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   1 /**
   2   ******************************************************************************
   3   * @file    stm32f4xx_iwdg.h
   4   * @author  MCD Application Team
   5   * @version V1.0.0RC1
   6   * @date    25-August-2011
   7   * @brief   This file contains all the functions prototypes for the IWDG
   8   *          firmware library.
   9   ******************************************************************************
  10   * @attention
  11   *
  12   * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  13   * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  14   * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
  15   * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  16   * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  17   * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  18   *
  19   * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
  20   ******************************************************************************
  21   */
  22
  23 /* Define to prevent recursive inclusion -------------------------------------*/
  24 #ifndef __STM32F4xx_IWDG_H
  25 #define __STM32F4xx_IWDG_H
  26
  27 #ifdef __cplusplus
  28  extern "C" {
  29 #endif
  30
  31 /* Includes ------------------------------------------------------------------*/
  32 #include "stm32f4xx.h"
  33
  34 /** @addtogroup STM32F4xx_StdPeriph_Driver
  35   * @{
  36   */
  37
  38 /** @addtogroup IWDG
  39   * @{
  40   */
  41
  42 /* Exported types ------------------------------------------------------------*/
  43 /* Exported constants --------------------------------------------------------*/
  44
  45 /** @defgroup IWDG_Exported_Constants
  46   * @{
  47   */
  48
  49 /** @defgroup IWDG_WriteAccess
  50   * @{
  51   */
  52 #define IWDG_WriteAccess_Enable     ((uint16_t)0x5555)
  53 #define IWDG_WriteAccess_Disable    ((uint16_t)0x0000)
  54 #define IS_IWDG_WRITE_ACCESS(ACCESS) (((ACCESS) == IWDG_WriteAccess_Enable) || \
  55                                       ((ACCESS) == IWDG_WriteAccess_Disable))
  56 /**
  57   * @}
  58   */
  59
  60 /** @defgroup IWDG_prescaler
  61   * @{
  62   */
  63 #define IWDG_Prescaler_4            ((uint8_t)0x00)
  64 #define IWDG_Prescaler_8            ((uint8_t)0x01)
  65 #define IWDG_Prescaler_16           ((uint8_t)0x02)
  66 #define IWDG_Prescaler_32           ((uint8_t)0x03)
  67 #define IWDG_Prescaler_64           ((uint8_t)0x04)
  68 #define IWDG_Prescaler_128          ((uint8_t)0x05)
  69 #define IWDG_Prescaler_256          ((uint8_t)0x06)
  70 #define IS_IWDG_PRESCALER(PRESCALER) (((PRESCALER) == IWDG_Prescaler_4)  || \
  71                                       ((PRESCALER) == IWDG_Prescaler_8)  || \
  72                                       ((PRESCALER) == IWDG_Prescaler_16) || \
  73                                       ((PRESCALER) == IWDG_Prescaler_32) || \
  74                                       ((PRESCALER) == IWDG_Prescaler_64) || \
  75                                       ((PRESCALER) == IWDG_Prescaler_128)|| \
  76                                       ((PRESCALER) == IWDG_Prescaler_256))
  77 /**
  78   * @}
  79   */
  80
  81 /** @defgroup IWDG_Flag
  82   * @{
  83   */
  84 #define IWDG_FLAG_PVU               ((uint16_t)0x0001)
  85 #define IWDG_FLAG_RVU               ((uint16_t)0x0002)
  86 #define IS_IWDG_FLAG(FLAG) (((FLAG) == IWDG_FLAG_PVU) || ((FLAG) == IWDG_FLAG_RVU))
  87 #define IS_IWDG_RELOAD(RELOAD) ((RELOAD) <= 0xFFF)
  88 /**
  89   * @}
  90   */
  91
  92 /**
  93   * @}
  94   */
  95
  96 /* Exported macro ------------------------------------------------------------*/
  97 /* Exported functions --------------------------------------------------------*/
  98
  99 /* Prescaler and Counter configuration functions ******************************/
 100 void IWDG_WriteAccessCmd(uint16_t IWDG_WriteAccess);
 101 void IWDG_SetPrescaler(uint8_t IWDG_Prescaler);
 102 void IWDG_SetReload(uint16_t Reload);
 103 void IWDG_ReloadCounter(void);
 104
 105 /* IWDG activation function ***************************************************/
 106 void IWDG_Enable(void);
 107
 108 /* Flag management function ***************************************************/
 109 FlagStatus IWDG_GetFlagStatus(uint16_t IWDG_FLAG);
 110
 111 #ifdef __cplusplus
 112 }
 113 #endif
 114
 115 #endif /* __STM32F4xx_IWDG_H */
 116
 117 /**
 118   * @}
 119   */
 120
 121 /**
 122   * @}
 123   */
 124
 125 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/