lib/main/STM32F4/Drivers/STM32F4xx_StdPeriph_Driver/inc/stm32f4xx_iwdg.h

   1 /**
   2   ******************************************************************************
   3   * @file    stm32f4xx_iwdg.h
   4   * @author  MCD Application Team
   5   * @version V1.7.1
   6   * @date    20-May-2016
   7   * @brief   This file contains all the functions prototypes for the IWDG
   8   *          firmware library.
   9   ******************************************************************************
  10   * @attention
  11   *
  12   * <h2><center>&copy; COPYRIGHT 2016 STMicroelectronics</center></h2>
  13   *
  14   * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
  15   * You may not use this file except in compliance with the License.
  16   * You may obtain a copy of the License at:
  17   *
  18   *        http://www.st.com/software_license_agreement_liberty_v2
  19   *
  20   * Unless required by applicable law or agreed to in writing, software
  21   * distributed under the License is distributed on an "AS IS" BASIS,
  22   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  23   * See the License for the specific language governing permissions and
  24   * limitations under the License.
  25   *
  26   ******************************************************************************
  27   */
  28
  29 /* Define to prevent recursive inclusion -------------------------------------*/
  30 #ifndef __STM32F4xx_IWDG_H
  31 #define __STM32F4xx_IWDG_H
  32
  33 #ifdef __cplusplus
  34  extern "C" {
  35 #endif
  36
  37 /* Includes ------------------------------------------------------------------*/
  38 #include "stm32f4xx.h"
  39
  40 /** @addtogroup STM32F4xx_StdPeriph_Driver
  41   * @{
  42   */
  43
  44 /** @addtogroup IWDG
  45   * @{
  46   */
  47
  48 /* Exported types ------------------------------------------------------------*/
  49 /* Exported constants --------------------------------------------------------*/
  50
  51 /** @defgroup IWDG_Exported_Constants
  52   * @{
  53   */
  54
  55 /** @defgroup IWDG_WriteAccess
  56   * @{
  57   */
  58 #define IWDG_WriteAccess_Enable     ((uint16_t)0x5555)
  59 #define IWDG_WriteAccess_Disable    ((uint16_t)0x0000)
  60 #define IS_IWDG_WRITE_ACCESS(ACCESS) (((ACCESS) == IWDG_WriteAccess_Enable) || \
  61                                       ((ACCESS) == IWDG_WriteAccess_Disable))
  62 /**
  63   * @}
  64   */
  65
  66 /** @defgroup IWDG_prescaler
  67   * @{
  68   */
  69 #define IWDG_Prescaler_4            ((uint8_t)0x00)
  70 #define IWDG_Prescaler_8            ((uint8_t)0x01)
  71 #define IWDG_Prescaler_16           ((uint8_t)0x02)
  72 #define IWDG_Prescaler_32           ((uint8_t)0x03)
  73 #define IWDG_Prescaler_64           ((uint8_t)0x04)
  74 #define IWDG_Prescaler_128          ((uint8_t)0x05)
  75 #define IWDG_Prescaler_256          ((uint8_t)0x06)
  76 #define IS_IWDG_PRESCALER(PRESCALER) (((PRESCALER) == IWDG_Prescaler_4)  || \
  77                                       ((PRESCALER) == IWDG_Prescaler_8)  || \
  78                                       ((PRESCALER) == IWDG_Prescaler_16) || \
  79                                       ((PRESCALER) == IWDG_Prescaler_32) || \
  80                                       ((PRESCALER) == IWDG_Prescaler_64) || \
  81                                       ((PRESCALER) == IWDG_Prescaler_128)|| \
  82                                       ((PRESCALER) == IWDG_Prescaler_256))
  83 /**
  84   * @}
  85   */
  86
  87 /** @defgroup IWDG_Flag
  88   * @{
  89   */
  90 #define IWDG_FLAG_PVU               ((uint16_t)0x0001)
  91 #define IWDG_FLAG_RVU               ((uint16_t)0x0002)
  92 #define IS_IWDG_FLAG(FLAG) (((FLAG) == IWDG_FLAG_PVU) || ((FLAG) == IWDG_FLAG_RVU))
  93 #define IS_IWDG_RELOAD(RELOAD) ((RELOAD) <= 0xFFF)
  94 /**
  95   * @}
  96   */
  97
  98 /**
  99   * @}
 100   */
 101
 102 /* Exported macro ------------------------------------------------------------*/
 103 /* Exported functions --------------------------------------------------------*/
 104
 105 /* Prescaler and Counter configuration functions ******************************/
 106 void IWDG_WriteAccessCmd(uint16_t IWDG_WriteAccess);
 107 void IWDG_SetPrescaler(uint8_t IWDG_Prescaler);
 108 void IWDG_SetReload(uint16_t Reload);
 109 void IWDG_ReloadCounter(void);
 110
 111 /* IWDG activation function ***************************************************/
 112 void IWDG_Enable(void);
 113
 114 /* Flag management function ***************************************************/
 115 FlagStatus IWDG_GetFlagStatus(uint16_t IWDG_FLAG);
 116
 117 #ifdef __cplusplus
 118 }
 119 #endif
 120
 121 #endif /* __STM32F4xx_IWDG_H */
 122
 123 /**
 124   * @}
 125   */
 126
 127 /**
 128   * @}
 129   */
 130
 131 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/