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  * $Log$
00036  * Revision 1.2  2008/08/11 06:59:42  haraldkipp
00037  * BSD types replaced by stdint types (feature request #1282721).
00038  *
00039  * Revision 1.1  2006/06/06 19:08:05  haraldkipp
00040  * First release
00041  *
00042  */
00043 
00044 #include <sys/timer.h>
00045 #include <dev/watchdog.h>
00046 
00047 /*
00048  * Start the hardware watch dog timer.
00049  */
00050 uint32_t NutWatchDogStart(uint32_t ms, uint32_t xmode)
00051 {
00052 #if defined(__AVR__)
00053     return AvrWatchDogStart(ms);
00054 #elif defined(MCU_AT91R40008)
00055     return At91WatchDogStart(ms, xmode);
00056 #else
00057     return 0;
00058 #endif
00059 }
00060 
00061 /*
00062  * Re-start the hardware watch dog timer.
00063  */
00064 void NutWatchDogRestart(void)
00065 {
00066 #if defined(__AVR__)
00067     AvrWatchDogRestart();
00068 #elif defined(MCU_AT91R40008)
00069     At91WatchDogRestart();
00070 #endif
00071 }
00072 
00073 /*
00074  * Disable the hardware watch dog timer.
00075  */
00076 void NutWatchDogDisable(void)
00077 {
00078 #if defined(__AVR__)
00079     AvrWatchDogDisable();
00080 #elif defined(MCU_AT91R40008)
00081     At91WatchDogDisable();
00082 #endif
00083 }
00084 
00085 /*
00086  * Enable the hardware watch dog timer.
00087  */
00088 void NutWatchDogEnable(void)
00089 {
00090 #if defined(__AVR__)
00091     AvrWatchDogEnable();
00092 #elif defined(MCU_AT91R40008)
00093     At91WatchDogEnable();
00094 #endif
00095 }
00096 

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