| /** |
| ****************************************************************************** |
| * @file stm32l0xx_hal_iwdg.h |
| * @author MCD Application Team |
| * @brief Header file of IWDG HAL module. |
| ****************************************************************************** |
| * @attention |
| * |
| * <h2><center>© Copyright (c) 2016 STMicroelectronics. |
| * All rights reserved.</center></h2> |
| * |
| * This software component is licensed by ST 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 |
| * |
| ****************************************************************************** |
| */ |
| |
| /* Define to prevent recursive inclusion -------------------------------------*/ |
| #ifndef STM32L0xx_HAL_IWDG_H |
| #define STM32L0xx_HAL_IWDG_H |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* Includes ------------------------------------------------------------------*/ |
| #include "stm32l0xx_hal_def.h" |
| |
| /** @addtogroup STM32L0xx_HAL_Driver |
| * @{ |
| */ |
| |
| /** @defgroup IWDG IWDG |
| * @{ |
| */ |
| |
| /* Exported types ------------------------------------------------------------*/ |
| /** @defgroup IWDG_Exported_Types IWDG Exported Types |
| * @{ |
| */ |
| |
| /** |
| * @brief IWDG Init structure definition |
| */ |
| typedef struct |
| { |
| uint32_t Prescaler; /*!< Select the prescaler of the IWDG. |
| This parameter can be a value of @ref IWDG_Prescaler */ |
| |
| uint32_t Reload; /*!< Specifies the IWDG down-counter reload value. |
| This parameter must be a number between Min_Data = 0 and Max_Data = 0x0FFF */ |
| |
| uint32_t Window; /*!< Specifies the window value to be compared to the down-counter. |
| This parameter must be a number between Min_Data = 0 and Max_Data = 0x0FFF */ |
| |
| } IWDG_InitTypeDef; |
| |
| /** |
| * @brief IWDG Handle Structure definition |
| */ |
| typedef struct |
| { |
| IWDG_TypeDef *Instance; /*!< Register base address */ |
| |
| IWDG_InitTypeDef Init; /*!< IWDG required parameters */ |
| } IWDG_HandleTypeDef; |
| |
| |
| /** |
| * @} |
| */ |
| |
| /* Exported constants --------------------------------------------------------*/ |
| /** @defgroup IWDG_Exported_Constants IWDG Exported Constants |
| * @{ |
| */ |
| |
| /** @defgroup IWDG_Prescaler IWDG Prescaler |
| * @{ |
| */ |
| #define IWDG_PRESCALER_4 0x00000000u /*!< IWDG prescaler set to 4 */ |
| #define IWDG_PRESCALER_8 IWDG_PR_PR_0 /*!< IWDG prescaler set to 8 */ |
| #define IWDG_PRESCALER_16 IWDG_PR_PR_1 /*!< IWDG prescaler set to 16 */ |
| #define IWDG_PRESCALER_32 (IWDG_PR_PR_1 | IWDG_PR_PR_0) /*!< IWDG prescaler set to 32 */ |
| #define IWDG_PRESCALER_64 IWDG_PR_PR_2 /*!< IWDG prescaler set to 64 */ |
| #define IWDG_PRESCALER_128 (IWDG_PR_PR_2 | IWDG_PR_PR_0) /*!< IWDG prescaler set to 128 */ |
| #define IWDG_PRESCALER_256 (IWDG_PR_PR_2 | IWDG_PR_PR_1) /*!< IWDG prescaler set to 256 */ |
| |
| /** |
| * @} |
| */ |
| |
| /** @defgroup IWDG_Window_option IWDG Window option |
| * @{ |
| */ |
| #define IWDG_WINDOW_DISABLE IWDG_WINR_WIN |
| /** |
| * @} |
| */ |
| |
| |
| /** |
| * @} |
| */ |
| |
| /* Exported macros -----------------------------------------------------------*/ |
| /** @defgroup IWDG_Exported_Macros IWDG Exported Macros |
| * @{ |
| */ |
| |
| /** |
| * @brief Enable the IWDG peripheral. |
| * @param __HANDLE__ IWDG handle |
| * @retval None |
| */ |
| #define __HAL_IWDG_START(__HANDLE__) WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_ENABLE) |
| |
| /** |
| * @brief Reload IWDG counter with value defined in the reload register |
| * (write access to IWDG_PR, IWDG_RLR and IWDG_WINR registers disabled). |
| * @param __HANDLE__ IWDG handle |
| * @retval None |
| */ |
| #define __HAL_IWDG_RELOAD_COUNTER(__HANDLE__) WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_RELOAD) |
| |
| /** |
| * @} |
| */ |
| |
| /* Exported functions --------------------------------------------------------*/ |
| /** @defgroup IWDG_Exported_Functions IWDG Exported Functions |
| * @{ |
| */ |
| |
| /** @defgroup IWDG_Exported_Functions_Group1 Initialization and Start functions |
| * @{ |
| */ |
| /* Initialization/Start functions ********************************************/ |
| HAL_StatusTypeDef HAL_IWDG_Init(IWDG_HandleTypeDef *hiwdg); |
| /** |
| * @} |
| */ |
| |
| /** @defgroup IWDG_Exported_Functions_Group2 IO operation functions |
| * @{ |
| */ |
| /* I/O operation functions ****************************************************/ |
| HAL_StatusTypeDef HAL_IWDG_Refresh(IWDG_HandleTypeDef *hiwdg); |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| /* Private constants ---------------------------------------------------------*/ |
| /** @defgroup IWDG_Private_Constants IWDG Private Constants |
| * @{ |
| */ |
| |
| /** |
| * @brief IWDG Key Register BitMask |
| */ |
| #define IWDG_KEY_RELOAD 0x0000AAAAu /*!< IWDG Reload Counter Enable */ |
| #define IWDG_KEY_ENABLE 0x0000CCCCu /*!< IWDG Peripheral Enable */ |
| #define IWDG_KEY_WRITE_ACCESS_ENABLE 0x00005555u /*!< IWDG KR Write Access Enable */ |
| #define IWDG_KEY_WRITE_ACCESS_DISABLE 0x00000000u /*!< IWDG KR Write Access Disable */ |
| |
| /** |
| * @} |
| */ |
| |
| /* Private macros ------------------------------------------------------------*/ |
| /** @defgroup IWDG_Private_Macros IWDG Private Macros |
| * @{ |
| */ |
| |
| /** |
| * @brief Enable write access to IWDG_PR, IWDG_RLR and IWDG_WINR registers. |
| * @param __HANDLE__ IWDG handle |
| * @retval None |
| */ |
| #define IWDG_ENABLE_WRITE_ACCESS(__HANDLE__) WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_WRITE_ACCESS_ENABLE) |
| |
| /** |
| * @brief Disable write access to IWDG_PR, IWDG_RLR and IWDG_WINR registers. |
| * @param __HANDLE__ IWDG handle |
| * @retval None |
| */ |
| #define IWDG_DISABLE_WRITE_ACCESS(__HANDLE__) WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_WRITE_ACCESS_DISABLE) |
| |
| /** |
| * @brief Check IWDG prescaler value. |
| * @param __PRESCALER__ IWDG prescaler value |
| * @retval None |
| */ |
| #define IS_IWDG_PRESCALER(__PRESCALER__) (((__PRESCALER__) == IWDG_PRESCALER_4) || \ |
| ((__PRESCALER__) == IWDG_PRESCALER_8) || \ |
| ((__PRESCALER__) == IWDG_PRESCALER_16) || \ |
| ((__PRESCALER__) == IWDG_PRESCALER_32) || \ |
| ((__PRESCALER__) == IWDG_PRESCALER_64) || \ |
| ((__PRESCALER__) == IWDG_PRESCALER_128)|| \ |
| ((__PRESCALER__) == IWDG_PRESCALER_256)) |
| |
| /** |
| * @brief Check IWDG reload value. |
| * @param __RELOAD__ IWDG reload value |
| * @retval None |
| */ |
| #define IS_IWDG_RELOAD(__RELOAD__) ((__RELOAD__) <= IWDG_RLR_RL) |
| |
| /** |
| * @brief Check IWDG window value. |
| * @param __WINDOW__ IWDG window value |
| * @retval None |
| */ |
| #define IS_IWDG_WINDOW(__WINDOW__) ((__WINDOW__) <= IWDG_WINR_WIN) |
| |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* STM32L0xx_HAL_IWDG_H */ |
| |
| /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |
