diff options
Diffstat (limited to 'lib/hc32f460/driver/src/hc32f460_wdt.c')
| -rw-r--r-- | lib/hc32f460/driver/src/hc32f460_wdt.c | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/lib/hc32f460/driver/src/hc32f460_wdt.c b/lib/hc32f460/driver/src/hc32f460_wdt.c new file mode 100644 index 00000000..db1f1930 --- /dev/null +++ b/lib/hc32f460/driver/src/hc32f460_wdt.c @@ -0,0 +1,250 @@ +/*******************************************************************************
+ * 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)
+ *****************************************************************************/
|