bugAVR Downloader/UploaDEr - Bugs: bug #28611, -i delay not being applied to all...

 
 

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bug #28611: -i delay not being applied to all serial port bit banging state transitions

Submitter:  None
Submitted:  Fri 15 Jan 2010 02:37:53 PM UTC
   
 
Category:  None Severity:  3 - Normal
Priority:  5 - Normal Item Group:  None
Status:  Fixed Privacy:  Public
Assigned to:  joerg_wunsch Originator Name:  Soren Jorvang
Originator Email:  -email is unavailable- Open/Closed:  Closed
Release:  None Programmer hardware: 
Device type: 

Fri 15 Jan 2010 02:37:53 PM UTC, original submission:  

Getting started with AVR's, I wanted to bootstrap myself with a simple serial port bit-banging programmer despite having only USB serial (Prolific 2303) adapters available.

That didn't work, but only because the -i delay wasn't being applied to all pin state transitions.

With this patch and the osx-pl2303 driver (the one from prolific.com.tw doesn't allow bit banging at all), communication starts working at -i 1000 and is reliable at -i 5000.

This gives a flash write rate of no more than 2 bytes/s, but that's acceptable for the occasional initialization of a fancier programmer or a boot loader.

Anonymous

 

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Attached Files
file #19494:  avrdude.diff added by None (1KiB - application/octet-stream - Patch to apply -i delay to all serbb state transitions)

 

Depends on the following items: None found

Items that depend on this one: None found

 

Carbon-Copy List
  • -email is unavailable- added by joerg_wunsch (Updated the item)
  • -email is unavailable- added by None (Submitted the item)
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    Follow 4 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2010-01-15 joerg_wunsch StatusNone Fixed
        Assigned toNone joerg_wunsch
        Open/ClosedOpen Closed
    2010-01-15 None Attached File- Added avrdude.diff, #19494

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