219 lines
6.9 KiB
C
219 lines
6.9 KiB
C
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/**************************************************************************//**
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* @file wdt.h
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* @brief NUC980 series WDT driver header file
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*
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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_WDT_H__
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#define __NU_WDT_H__
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#include "nuc980.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 << 8) /*!< Setting WDT time-out interval to 2^4 * WDT clocks */
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#define WDT_TIMEOUT_2POW6 (1UL << 8) /*!< Setting WDT time-out interval to 2^6 * WDT clocks */
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#define WDT_TIMEOUT_2POW8 (2UL << 8) /*!< Setting WDT time-out interval to 2^8 * WDT clocks */
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#define WDT_TIMEOUT_2POW10 (3UL << 8) /*!< Setting WDT time-out interval to 2^10 * WDT clocks */
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#define WDT_TIMEOUT_2POW12 (4UL << 8) /*!< Setting WDT time-out interval to 2^12 * WDT clocks */
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#define WDT_TIMEOUT_2POW14 (5UL << 8) /*!< Setting WDT time-out interval to 2^14 * WDT clocks */
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#define WDT_TIMEOUT_2POW16 (6UL << 8) /*!< Setting WDT time-out interval to 2^16 * WDT clocks */
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#define WDT_TIMEOUT_2POW18 (7UL << 8) /*!< Setting WDT time-out interval to 2^18 * WDT clocks */
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#define WDT_TIMEOUT_2POW20 (8UL << 8) /*!< Setting WDT time-out interval to 2^20 * 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) /*!< Setting WDT reset delay period to 1026 * WDT clocks */
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#define WDT_RESET_DELAY_130CLK (1UL) /*!< Setting WDT reset delay period to 130 * WDT clocks */
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#define WDT_RESET_DELAY_18CLK (2UL) /*!< Setting WDT reset delay period to 18 * WDT clocks */
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#define WDT_RESET_DELAY_3CLK (3UL) /*!< Setting WDT reset delay period to 3 * WDT clocks */
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/*---------------------------------------------------------------------------------------------------------*/
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/* WDT Free Reset Counter Keyword Constant Definitions */
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/*---------------------------------------------------------------------------------------------------------*/
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#define WDT_FREE_RESET_COUNTER_KEY (0x00005AA5) /*!< Fill this value to WDT_RSTCNT register to free reset WDT counter */
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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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* \hideinitializer
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*/
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#define WDT_CLEAR_RESET_FLAG() outpw(REG_WDT_CTL, (inpw(REG_WDT_CTL) & ~0x28) | 0x04)
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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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* \hideinitializer
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*/
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#define WDT_CLEAR_TIMEOUT_INT_FLAG() outpw(REG_WDT_CTL, (inpw(REG_WDT_CTL) & ~0x24) | 0x08)
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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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* \hideinitializer
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*/
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#define WDT_CLEAR_TIMEOUT_WAKEUP_FLAG() outpw(REG_WDT_CTL, (inpw(REG_WDT_CTL) & ~0x0C) | 0x20)
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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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* \hideinitializer
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*/
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#define WDT_GET_RESET_FLAG() (inpw(REG_WDT_CTL) & 0x4 ? 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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* \hideinitializer
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*/
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#define WDT_GET_TIMEOUT_INT_FLAG() (inpw(REG_WDT_CTL) & 0x8 ? 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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* \hideinitializer
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*/
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#define WDT_GET_TIMEOUT_WAKEUP_FLAG() (inpw(REG_WDT_CTL) & 0x20 ? 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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* \hideinitializer
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*/
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#define WDT_RESET_COUNTER() outpw(REG_WDT_RSTCNT, WDT_FREE_RESET_COUNTER_KEY)
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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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outpw(REG_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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outpw(REG_WDT_CTL, inpw(REG_WDT_CTL) | 0x40);
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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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outpw(REG_WDT_CTL, (inpw(REG_WDT_CTL) & ~0x6C) | 0x04);
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return;
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}
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void WDT_Open(UINT32 u32TimeoutInterval, UINT32 u32ResetDelay, UINT32 u32EnableReset, UINT32 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 /* __NU_WDT_H__ */
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