From 277e1a1e7a08325369e7fef7fe4bcd462b888098 Mon Sep 17 00:00:00 2001
From: Jan-Hinnerk Reichert <hinni@despammed.com>
Date: Sun, 4 Jul 2004 12:13:02 +0000
Subject: [PATCH] stk500.c: Fixed fosc behaviour for values exceeding maximum
frequency (contributed by Galen Seitz)
git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk@422 81a1dc3b-b13d-400b-aceb-764788c761c2
---
avrdude/ChangeLog | 4 ++++
avrdude/stk500.c | 2 +-
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/avrdude/ChangeLog b/avrdude/ChangeLog
index 58d33bb2..4343b9fa 100644
--- a/avrdude/ChangeLog
+++ b/avrdude/ChangeLog
@@ -1,3 +1,7 @@
+2004-07-04 Jan-Hinnerk Reichert <hinni@despammed.com>
+ * stk500.c: Fixed fosc behaviour for values exceeding
+ maximum frequency (contributed by Galen Seitz)
+
2004-07-04 Jan-Hinnerk Reichert <hinni@despammed.com>
* avrdude.conf.in: Added support for
ATtiny2313 (contributed by Bob Paddock)
diff --git a/avrdude/stk500.c b/avrdude/stk500.c
index dba06a85..ff232fda 100644
--- a/avrdude/stk500.c
+++ b/avrdude/stk500.c
@@ -919,7 +919,7 @@ static int stk500_set_fosc(PROGRAMMER * pgm, double v)
if (fosc >= fbase / (256 * ps[idx] * 2)) {
/* this prescaler value can handle our frequency */
prescale = idx + 1;
- cmatch = (unsigned)(fbase / (2 * v * ps[idx]));
+ cmatch = (unsigned)(fbase / (2 * fosc * ps[idx])) - 1;
break;
}
}