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/*******************************************************************************
* Copyright (C) 2020, Huada Semiconductor Co., Ltd. All rights reserved.
*
* This software component is licensed by HDSC under BSD 3-Clause license
* (the "License"); You may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
* opensource.org/licenses/BSD-3-Clause
*/
/******************************************************************************/
/** \file hc32f460_wdt.c
**
** A detailed description is available at
** @link WdtGroup Watchdog Counter description @endlink
**
** - 2018-10-18 CDT First version for Device Driver Library of WDT.
**
******************************************************************************/
/*******************************************************************************
* Include files
******************************************************************************/
#include "hc32f460_wdt.h"
#include "hc32f460_utility.h"
/**
*******************************************************************************
** \addtogroup WdtGroup
******************************************************************************/
//@{
/*******************************************************************************
* Local type definitions ('typedef')
******************************************************************************/
/*******************************************************************************
* Local pre-processor symbols/macros ('#define')
******************************************************************************/
/*!< Parameter validity check for count cycle */
#define IS_VALID_COUNT_CYCLE(x) \
( (WdtCountCycle256 == (x)) || \
(WdtCountCycle4096 == (x)) || \
(WdtCountCycle16384 == (x)) || \
(WdtCountCycle65536 == (x)))
/*!< Parameter validity check for clock division */
#define IS_VALID_CLOCK_DIV(x) \
( (WdtPclk3Div4 == (x)) || \
(WdtPclk3Div64 == (x)) || \
(WdtPclk3Div128 == (x)) || \
(WdtPclk3Div256 == (x)) || \
(WdtPclk3Div512 == (x)) || \
(WdtPclk3Div1024 == (x)) || \
(WdtPclk3Div2048 == (x)) || \
(WdtPclk3Div8192 == (x)))
/*!< Parameter validity check for allow refresh percent range */
#define IS_VALID_ALLOW_REFRESH_RANGE(x) \
( (WdtRefresh100Pct == (x)) || \
(WdtRefresh0To25Pct == (x)) || \
(WdtRefresh25To50Pct == (x)) || \
(WdtRefresh0To50Pct == (x)) || \
(WdtRefresh50To75Pct == (x)) || \
(WdtRefresh0To25PctAnd50To75Pct == (x)) || \
(WdtRefresh25To75Pct == (x)) || \
(WdtRefresh0To75Pct == (x)) || \
(WdtRefresh75To100Pct == (x)) || \
(WdtRefresh0To25PctAnd75To100Pct == (x)) || \
(WdtRefresh25To50PctAnd75To100Pct == (x)) || \
(WdtRefresh0To50PctAnd75To100Pct == (x)) || \
(WdtRefresh50To100Pct == (x)) || \
(WdtRefresh0To25PctAnd50To100Pct == (x)) || \
(WdtRefresh25To100Pct == (x)) || \
(WdtRefresh0To100Pct == (x)))
/*!< Parameter validity check for event request type */
#define IS_VALID_EVENT_REQUEST_TYPE(x) \
( (WdtTriggerInterruptRequest == (x)) || \
(WdtTriggerResetRequest == (x)))
/*!< Parameter validity check for flag type */
#define IS_VALID_FLAG_TYPE(x) \
( (WdtFlagCountUnderflow == (x)) || \
(WdtFlagRefreshError == (x)))
/*!< WDT_RR register refresh key */
#define WDT_REFRESH_START_KEY ((uint16_t)0x0123)
#define WDT_REFRESH_END_KEY ((uint16_t)0x3210)
/*******************************************************************************
* Global variable definitions (declared in header file with 'extern')
******************************************************************************/
/*******************************************************************************
* Local function prototypes ('static')
******************************************************************************/
/*******************************************************************************
* Local variable definitions ('static')
******************************************************************************/
/*******************************************************************************
* Function implementation - global ('extern') and local ('static')
******************************************************************************/
/**
*******************************************************************************
** \brief Initialize WDT function
**
** \param [in] pstcWdtInit Pointer to WDT init configuration
** \arg See the struct #stc_wdt_init_t
**
** \retval Ok Process successfully done
** \retval Error Parameter error
**
******************************************************************************/
en_result_t WDT_Init(const stc_wdt_init_t *pstcWdtInit)
{
en_result_t enRet = Ok;
uint32_t regTemp;
if (NULL == pstcWdtInit)
{
enRet = Error;
}
else
{
/* Check parameters */
DDL_ASSERT(IS_VALID_COUNT_CYCLE(pstcWdtInit->enCountCycle));
DDL_ASSERT(IS_VALID_CLOCK_DIV(pstcWdtInit->enClkDiv));
DDL_ASSERT(IS_VALID_ALLOW_REFRESH_RANGE(pstcWdtInit->enRefreshRange));
DDL_ASSERT(IS_FUNCTIONAL_STATE(pstcWdtInit->enSleepModeCountEn));
DDL_ASSERT(IS_VALID_EVENT_REQUEST_TYPE(pstcWdtInit->enRequestType));
/* software start mode */
regTemp = ((((uint32_t)pstcWdtInit->enRequestType) << 31) | \
(((uint32_t)(bool)(!pstcWdtInit->enSleepModeCountEn)) << 16) | \
(((uint32_t)pstcWdtInit->enRefreshRange) << 8) | \
(((uint32_t)pstcWdtInit->enClkDiv) << 4) | \
((uint32_t)pstcWdtInit->enCountCycle));
/* store the new value */
M4_WDT->CR = regTemp;
}
return enRet;
}
/**
*******************************************************************************
** \brief WDT refresh counter(First refresh start count when software start)
**
** \param [in] None
**
** \retval Ok Process successfully done
**
******************************************************************************/
en_result_t WDT_RefreshCounter(void)
{
en_result_t enRet = Ok;
M4_WDT->RR = WDT_REFRESH_START_KEY;
M4_WDT->RR = WDT_REFRESH_END_KEY;
return enRet;
}
/**
*******************************************************************************
** \brief Get WDT counter current count value
**
** \param [in] None
**
** \retval uint16_t WDT counter current count value
**
******************************************************************************/
uint16_t WDT_GetCountValue(void)
{
return ((uint16_t)M4_WDT->SR_f.CNT);
}
/**
*******************************************************************************
** \brief Get WDT flag status
**
** \param [in] enFlag WDT flag type
** \arg WdtFlagCountUnderflow Count underflow flag
** \arg WdtFlagRefreshError Refresh error flag
**
** \retval Set Flag is set
** \retval Reset Flag is reset
**
******************************************************************************/
en_flag_status_t WDT_GetFlag(en_wdt_flag_type_t enFlag)
{
en_flag_status_t enFlagSta = Reset;
/* Check parameters */
DDL_ASSERT(IS_VALID_FLAG_TYPE(enFlag));
switch (enFlag)
{
case WdtFlagCountUnderflow:
enFlagSta = (en_flag_status_t)M4_WDT->SR_f.UDF;
break;
case WdtFlagRefreshError:
enFlagSta = (en_flag_status_t)M4_WDT->SR_f.REF;
break;
default:
break;
}
return enFlagSta;
}
/**
*******************************************************************************
** \brief Clear WDT flag status
**
** \param [in] enFlag WDT flag type
** \arg WdtFlagCountUnderflow Count underflow flag
** \arg WdtFlagRefreshError Refresh error flag
**
** \retval Ok Process successfully done
**
******************************************************************************/
en_result_t WDT_ClearFlag(en_wdt_flag_type_t enFlag)
{
en_result_t enRet = Ok;
/* Check parameters */
DDL_ASSERT(IS_VALID_FLAG_TYPE(enFlag));
switch (enFlag)
{
case WdtFlagCountUnderflow:
M4_WDT->SR_f.UDF = 0u;
break;
case WdtFlagRefreshError:
M4_WDT->SR_f.REF = 0u;
break;
default:
break;
}
return enRet;
}
//@} // WdtGroup
/******************************************************************************
* EOF (not truncated)
*****************************************************************************/
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