# HG changeset patch
# User darius@inchoate.localdomain
# Date 1240206726 -28800
# Node ID 3da232f97e810572f97303eba10e0b56ca684963
# Parent  03eba20b5edb7d1322d385fd719757081c0d6d7b
Invert the bit mask, we only want to turn off this bit, not everything.

diff -r 03eba20b5edb -r 3da232f97e81 ds1307.c
--- a/ds1307.c	Thu Mar 12 16:30:58 2009 +1030
+++ b/ds1307.c	Mon Apr 20 13:52:06 2009 +0800
@@ -47,7 +47,7 @@
 int
 ds1307_init(void) {
 #ifdef PRR
-    PRR &= _BV(PRTWI);		/* Power TWI on - note that the
+    PRR &= ~_BV(PRTWI);		/* Power TWI on - note that the
 				 * datasheet says this is already 0 at
 				 * power on.. */
 #endif