202 lines
6.6 KiB
C
202 lines
6.6 KiB
C
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/**************************************************************************//**
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* @file wdt.h
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* @version V3.00
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* $Revision: 7 $
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* $Date: 15/08/11 10:26a $
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* @brief M451 series WDT driver header file
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*
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* @note
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* Copyright (C) 2013~2015 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 Standard_Driver Standard Driver
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@{
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*/
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/** @addtogroup WDT_Driver WDT Driver
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@{
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*/
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/** @addtogroup WDT_EXPORTED_CONSTANTS WDT Exported Constants
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@{
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*/
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/*---------------------------------------------------------------------------------------------------------*/
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/* WDT Time-out Interval Period Constant Definitions */
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/*---------------------------------------------------------------------------------------------------------*/
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#define WDT_TIMEOUT_2POW4 (0UL << WDT_CTL_TOUTSEL_Pos) /*!< Setting WDT time-out interval to 2^4 * WDT clocks */
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#define WDT_TIMEOUT_2POW6 (1UL << WDT_CTL_TOUTSEL_Pos) /*!< Setting WDT time-out interval to 2^6 * WDT clocks */
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#define WDT_TIMEOUT_2POW8 (2UL << WDT_CTL_TOUTSEL_Pos) /*!< Setting WDT time-out interval to 2^8 * WDT clocks */
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#define WDT_TIMEOUT_2POW10 (3UL << WDT_CTL_TOUTSEL_Pos) /*!< Setting WDT time-out interval to 2^10 * WDT clocks */
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#define WDT_TIMEOUT_2POW12 (4UL << WDT_CTL_TOUTSEL_Pos) /*!< Setting WDT time-out interval to 2^12 * WDT clocks */
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#define WDT_TIMEOUT_2POW14 (5UL << WDT_CTL_TOUTSEL_Pos) /*!< Setting WDT time-out interval to 2^14 * WDT clocks */
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#define WDT_TIMEOUT_2POW16 (6UL << WDT_CTL_TOUTSEL_Pos) /*!< Setting WDT time-out interval to 2^16 * WDT clocks */
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#define WDT_TIMEOUT_2POW18 (7UL << WDT_CTL_TOUTSEL_Pos) /*!< Setting WDT time-out interval to 2^18 * WDT clocks */
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/*---------------------------------------------------------------------------------------------------------*/
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/* WDT Reset Delay Period Constant Definitions */
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/*---------------------------------------------------------------------------------------------------------*/
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#define WDT_RESET_DELAY_1026CLK (0UL << WDT_ALTCTL_RSTDSEL_Pos) /*!< Setting WDT reset delay period to 1026 * WDT clocks */
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#define WDT_RESET_DELAY_130CLK (1UL << WDT_ALTCTL_RSTDSEL_Pos) /*!< Setting WDT reset delay period to 130 * WDT clocks */
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#define WDT_RESET_DELAY_18CLK (2UL << WDT_ALTCTL_RSTDSEL_Pos) /*!< Setting WDT reset delay period to 18 * WDT clocks */
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#define WDT_RESET_DELAY_3CLK (3UL << WDT_ALTCTL_RSTDSEL_Pos) /*!< Setting WDT reset delay period to 3 * WDT clocks */
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/*@}*/ /* end of group WDT_EXPORTED_CONSTANTS */
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/** @addtogroup WDT_EXPORTED_FUNCTIONS WDT Exported Functions
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@{
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*/
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/**
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* @brief Clear WDT Reset System Flag
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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 macro clears WDT time-out reset system flag.
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*/
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#define WDT_CLEAR_RESET_FLAG() (WDT->CTL = (WDT->CTL & ~(WDT_CTL_IF_Msk | WDT_CTL_WKF_Msk)) | WDT_CTL_RSTF_Msk)
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/**
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* @brief Clear WDT Time-out Interrupt Flag
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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 macro clears WDT time-out interrupt flag.
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*/
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#define WDT_CLEAR_TIMEOUT_INT_FLAG() (WDT->CTL = (WDT->CTL & ~(WDT_CTL_RSTF_Msk | WDT_CTL_WKF_Msk)) | WDT_CTL_IF_Msk)
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/**
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* @brief Clear WDT Wake-up Flag
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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 macro clears WDT time-out wake-up system flag.
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*/
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#define WDT_CLEAR_TIMEOUT_WAKEUP_FLAG() (WDT->CTL = (WDT->CTL & ~(WDT_CTL_RSTF_Msk | WDT_CTL_IF_Msk)) | WDT_CTL_WKF_Msk)
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/**
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* @brief Get WDT Time-out Reset Flag
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*
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* @param None
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*
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* @retval 0 WDT time-out reset system did not occur
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* @retval 1 WDT time-out reset system occurred
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*
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* @details This macro indicates system has been reset by WDT time-out reset or not.
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*/
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#define WDT_GET_RESET_FLAG() ((WDT->CTL & WDT_CTL_RSTF_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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* @param None
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*
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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 indicates WDT time-out interrupt occurred or not.
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*/
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#define WDT_GET_TIMEOUT_INT_FLAG() ((WDT->CTL & WDT_CTL_IF_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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* @param None
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*
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* @retval 0 WDT time-out interrupt does not cause CPU wake-up
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* @retval 1 WDT time-out interrupt event cause CPU wake-up
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*
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* @details This macro indicates WDT time-out interrupt event has waked up system or not.
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*/
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#define WDT_GET_TIMEOUT_WAKEUP_FLAG() ((WDT->CTL & WDT_CTL_WKF_Msk)? 1 : 0)
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/**
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* @brief Reset WDT Counter
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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 macro is used to reset the internal 18-bit WDT up counter value.
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* @note If WDT is activated and time-out reset system function is enabled also, user should \n
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* reset the 18-bit WDT up counter value to avoid generate WDT time-out reset signal to \n
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* reset system before the WDT time-out reset delay period expires.
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*/
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#define WDT_RESET_COUNTER() (WDT->CTL = (WDT->CTL & ~(WDT_CTL_IF_Msk | WDT_CTL_WKF_Msk | WDT_CTL_RSTF_Msk)) | WDT_CTL_RSTCNT_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 will stop 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->CTL = 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 will enable the WDT time-out interrupt function.
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*/
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static __INLINE void WDT_EnableInt(void)
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{
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WDT->CTL |= WDT_CTL_INTEN_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 will disable the WDT time-out interrupt function.
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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 another write 1 clear bits
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WDT->CTL &= ~(WDT_CTL_INTEN_Msk | WDT_CTL_RSTF_Msk | WDT_CTL_IF_Msk | WDT_CTL_WKF_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 WDT_EXPORTED_FUNCTIONS */
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/*@}*/ /* end of group WDT_Driver */
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/*@}*/ /* end of group Standard_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 2013~2015 Nuvoton Technology Corp. ***/
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