bugAVR Downloader/UploaDEr - Bugs: bug #34271, avrdude only writes the eeprom in...


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bug #34271: avrdude only writes the eeprom in 8-byte steps (stk500v2)

Submitter:  None
Submitted:  Sun 11 Sep 2011 10:25:24 PM UTC
Category:  None Severity:  3 - Normal
Priority:  5 - Normal Item Group:  None
Status:  Need Info Privacy:  Public
Assigned to:  None Originator Name:  Niko D
Originator Email:  -email is unavailable- Open/Closed:  Open
Release:  None Programmer hardware: 
Device type: 

Wed 11 Sep 2013 04:38:08 PM UTC, comment #1: 

Please try this again with a recent version, preferrably
either SVN or 6.0rc1.

If it still fails, please submit a full -vvvv log as an

Joerg Wunsch <joerg_wunsch>
Group administrator
Sun 11 Sep 2011 10:25:24 PM UTC, original submission:  

When uploading eeprom data to an at90can32 over ISP (STK500v2 bootloader), avrdude only transfers data correctly if the size is a multiple of 8.

If the data size is e.g. 12, only the first 8 bytes are transferred. No problems occur when transferring 8bytes or 16bytes. I verified that this is not a problem with my application code by running the command in verbose mode, where it is clearly visible that avrdude sends 8 as the size if 8 < size <16.

My setup:
at90can32 with a modified version of Peter Fleury's STK500V2 bootloader
avrdude v5.11 (latest).
I also tried it with an older version, 5.8cvs, yielding the same result.



(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

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