Kari Argillander
cb243c36a8
* Change MIT license texts to SPDX-License-Identifier SPDX-License-Identifier is much easier to understand and grep than license text so use that instead. * Change GPL exception license texts to SPDX-License-Identifier SPDX-License-Identifier is much easier to understand and grep than license text so use that instead. * Change misc license texts to SPDX-License-Identifier There are some external code in repo which are not licenses as most of the stuff in this repo. We still want every file to have SPDX identifier to easily grep licenses. * Add currently used license files Even though Bacnet-Stack is using SPDX identifiers we still need to give those license files with source. For this reason add all license files to license/ folder. SPDX has also files which would make same thing but this is style which example Linux kernel is using and it is quite clear so I choose that one for now. I choosed not yet bring CC-PDDC as that is not right license for those files. --------- Co-authored-by: Kari Argillander <kari.argillander@fidelix.com>
83 lines
2.2 KiB
C
83 lines
2.2 KiB
C
/**************************************************************************
|
|
*
|
|
* Copyright (C) 2009 Steve Karg <skarg@users.sourceforge.net>
|
|
*
|
|
* SPDX-License-Identifier: MIT
|
|
*
|
|
*********************************************************************/
|
|
#include "hardware.h"
|
|
#include "watchdog.h"
|
|
|
|
#if !defined(__GNUC__)
|
|
static inline void wdt_enable(int value)
|
|
{
|
|
__disable_interrupt();
|
|
__watchdog_reset();
|
|
/* Start timed equence */
|
|
WDTCSR |= (1 << WDCE) | (1 << WDE);
|
|
/* Set new prescaler(time-out) value = 64K cycles (~0.5 s) */
|
|
WDTCSR = (1 << WDE) | (value);
|
|
/* we aren't ready to enable interrupts here
|
|
__enable_interrupt(); */
|
|
}
|
|
|
|
static inline void wdt_disable(void)
|
|
{
|
|
__disable_interrupt();
|
|
__watchdog_reset();
|
|
/* Clear WDRF in MCUSR */
|
|
MCUSR &= ~(1 << WDRF);
|
|
/* Write logical one to WDCE and WDE */
|
|
/* Keep old prescaler setting to prevent unintentional time-out */
|
|
WDTCSR |= (1 << WDCE) | (1 << WDE);
|
|
/* Turn off WDT */
|
|
WDTCSR = 0x00;
|
|
__enable_interrupt();
|
|
}
|
|
|
|
static inline void wdt_reset(void)
|
|
{
|
|
__watchdog_reset();
|
|
}
|
|
#endif
|
|
|
|
/*************************************************************************
|
|
* Description: Reset the watchdog timer
|
|
* Returns: none
|
|
* Notes: none
|
|
**************************************************************************/
|
|
void watchdog_reset(void)
|
|
{
|
|
wdt_reset();
|
|
}
|
|
|
|
/*************************************************************************
|
|
* Description: Initialize the watchdog timer
|
|
* Returns: none
|
|
* Notes: none
|
|
**************************************************************************/
|
|
void watchdog_init(unsigned milliseconds)
|
|
{
|
|
unsigned value = WDTO_15MS;
|
|
if (milliseconds) {
|
|
if (milliseconds <= 15) {
|
|
value = WDTO_15MS;
|
|
} else if (milliseconds <= 30) {
|
|
value = WDTO_30MS;
|
|
} else if (milliseconds <= 60) {
|
|
value = WDTO_60MS;
|
|
} else if (milliseconds <= 120) {
|
|
value = WDTO_120MS;
|
|
} else if (milliseconds <= 500) {
|
|
value = WDTO_500MS;
|
|
} else if (milliseconds <= 1000) {
|
|
value = WDTO_1S;
|
|
} else {
|
|
value = WDTO_2S;
|
|
}
|
|
wdt_enable(value);
|
|
} else {
|
|
wdt_disable();
|
|
}
|
|
}
|