[avrdude-dev] [bug #43577] Extended address not sent with avr109

[anonymous]

URL:
  <http://savannah.nongnu.org/bugs/?43577>

                 Summary: Extended address not sent with avr109
                 Project: AVR Downloader/UploaDEr
            Submitted by: None
            Submitted on: Tue 11 Nov 2014 02:14:43 PM UTC
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: Arne Rossius
        Originator Email: address@hidden
             Open/Closed: Open
         Discussion Lock: Any

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Details:

When programming the ATxmega256a3 with avrdude 6.1 (windows version), the
extended address is not sent when jumping across a 128 KiB boundary. I have
created a text hexfile which only contains data for flash pages 0 (word
address 0x00000) and 511 (word address 0x1FF00). However as can be seen from
the attached log, after programming the first page only a 16-bit address
command ('A') is sent instead of the 24-bit address command ('H'), resulting
in an address of 0x0FF00 instead of 0x1FF00. Verify doesn't fail because the
same happens when reading, but does fail when programming an actual
application (without a gap) larger than 128 KiB. 

The programmer is the "xboot" bootloader
<https://github.com/alexforencich/xboot/wiki>. The avrdude.conf is unchanged.


Programming the attached hex file does work with the older avrdude 5.11
because this version programs pages 1 to 510 with 0xFF, only sending the
address once before the first page and then relying on the bootloader's
auto-increment to reach the high addresses. As can be expected, it takes a
very long time though.

Also, as can be seen from the xboot source, it resets the extended address
byte to zero when receiving an 'A' command. I'm not sure if this behaviour is
correct, but if it is, this means that avrdude must send an 'H' command for
all flash pages above 128 KiB (unless no address is sent at all between
adjacent pages). 



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File Attachments:


-------------------------------------------------------
Date: Tue 11 Nov 2014 02:14:44 PM UTC  Name: napftest.hex  Size: 3kB   By:
None

<http://savannah.nongnu.org/bugs/download.php?file_id=32418>

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