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/**
******************************************************************************
* @file lib_wdt.c
* @author Application Team
* @version V4.4.0
* @date 2018-09-27
* @brief WDT library.
******************************************************************************
* @attention
*
******************************************************************************
*/
#include "lib_wdt.h"
#define WDTPASS_KEY 0xAA5555AA
#define WDTCLR_KEY 0x55AAAA55
/**
* @brief Enable WDT timer.
* @param None
* @retval None
*/
void WDT_Enable(void)
{
PMU->WDTPASS = WDTPASS_KEY;
PMU->WDTEN |= PMU_WDTEN_WDTEN;
PMU->WDTPASS = WDTPASS_KEY;
PMU->WDTEN |= PMU_WDTEN_WDTEN;
}
/**
* @brief Disable WDT timer.
* @param None
* @retval None
*/
void WDT_Disable(void)
{
PMU->WDTPASS = WDTPASS_KEY;
PMU->WDTEN &= ~PMU_WDTEN_WDTEN;
PMU->WDTPASS = WDTPASS_KEY;
PMU->WDTEN &= ~PMU_WDTEN_WDTEN;
}
/**
* @brief Clear WDT counter.
* @param None
* @retval None
*/
void WDT_Clear(void)
{
PMU->WDTCLR = WDTCLR_KEY;
}
/**
* @brief Set WDT counting period.
* @param counting period:
WDT_2_SECS
WDT_1_SECS
WDT_0_5_SECS
WDT_0_25_SECS
* @retval None
*/
void WDT_SetPeriod(uint32_t period)
{
uint32_t tmp;
assert_parameters(IS_WDT_PERIOD(period));
tmp = PMU->WDTEN;
tmp &= ~PMU_WDTEN_WDTSEL;
tmp |= period;
PMU->WDTPASS = WDTPASS_KEY;
PMU->WDTEN = tmp;
}
/**
* @brief Get WDT counter value.
* @param None
* @retval current counter value.
*/
uint16_t WDT_GetCounterValue(void)
{
return (PMU->WDTCLR & PMU_WDTCLR_WDTCNT);
}
/*********************************** END OF FILE ******************************/
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