bugAVR Downloader/UploaDEr - Bugs: bug #40145, 6.0.1 - STK500v2 fails on uploads...


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bug #40145: 6.0.1 - STK500v2 fails on uploads to parts with pages greater than 256b

Submitter:  Natan Keddem <nkeddem>
Submitted:  Mon 30 Sep 2013 01:50:11 AM UTC
Category:  None Severity:  3 - Normal
Priority:  5 - Normal Item Group:  None
Status:  None Privacy:  Public
Assigned to:  None Originator Name:  Natan Keddem
Open/Closed:  Open Release:  None
Programmer hardware:  Device type: 

Mon 30 Sep 2013 01:50:11 AM UTC, original submission:  

The function stk500v2_paged_write(and possibly other paged write functions) need the following changes:
1 - Start utilizing the blocksize variable in the .conf file to determine the maximum size of data transmissions.

2 - Perform sanity checks on blocksize to ensure conformance to STK500v2 transfer protocol maximum body specifications.  AVR068 states that the body should not exceed 275b, use this number or the buffer size you choose, which ever is less.

3 - Per AVR068, during a paged write transaction utilizing CMD_PROGRAM_FLASH_ISP  the mode byte will alert the programmer when a page should be written.

AVR068 states:
For paged operation, the Write page bit decides if a Write Program Memory Page command should be issued after the data has been loaded into the page buffer. For devices with page size bigger than what can be transferred to STK500 in one command, several CMD_PROGRAM_FLASH_ISP commands must be issued. In such a case, only the last command should have the Write Page
mode bit set.

Natan Keddem <nkeddem>


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

Attached Files
file #29263:  doc2591.pdf added by nkeddem (158KiB - application/pdf - AVR068 Attached)


Depends on the following items: None found

Items that depend on this one: None found


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  • -email is unavailable- added by nkeddem (Submitted the item)

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    Date Changed by Updated Field Previous Value => Replaced by
    2013-09-30 nkeddem Attached File- Added doc2591.pdf, #29263

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