2.3-InternetRadio/nutos/nut/arch/avr32/dev/reset.c

/*!
 * Copyright (C) 2001-2010 by egnite Software GmbH
 *
 * All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the copyright holders nor the names of
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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/*!
 * \file arch/avr32/dev/reset.c
 * \brief AVR32 system reset.
 *
 * \verbatim
 * $Id: reset.c,v 1.2 2008/10/03 11:30:22 haraldkipp Exp $
 * \endverbatim
 */

#include <arch/avr32.h>
#include <dev/reset.h>
#include <dev/watchdog.h>

#include <avr32/io.h>

/*!
 * \addtogroup xgNutArchAvr32Rstc
 */
/*@{*/

/*!
 * \brief System reset.
 */
void Avr32Reset(void)
{
    /* use the watchdog. */
    if (NutWatchDogStart(1, 0)) {
        for (;;);
    }
}

int Avr32ResetCause(void)
{
    int rc = NUT_RSTTYP_UNKNOWN;

    switch (AVR32_PM.rcause) {
    case AVR32_PM_RCAUSE_POR:
        rc = NUT_RSTTYP_POWERUP;
        break;
    case AVR32_PM_RCAUSE_WDT:
        rc = NUT_RSTTYP_WATCHDOG;
        break;
    case AVR32_PM_RCAUSE_EXT:
        rc = NUT_RSTTYP_EXTERNAL;
        break;
    case AVR32_PM_RCAUSE_BOD:
        rc = NUT_RSTTYP_BROWNOUT;
        break;
    }
    return rc;
}

/*@}*/