URL:
<http://savannah.nongnu.org/bugs/?22883>
Summary: Chip Erase performed even with no-write flag (-n)
Project: AVR Downloader/UploaDEr
Submitted by: None
Submitted on: Mittwoch 09.04.2008 um 17:31 UTC
Category: None
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: None
Status: None
Privacy: Public
Assigned to: None
Originator Name: Thomas Holland
Originator Email: [EMAIL PROTECTED]
Open/Closed: Open
Discussion Lock: Any
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Details:
While the -n flag prevents avrdude from writing anything to the flash memory,
it will nevertheless happily do a chip erase.
This is somewhat unexpected, as the docs state that -n "disables actually
writing data to the MCU". I would consider filling the memory with 0xff very
much as writing to the MCU.
Below is a small patch to prevent the chip erase when the -n option has been
selected.
brgds
Thomas
Index: main.c
===================================================================
RCS file: /sources/avrdude/avrdude/main.c,v
retrieving revision 1.131
diff -u -r1.131 main.c
--- main.c 8 Nov 2007 22:34:36 -0000 1.131
+++ main.c 9 Apr 2008 17:29:42 -0000
@@ -1015,7 +1015,7 @@
}
- if (erase) {
+ if (erase && !nowrite) {
/*
* erase the chip's flash and eeprom memories, this is required
* before the chip can accept new programming
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<http://savannah.nongnu.org/bugs/?22883>
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