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