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/**************************************************************************//**
* @file wwdt.h
* @brief NUC980 WWDT driver header file
*
* SPDX-License-Identifier: Apache-2.0
* @copyright (C) 2018 Nuvoton Technology Corp. All rights reserved.
*****************************************************************************/
#ifndef __NU_WWDT_H__
#define __NU_WWDT_H__
#include "nuc980.h"
#ifdef __cplusplus
extern "C"
{
#endif
/** @addtogroup Standard_Driver Standard Driver
@{
*/
/** @addtogroup WWDT_Driver WWDT Driver
@{
*/
/** @addtogroup WWDT_EXPORTED_CONSTANTS WWDT Exported Constants
@{
*/
#define WWDT_PRESCALER_1 (0UL << 8) ///< WWDT setting prescaler to 1 \hideinitializer
#define WWDT_PRESCALER_2 (1UL << 8) ///< WWDT setting prescaler to 2 \hideinitializer
#define WWDT_PRESCALER_4 (2UL << 8) ///< WWDT setting prescaler to 4 \hideinitializer
#define WWDT_PRESCALER_8 (3UL << 8) ///< WWDT setting prescaler to 8 \hideinitializer
#define WWDT_PRESCALER_16 (4UL << 8) ///< WWDT setting prescaler to 16 \hideinitializer
#define WWDT_PRESCALER_32 (5UL << 8) ///< WWDT setting prescaler to 32 \hideinitializer
#define WWDT_PRESCALER_64 (6UL << 8) ///< WWDT setting prescaler to 64 \hideinitializer
#define WWDT_PRESCALER_128 (7UL << 8) ///< WWDT setting prescaler to 128 \hideinitializer
#define WWDT_PRESCALER_192 (8UL << 8) ///< WWDT setting prescaler to 192 \hideinitializer
#define WWDT_PRESCALER_256 (9UL << 8) ///< WWDT setting prescaler to 256 \hideinitializer
#define WWDT_PRESCALER_384 (0xAUL << 8) ///< WWDT setting prescaler to 384 \hideinitializer
#define WWDT_PRESCALER_512 (0xBUL << 8) ///< WWDT setting prescaler to 512 \hideinitializer
#define WWDT_PRESCALER_768 (0xCUL << 8) ///< WWDT setting prescaler to 768 \hideinitializer
#define WWDT_PRESCALER_1024 (0xDUL << 8) ///< WWDT setting prescaler to 1024 \hideinitializer
#define WWDT_PRESCALER_1536 (0xEUL << 8) ///< WWDT setting prescaler to 1536 \hideinitializer
#define WWDT_PRESCALER_2048 (0xFUL << 8) ///< WWDT setting prescaler to 2048 \hideinitializer
#define WWDT_RELOAD_WORD (0x00005AA5) ///< Fill this value to RLD register to reload WWDT counter \hideinitializer
/*@}*/ /* end of group WWDT_EXPORTED_CONSTANTS */
/** @addtogroup WWDT_EXPORTED_FUNCTIONS WWDT Exported Functions
@{
*/
/**
* @brief This macro clear WWDT time-out reset system flag.
* @return None
* \hideinitializer
*/
#define WWDT_CLEAR_RESET_FLAG() outpw(REG_WWDT_STATUS, 0x2)
/**
* @brief This macro clear WWDT compare match interrupt flag.
* @return None
* \hideinitializer
*/
#define WWDT_CLEAR_INT_FLAG() outpw(REG_WWDT_STATUS, 0x1)
/**
* @brief This macro is use to get WWDT time-out reset system flag.
* @return WWDT reset system or not
* @retval 0 WWDT did not cause system reset
* @retval 1 WWDT caused system reset
* \hideinitializer
*/
#define WWDT_GET_RESET_FLAG() (inpw(REG_WWDT_STATUS) & 0x2 ? 1 : 0)
/**
* @brief This macro is used to indicate WWDT compare match interrupt flag.
* @return WWDT compare match interrupt occurred or not
* @retval 0 WWDT compare match interrupt did not occur
* @retval 1 WWDT compare match interrupt occurred
* \hideinitializer
*/
#define WWDT_GET_INT_FLAG() (inpw(REG_WWDT_STATUS) & 0x1 ? 1 : 0)
/**
* @brief This macro to reflects current WWDT counter value
* @return Return current WWDT counter value
* \hideinitializer
*/
#define WWDT_GET_COUNTER() inpw(REG_WWDT_CNT)
/**
* @brief This macro is used to reload the WWDT counter value to 0x3F.
* @return None
* @details After WWDT enabled, application must reload WWDT counter while
* current counter is less than compare value and larger than 0,
* otherwise WWDT will cause system reset.
* \hideinitializer
*/
#define WWDT_RELOAD_COUNTER() outpw(REG_WWDT_RLDCNT, WWDT_RELOAD_WORD)
void WWDT_Open(UINT u32PreScale, UINT u32CmpValue, UINT u32EnableInt);
/*@}*/ /* end of group WWDT_EXPORTED_FUNCTIONS */
/*@}*/ /* end of group WWDT_Driver */
/*@}*/ /* end of group Standard_Driver */
#ifdef __cplusplus
}
#endif
#endif //__NU_WWDT_H__
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