From a4d5ca833c2557f16e99eeda9111a870ed866f97 Mon Sep 17 00:00:00 2001
From: adamdunkels <adamdunkels>
Date: Mon, 21 Jan 2008 10:39:23 +0000
Subject: [PATCH] Update the periodic watchdog only if it is not stopped

---
 cpu/msp430/watchdog.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/cpu/msp430/watchdog.c b/cpu/msp430/watchdog.c
index 55e42f135..4a59a37c5 100644
--- a/cpu/msp430/watchdog.c
+++ b/cpu/msp430/watchdog.c
@@ -28,11 +28,12 @@
  *
  * This file is part of the Contiki operating system.
  *
- * @(#)$Id: watchdog.c,v 1.3 2008/01/08 08:03:02 adamdunkels Exp $
+ * @(#)$Id: watchdog.c,v 1.4 2008/01/21 10:39:23 adamdunkels Exp $
  */
 #include <io.h>
 #include "dev/watchdog.h"
 
+static int stopped = 0;
 /*---------------------------------------------------------------------------*/
 void
 watchdog_init(void)
@@ -48,6 +49,7 @@ watchdog_start(void)
   /* We setup the watchdog to reset the device after one second,
      unless watchdog_periodic() is called. */
   WDTCTL = WDTPW | WDTCNTCL | WDT_ARST_1000;
+  stopped = 0;
 }
 /*---------------------------------------------------------------------------*/
 void
@@ -55,13 +57,16 @@ watchdog_periodic(void)
 {
   /* This function is called periodically to restart the watchdog
      timer. */
-  WDTCTL = (WDTCTL & 0xff) | WDTPW | WDTCNTCL;
+  if(!stopped) {
+    WDTCTL = (WDTCTL & 0xff) | WDTPW | WDTCNTCL;
+  }
 }
 /*---------------------------------------------------------------------------*/
 void
 watchdog_stop(void)
 {
   WDTCTL = WDTPW | WDTHOLD;
+  stopped = 1;
 }
 /*---------------------------------------------------------------------------*/
 void