[avrdude-dev] [bug #51320] 0x00 written as 0xFF when byte count is less than 0x10

[anonymous]

URL:
  <http://savannah.nongnu.org/bugs/?51320>

                 Summary: 0x00 written as 0xFF when byte count is less than
0x10
                 Project: AVR Downloader/UploaDEr
            Submitted by: None
            Submitted on: Mon 26 Jun 2017 08:13:10 PM UTC
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: Mike Brandon
        Originator Email: address@hidden
             Open/Closed: Open
                 Release: 6.3
         Discussion Lock: Any
     Programmer hardware: linuxgpio
             Device type: m2650

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Details:

I have two different .hex files (unfortunately I am unable to share entire
.hex files as I do not own them). Both write and verify fine when using AVR
Studio and an AVRISP programmer.

When using avrdude with linuxgpio, the write process completes but the
verification process returns an error. In both files it occurs on lines of the
.hex file where the data byte count is less than 0x10 (this is the only common
theme I have been able to identify). When I look at the specific address
mentioned by avrdude for the verification error, the original data that SHOULD
have been written was 0x00. The data that WAS written was 0xFF.

The attached files only pertain to one of the hex files I have experienced
this with.



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File Attachments:


-------------------------------------------------------
Date: Mon 26 Jun 2017 08:13:10 PM UTC  Name: 0x40ca-data.PNG  Size: 13kB   By:
None
0x40ca-data shows the original data that should be writte. 0x40ca-read shows
the data that was read after flashing.
<http://savannah.nongnu.org/bugs/download.php?file_id=41052>
-------------------------------------------------------
Date: Mon 26 Jun 2017 08:13:10 PM UTC  Name: avrdude-write-read.PNG  Size:
95kB   By: None
0x40ca-data shows the original data that should be writte. 0x40ca-read shows
the data that was read after flashing.
<http://savannah.nongnu.org/bugs/download.php?file_id=41053>
-------------------------------------------------------
Date: Mon 26 Jun 2017 08:13:10 PM UTC  Name: 0x40ca-read.PNG  Size: 23kB   By:
None
0x40ca-data shows the original data that should be writte. 0x40ca-read shows
the data that was read after flashing.
<http://savannah.nongnu.org/bugs/download.php?file_id=41054>

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