63 lines
2.5 KiB
C++
63 lines
2.5 KiB
C++
/***************************************************************************
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* Copyright (C) 2017 by Matteo Michele Piazzolla *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* As a special exception, if other files instantiate templates or use *
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* macros or inline functions from this file, or you compile this file *
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* and link it with other works to produce a work based on this file, *
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* this file does not by itself cause the resulting work to be covered *
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* by the GNU General Public License. However the source code for this *
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* file must still be made available in accordance with the GNU General *
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* Public License. This exception does not invalidate any other reasons *
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* why a work based on this file might be covered by the GNU General *
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* Public License. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, see <http://www.gnu.org/licenses/> *
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***************************************************************************/
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#include "stm32_wd.h"
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#include "miosix.h"
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#include <algorithm>
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using namespace std;
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namespace miosix {
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IWatchDog& IWatchDog::instance()
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{
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static IWatchDog singleton;
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return singleton;
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}
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void IWatchDog::enable(int ms)
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{
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/* disable WD configuration protection */
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IWDG->KR = 0x5555;
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/* set prescaler divider to /32 */
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IWDG->PR = 0x3;
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/* set reload register */
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IWDG->RLR = max(1,min(4096,ms))-1;
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/* start the watchdog */
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IWDG->KR = 0xCCCC;
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}
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void IWatchDog::refresh()
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{
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IWDG->KR=0xAAAA;
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}
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} //namespace miosix
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