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[Uisp-dev] [Bug #1745] VTarget and ARef programming or reading with STK
From: |
nobody |
Subject: |
[Uisp-dev] [Bug #1745] VTarget and ARef programming or reading with STK500 is wrong |
Date: |
Thu, 13 Mar 2003 12:51:14 -0500 |
=================== BUG #1745: LATEST MODIFICATIONS ==================
http://savannah.nongnu.org/bugs/?func=detailbug&bug_id=1745&group_id=2117
Changes by: Theodore A. Roth <address@hidden>
Date: Thu 03/13/03 at 09:51 (US/Pacific)
What | Removed | Added
---------------------------------------------------------------------------
Resolution | None | Wont Fix
Assigned to | None | troth
Originator Email | | unknown
Status | Open | Closed
------------------ Additional Follow-up Comments ----------------------------
This can't be fixed. It is a problem with the firmware in the stk500 as far as
I can tell. I think that the algorithm used to determine the voltage using the
ADC in the 8535 is the culprit.
=================== BUG #1745: FULL BUG SNAPSHOT ===================
Submitted by: None Project: AVR In-System Programmer
Submitted on: Mon 11/18/02 at 12:54
Category: None Severity: 5 - Major
Bug Group: None Resolution: Wont Fix
Assigned to: troth Originator Email: unknown
Status: Closed
Summary: VTarget and ARef programming or reading with STK500 is wrong
Original Submission: $ uisp -dprog=stk500 -dpart=AT90S8535 -mode=s --waref=5.0
Atmel AVR AT90S8535 is found.
$ uisp -dprog=stk500 -dpart=AT90S8535 -mode=s --raref
Atmel AVR AT90S8535 is found.
ARef is set to 5.1 V
Setting aref or vtar to 5.0V gives 5.1V when reading. There is always 0.1V
difference between writing and reading.
Follow-up Comments
*******************
-------------------------------------------------------
Date: Thu 03/13/03 at 09:51 By: troth
This can't be fixed. It is a problem with the firmware in the stk500 as far as
I can tell. I think that the algorithm used to determine the voltage using the
ADC in the 8535 is the culprit.
CC list is empty
No files currently attached
For detailed info, follow this link:
http://savannah.nongnu.org/bugs/?func=detailbug&bug_id=1745&group_id=2117
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