mirror of
https://github.com/arduino/Arduino.git
synced 2025-01-10 00:46:09 +01:00
56 lines
1.4 KiB
C++
56 lines
1.4 KiB
C++
/*
|
|
Copyright (c) 2014 Arduino. All right reserved.
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
This library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
See the GNU Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with this library; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include <chip.h>
|
|
|
|
#include "watchdog.h"
|
|
|
|
|
|
void watchdogEnable (uint32_t timeout)
|
|
{
|
|
/* this assumes the slow clock is running at 32.768 kHz
|
|
watchdog frequency is therefore 32768 / 128 = 256 Hz */
|
|
timeout = timeout * 256 / 1000;
|
|
if (timeout == 0)
|
|
timeout = 1;
|
|
else if (timeout > 0xFFF)
|
|
timeout = 0xFFF;
|
|
timeout = WDT_MR_WDRSTEN | WDT_MR_WDV(timeout) | WDT_MR_WDD(timeout);
|
|
WDT_Enable (WDT, timeout);
|
|
}
|
|
|
|
void watchdogDisable(void)
|
|
{
|
|
WDT_Disable (WDT);
|
|
}
|
|
|
|
void watchdogReset(void)
|
|
{
|
|
WDT_Restart (WDT);
|
|
}
|
|
|
|
|
|
extern "C"
|
|
void _watchdogDefaultSetup (void)
|
|
{
|
|
WDT_Disable (WDT);
|
|
}
|
|
void watchdogSetup (void) __attribute__ ((weak, alias("_watchdogDefaultSetup")));
|
|
|
|
|