121 lines
4.3 KiB
C
121 lines
4.3 KiB
C
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/**************************************************************************//**
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* @file wwdt.h
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* @brief N9H30 WWDT driver header file
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*
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* @note
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* SPDX-License-Identifier: Apache-2.0
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* Copyright (C) 2018 Nuvoton Technology Corp. All rights reserved.
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*****************************************************************************/
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#ifndef __NU_WWDT_H__
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#define __NU_WWDT_H__
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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#include "N9H30.h"
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/** @addtogroup N9H30_Device_Driver N9H30 Device Driver
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@{
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*/
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/** @addtogroup N9H30_WWDT_Driver WWDT Driver
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@{
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*/
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/** @addtogroup N9H30_WWDT_EXPORTED_CONSTANTS WWDT Exported Constants
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@{
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*/
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#define WWDT_PRESCALER_1 (0UL << 8) ///< WWDT setting prescaler to 1 \hideinitializer
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#define WWDT_PRESCALER_2 (1UL << 8) ///< WWDT setting prescaler to 2 \hideinitializer
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#define WWDT_PRESCALER_4 (2UL << 8) ///< WWDT setting prescaler to 4 \hideinitializer
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#define WWDT_PRESCALER_8 (3UL << 8) ///< WWDT setting prescaler to 8 \hideinitializer
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#define WWDT_PRESCALER_16 (4UL << 8) ///< WWDT setting prescaler to 16 \hideinitializer
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#define WWDT_PRESCALER_32 (5UL << 8) ///< WWDT setting prescaler to 32 \hideinitializer
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#define WWDT_PRESCALER_64 (6UL << 8) ///< WWDT setting prescaler to 64 \hideinitializer
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#define WWDT_PRESCALER_128 (7UL << 8) ///< WWDT setting prescaler to 128 \hideinitializer
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#define WWDT_PRESCALER_192 (8UL << 8) ///< WWDT setting prescaler to 192 \hideinitializer
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#define WWDT_PRESCALER_256 (9UL << 8) ///< WWDT setting prescaler to 256 \hideinitializer
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#define WWDT_PRESCALER_384 (0xAUL << 8) ///< WWDT setting prescaler to 384 \hideinitializer
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#define WWDT_PRESCALER_512 (0xBUL << 8) ///< WWDT setting prescaler to 512 \hideinitializer
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#define WWDT_PRESCALER_768 (0xCUL << 8) ///< WWDT setting prescaler to 768 \hideinitializer
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#define WWDT_PRESCALER_1024 (0xDUL << 8) ///< WWDT setting prescaler to 1024 \hideinitializer
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#define WWDT_PRESCALER_1536 (0xEUL << 8) ///< WWDT setting prescaler to 1536 \hideinitializer
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#define WWDT_PRESCALER_2048 (0xFUL << 8) ///< WWDT setting prescaler to 2048 \hideinitializer
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#define WWDT_RELOAD_WORD (0x00005AA5) ///< Fill this value to RLD register to reload WWDT counter \hideinitializer
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/*@}*/ /* end of group N9H30_WWDT_EXPORTED_CONSTANTS */
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/** @addtogroup N9H30_WWDT_EXPORTED_FUNCTIONS WWDT Exported Functions
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@{
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*/
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/**
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* @brief This macro clear WWDT time-out reset system flag.
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* @return None
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* \hideinitializer
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*/
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#define WWDT_CLEAR_RESET_FLAG() outpw(REG_WWDT_STATUS, 0x2)
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/**
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* @brief This macro clear WWDT compare match interrupt flag.
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* @return None
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* \hideinitializer
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*/
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#define WWDT_CLEAR_INT_FLAG() outpw(REG_WWDT_STATUS, 0x1)
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/**
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* @brief This macro is use to get WWDT time-out reset system flag.
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* @return WWDT reset system or not
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* @retval 0 WWDT did not cause system reset
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* @retval 1 WWDT caused system reset
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* \hideinitializer
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*/
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#define WWDT_GET_RESET_FLAG() (inpw(REG_WWDT_STATUS) & 0x2 ? 1 : 0)
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/**
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* @brief This macro is used to indicate WWDT compare match interrupt flag.
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* @return WWDT compare match interrupt occurred or not
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* @retval 0 WWDT compare match interrupt did not occur
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* @retval 1 WWDT compare match interrupt occurred
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* \hideinitializer
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*/
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#define WWDT_GET_INT_FLAG() (inpw(REG_WWDT_STATUS) & 0x1 ? 1 : 0)
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/**
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* @brief This macro to reflects current WWDT counter value
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* @return Return current WWDT counter value
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* \hideinitializer
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*/
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#define WWDT_GET_COUNTER() inpw(REG_WWDT_CNT)
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/**
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* @brief This macro is used to reload the WWDT counter value to 0x3F.
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* @return None
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* @details After WWDT enabled, application must reload WWDT counter while
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* current counter is less than compare value and larger than 0,
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* otherwise WWDT will cause system reset.
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* \hideinitializer
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*/
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#define WWDT_RELOAD_COUNTER() outpw(REG_WWDT_RLDCNT, WWDT_RELOAD_WORD)
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void WWDT_Open(UINT u32PreScale, UINT u32CmpValue, UINT u32EnableInt);
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/*@}*/ /* end of group N9H30_WWDT_EXPORTED_FUNCTIONS */
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/*@}*/ /* end of group N9H30_WWDT_Driver */
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/*@}*/ /* end of group N9H30_Device_Driver */
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#ifdef __cplusplus
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}
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#endif
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#endif //__NU_WWDT_H__
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/*** (C) COPYRIGHT 2018 Nuvoton Technology Corp. ***/
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