[avrdude-dev] [bug #29896] Add support for XMEGA specific AVR109 protocol extensions used by XBoot

[Alex Forencich]

URL:
  <http://savannah.nongnu.org/bugs/?29896>

                 Summary: Add support for XMEGA specific AVR109 protocol
extensions used by XBoot
                 Project: AVR Downloader/UploaDEr
            Submitted by: aforencich
            Submitted on: Sun 16 May 2010 07:42:50 PM GMT
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: Alex Forencich
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any

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Details:

The AVR109 butterfly protocol does not support access to the user signature
row and the production signature row on XMega devices.  The XBoot bootloader
adds support for these locations by adding the memory types "U" and "P" in
addition to the existing "E" and "F" types.  

Updating AVRDUDE to support this would be trivial - it involves adding a
couple of additional conditions to the block read and write fuctions in
butterfly.c.  The only question is whether or not to add them universally and
check for error conditions or to only support them for specific bootloaders. 







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