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

Submitted by:  None
Submitted on:  Fri 15 Jan 2010 02:37:53 PM UTC  
 
Category: NoneSeverity: 3 - Normal
Priority: 5 - NormalItem Group: None
Status: FixedPrivacy: Public
Assigned to: Joerg Wunsch <joerg_wunsch>Originator Name: Soren Jorvang
Originator Email: -unavailable-Open/Closed: Closed
Release: NoneProgrammer 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

 

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
  • -unavailable- added by joerg_wunsch (Updated the item)
  • -unavailable- added by None (Submitted the item)
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    Follow 4 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Fri 15 Jan 2010 09:24:39 PM UTCjoerg_wunschStatusNone=>Fixed
      Assigned toNone=>joerg_wunsch
      Open/ClosedOpen=>Closed
    Fri 15 Jan 2010 02:37:53 PM UTCNoneAttached File-=>Added avrdude.diff, #19494

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