011 06:19:17 PM GMT
                Category: None
                Priority: 5 - Normal
                  Status: None
                 Privacy: Public
             Assigned to: None
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any

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Details:

It came to my attention that I could only upload every 2nd try to my
bootloaded AVR chip (or 'Arduino' if you like). The first pass would fail and
I would abort avrdude (the chip was _not_ reset). With the old code this left
the DTR line in a usable state for the next run, which then succeeded
reproducibly.

This patch reverses the sequence of setting/clearing DTR/RTS. In depth
explanation including a small schematic are in the comment in the .diff file.



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File Attachments:


-------------------------------------------------------
Date: Mon 20 Jun 2011 06:19:17 PM GMT  Name: arduino.c.patch  Size: 2kB   By:
madworm
Arduino 'auto-reset' fix.
<http://savannah.nongnu.org/patch/download.php?file_id=23541>

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