watchdog.c

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00001 /*
00002  * Copyright (C) 2006 by egnite Software GmbH. All rights reserved.
00003  *
00004  * Redistribution and use in source and binary forms, with or without
00005  * modification, are permitted provided that the following conditions
00006  * are met:
00007  *
00008  * 1. Redistributions of source code must retain the above copyright
00009  *    notice, this list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above copyright
00011  *    notice, this list of conditions and the following disclaimer in the
00012  *    documentation and/or other materials provided with the distribution.
00013  * 3. Neither the name of the copyright holders nor the names of
00014  *    contributors may be used to endorse or promote products derived
00015  *    from this software without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS
00018  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00019  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
00020  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE
00021  * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
00022  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
00023  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
00024  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
00025  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00026  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
00027  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00028  * SUCH DAMAGE.
00029  *
00030  * For additional information see http://www.ethernut.de/
00031  *
00032  */
00033 
00034 /*
00035  * $Log: watchdog.c,v $
00036  * Revision 1.1  2006/06/06 19:08:05  haraldkipp
00037  * First release
00038  *
00039  */
00040 
00041 #include <sys/timer.h>
00042 #include <dev/watchdog.h>
00043 
00044 /*
00045  * Start the hardware watch dog timer.
00046  */
00047 u_long NutWatchDogStart(u_long ms, u_long xmode)
00048 {
00049 #if defined(__AVR__)
00050     return AvrWatchDogStart(ms);
00051 #elif defined(MCU_AT91R40008)
00052     return At91WatchDogStart(ms, xmode);
00053 #else
00054     return 0;
00055 #endif
00056 }
00057 
00058 /*
00059  * Re-start the hardware watch dog timer.
00060  */
00061 void NutWatchDogRestart(void)
00062 {
00063 #if defined(__AVR__)
00064     AvrWatchDogRestart();
00065 #elif defined(MCU_AT91R40008)
00066     At91WatchDogRestart();
00067 #endif
00068 }
00069 
00070 /*
00071  * Disable the hardware watch dog timer.
00072  */
00073 void NutWatchDogDisable(void)
00074 {
00075 #if defined(__AVR__)
00076     AvrWatchDogDisable();
00077 #elif defined(MCU_AT91R40008)
00078     At91WatchDogDisable();
00079 #endif
00080 }
00081 
00082 /*
00083  * Enable the hardware watch dog timer.
00084  */
00085 void NutWatchDogEnable(void)
00086 {
00087 #if defined(__AVR__)
00088     AvrWatchDogEnable();
00089 #elif defined(MCU_AT91R40008)
00090     At91WatchDogEnable();
00091 #endif
00092 }
00093 

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