174 lines
6.1 KiB
C
174 lines
6.1 KiB
C
/**************************************************************************//**
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* @file wdt.h
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* @version V3.00
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* $Revision: 3 $
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* $Date: 14/01/28 10:49a $
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* @brief M051 series WDT 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 __WDT_H__
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#define __WDT_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 M051_Device_Driver M051 Device Driver
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@{
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*/
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/** @addtogroup M051_WDT_Driver WDT Driver
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@{
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*/
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/** @addtogroup M051_WDT_EXPORTED_CONSTANTS WDT Exported Constants
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@{
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*/
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/*---------------------------------------------------------------------------------------------------------*/
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/* WTCR Constants Definitions */
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/*---------------------------------------------------------------------------------------------------------*/
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#define WDT_TIMEOUT_2POW4 (0UL << WDT_WTCR_WTIS_Pos) /*!< Setting WDT time-out interval to 2^4 * WDT clocks */
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#define WDT_TIMEOUT_2POW6 (1UL << WDT_WTCR_WTIS_Pos) /*!< Setting WDT time-out interval to 2^6 * WDT clocks */
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#define WDT_TIMEOUT_2POW8 (2UL << WDT_WTCR_WTIS_Pos) /*!< Setting WDT time-out interval to 2^8 * WDT clocks */
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#define WDT_TIMEOUT_2POW10 (3UL << WDT_WTCR_WTIS_Pos) /*!< Setting WDT time-out interval to 2^10 * WDT clocks */
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#define WDT_TIMEOUT_2POW12 (4UL << WDT_WTCR_WTIS_Pos) /*!< Setting WDT time-out interval to 2^12 * WDT clocks */
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#define WDT_TIMEOUT_2POW14 (5UL << WDT_WTCR_WTIS_Pos) /*!< Setting WDT time-out interval to 2^14 * WDT clocks */
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#define WDT_TIMEOUT_2POW16 (6UL << WDT_WTCR_WTIS_Pos) /*!< Setting WDT time-out interval to 2^16 * WDT clocks */
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#define WDT_TIMEOUT_2POW18 (7UL << WDT_WTCR_WTIS_Pos) /*!< Setting WDT time-out interval to 2^18 * WDT clocks */
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/*---------------------------------------------------------------------------------------------------------*/
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/* WTCRALT Constants Definitions */
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/*---------------------------------------------------------------------------------------------------------*/
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#define WDT_RESET_DELAY_1026CLK (0UL << WDT_WTCRALT_WTRDSEL_Pos) /*!< Setting WDT reset delay period to 1026 * WDT clocks */
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#define WDT_RESET_DELAY_130CLK (1UL << WDT_WTCRALT_WTRDSEL_Pos) /*!< Setting WDT reset delay period to 130 * WDT clocks */
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#define WDT_RESET_DELAY_18CLK (2UL << WDT_WTCRALT_WTRDSEL_Pos) /*!< Setting WDT reset delay period to 18 * WDT clocks */
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#define WDT_RESET_DELAY_3CLK (3UL << WDT_WTCRALT_WTRDSEL_Pos) /*!< Setting WDT reset delay period to 3 * WDT clocks */
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/*@}*/ /* end of group M051_WDT_EXPORTED_CONSTANTS */
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/** @addtogroup M051_WDT_EXPORTED_FUNCTIONS WDT Exported Functions
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@{
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*/
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/**
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* @details This macro clear WDT time-out reset system flag.
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*/
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#define WDT_CLEAR_RESET_FLAG() (WDT->WTCR = (WDT->WTCR & ~(WDT_WTCR_WTIF_Msk | WDT_WTCR_WTWKF_Msk)) | WDT_WTCR_WTRF_Msk)
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/**
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* @details This macro clear WDT time-out interrupt flag.
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*/
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#define WDT_CLEAR_TIMEOUT_INT_FLAG() (WDT->WTCR = (WDT->WTCR & ~(WDT_WTCR_WTRF_Msk | WDT_WTCR_WTWKF_Msk)) | WDT_WTCR_WTIF_Msk)
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/**
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* @details This macro clear WDT time-out wake-up system flag.
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*/
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#define WDT_CLEAR_TIMEOUT_WAKEUP_FLAG() (WDT->WTCR = (WDT->WTCR & ~(WDT_WTCR_WTRF_Msk | WDT_WTCR_WTIF_Msk)) | WDT_WTCR_WTWKF_Msk)
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/**
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* @brief Get WDT Time-out Reset Flag
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*
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* @return WDT reset system or not
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* @retval 0 WDT did not cause system reset
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* @retval 1 WDT caused system reset
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*
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* @details This macro indicate WDT time-out to reset system or not.
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*/
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#define WDT_GET_RESET_FLAG() (WDT->WTCR & WDT_WTCR_WTRF_Msk ? 1 : 0)
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/**
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* @brief Get WDT Time-out Interrupt Flag
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*
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* @return WDT time-out interrupt occurred or not
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* @retval 0 WDT time-out interrupt did not occur
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* @retval 1 WDT time-out interrupt occurred
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*
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* @details This macro indicate WDT time-out interrupt occurred or not.
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*/
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#define WDT_GET_TIMEOUT_INT_FLAG() (WDT->WTCR & WDT_WTCR_WTIF_Msk ? 1 : 0)
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/**
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* @brief Get WDT Time-out Wake-up Flag
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*
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* @return WDT time-out waked system up or not
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* @retval 0 WDT did not wake up system
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* @retval 1 WDT waked up system
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*
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* @details This macro indicate WDT time-out waked system up or not
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*/
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#define WDT_GET_TIMEOUT_WAKEUP_FLAG() (WDT->WTCR & WDT_WTCR_WTWKF_Msk ? 1 : 0)
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/**
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* @details This macro is used to reset 18-bit WDT counter.
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* @note If WDT is activated and enabled to reset system, software must reset WDT counter \n
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* before WDT time-out plus reset delay reached. Or WDT generate a reset signal.
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*/
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#define WDT_RESET_COUNTER() (WDT->WTCR = (WDT->WTCR & ~(WDT_WTCR_WTIF_Msk | WDT_WTCR_WTWKF_Msk | WDT_WTCR_WTRF_Msk)) | WDT_WTCR_WTR_Msk)
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/**
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* @brief Stop WDT Counting
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*
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* @param None
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*
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* @return None
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*
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* @details This function stops WDT counting and disable WDT module.
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*/
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static __INLINE void WDT_Close(void)
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{
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WDT->WTCR = 0;
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return;
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}
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/**
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* @brief Enable WDT Time-out Interrupt
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*
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* @param None
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*
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* @return None
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*
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* @details This function enable the WDT time-out interrupt.
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*/
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static __INLINE void WDT_EnableInt(void)
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{
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WDT->WTCR |= WDT_WTCR_WTIE_Msk;
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return;
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}
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/**
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* @brief Disable WDT Time-out Interrupt
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*
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* @param None
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*
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* @return None
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*
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* @details This function disables the WDT time-out interrupt.
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*/
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static __INLINE void WDT_DisableInt(void)
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{
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// Do not touch write 1 clear bits
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WDT->WTCR &= ~(WDT_WTCR_WTIE_Msk | WDT_WTCR_WTRF_Msk | WDT_WTCR_WTIF_Msk);
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return;
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}
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void WDT_Open(uint32_t u32TimeoutInterval, uint32_t u32ResetDelay, uint32_t u32EnableReset, uint32_t u32EnableWakeup);
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/*@}*/ /* end of group M051_WDT_EXPORTED_FUNCTIONS */
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/*@}*/ /* end of group M051_WDT_Driver */
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/*@}*/ /* end of group M051_Device_Driver */
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#ifdef __cplusplus
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}
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#endif
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#endif //__WDT_H__
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/*** (C) COPYRIGHT 2013 Nuvoton Technology Corp. ***/
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