text: /**
    ******************************************************************************
    * @file    stm32g0xx_ll_iwdg.h
    * @author  MCD Application Team
    * @brief   Header file of IWDG LL module.
    ******************************************************************************
    * @attention
    *
    * <h2><center>&copy; Copyright (c) 2018 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 STM32G0xx_LL_IWDG_H
  #define STM32G0xx_LL_IWDG_H
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  /* Includes ------------------------------------------------------------------*/
  #include "stm32g0xx.h"
  
  /** @addtogroup STM32G0xx_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 */
  #define LL_IWDG_SR_WVU                     IWDG_SR_WVU                           /*!< Watchdog counter window 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(IWDGx->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(IWDGx->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(IWDGx->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(IWDGx->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 (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 (READ_REG(IWDGx->RLR));
  }
  
  /**
    * @brief  Specify high limit of the window value to be compared to the down-counter.
    * @rmtoll WINR         WIN           LL_IWDG_SetWindow
    * @param  IWDGx IWDG Instance
    * @param  Window Value between Min_Data=0 and Max_Data=0x0FFF
    * @retval None
    */
  __STATIC_INLINE void LL_IWDG_SetWindow(IWDG_TypeDef *IWDGx, uint32_t Window)
  {
    WRITE_REG(IWDGx->WINR, IWDG_WINR_WIN & Window);
  }
  
  /**
    * @brief  Get the high limit of the window value specified.
    * @rmtoll WINR         WIN           LL_IWDG_GetWindow
    * @param  IWDGx IWDG Instance
    * @retval Value between Min_Data=0 and Max_Data=0x0FFF
    */
  __STATIC_INLINE uint32_t LL_IWDG_GetWindow(IWDG_TypeDef *IWDGx)
  {
    return (READ_REG(IWDGx->WINR));
  }
  
  /**
    * @}
    */
  
  /** @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)) ? 1UL : 0UL);
  }
  
  /**
    * @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)) ? 1UL : 0UL);
  }
  
  /**
    * @brief  Check if flag Window Value Update is set or not
    * @rmtoll SR           WVU           LL_IWDG_IsActiveFlag_WVU
    * @param  IWDGx IWDG Instance
    * @retval State of bit (1 or 0).
    */
  __STATIC_INLINE uint32_t LL_IWDG_IsActiveFlag_WVU(IWDG_TypeDef *IWDGx)
  {
    return ((READ_BIT(IWDGx->SR, IWDG_SR_WVU) == (IWDG_SR_WVU)) ? 1UL : 0UL);
  }
  
  /**
    * @brief  Check if all flags Prescaler, Reload & Window Value Update are reset or not
    * @rmtoll SR           PVU           LL_IWDG_IsReady\n
    *         SR           WVU           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 | IWDG_SR_WVU) == 0U) ? 1UL : 0UL);
  }
  
  /**
    * @}
    */
  
  
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  #endif /* IWDG) */
  
  /**
    * @}
    */
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* STM32G0xx_LL_IWDG_H */
  
  /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  