diff options
Diffstat (limited to 'lib/hc32f460/driver/src/hc32f460_swdt.c')
| -rw-r--r-- | lib/hc32f460/driver/src/hc32f460_swdt.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/lib/hc32f460/driver/src/hc32f460_swdt.c b/lib/hc32f460/driver/src/hc32f460_swdt.c new file mode 100644 index 00000000..391193e3 --- /dev/null +++ b/lib/hc32f460/driver/src/hc32f460_swdt.c @@ -0,0 +1,166 @@ +/*******************************************************************************
+ * 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_swdt.c
+ **
+ ** A detailed description is available at
+ ** @link SwdtGroup Special Watchdog Counter description @endlink
+ **
+ ** - 2018-10-16 CDT First version for Device Driver Library of SWDT.
+ **
+ ******************************************************************************/
+
+/*******************************************************************************
+ * Include files
+ ******************************************************************************/
+#include "hc32f460_swdt.h"
+#include "hc32f460_utility.h"
+
+/**
+ *******************************************************************************
+ ** \addtogroup SwdtGroup
+ ******************************************************************************/
+//@{
+
+/*******************************************************************************
+ * Local type definitions ('typedef')
+ ******************************************************************************/
+
+/*******************************************************************************
+ * Local pre-processor symbols/macros ('#define')
+ ******************************************************************************/
+/*!< Parameter valid check for flag type */
+#define IS_VALID_FLAG_TYPE(x) \
+( (SwdtFlagCountUnderflow == (x)) || \
+ (SwdtFlagRefreshError == (x)))
+
+/*!< SWDT_RR register refresh key */
+#define SWDT_REFRESH_START_KEY ((uint16_t)0x0123)
+#define SWDT_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 SWDT refresh counter
+ **
+ ** \param [in] None
+ **
+ ** \retval Ok Process successfully done
+ **
+ ******************************************************************************/
+en_result_t SWDT_RefreshCounter(void)
+{
+ en_result_t enRet = Ok;
+
+ M4_SWDT->RR = SWDT_REFRESH_START_KEY;
+ M4_SWDT->RR = SWDT_REFRESH_END_KEY_;
+
+ return enRet;
+}
+
+/**
+ *******************************************************************************
+ ** \brief Get SWDT counter current count value
+ **
+ ** \param [in] None
+ **
+ ** \retval uint16_t SWDT counter current count value
+ **
+ ******************************************************************************/
+uint16_t SWDT_GetCountValue(void)
+{
+ return ((uint16_t)M4_SWDT->SR_f.CNT);
+}
+
+/**
+ *******************************************************************************
+ ** \brief Get SWDT flag status
+ **
+ ** \param [in] enFlag SWDT flag type
+ ** \arg SwdtFlagCountUnderflow Count underflow flag
+ ** \arg SwdtFlagRefreshError Refresh error flag
+ **
+ ** \retval Set Flag is set
+ ** \retval Reset Flag is reset
+ **
+ ******************************************************************************/
+en_flag_status_t SWDT_GetFlag(en_swdt_flag_type_t enFlag)
+{
+ en_flag_status_t enFlagSta = Reset;
+
+ /* Check parameters */
+ DDL_ASSERT(IS_VALID_FLAG_TYPE(enFlag));
+
+ switch (enFlag)
+ {
+ case SwdtFlagCountUnderflow:
+ enFlagSta = (en_flag_status_t)M4_SWDT->SR_f.UDF;
+ break;
+ case SwdtFlagRefreshError:
+ enFlagSta = (en_flag_status_t)M4_SWDT->SR_f.REF;
+ break;
+ default:
+ break;
+ }
+
+ return enFlagSta;
+}
+
+/**
+ *******************************************************************************
+ ** \brief Clear SWDT flag status
+ **
+ ** \param [in] enFlag SWDT flag type
+ ** \arg SwdtFlagCountUnderflow Count underflow flag
+ ** \arg SwdtFlagRefreshError Refresh error flag
+ **
+ ** \retval Ok Process successfully done
+ **
+ ******************************************************************************/
+en_result_t SWDT_ClearFlag(en_swdt_flag_type_t enFlag)
+{
+ en_result_t enRet = Ok;
+
+ /* Check parameters */
+ DDL_ASSERT(IS_VALID_FLAG_TYPE(enFlag));
+
+ switch (enFlag)
+ {
+ case SwdtFlagCountUnderflow:
+ M4_SWDT->SR_f.UDF = 0u;
+ break;
+ case SwdtFlagRefreshError:
+ M4_SWDT->SR_f.REF = 0u;
+ break;
+ default:
+ break;
+ }
+
+ return enRet;
+}
+
+//@} // SwdtGroup
+
+/******************************************************************************
+ * EOF (not truncated)
+ *****************************************************************************/
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