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[avrdude-dev] [patch #7165] Add support for bitbanging GPIO lines using


From: Radoslav Kolev
Subject: [avrdude-dev] [patch #7165] Add support for bitbanging GPIO lines using the Linux sysf GPIO interface
Date: Mon, 12 Apr 2010 14:30:26 +0000
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.3) Gecko/2008092510 Ubuntu/8.04 (hardy) Firefox/3.0.3

URL:
  <http://savannah.nongnu.org/patch/?7165>

                 Summary: Add support for bitbanging GPIO lines using the
Linux sysf GPIO interface
                 Project: AVR Downloader/UploaDEr
            Submitted by: radolin
            Submitted on: Mon 12 Apr 2010 02:30:25 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:

This patch adds support for a new programmer type - gpio. It uses the Linux
sysfs interface to bitbang GPIO lines. Mostly useful in embedded Linux
systems, where there are a lot of GPIOs available.

To enable it pass the --enable-gpio option to ./configure. Then set the
appropriate GPIO numbers in avrdude.conf.

It is kind of slow, taking ~30s to upload 8K to flash on a 150MHz x86 system.
It will be a lot faster writing directly to the CPU registers, but this way it
works for all processors that have Linux GPIO support implemented.



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File Attachments:


-------------------------------------------------------
Date: Mon 12 Apr 2010 02:30:26 PM GMT  Name: avrdude-5.10-bb-gpio.patch 
Size: 11kB   By: radolin
Add support for bitbanging GPIO lines using the Linux sysf
<http://savannah.nongnu.org/patch/download.php?file_id=20204>

    _______________________________________________________

Reply to this item at:

  <http://savannah.nongnu.org/patch/?7165>

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