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| 2 | mjames | 1 | /** |
| 2 | ****************************************************************************** |
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| 3 | * @file stm32f0xx_ll_iwdg.h |
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| 4 | * @author MCD Application Team |
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| 5 | * @brief Header file of IWDG LL module. |
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| 6 | ****************************************************************************** |
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| 7 | * @attention |
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| 8 | * |
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| 9 | * <h2><center>© Copyright (c) 2016 STMicroelectronics. |
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| 10 | * All rights reserved.</center></h2> |
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| 11 | * |
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| 12 | * This software component is licensed by ST under BSD 3-Clause license, |
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| 13 | * the "License"; You may not use this file except in compliance with the |
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| 14 | * License. You may obtain a copy of the License at: |
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| 15 | * opensource.org/licenses/BSD-3-Clause |
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| 16 | * |
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| 17 | ****************************************************************************** |
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| 18 | */ |
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| 19 | |||
| 20 | /* Define to prevent recursive inclusion -------------------------------------*/ |
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| 21 | #ifndef STM32F0xx_LL_IWDG_H |
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| 22 | #define STM32F0xx_LL_IWDG_H |
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| 23 | |||
| 24 | #ifdef __cplusplus |
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| 25 | extern "C" { |
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| 26 | #endif |
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| 27 | |||
| 28 | /* Includes ------------------------------------------------------------------*/ |
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| 29 | #include "stm32f0xx.h" |
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| 30 | |||
| 31 | /** @addtogroup STM32F0xx_LL_Driver |
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| 32 | * @{ |
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| 33 | */ |
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| 34 | |||
| 35 | #if defined(IWDG) |
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| 36 | |||
| 37 | /** @defgroup IWDG_LL IWDG |
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| 38 | * @{ |
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| 39 | */ |
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| 40 | |||
| 41 | /* Private types -------------------------------------------------------------*/ |
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| 42 | /* Private variables ---------------------------------------------------------*/ |
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| 43 | |||
| 44 | /* Private constants ---------------------------------------------------------*/ |
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| 45 | /** @defgroup IWDG_LL_Private_Constants IWDG Private Constants |
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| 46 | * @{ |
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| 47 | */ |
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| 48 | #define LL_IWDG_KEY_RELOAD 0x0000AAAAU /*!< IWDG Reload Counter Enable */ |
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| 49 | #define LL_IWDG_KEY_ENABLE 0x0000CCCCU /*!< IWDG Peripheral Enable */ |
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| 50 | #define LL_IWDG_KEY_WR_ACCESS_ENABLE 0x00005555U /*!< IWDG KR Write Access Enable */ |
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| 51 | #define LL_IWDG_KEY_WR_ACCESS_DISABLE 0x00000000U /*!< IWDG KR Write Access Disable */ |
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| 52 | /** |
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| 53 | * @} |
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| 54 | */ |
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| 55 | |||
| 56 | /* Private macros ------------------------------------------------------------*/ |
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| 57 | |||
| 58 | /* Exported types ------------------------------------------------------------*/ |
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| 59 | /* Exported constants --------------------------------------------------------*/ |
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| 60 | /** @defgroup IWDG_LL_Exported_Constants IWDG Exported Constants |
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| 61 | * @{ |
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| 62 | */ |
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| 63 | |||
| 64 | /** @defgroup IWDG_LL_EC_GET_FLAG Get Flags Defines |
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| 65 | * @brief Flags defines which can be used with LL_IWDG_ReadReg function |
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| 66 | * @{ |
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| 67 | */ |
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| 68 | #define LL_IWDG_SR_PVU IWDG_SR_PVU /*!< Watchdog prescaler value update */ |
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| 69 | #define LL_IWDG_SR_RVU IWDG_SR_RVU /*!< Watchdog counter reload value update */ |
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| 70 | #define LL_IWDG_SR_WVU IWDG_SR_WVU /*!< Watchdog counter window value update */ |
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| 71 | /** |
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| 72 | * @} |
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| 73 | */ |
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| 74 | |||
| 75 | /** @defgroup IWDG_LL_EC_PRESCALER Prescaler Divider |
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| 76 | * @{ |
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| 77 | */ |
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| 78 | #define LL_IWDG_PRESCALER_4 0x00000000U /*!< Divider by 4 */ |
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| 79 | #define LL_IWDG_PRESCALER_8 (IWDG_PR_PR_0) /*!< Divider by 8 */ |
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| 80 | #define LL_IWDG_PRESCALER_16 (IWDG_PR_PR_1) /*!< Divider by 16 */ |
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| 81 | #define LL_IWDG_PRESCALER_32 (IWDG_PR_PR_1 | IWDG_PR_PR_0) /*!< Divider by 32 */ |
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| 82 | #define LL_IWDG_PRESCALER_64 (IWDG_PR_PR_2) /*!< Divider by 64 */ |
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| 83 | #define LL_IWDG_PRESCALER_128 (IWDG_PR_PR_2 | IWDG_PR_PR_0) /*!< Divider by 128 */ |
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| 84 | #define LL_IWDG_PRESCALER_256 (IWDG_PR_PR_2 | IWDG_PR_PR_1) /*!< Divider by 256 */ |
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| 85 | /** |
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| 86 | * @} |
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| 87 | */ |
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| 88 | |||
| 89 | /** |
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| 90 | * @} |
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| 91 | */ |
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| 92 | |||
| 93 | /* Exported macro ------------------------------------------------------------*/ |
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| 94 | /** @defgroup IWDG_LL_Exported_Macros IWDG Exported Macros |
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| 95 | * @{ |
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| 96 | */ |
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| 97 | |||
| 98 | /** @defgroup IWDG_LL_EM_WRITE_READ Common Write and read registers Macros |
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| 99 | * @{ |
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| 100 | */ |
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| 101 | |||
| 102 | /** |
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| 103 | * @brief Write a value in IWDG register |
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| 104 | * @param __INSTANCE__ IWDG Instance |
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| 105 | * @param __REG__ Register to be written |
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| 106 | * @param __VALUE__ Value to be written in the register |
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| 107 | * @retval None |
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| 108 | */ |
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| 109 | #define LL_IWDG_WriteReg(__INSTANCE__, __REG__, __VALUE__) WRITE_REG(__INSTANCE__->__REG__, (__VALUE__)) |
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| 110 | |||
| 111 | /** |
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| 112 | * @brief Read a value in IWDG register |
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| 113 | * @param __INSTANCE__ IWDG Instance |
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| 114 | * @param __REG__ Register to be read |
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| 115 | * @retval Register value |
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| 116 | */ |
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| 117 | #define LL_IWDG_ReadReg(__INSTANCE__, __REG__) READ_REG(__INSTANCE__->__REG__) |
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| 118 | /** |
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| 119 | * @} |
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| 120 | */ |
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| 121 | |||
| 122 | /** |
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| 123 | * @} |
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| 124 | */ |
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| 125 | |||
| 126 | |||
| 127 | /* Exported functions --------------------------------------------------------*/ |
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| 128 | /** @defgroup IWDG_LL_Exported_Functions IWDG Exported Functions |
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| 129 | * @{ |
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| 130 | */ |
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| 131 | /** @defgroup IWDG_LL_EF_Configuration Configuration |
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| 132 | * @{ |
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| 133 | */ |
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| 134 | |||
| 135 | /** |
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| 136 | * @brief Start the Independent Watchdog |
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| 137 | * @note Except if the hardware watchdog option is selected |
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| 138 | * @rmtoll KR KEY LL_IWDG_Enable |
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| 139 | * @param IWDGx IWDG Instance |
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| 140 | * @retval None |
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| 141 | */ |
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| 142 | __STATIC_INLINE void LL_IWDG_Enable(IWDG_TypeDef *IWDGx) |
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| 143 | { |
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| 144 | WRITE_REG(IWDGx->KR, LL_IWDG_KEY_ENABLE); |
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| 145 | } |
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| 146 | |||
| 147 | /** |
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| 148 | * @brief Reloads IWDG counter with value defined in the reload register |
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| 149 | * @rmtoll KR KEY LL_IWDG_ReloadCounter |
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| 150 | * @param IWDGx IWDG Instance |
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| 151 | * @retval None |
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| 152 | */ |
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| 153 | __STATIC_INLINE void LL_IWDG_ReloadCounter(IWDG_TypeDef *IWDGx) |
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| 154 | { |
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| 155 | WRITE_REG(IWDGx->KR, LL_IWDG_KEY_RELOAD); |
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| 156 | } |
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| 157 | |||
| 158 | /** |
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| 159 | * @brief Enable write access to IWDG_PR, IWDG_RLR and IWDG_WINR registers |
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| 160 | * @rmtoll KR KEY LL_IWDG_EnableWriteAccess |
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| 161 | * @param IWDGx IWDG Instance |
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| 162 | * @retval None |
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| 163 | */ |
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| 164 | __STATIC_INLINE void LL_IWDG_EnableWriteAccess(IWDG_TypeDef *IWDGx) |
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| 165 | { |
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| 166 | WRITE_REG(IWDGx->KR, LL_IWDG_KEY_WR_ACCESS_ENABLE); |
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| 167 | } |
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| 168 | |||
| 169 | /** |
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| 170 | * @brief Disable write access to IWDG_PR, IWDG_RLR and IWDG_WINR registers |
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| 171 | * @rmtoll KR KEY LL_IWDG_DisableWriteAccess |
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| 172 | * @param IWDGx IWDG Instance |
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| 173 | * @retval None |
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| 174 | */ |
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| 175 | __STATIC_INLINE void LL_IWDG_DisableWriteAccess(IWDG_TypeDef *IWDGx) |
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| 176 | { |
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| 177 | WRITE_REG(IWDGx->KR, LL_IWDG_KEY_WR_ACCESS_DISABLE); |
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| 178 | } |
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| 179 | |||
| 180 | /** |
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| 181 | * @brief Select the prescaler of the IWDG |
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| 182 | * @rmtoll PR PR LL_IWDG_SetPrescaler |
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| 183 | * @param IWDGx IWDG Instance |
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| 184 | * @param Prescaler This parameter can be one of the following values: |
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| 185 | * @arg @ref LL_IWDG_PRESCALER_4 |
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| 186 | * @arg @ref LL_IWDG_PRESCALER_8 |
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| 187 | * @arg @ref LL_IWDG_PRESCALER_16 |
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| 188 | * @arg @ref LL_IWDG_PRESCALER_32 |
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| 189 | * @arg @ref LL_IWDG_PRESCALER_64 |
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| 190 | * @arg @ref LL_IWDG_PRESCALER_128 |
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| 191 | * @arg @ref LL_IWDG_PRESCALER_256 |
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| 192 | * @retval None |
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| 193 | */ |
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| 194 | __STATIC_INLINE void LL_IWDG_SetPrescaler(IWDG_TypeDef *IWDGx, uint32_t Prescaler) |
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| 195 | { |
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| 196 | WRITE_REG(IWDGx->PR, IWDG_PR_PR & Prescaler); |
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| 197 | } |
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| 198 | |||
| 199 | /** |
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| 200 | * @brief Get the selected prescaler of the IWDG |
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| 201 | * @rmtoll PR PR LL_IWDG_GetPrescaler |
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| 202 | * @param IWDGx IWDG Instance |
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| 203 | * @retval Returned value can be one of the following values: |
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| 204 | * @arg @ref LL_IWDG_PRESCALER_4 |
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| 205 | * @arg @ref LL_IWDG_PRESCALER_8 |
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| 206 | * @arg @ref LL_IWDG_PRESCALER_16 |
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| 207 | * @arg @ref LL_IWDG_PRESCALER_32 |
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| 208 | * @arg @ref LL_IWDG_PRESCALER_64 |
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| 209 | * @arg @ref LL_IWDG_PRESCALER_128 |
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| 210 | * @arg @ref LL_IWDG_PRESCALER_256 |
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| 211 | */ |
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| 212 | __STATIC_INLINE uint32_t LL_IWDG_GetPrescaler(IWDG_TypeDef *IWDGx) |
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| 213 | { |
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| 214 | return (READ_REG(IWDGx->PR)); |
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| 215 | } |
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| 216 | |||
| 217 | /** |
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| 218 | * @brief Specify the IWDG down-counter reload value |
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| 219 | * @rmtoll RLR RL LL_IWDG_SetReloadCounter |
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| 220 | * @param IWDGx IWDG Instance |
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| 221 | * @param Counter Value between Min_Data=0 and Max_Data=0x0FFF |
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| 222 | * @retval None |
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| 223 | */ |
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| 224 | __STATIC_INLINE void LL_IWDG_SetReloadCounter(IWDG_TypeDef *IWDGx, uint32_t Counter) |
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| 225 | { |
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| 226 | WRITE_REG(IWDGx->RLR, IWDG_RLR_RL & Counter); |
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| 227 | } |
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| 228 | |||
| 229 | /** |
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| 230 | * @brief Get the specified IWDG down-counter reload value |
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| 231 | * @rmtoll RLR RL LL_IWDG_GetReloadCounter |
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| 232 | * @param IWDGx IWDG Instance |
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| 233 | * @retval Value between Min_Data=0 and Max_Data=0x0FFF |
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| 234 | */ |
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| 235 | __STATIC_INLINE uint32_t LL_IWDG_GetReloadCounter(IWDG_TypeDef *IWDGx) |
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| 236 | { |
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| 237 | return (READ_REG(IWDGx->RLR)); |
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| 238 | } |
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| 239 | |||
| 240 | /** |
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| 241 | * @brief Specify high limit of the window value to be compared to the down-counter. |
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| 242 | * @rmtoll WINR WIN LL_IWDG_SetWindow |
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| 243 | * @param IWDGx IWDG Instance |
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| 244 | * @param Window Value between Min_Data=0 and Max_Data=0x0FFF |
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| 245 | * @retval None |
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| 246 | */ |
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| 247 | __STATIC_INLINE void LL_IWDG_SetWindow(IWDG_TypeDef *IWDGx, uint32_t Window) |
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| 248 | { |
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| 249 | WRITE_REG(IWDGx->WINR, IWDG_WINR_WIN & Window); |
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| 250 | } |
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| 251 | |||
| 252 | /** |
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| 253 | * @brief Get the high limit of the window value specified. |
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| 254 | * @rmtoll WINR WIN LL_IWDG_GetWindow |
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| 255 | * @param IWDGx IWDG Instance |
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| 256 | * @retval Value between Min_Data=0 and Max_Data=0x0FFF |
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| 257 | */ |
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| 258 | __STATIC_INLINE uint32_t LL_IWDG_GetWindow(IWDG_TypeDef *IWDGx) |
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| 259 | { |
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| 260 | return (READ_REG(IWDGx->WINR)); |
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| 261 | } |
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| 262 | |||
| 263 | /** |
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| 264 | * @} |
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| 265 | */ |
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| 266 | |||
| 267 | /** @defgroup IWDG_LL_EF_FLAG_Management FLAG_Management |
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| 268 | * @{ |
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| 269 | */ |
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| 270 | |||
| 271 | /** |
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| 272 | * @brief Check if flag Prescaler Value Update is set or not |
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| 273 | * @rmtoll SR PVU LL_IWDG_IsActiveFlag_PVU |
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| 274 | * @param IWDGx IWDG Instance |
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| 275 | * @retval State of bit (1 or 0). |
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| 276 | */ |
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| 277 | __STATIC_INLINE uint32_t LL_IWDG_IsActiveFlag_PVU(IWDG_TypeDef *IWDGx) |
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| 278 | { |
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| 279 | return ((READ_BIT(IWDGx->SR, IWDG_SR_PVU) == (IWDG_SR_PVU)) ? 1UL : 0UL); |
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| 280 | } |
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| 281 | |||
| 282 | /** |
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| 283 | * @brief Check if flag Reload Value Update is set or not |
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| 284 | * @rmtoll SR RVU LL_IWDG_IsActiveFlag_RVU |
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| 285 | * @param IWDGx IWDG Instance |
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| 286 | * @retval State of bit (1 or 0). |
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| 287 | */ |
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| 288 | __STATIC_INLINE uint32_t LL_IWDG_IsActiveFlag_RVU(IWDG_TypeDef *IWDGx) |
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| 289 | { |
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| 290 | return ((READ_BIT(IWDGx->SR, IWDG_SR_RVU) == (IWDG_SR_RVU)) ? 1UL : 0UL); |
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| 291 | } |
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| 292 | |||
| 293 | /** |
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| 294 | * @brief Check if flag Window Value Update is set or not |
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| 295 | * @rmtoll SR WVU LL_IWDG_IsActiveFlag_WVU |
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| 296 | * @param IWDGx IWDG Instance |
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| 297 | * @retval State of bit (1 or 0). |
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| 298 | */ |
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| 299 | __STATIC_INLINE uint32_t LL_IWDG_IsActiveFlag_WVU(IWDG_TypeDef *IWDGx) |
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| 300 | { |
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| 301 | return ((READ_BIT(IWDGx->SR, IWDG_SR_WVU) == (IWDG_SR_WVU)) ? 1UL : 0UL); |
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| 302 | } |
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| 303 | |||
| 304 | /** |
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| 305 | * @brief Check if all flags Prescaler, Reload & Window Value Update are reset or not |
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| 306 | * @rmtoll SR PVU LL_IWDG_IsReady\n |
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| 307 | * SR WVU LL_IWDG_IsReady\n |
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| 308 | * SR RVU LL_IWDG_IsReady |
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| 309 | * @param IWDGx IWDG Instance |
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| 310 | * @retval State of bits (1 or 0). |
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| 311 | */ |
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| 312 | __STATIC_INLINE uint32_t LL_IWDG_IsReady(IWDG_TypeDef *IWDGx) |
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| 313 | { |
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| 314 | return ((READ_BIT(IWDGx->SR, IWDG_SR_PVU | IWDG_SR_RVU | IWDG_SR_WVU) == 0U) ? 1UL : 0UL); |
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| 315 | } |
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| 316 | |||
| 317 | /** |
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| 318 | * @} |
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| 319 | */ |
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| 320 | |||
| 321 | |||
| 322 | /** |
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| 323 | * @} |
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| 324 | */ |
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| 325 | |||
| 326 | /** |
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| 327 | * @} |
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| 328 | */ |
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| 329 | |||
| 330 | #endif /* IWDG */ |
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| 331 | |||
| 332 | /** |
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| 333 | * @} |
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| 334 | */ |
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| 335 | |||
| 336 | #ifdef __cplusplus |
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| 337 | } |
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| 338 | #endif |
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| 339 | |||
| 340 | #endif /* STM32F0xx_LL_IWDG_H */ |
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| 341 | |||
| 342 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |