bugAVR Downloader/UploaDEr - Bugs: bug #28520, Programming with USBasp with low...

 
 

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bug #28520: Programming with USBasp with low clock speed fails

Submitter:  None
Submitted:  Fri 08 Jan 2010 09:45:45 AM UTC
   
 
Category:  None Severity:  3 - Normal
Priority:  5 - Normal Item Group:  None
Status:  Fixed Privacy:  Public
Assigned to:  fischl Originator Name:  B. Michler
Originator Email:  -email is unavailable- Open/Closed:  Closed
Release:  None Programmer hardware: 
Device type: 

Fri 08 Jan 2010 06:36:13 PM UTC, comment #1: 

Fixed: Change blocksize depending on sck frequency to avoid usb transmition timeouts.

Thomas Fischl <fischl>
Group Member
Fri 08 Jan 2010 09:45:45 AM UTC, original submission:  

Since patch #6484 it is possible to set the ISP clock speed for USBasp.
But programming or reading with low frequencies (-B 1000, -B 2000 respectively 1kHz or 0.5kHz) fails due to USB timeout.
The timeout is currently fixed at 5000ms.
The problem might be solved by setting the timeout dynamically, depending on the clock speed (and buffer size), e.g. like it is done for USBtiny.

Anonymous

 

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Carbon-Copy List
  • -email is unavailable- added by fischl (Posted a comment)
  • -email is unavailable- added by joerg_wunsch (Updated the item)
  • -email is unavailable- added by None (Submitted the item)
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    Follow 3 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2010-01-08 fischl StatusNone Fixed
        Open/ClosedOpen Closed
    2010-01-08 joerg_wunsch Assigned toNone fischl

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