view Common/Drivers/STM32F4xx_HAL_Driver/Inc/stm32f4xx_ll_iwdg.h @ 842:c3dd461ca3f9 Evo_2_23

Migrated Sentinel protocol to new UART structure: The Sentinel protocol had not been migrated to the new UART structure which was introduced with the introduction of the UART MUX. The Sentinel is now supported by autodetection again (development version only)
author Ideenmodellierer
date Mon, 15 Jan 2024 21:44:18 +0100
parents c78bcbd5deda
children
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/**
  ******************************************************************************
  * @file    stm32f4xx_ll_iwdg.h
  * @author  MCD Application Team
  * @brief   Header file of IWDG LL module.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *   1. Redistributions of source code must retain the above copyright notice,
  *      this list of conditions and the following disclaimer.
  *   2. Redistributions in binary form must reproduce the above copyright notice,
  *      this list of conditions and the following disclaimer in the documentation
  *      and/or other materials provided with the distribution.
  *   3. Neither the name of STMicroelectronics nor the names of its contributors
  *      may be used to endorse or promote products derived from this software
  *      without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  */

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32F4xx_LL_IWDG_H
#define __STM32F4xx_LL_IWDG_H

#ifdef __cplusplus
extern "C" {
#endif

/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx.h"

/** @addtogroup STM32F4xx_LL_Driver
  * @{
  */

#if defined(IWDG)

/** @defgroup IWDG_LL IWDG
  * @{
  */

/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/

/* Private constants ---------------------------------------------------------*/
/** @defgroup IWDG_LL_Private_Constants IWDG Private Constants
  * @{
  */

#define LL_IWDG_KEY_RELOAD                 0x0000AAAAU               /*!< IWDG Reload Counter Enable   */
#define LL_IWDG_KEY_ENABLE                 0x0000CCCCU               /*!< IWDG Peripheral Enable       */
#define LL_IWDG_KEY_WR_ACCESS_ENABLE       0x00005555U               /*!< IWDG KR Write Access Enable  */
#define LL_IWDG_KEY_WR_ACCESS_DISABLE      0x00000000U               /*!< IWDG KR Write Access Disable */

/**
  * @}
  */

/* Private macros ------------------------------------------------------------*/

/* Exported types ------------------------------------------------------------*/
/* Exported constants --------------------------------------------------------*/
/** @defgroup IWDG_LL_Exported_Constants IWDG Exported Constants
  * @{
  */

/** @defgroup IWDG_LL_EC_GET_FLAG Get Flags Defines
  * @brief    Flags defines which can be used with LL_IWDG_ReadReg function
  * @{
  */
#define LL_IWDG_SR_PVU                     IWDG_SR_PVU                           /*!< Watchdog prescaler value update */
#define LL_IWDG_SR_RVU                     IWDG_SR_RVU                           /*!< Watchdog counter reload value update */

/**
  * @}
  */

/** @defgroup IWDG_LL_EC_PRESCALER  Prescaler Divider
  * @{
  */
#define LL_IWDG_PRESCALER_4                0x00000000U                           /*!< Divider by 4   */
#define LL_IWDG_PRESCALER_8                (IWDG_PR_PR_0)                        /*!< Divider by 8   */
#define LL_IWDG_PRESCALER_16               (IWDG_PR_PR_1)                        /*!< Divider by 16  */
#define LL_IWDG_PRESCALER_32               (IWDG_PR_PR_1 | IWDG_PR_PR_0)         /*!< Divider by 32  */
#define LL_IWDG_PRESCALER_64               (IWDG_PR_PR_2)                        /*!< Divider by 64  */
#define LL_IWDG_PRESCALER_128              (IWDG_PR_PR_2 | IWDG_PR_PR_0)         /*!< Divider by 128 */
#define LL_IWDG_PRESCALER_256              (IWDG_PR_PR_2 | IWDG_PR_PR_1)         /*!< Divider by 256 */
/**
  * @}
  */

/**
  * @}
  */

/* Exported macro ------------------------------------------------------------*/
/** @defgroup IWDG_LL_Exported_Macros IWDG Exported Macros
  * @{
  */

/** @defgroup IWDG_LL_EM_WRITE_READ Common Write and read registers Macros
  * @{
  */

/**
  * @brief  Write a value in IWDG register
  * @param  __INSTANCE__ IWDG Instance
  * @param  __REG__ Register to be written
  * @param  __VALUE__ Value to be written in the register
  * @retval None
  */
#define LL_IWDG_WriteReg(__INSTANCE__, __REG__, __VALUE__) WRITE_REG(__INSTANCE__->__REG__, (__VALUE__))

/**
  * @brief  Read a value in IWDG register
  * @param  __INSTANCE__ IWDG Instance
  * @param  __REG__ Register to be read
  * @retval Register value
  */
#define LL_IWDG_ReadReg(__INSTANCE__, __REG__) READ_REG(__INSTANCE__->__REG__)
/**
  * @}
  */

/**
  * @}
  */


/* Exported functions --------------------------------------------------------*/
/** @defgroup IWDG_LL_Exported_Functions IWDG Exported Functions
  * @{
  */
/** @defgroup IWDG_LL_EF_Configuration Configuration
  * @{
  */

/**
  * @brief  Start the Independent Watchdog
  * @note   Except if the hardware watchdog option is selected
  * @rmtoll KR           KEY           LL_IWDG_Enable
  * @param  IWDGx IWDG Instance
  * @retval None
  */
__STATIC_INLINE void LL_IWDG_Enable(IWDG_TypeDef *IWDGx)
{
  WRITE_REG(IWDG->KR, LL_IWDG_KEY_ENABLE);
}

/**
  * @brief  Reloads IWDG counter with value defined in the reload register
  * @rmtoll KR           KEY           LL_IWDG_ReloadCounter
  * @param  IWDGx IWDG Instance
  * @retval None
  */
__STATIC_INLINE void LL_IWDG_ReloadCounter(IWDG_TypeDef *IWDGx)
{
  WRITE_REG(IWDG->KR, LL_IWDG_KEY_RELOAD);
}

/**
  * @brief  Enable write access to IWDG_PR, IWDG_RLR and IWDG_WINR registers
  * @rmtoll KR           KEY           LL_IWDG_EnableWriteAccess
  * @param  IWDGx IWDG Instance
  * @retval None
  */
__STATIC_INLINE void LL_IWDG_EnableWriteAccess(IWDG_TypeDef *IWDGx)
{
  WRITE_REG(IWDG->KR, LL_IWDG_KEY_WR_ACCESS_ENABLE);
}

/**
  * @brief  Disable write access to IWDG_PR, IWDG_RLR and IWDG_WINR registers
  * @rmtoll KR           KEY           LL_IWDG_DisableWriteAccess
  * @param  IWDGx IWDG Instance
  * @retval None
  */
__STATIC_INLINE void LL_IWDG_DisableWriteAccess(IWDG_TypeDef *IWDGx)
{
  WRITE_REG(IWDG->KR, LL_IWDG_KEY_WR_ACCESS_DISABLE);
}

/**
  * @brief  Select the prescaler of the IWDG
  * @rmtoll PR           PR            LL_IWDG_SetPrescaler
  * @param  IWDGx IWDG Instance
  * @param  Prescaler This parameter can be one of the following values:
  *         @arg @ref LL_IWDG_PRESCALER_4
  *         @arg @ref LL_IWDG_PRESCALER_8
  *         @arg @ref LL_IWDG_PRESCALER_16
  *         @arg @ref LL_IWDG_PRESCALER_32
  *         @arg @ref LL_IWDG_PRESCALER_64
  *         @arg @ref LL_IWDG_PRESCALER_128
  *         @arg @ref LL_IWDG_PRESCALER_256
  * @retval None
  */
__STATIC_INLINE void LL_IWDG_SetPrescaler(IWDG_TypeDef *IWDGx, uint32_t Prescaler)
{
  WRITE_REG(IWDGx->PR, IWDG_PR_PR & Prescaler);
}

/**
  * @brief  Get the selected prescaler of the IWDG
  * @rmtoll PR           PR            LL_IWDG_GetPrescaler
  * @param  IWDGx IWDG Instance
  * @retval Returned value can be one of the following values:
  *         @arg @ref LL_IWDG_PRESCALER_4
  *         @arg @ref LL_IWDG_PRESCALER_8
  *         @arg @ref LL_IWDG_PRESCALER_16
  *         @arg @ref LL_IWDG_PRESCALER_32
  *         @arg @ref LL_IWDG_PRESCALER_64
  *         @arg @ref LL_IWDG_PRESCALER_128
  *         @arg @ref LL_IWDG_PRESCALER_256
  */
__STATIC_INLINE uint32_t LL_IWDG_GetPrescaler(IWDG_TypeDef *IWDGx)
{
  return (uint32_t)(READ_REG(IWDGx->PR));
}

/**
  * @brief  Specify the IWDG down-counter reload value
  * @rmtoll RLR          RL            LL_IWDG_SetReloadCounter
  * @param  IWDGx IWDG Instance
  * @param  Counter Value between Min_Data=0 and Max_Data=0x0FFF
  * @retval None
  */
__STATIC_INLINE void LL_IWDG_SetReloadCounter(IWDG_TypeDef *IWDGx, uint32_t Counter)
{
  WRITE_REG(IWDGx->RLR, IWDG_RLR_RL & Counter);
}

/**
  * @brief  Get the specified IWDG down-counter reload value
  * @rmtoll RLR          RL            LL_IWDG_GetReloadCounter
  * @param  IWDGx IWDG Instance
  * @retval Value between Min_Data=0 and Max_Data=0x0FFF
  */
__STATIC_INLINE uint32_t LL_IWDG_GetReloadCounter(IWDG_TypeDef *IWDGx)
{
  return (uint32_t)(READ_REG(IWDGx->RLR));
}


/**
  * @}
  */

/** @defgroup IWDG_LL_EF_FLAG_Management FLAG_Management
  * @{
  */

/**
  * @brief  Check if flag Prescaler Value Update is set or not
  * @rmtoll SR           PVU           LL_IWDG_IsActiveFlag_PVU
  * @param  IWDGx IWDG Instance
  * @retval State of bit (1 or 0).
  */
__STATIC_INLINE uint32_t LL_IWDG_IsActiveFlag_PVU(IWDG_TypeDef *IWDGx)
{
  return (READ_BIT(IWDGx->SR, IWDG_SR_PVU) == (IWDG_SR_PVU));
}

/**
  * @brief  Check if flag Reload Value Update is set or not
  * @rmtoll SR           RVU           LL_IWDG_IsActiveFlag_RVU
  * @param  IWDGx IWDG Instance
  * @retval State of bit (1 or 0).
  */
__STATIC_INLINE uint32_t LL_IWDG_IsActiveFlag_RVU(IWDG_TypeDef *IWDGx)
{
  return (READ_BIT(IWDGx->SR, IWDG_SR_RVU) == (IWDG_SR_RVU));
}


/**
  * @brief  Check if all flags Prescaler, Reload & Window Value Update are reset or not
  * @rmtoll SR           PVU           LL_IWDG_IsReady\n
  *         SR           RVU           LL_IWDG_IsReady
  * @param  IWDGx IWDG Instance
  * @retval State of bits (1 or 0).
  */
__STATIC_INLINE uint32_t LL_IWDG_IsReady(IWDG_TypeDef *IWDGx)
{
  return (READ_BIT(IWDGx->SR, IWDG_SR_PVU | IWDG_SR_RVU) == 0U);
}

/**
  * @}
  */


/**
  * @}
  */

/**
  * @}
  */

#endif /* IWDG) */

/**
  * @}
  */

#ifdef __cplusplus
}
#endif

#endif /* __STM32F4xx_LL_IWDG_H */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/