2 ******************************************************************************
3 * @file stm32f4xx_iwdg.h
4 * @author MCD Application Team
7 * @brief This file contains all the functions prototypes for the IWDG
9 ******************************************************************************
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.
19 * <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2>
20 ******************************************************************************
23 /* Define to prevent recursive inclusion -------------------------------------*/
24 #ifndef __STM32F4xx_IWDG_H
25 #define __STM32F4xx_IWDG_H
31 /* Includes ------------------------------------------------------------------*/
32 #include "stm32f4xx.h"
34 /** @addtogroup STM32F4xx_StdPeriph_Driver
42 /* Exported types ------------------------------------------------------------*/
43 /* Exported constants --------------------------------------------------------*/
45 /** @defgroup IWDG_Exported_Constants
49 /** @defgroup IWDG_WriteAccess
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))
60 /** @defgroup IWDG_prescaler
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))
81 /** @defgroup IWDG_Flag
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)
96 /* Exported macro ------------------------------------------------------------*/
97 /* Exported functions --------------------------------------------------------*/
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);
105 /* IWDG activation function ***************************************************/
106 void IWDG_Enable(void);
108 /* Flag management function ***************************************************/
109 FlagStatus IWDG_GetFlagStatus(uint16_t IWDG_FLAG);
115 #endif /* __STM32F4xx_IWDG_H */
125 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/