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[avrdude-dev] [bug #52963] -U option with flash memory doesn't perform c
From: |
anonymous |
Subject: |
[avrdude-dev] [bug #52963] -U option with flash memory doesn't perform chip erase with arduino programmer |
Date: |
Tue, 23 Jan 2018 18:13:19 -0500 (EST) |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Firefox/38.0 Iceweasel/38.8.0 |
URL:
<http://savannah.nongnu.org/bugs/?52963>
Summary: -U option with flash memory doesn't perform chip
erase with arduino programmer
Project: AVR Downloader/UploaDEr
Submitted by: None
Submitted on: Tue 23 Jan 2018 11:13:18 PM UTC
Category: None
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: None
Status: None
Privacy: Public
Assigned to: None
Originator Name: Britton Kerin
Originator Email: address@hidden
Open/Closed: Open
Release: 6.3
Discussion Lock: Any
Programmer hardware: arduino
Device type:
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Details:
It can't because that would blow away the bootlaoder.
The -D option description currently says this:
-D Disable auto erase for flash. When the -U option with flash
memory is specified, avrdude will perform a chip erase before
starting any of the programming operations, since it generally is a
mistake to program the flash without performing an erase first. This
option disables that. Auto erase is not used for ATxmega devices as
these devices can use page erase before writing each page so no
explicit chip erase is required. Note however that any page not
affected by the current operation will retain its previous contents.
If exceptions for ATxmega deserve a mention that the arduino programmer
exception certainly does too. It can matter because e.g. EEPROM doesn't end
up
getting cleared like documentation in chip datasheet says it does for chip
erase (assuming EESAVE not programmed).
_______________________________________________________
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<http://savannah.nongnu.org/bugs/?52963>
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- [avrdude-dev] [bug #52963] -U option with flash memory doesn't perform chip erase with arduino programmer,
anonymous <=