Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | mjames | 1 | /** |
| 2 | ****************************************************************************** |
||
| 3 | * @file stm32f1xx_ll_iwdg.h |
||
| 4 | * @author MCD Application Team |
||
| 5 | * @brief Header file of IWDG LL module. |
||
| 6 | ****************************************************************************** |
||
| 7 | * @attention |
||
| 8 | * |
||
| 9 | * <h2><center>© Copyright (c) 2016 STMicroelectronics. |
||
| 10 | * All rights reserved.</center></h2> |
||
| 11 | * |
||
| 12 | * This software component is licensed by ST under BSD 3-Clause license, |
||
| 13 | * the "License"; You may not use this file except in compliance with the |
||
| 14 | * License. You may obtain a copy of the License at: |
||
| 15 | * opensource.org/licenses/BSD-3-Clause |
||
| 16 | * |
||
| 17 | ****************************************************************************** |
||
| 18 | */ |
||
| 19 | |||
| 20 | /* Define to prevent recursive inclusion -------------------------------------*/ |
||
| 21 | #ifndef STM32F1xx_LL_IWDG_H |
||
| 22 | #define STM32F1xx_LL_IWDG_H |
||
| 23 | |||
| 24 | #ifdef __cplusplus |
||
| 25 | extern "C" { |
||
| 26 | #endif |
||
| 27 | |||
| 28 | /* Includes ------------------------------------------------------------------*/ |
||
| 29 | #include "stm32f1xx.h" |
||
| 30 | |||
| 31 | /** @addtogroup STM32F1xx_LL_Driver |
||
| 32 | * @{ |
||
| 33 | */ |
||
| 34 | |||
| 35 | #if defined(IWDG) |
||
| 36 | |||
| 37 | /** @defgroup IWDG_LL IWDG |
||
| 38 | * @{ |
||
| 39 | */ |
||
| 40 | |||
| 41 | /* Private types -------------------------------------------------------------*/ |
||
| 42 | /* Private variables ---------------------------------------------------------*/ |
||
| 43 | |||
| 44 | /* Private constants ---------------------------------------------------------*/ |
||
| 45 | /** @defgroup IWDG_LL_Private_Constants IWDG Private Constants |
||
| 46 | * @{ |
||
| 47 | */ |
||
| 48 | #define LL_IWDG_KEY_RELOAD 0x0000AAAAU /*!< IWDG Reload Counter Enable */ |
||
| 49 | #define LL_IWDG_KEY_ENABLE 0x0000CCCCU /*!< IWDG Peripheral Enable */ |
||
| 50 | #define LL_IWDG_KEY_WR_ACCESS_ENABLE 0x00005555U /*!< IWDG KR Write Access Enable */ |
||
| 51 | #define LL_IWDG_KEY_WR_ACCESS_DISABLE 0x00000000U /*!< IWDG KR Write Access Disable */ |
||
| 52 | /** |
||
| 53 | * @} |
||
| 54 | */ |
||
| 55 | |||
| 56 | /* Private macros ------------------------------------------------------------*/ |
||
| 57 | |||
| 58 | /* Exported types ------------------------------------------------------------*/ |
||
| 59 | /* Exported constants --------------------------------------------------------*/ |
||
| 60 | /** @defgroup IWDG_LL_Exported_Constants IWDG Exported Constants |
||
| 61 | * @{ |
||
| 62 | */ |
||
| 63 | |||
| 64 | /** @defgroup IWDG_LL_EC_GET_FLAG Get Flags Defines |
||
| 65 | * @brief Flags defines which can be used with LL_IWDG_ReadReg function |
||
| 66 | * @{ |
||
| 67 | */ |
||
| 68 | #define LL_IWDG_SR_PVU IWDG_SR_PVU /*!< Watchdog prescaler value update */ |
||
| 69 | #define LL_IWDG_SR_RVU IWDG_SR_RVU /*!< Watchdog counter reload value update */ |
||
| 70 | /** |
||
| 71 | * @} |
||
| 72 | */ |
||
| 73 | |||
| 74 | /** @defgroup IWDG_LL_EC_PRESCALER Prescaler Divider |
||
| 75 | * @{ |
||
| 76 | */ |
||
| 77 | #define LL_IWDG_PRESCALER_4 0x00000000U /*!< Divider by 4 */ |
||
| 78 | #define LL_IWDG_PRESCALER_8 (IWDG_PR_PR_0) /*!< Divider by 8 */ |
||
| 79 | #define LL_IWDG_PRESCALER_16 (IWDG_PR_PR_1) /*!< Divider by 16 */ |
||
| 80 | #define LL_IWDG_PRESCALER_32 (IWDG_PR_PR_1 | IWDG_PR_PR_0) /*!< Divider by 32 */ |
||
| 81 | #define LL_IWDG_PRESCALER_64 (IWDG_PR_PR_2) /*!< Divider by 64 */ |
||
| 82 | #define LL_IWDG_PRESCALER_128 (IWDG_PR_PR_2 | IWDG_PR_PR_0) /*!< Divider by 128 */ |
||
| 83 | #define LL_IWDG_PRESCALER_256 (IWDG_PR_PR_2 | IWDG_PR_PR_1) /*!< Divider by 256 */ |
||
| 84 | /** |
||
| 85 | * @} |
||
| 86 | */ |
||
| 87 | |||
| 88 | /** |
||
| 89 | * @} |
||
| 90 | */ |
||
| 91 | |||
| 92 | /* Exported macro ------------------------------------------------------------*/ |
||
| 93 | /** @defgroup IWDG_LL_Exported_Macros IWDG Exported Macros |
||
| 94 | * @{ |
||
| 95 | */ |
||
| 96 | |||
| 97 | /** @defgroup IWDG_LL_EM_WRITE_READ Common Write and read registers Macros |
||
| 98 | * @{ |
||
| 99 | */ |
||
| 100 | |||
| 101 | /** |
||
| 102 | * @brief Write a value in IWDG register |
||
| 103 | * @param __INSTANCE__ IWDG Instance |
||
| 104 | * @param __REG__ Register to be written |
||
| 105 | * @param __VALUE__ Value to be written in the register |
||
| 106 | * @retval None |
||
| 107 | */ |
||
| 108 | #define LL_IWDG_WriteReg(__INSTANCE__, __REG__, __VALUE__) WRITE_REG(__INSTANCE__->__REG__, (__VALUE__)) |
||
| 109 | |||
| 110 | /** |
||
| 111 | * @brief Read a value in IWDG register |
||
| 112 | * @param __INSTANCE__ IWDG Instance |
||
| 113 | * @param __REG__ Register to be read |
||
| 114 | * @retval Register value |
||
| 115 | */ |
||
| 116 | #define LL_IWDG_ReadReg(__INSTANCE__, __REG__) READ_REG(__INSTANCE__->__REG__) |
||
| 117 | /** |
||
| 118 | * @} |
||
| 119 | */ |
||
| 120 | |||
| 121 | /** |
||
| 122 | * @} |
||
| 123 | */ |
||
| 124 | |||
| 125 | |||
| 126 | /* Exported functions --------------------------------------------------------*/ |
||
| 127 | /** @defgroup IWDG_LL_Exported_Functions IWDG Exported Functions |
||
| 128 | * @{ |
||
| 129 | */ |
||
| 130 | /** @defgroup IWDG_LL_EF_Configuration Configuration |
||
| 131 | * @{ |
||
| 132 | */ |
||
| 133 | |||
| 134 | /** |
||
| 135 | * @brief Start the Independent Watchdog |
||
| 136 | * @note Except if the hardware watchdog option is selected |
||
| 137 | * @rmtoll KR KEY LL_IWDG_Enable |
||
| 138 | * @param IWDGx IWDG Instance |
||
| 139 | * @retval None |
||
| 140 | */ |
||
| 141 | __STATIC_INLINE void LL_IWDG_Enable(IWDG_TypeDef *IWDGx) |
||
| 142 | { |
||
| 143 | WRITE_REG(IWDGx->KR, LL_IWDG_KEY_ENABLE); |
||
| 144 | } |
||
| 145 | |||
| 146 | /** |
||
| 147 | * @brief Reloads IWDG counter with value defined in the reload register |
||
| 148 | * @rmtoll KR KEY LL_IWDG_ReloadCounter |
||
| 149 | * @param IWDGx IWDG Instance |
||
| 150 | * @retval None |
||
| 151 | */ |
||
| 152 | __STATIC_INLINE void LL_IWDG_ReloadCounter(IWDG_TypeDef *IWDGx) |
||
| 153 | { |
||
| 154 | WRITE_REG(IWDGx->KR, LL_IWDG_KEY_RELOAD); |
||
| 155 | } |
||
| 156 | |||
| 157 | /** |
||
| 158 | * @brief Enable write access to IWDG_PR, IWDG_RLR and IWDG_WINR registers |
||
| 159 | * @rmtoll KR KEY LL_IWDG_EnableWriteAccess |
||
| 160 | * @param IWDGx IWDG Instance |
||
| 161 | * @retval None |
||
| 162 | */ |
||
| 163 | __STATIC_INLINE void LL_IWDG_EnableWriteAccess(IWDG_TypeDef *IWDGx) |
||
| 164 | { |
||
| 165 | WRITE_REG(IWDGx->KR, LL_IWDG_KEY_WR_ACCESS_ENABLE); |
||
| 166 | } |
||
| 167 | |||
| 168 | /** |
||
| 169 | * @brief Disable write access to IWDG_PR, IWDG_RLR and IWDG_WINR registers |
||
| 170 | * @rmtoll KR KEY LL_IWDG_DisableWriteAccess |
||
| 171 | * @param IWDGx IWDG Instance |
||
| 172 | * @retval None |
||
| 173 | */ |
||
| 174 | __STATIC_INLINE void LL_IWDG_DisableWriteAccess(IWDG_TypeDef *IWDGx) |
||
| 175 | { |
||
| 176 | WRITE_REG(IWDGx->KR, LL_IWDG_KEY_WR_ACCESS_DISABLE); |
||
| 177 | } |
||
| 178 | |||
| 179 | /** |
||
| 180 | * @brief Select the prescaler of the IWDG |
||
| 181 | * @rmtoll PR PR LL_IWDG_SetPrescaler |
||
| 182 | * @param IWDGx IWDG Instance |
||
| 183 | * @param Prescaler This parameter can be one of the following values: |
||
| 184 | * @arg @ref LL_IWDG_PRESCALER_4 |
||
| 185 | * @arg @ref LL_IWDG_PRESCALER_8 |
||
| 186 | * @arg @ref LL_IWDG_PRESCALER_16 |
||
| 187 | * @arg @ref LL_IWDG_PRESCALER_32 |
||
| 188 | * @arg @ref LL_IWDG_PRESCALER_64 |
||
| 189 | * @arg @ref LL_IWDG_PRESCALER_128 |
||
| 190 | * @arg @ref LL_IWDG_PRESCALER_256 |
||
| 191 | * @retval None |
||
| 192 | */ |
||
| 193 | __STATIC_INLINE void LL_IWDG_SetPrescaler(IWDG_TypeDef *IWDGx, uint32_t Prescaler) |
||
| 194 | { |
||
| 195 | WRITE_REG(IWDGx->PR, IWDG_PR_PR & Prescaler); |
||
| 196 | } |
||
| 197 | |||
| 198 | /** |
||
| 199 | * @brief Get the selected prescaler of the IWDG |
||
| 200 | * @rmtoll PR PR LL_IWDG_GetPrescaler |
||
| 201 | * @param IWDGx IWDG Instance |
||
| 202 | * @retval Returned value can be one of the following values: |
||
| 203 | * @arg @ref LL_IWDG_PRESCALER_4 |
||
| 204 | * @arg @ref LL_IWDG_PRESCALER_8 |
||
| 205 | * @arg @ref LL_IWDG_PRESCALER_16 |
||
| 206 | * @arg @ref LL_IWDG_PRESCALER_32 |
||
| 207 | * @arg @ref LL_IWDG_PRESCALER_64 |
||
| 208 | * @arg @ref LL_IWDG_PRESCALER_128 |
||
| 209 | * @arg @ref LL_IWDG_PRESCALER_256 |
||
| 210 | */ |
||
| 211 | __STATIC_INLINE uint32_t LL_IWDG_GetPrescaler(IWDG_TypeDef *IWDGx) |
||
| 212 | { |
||
| 213 | return (READ_REG(IWDGx->PR)); |
||
| 214 | } |
||
| 215 | |||
| 216 | /** |
||
| 217 | * @brief Specify the IWDG down-counter reload value |
||
| 218 | * @rmtoll RLR RL LL_IWDG_SetReloadCounter |
||
| 219 | * @param IWDGx IWDG Instance |
||
| 220 | * @param Counter Value between Min_Data=0 and Max_Data=0x0FFF |
||
| 221 | * @retval None |
||
| 222 | */ |
||
| 223 | __STATIC_INLINE void LL_IWDG_SetReloadCounter(IWDG_TypeDef *IWDGx, uint32_t Counter) |
||
| 224 | { |
||
| 225 | WRITE_REG(IWDGx->RLR, IWDG_RLR_RL & Counter); |
||
| 226 | } |
||
| 227 | |||
| 228 | /** |
||
| 229 | * @brief Get the specified IWDG down-counter reload value |
||
| 230 | * @rmtoll RLR RL LL_IWDG_GetReloadCounter |
||
| 231 | * @param IWDGx IWDG Instance |
||
| 232 | * @retval Value between Min_Data=0 and Max_Data=0x0FFF |
||
| 233 | */ |
||
| 234 | __STATIC_INLINE uint32_t LL_IWDG_GetReloadCounter(IWDG_TypeDef *IWDGx) |
||
| 235 | { |
||
| 236 | return (READ_REG(IWDGx->RLR)); |
||
| 237 | } |
||
| 238 | |||
| 239 | /** |
||
| 240 | * @} |
||
| 241 | */ |
||
| 242 | |||
| 243 | /** @defgroup IWDG_LL_EF_FLAG_Management FLAG_Management |
||
| 244 | * @{ |
||
| 245 | */ |
||
| 246 | |||
| 247 | /** |
||
| 248 | * @brief Check if flag Prescaler Value Update is set or not |
||
| 249 | * @rmtoll SR PVU LL_IWDG_IsActiveFlag_PVU |
||
| 250 | * @param IWDGx IWDG Instance |
||
| 251 | * @retval State of bit (1 or 0). |
||
| 252 | */ |
||
| 253 | __STATIC_INLINE uint32_t LL_IWDG_IsActiveFlag_PVU(IWDG_TypeDef *IWDGx) |
||
| 254 | { |
||
| 255 | return ((READ_BIT(IWDGx->SR, IWDG_SR_PVU) == (IWDG_SR_PVU)) ? 1UL : 0UL); |
||
| 256 | } |
||
| 257 | |||
| 258 | /** |
||
| 259 | * @brief Check if flag Reload Value Update is set or not |
||
| 260 | * @rmtoll SR RVU LL_IWDG_IsActiveFlag_RVU |
||
| 261 | * @param IWDGx IWDG Instance |
||
| 262 | * @retval State of bit (1 or 0). |
||
| 263 | */ |
||
| 264 | __STATIC_INLINE uint32_t LL_IWDG_IsActiveFlag_RVU(IWDG_TypeDef *IWDGx) |
||
| 265 | { |
||
| 266 | return ((READ_BIT(IWDGx->SR, IWDG_SR_RVU) == (IWDG_SR_RVU)) ? 1UL : 0UL); |
||
| 267 | } |
||
| 268 | |||
| 269 | /** |
||
| 270 | * @brief Check if flags Prescaler & Reload Value Update are reset or not |
||
| 271 | * @rmtoll SR PVU LL_IWDG_IsReady\n |
||
| 272 | * SR RVU LL_IWDG_IsReady |
||
| 273 | * @param IWDGx IWDG Instance |
||
| 274 | * @retval State of bits (1 or 0). |
||
| 275 | */ |
||
| 276 | __STATIC_INLINE uint32_t LL_IWDG_IsReady(IWDG_TypeDef *IWDGx) |
||
| 277 | { |
||
| 278 | return ((READ_BIT(IWDGx->SR, IWDG_SR_PVU | IWDG_SR_RVU) == 0U) ? 1UL : 0UL); |
||
| 279 | } |
||
| 280 | |||
| 281 | /** |
||
| 282 | * @} |
||
| 283 | */ |
||
| 284 | |||
| 285 | /** |
||
| 286 | * @} |
||
| 287 | */ |
||
| 288 | |||
| 289 | /** |
||
| 290 | * @} |
||
| 291 | */ |
||
| 292 | |||
| 293 | #endif /* IWDG */ |
||
| 294 | |||
| 295 | /** |
||
| 296 | * @} |
||
| 297 | */ |
||
| 298 | |||
| 299 | #ifdef __cplusplus |
||
| 300 | } |
||
| 301 | #endif |
||
| 302 | |||
| 303 | #endif /* STM32F1xx_LL_IWDG_H */ |
||
| 304 | |||
| 305 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |