1 /**************************************************************************//**
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4 * @brief Window Watchdog Timer(WWDT) driver header file
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6 * @copyright (C) 2016 Nuvoton Technology Corp. All rights reserved.
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7 *****************************************************************************/
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17 /** @addtogroup Standard_Driver Standard Driver
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21 /** @addtogroup WWDT_Driver WWDT Driver
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25 /** @addtogroup WWDT_EXPORTED_CONSTANTS WWDT Exported Constants
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28 /*---------------------------------------------------------------------------------------------------------*/
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29 /* WWDT Prescale Period Constant Definitions */
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30 /*---------------------------------------------------------------------------------------------------------*/
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31 #define WWDT_PRESCALER_1 (0 << WWDT_CTL_PSCSEL_Pos) /*!< Select max time-out period to 1 * (64*WWDT_CLK) \hideinitializer */
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32 #define WWDT_PRESCALER_2 (1 << WWDT_CTL_PSCSEL_Pos) /*!< Select max time-out period to 2 * (64*WWDT_CLK) \hideinitializer */
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33 #define WWDT_PRESCALER_4 (2 << WWDT_CTL_PSCSEL_Pos) /*!< Select max time-out period to 4 * (64*WWDT_CLK) \hideinitializer */
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34 #define WWDT_PRESCALER_8 (3 << WWDT_CTL_PSCSEL_Pos) /*!< Select max time-out period to 8 * (64*WWDT_CLK) \hideinitializer */
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35 #define WWDT_PRESCALER_16 (4 << WWDT_CTL_PSCSEL_Pos) /*!< Select max time-out period to 16 * (64*WWDT_CLK) \hideinitializer */
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36 #define WWDT_PRESCALER_32 (5 << WWDT_CTL_PSCSEL_Pos) /*!< Select max time-out period to 32 * (64*WWDT_CLK) \hideinitializer */
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37 #define WWDT_PRESCALER_64 (6 << WWDT_CTL_PSCSEL_Pos) /*!< Select max time-out period to 64 * (64*WWDT_CLK) \hideinitializer */
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38 #define WWDT_PRESCALER_128 (7 << WWDT_CTL_PSCSEL_Pos) /*!< Select max time-out period to 128 * (64*WWDT_CLK) \hideinitializer */
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39 #define WWDT_PRESCALER_192 (8 << WWDT_CTL_PSCSEL_Pos) /*!< Select max time-out period to 192 * (64*WWDT_CLK) \hideinitializer */
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40 #define WWDT_PRESCALER_256 (9 << WWDT_CTL_PSCSEL_Pos) /*!< Select max time-out period to 256 * (64*WWDT_CLK) \hideinitializer */
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41 #define WWDT_PRESCALER_384 (10 << WWDT_CTL_PSCSEL_Pos) /*!< Select max time-out period to 384 * (64*WWDT_CLK) \hideinitializer */
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42 #define WWDT_PRESCALER_512 (11 << WWDT_CTL_PSCSEL_Pos) /*!< Select max time-out period to 512 * (64*WWDT_CLK) \hideinitializer */
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43 #define WWDT_PRESCALER_768 (12 << WWDT_CTL_PSCSEL_Pos) /*!< Select max time-out period to 768 * (64*WWDT_CLK) \hideinitializer */
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44 #define WWDT_PRESCALER_1024 (13 << WWDT_CTL_PSCSEL_Pos) /*!< Select max time-out period to 1024 * (64*WWDT_CLK) \hideinitializer */
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45 #define WWDT_PRESCALER_1536 (14 << WWDT_CTL_PSCSEL_Pos) /*!< Select max time-out period to 1536 * (64*WWDT_CLK) \hideinitializer */
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46 #define WWDT_PRESCALER_2048 (15 << WWDT_CTL_PSCSEL_Pos) /*!< Select max time-out period to 2048 * (64*WWDT_CLK) \hideinitializer */
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48 /*---------------------------------------------------------------------------------------------------------*/
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49 /* WWDT Reload Counter Keyword Constant Definitions */
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50 /*---------------------------------------------------------------------------------------------------------*/
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51 #define WWDT_RELOAD_WORD (0x00005AA5) /*!< Fill this value to WWDT_RLDCNT register to reload WWDT counter \hideinitializer */
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53 /*@}*/ /* end of group WWDT_EXPORTED_CONSTANTS */
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56 /** @addtogroup WWDT_EXPORTED_FUNCTIONS WWDT Exported Functions
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61 * @brief Clear WWDT Reset System Flag
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67 * @details This macro is used to clear WWDT time-out reset system flag.
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70 #define WWDT_CLEAR_RESET_FLAG() (WWDT->STATUS = WWDT_STATUS_WWDTRF_Msk)
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73 * @brief Clear WWDT Compared Match Interrupt Flag
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79 * @details This macro is used to clear WWDT compared match interrupt flag.
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82 #define WWDT_CLEAR_INT_FLAG() (WWDT->STATUS = WWDT_STATUS_WWDTIF_Msk)
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85 * @brief Get WWDT Reset System Flag
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89 * @retval 0 WWDT time-out reset system did not occur
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90 * @retval 1 WWDT time-out reset system occurred
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92 * @details This macro is used to indicate system has been reset by WWDT time-out reset or not.
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95 #define WWDT_GET_RESET_FLAG() ((WWDT->STATUS & WWDT_STATUS_WWDTRF_Msk)? 1 : 0)
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98 * @brief Get WWDT Compared Match Interrupt Flag
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102 * @retval 0 WWDT compare match interrupt did not occur
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103 * @retval 1 WWDT compare match interrupt occurred
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105 * @details This macro is used to indicate WWDT counter value matches CMPDAT value or not.
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108 #define WWDT_GET_INT_FLAG() ((WWDT->STATUS & WWDT_STATUS_WWDTIF_Msk)? 1 : 0)
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111 * @brief Get WWDT Counter
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115 * @return WWDT Counter Value
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117 * @details This macro reflects the current WWDT counter value.
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120 #define WWDT_GET_COUNTER() (WWDT->CNT)
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123 * @brief Reload WWDT Counter
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129 * @details This macro is used to reload the WWDT counter value to 0x3F.
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130 * @note User can only write WWDT_RLDCNT register to reload WWDT counter value when current WWDT counter value \n
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131 * between 0 and CMPDAT value. If user writes WWDT_RLDCNT when current WWDT counter value is larger than CMPDAT, \n
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132 * WWDT reset signal will generate immediately to reset system.
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135 #define WWDT_RELOAD_COUNTER() (WWDT->RLDCNT = WWDT_RELOAD_WORD)
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137 void WWDT_Open(uint32_t u32PreScale, uint32_t u32CmpValue, uint32_t u32EnableInt);
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139 /*@}*/ /* end of group WWDT_EXPORTED_FUNCTIONS */
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141 /*@}*/ /* end of group WWDT_Driver */
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143 /*@}*/ /* end of group Standard_Driver */
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149 #endif /* __WWDT_H__ */
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151 /*** (C) COPYRIGHT 2016 Nuvoton Technology Corp. ***/
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