bugAVR Downloader/UploaDEr - Bugs: bug #30756, When setting SUT to 64ms on XMEGA,...

 
 

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bug #30756: When setting SUT to 64ms on XMEGA, avrdude doesn't read device signature

Submitted by:  Simone Zamboni <zsimon>
Submitted on:  Thu 12 Aug 2010 10:18:06 AM UTC  
 
Category: NoneSeverity: 3 - Normal
Priority: 5 - NormalItem Group: None
Status: FixedPrivacy: Public
Assigned to: Joerg Wunsch <joerg_wunsch>Originator Name: Simone Zamboni
Open/Closed: ClosedRelease: None
Programmer hardware: Device type: 

Fri 20 Apr 2012 12:34:25 PM UTC, comment #1:

Fixed in SVN r1084: when the signature reads out as 0x000000
or 0xffffff, up to two retries (with progressive delays) are
attempted before proceeding.

Joerg Wunsch <joerg_wunsch>
Project AdministratorIn charge of this item.
Thu 12 Aug 2010 10:18:06 AM UTC, original submission:

I'm using avrdude 5.10 with AVRISP mkII on USB.

In my last project I set up device SUT (start up time) to 64ms to let the power supply settle. I found that invoking avrdude it reports that the device signature is 0x000000. I can bypass the error with -F option but I think that the problem could be easy to fix inserting a 100ms delay before reading the device after it has been reset.

Device SUT is available for XMEGA devices in the fuse bits.

P.S. With SUT of 4ms, avrdude reads the device signature correctly.

Simone Zamboni <zsimon>

 

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Items that depend on this one: None found

 

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  • -unavailable- added by zsimon (Submitted the item)
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    Follow 4 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Fri 20 Apr 2012 12:34:25 PM UTCjoerg_wunschStatusNone=>Fixed
      Assigned toNone=>joerg_wunsch
      Open/ClosedOpen=>Closed
    Thu 12 Aug 2010 10:18:06 AM UTCzsimonCarbon-Copy-=>Added -unavailable-

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