126 lines
4.8 KiB
C
126 lines
4.8 KiB
C
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/**************************************************************************//**
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* @file wwdt.h
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* @version V1.00
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* $Revision: 9 $
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* $Date: 14/05/29 1:13p $
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* @brief NUC472/NUC442 WWDT driver header file
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*
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* @note
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* Copyright (C) 2013 Nuvoton Technology Corp. All rights reserved.
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*****************************************************************************/
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#ifndef __WWDT_H__
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#define __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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/** @addtogroup NUC472_442_Device_Driver NUC472/NUC442 Device Driver
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@{
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*/
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/** @addtogroup NUC472_442_WWDT_Driver WWDT Driver
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@{
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*/
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/** @addtogroup NUC472_442_WWDT_EXPORTED_CONSTANTS WWDT Exported Constants
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@{
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*/
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#define WWDT_PRESCALER_1 (0UL << WWDT_CTL_PSCSEL_Pos) ///< WWDT setting prescaler to 1 \hideinitializer
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#define WWDT_PRESCALER_2 (1UL << WWDT_CTL_PSCSEL_Pos) ///< WWDT setting prescaler to 2 \hideinitializer
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#define WWDT_PRESCALER_4 (2UL << WWDT_CTL_PSCSEL_Pos) ///< WWDT setting prescaler to 4 \hideinitializer
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#define WWDT_PRESCALER_8 (3UL << WWDT_CTL_PSCSEL_Pos) ///< WWDT setting prescaler to 8 \hideinitializer
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#define WWDT_PRESCALER_16 (4UL << WWDT_CTL_PSCSEL_Pos) ///< WWDT setting prescaler to 16 \hideinitializer
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#define WWDT_PRESCALER_32 (5UL << WWDT_CTL_PSCSEL_Pos) ///< WWDT setting prescaler to 32 \hideinitializer
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#define WWDT_PRESCALER_64 (6UL << WWDT_CTL_PSCSEL_Pos) ///< WWDT setting prescaler to 64 \hideinitializer
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#define WWDT_PRESCALER_128 (7UL << WWDT_CTL_PSCSEL_Pos) ///< WWDT setting prescaler to 128 \hideinitializer
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#define WWDT_PRESCALER_192 (8UL << WWDT_CTL_PSCSEL_Pos) ///< WWDT setting prescaler to 192 \hideinitializer
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#define WWDT_PRESCALER_256 (9UL << WWDT_CTL_PSCSEL_Pos) ///< WWDT setting prescaler to 256 \hideinitializer
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#define WWDT_PRESCALER_384 (0xAUL << WWDT_CTL_PSCSEL_Pos) ///< WWDT setting prescaler to 384 \hideinitializer
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#define WWDT_PRESCALER_512 (0xBUL << WWDT_CTL_PSCSEL_Pos) ///< WWDT setting prescaler to 512 \hideinitializer
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#define WWDT_PRESCALER_768 (0xCUL << WWDT_CTL_PSCSEL_Pos) ///< WWDT setting prescaler to 768 \hideinitializer
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#define WWDT_PRESCALER_1024 (0xDUL << WWDT_CTL_PSCSEL_Pos) ///< WWDT setting prescaler to 1024 \hideinitializer
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#define WWDT_PRESCALER_1536 (0xEUL << WWDT_CTL_PSCSEL_Pos) ///< WWDT setting prescaler to 1536 \hideinitializer
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#define WWDT_PRESCALER_2048 (0xFUL << WWDT_CTL_PSCSEL_Pos) ///< 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 NUC472_442_WWDT_EXPORTED_CONSTANTS */
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/** @addtogroup NUC472_442_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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* @param None
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* @return None
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* \hideinitializer
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*/
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#define WWDT_CLEAR_RESET_FLAG() (WWDT->STATUS = WWDT_STATUS_WWDTRF_Msk)
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/**
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* @brief This macro clear WWDT compare match interrupt flag.
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* @param None
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* @return None
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* \hideinitializer
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*/
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#define WWDT_CLEAR_INT_FLAG() (WWDT->STATUS = WWDT_STATUS_WWDTIF_Msk)
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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() (WWDT->STATUS & WWDT_STATUS_WWDTRF_Msk ? 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() (WWDT->STATUS & WWDT_STATUS_WWDTIF_Msk ? 1 : 0)
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/**
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* @brief This macro to reflects current WWDT counter value
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* @param None
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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() (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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* @param None
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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() (WWDT->RLDCNT = WWDT_RELOAD_WORD)
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void WWDT_Open(uint32_t u32PreScale, uint32_t u32CmpValue, uint32_t u32EnableInt);
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/*@}*/ /* end of group NUC472_442_WWDT_EXPORTED_FUNCTIONS */
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/*@}*/ /* end of group NUC472_442_WWDT_Driver */
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/*@}*/ /* end of group NUC472_442_Device_Driver */
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#ifdef __cplusplus
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}
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#endif
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#endif //__WWDT_H__
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/*** (C) COPYRIGHT 2013 Nuvoton Technology Corp. ***/
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