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/**************************************************************************//**
* @file wdt.h
* @brief NUC980 series WDT driver header file
*
* SPDX-License-Identifier: Apache-2.0
* @copyright (C) 2018 Nuvoton Technology Corp. All rights reserved.
*****************************************************************************/
#ifndef __NU_WDT_H__
#define __NU_WDT_H__
#include "nuc980.h"
#ifdef __cplusplus
extern "C"
{
#endif
/** @addtogroup Standard_Driver Standard Driver
@{
*/
/** @addtogroup WDT_Driver WDT Driver
@{
*/
/** @addtogroup WDT_EXPORTED_CONSTANTS WDT Exported Constants
@{
*/
/*---------------------------------------------------------------------------------------------------------*/
/* WDT Time-out Interval Period Constant Definitions */
/*---------------------------------------------------------------------------------------------------------*/
#define WDT_TIMEOUT_2POW4 (0UL << 8) /*!< Setting WDT time-out interval to 2^4 * WDT clocks */
#define WDT_TIMEOUT_2POW6 (1UL << 8) /*!< Setting WDT time-out interval to 2^6 * WDT clocks */
#define WDT_TIMEOUT_2POW8 (2UL << 8) /*!< Setting WDT time-out interval to 2^8 * WDT clocks */
#define WDT_TIMEOUT_2POW10 (3UL << 8) /*!< Setting WDT time-out interval to 2^10 * WDT clocks */
#define WDT_TIMEOUT_2POW12 (4UL << 8) /*!< Setting WDT time-out interval to 2^12 * WDT clocks */
#define WDT_TIMEOUT_2POW14 (5UL << 8) /*!< Setting WDT time-out interval to 2^14 * WDT clocks */
#define WDT_TIMEOUT_2POW16 (6UL << 8) /*!< Setting WDT time-out interval to 2^16 * WDT clocks */
#define WDT_TIMEOUT_2POW18 (7UL << 8) /*!< Setting WDT time-out interval to 2^18 * WDT clocks */
#define WDT_TIMEOUT_2POW20 (8UL << 8) /*!< Setting WDT time-out interval to 2^20 * WDT clocks */
/*---------------------------------------------------------------------------------------------------------*/
/* WDT Reset Delay Period Constant Definitions */
/*---------------------------------------------------------------------------------------------------------*/
#define WDT_RESET_DELAY_1026CLK (0UL) /*!< Setting WDT reset delay period to 1026 * WDT clocks */
#define WDT_RESET_DELAY_130CLK (1UL) /*!< Setting WDT reset delay period to 130 * WDT clocks */
#define WDT_RESET_DELAY_18CLK (2UL) /*!< Setting WDT reset delay period to 18 * WDT clocks */
#define WDT_RESET_DELAY_3CLK (3UL) /*!< Setting WDT reset delay period to 3 * WDT clocks */
/*---------------------------------------------------------------------------------------------------------*/
/* WDT Free Reset Counter Keyword Constant Definitions */
/*---------------------------------------------------------------------------------------------------------*/
#define WDT_FREE_RESET_COUNTER_KEY (0x00005AA5) /*!< Fill this value to WDT_RSTCNT register to free reset WDT counter */
/*@}*/ /* end of group WDT_EXPORTED_CONSTANTS */
/** @addtogroup WDT_EXPORTED_FUNCTIONS WDT Exported Functions
@{
*/
/**
* @brief Clear WDT Reset System Flag
*
* @param None
*
* @return None
*
* @details This macro clears WDT time-out reset system flag.
*
* \hideinitializer
*/
#define WDT_CLEAR_RESET_FLAG() outpw(REG_WDT_CTL, (inpw(REG_WDT_CTL) & ~0x28) | 0x04)
/**
* @brief Clear WDT Time-out Interrupt Flag
*
* @param None
*
* @return None
*
* @details This macro clears WDT time-out interrupt flag.
*
* \hideinitializer
*/
#define WDT_CLEAR_TIMEOUT_INT_FLAG() outpw(REG_WDT_CTL, (inpw(REG_WDT_CTL) & ~0x24) | 0x08)
/**
* @brief Clear WDT Wake-up Flag
*
* @param None
*
* @return None
*
* @details This macro clears WDT time-out wake-up system flag.
*
* \hideinitializer
*/
#define WDT_CLEAR_TIMEOUT_WAKEUP_FLAG() outpw(REG_WDT_CTL, (inpw(REG_WDT_CTL) & ~0x0C) | 0x20)
/**
* @brief Get WDT Time-out Reset Flag
*
* @param None
*
* @retval 0 WDT time-out reset system did not occur
* @retval 1 WDT time-out reset system occurred
*
* @details This macro indicates system has been reset by WDT time-out reset or not.
*
* \hideinitializer
*/
#define WDT_GET_RESET_FLAG() (inpw(REG_WDT_CTL) & 0x4 ? 1 : 0)
/**
* @brief Get WDT Time-out Interrupt Flag
*
* @param None
*
* @retval 0 WDT time-out interrupt did not occur
* @retval 1 WDT time-out interrupt occurred
*
* @details This macro indicates WDT time-out interrupt occurred or not.
*
* \hideinitializer
*/
#define WDT_GET_TIMEOUT_INT_FLAG() (inpw(REG_WDT_CTL) & 0x8 ? 1 : 0)
/**
* @brief Get WDT Time-out Wake-up Flag
*
* @param None
*
* @retval 0 WDT time-out interrupt does not cause CPU wake-up
* @retval 1 WDT time-out interrupt event cause CPU wake-up
*
* @details This macro indicates WDT time-out interrupt event has waked up system or not.
*
* \hideinitializer
*/
#define WDT_GET_TIMEOUT_WAKEUP_FLAG() (inpw(REG_WDT_CTL) & 0x20 ? 1 : 0)
/**
* @brief Reset WDT Counter
*
* @param None
*
* @return None
*
* @details This macro is used to reset the internal 18-bit WDT up counter value.
* @note If WDT is activated and time-out reset system function is enabled also, user should \n
* reset the 18-bit WDT up counter value to avoid generate WDT time-out reset signal to \n
* reset system before the WDT time-out reset delay period expires.
*
* \hideinitializer
*/
#define WDT_RESET_COUNTER() outpw(REG_WDT_RSTCNT, WDT_FREE_RESET_COUNTER_KEY)
/**
* @brief Stop WDT Counting
*
* @param None
*
* @return None
*
* @details This function will stop WDT counting and disable WDT module.
*/
static __inline void WDT_Close(void)
{
outpw(REG_WDT_CTL, 0);
return;
}
/**
* @brief Enable WDT Time-out Interrupt
*
* @param None
*
* @return None
*
* @details This function will enable the WDT time-out interrupt function.
*/
static __inline void WDT_EnableInt(void)
{
outpw(REG_WDT_CTL, inpw(REG_WDT_CTL) | 0x40);
return;
}
/**
* @brief Disable WDT Time-out Interrupt
*
* @param None
*
* @return None
*
* @details This function will disable the WDT time-out interrupt function.
*/
static __inline void WDT_DisableInt(void)
{
/* Do not touch another write 1 clear bits */
outpw(REG_WDT_CTL, (inpw(REG_WDT_CTL) & ~0x6C) | 0x04);
return;
}
void WDT_Open(UINT32 u32TimeoutInterval, UINT32 u32ResetDelay, UINT32 u32EnableReset, UINT32 u32EnableWakeup);
/*@}*/ /* end of group WDT_EXPORTED_FUNCTIONS */
/*@}*/ /* end of group WDT_Driver */
/*@}*/ /* end of group Standard_Driver */
#ifdef __cplusplus
}
#endif
#endif /* __NU_WDT_H__ */
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