【STM32】中断相关函数和类型

00. 目录

01. 概述

中断相关代码主要分布在固件库的 stm32f4xx_exti.h 和 stm32f4xx_exti.c 文件中。

02. 相关类型

EXTI模式枚举

/** 
  * @brief  EXTI mode enumeration  
  */

typedef enum
{
  EXTI_Mode_Interrupt = 0x00,
  EXTI_Mode_Event = 0x04
}EXTIMode_TypeDef;

#define IS_EXTI_MODE(MODE) (((MODE) == EXTI_Mode_Interrupt) || ((MODE) == EXTI_Mode_Event))

EXTI触发枚举

/** 
  * @brief  EXTI Trigger enumeration  
  */

typedef enum
{
  EXTI_Trigger_Rising = 0x08, //上升沿
  EXTI_Trigger_Falling = 0x0C,  //下降沿
  EXTI_Trigger_Rising_Falling = 0x10 //边沿触发
}EXTITrigger_TypeDef;

#define IS_EXTI_TRIGGER(TRIGGER) (((TRIGGER) == EXTI_Trigger_Rising) || \
                                  ((TRIGGER) == EXTI_Trigger_Falling) || \
                                  ((TRIGGER) == EXTI_Trigger_Rising_Falling))

EXTI初始化结构体

/** 
  * @brief  EXTI Init Structure definition  
  */

typedef struct
{
  uint32_t EXTI_Line;               /*!< Specifies the EXTI lines to be enabled or disabled.
                                         This parameter can be any combination value of @ref EXTI_Lines */
   
  EXTIMode_TypeDef EXTI_Mode;       /*!< Specifies the mode for the EXTI lines.
                                         This parameter can be a value of @ref EXTIMode_TypeDef */

  EXTITrigger_TypeDef EXTI_Trigger; /*!< Specifies the trigger signal active edge for the EXTI lines.
                                         This parameter can be a value of @ref EXTITrigger_TypeDef */

  FunctionalState EXTI_LineCmd;     /*!< Specifies the new state of the selected EXTI lines.
                                         This parameter can be set either to ENABLE or DISABLE */ 
}EXTI_InitTypeDef;

外部中断线

/** @defgroup EXTI_Lines 
  * @{
  */

#define EXTI_Line0       ((uint32_t)0x00001)     /*!< External interrupt line 0 */
#define EXTI_Line1       ((uint32_t)0x00002)     /*!< External interrupt line 1 */
#define EXTI_Line2       ((uint32_t)0x00004)     /*!< External interrupt line 2 */
#define EXTI_Line3       ((uint32_t)0x00008)     /*!< External interrupt line 3 */
#define EXTI_Line4       ((uint32_t)0x00010)     /*!< External interrupt line 4 */
#define EXTI_Line5       ((uint32_t)0x00020)     /*!< External interrupt line 5 */
#define EXTI_Line6       ((uint32_t)0x00040)     /*!< External interrupt line 6 */
#define EXTI_Line7       ((uint32_t)0x00080)     /*!< External interrupt line 7 */
#define EXTI_Line8       ((uint32_t)0x00100)     /*!< External interrupt line 8 */
#define EXTI_Line9       ((uint32_t)0x00200)     /*!< External interrupt line 9 */
#define EXTI_Line10      ((uint32_t)0x00400)     /*!< External interrupt line 10 */
#define EXTI_Line11      ((uint32_t)0x00800)     /*!< External interrupt line 11 */
#define EXTI_Line12      ((uint32_t)0x01000)     /*!< External interrupt line 12 */
#define EXTI_Line13      ((uint32_t)0x02000)     /*!< External interrupt line 13 */
#define EXTI_Line14      ((uint32_t)0x04000)     /*!< External interrupt line 14 */
#define EXTI_Line15      ((uint32_t)0x08000)     /*!< External interrupt line 15 */
#define EXTI_Line16      ((uint32_t)0x10000)     /*!< External interrupt line 16 Connected to the
 PVD Output */
#define EXTI_Line17      ((uint32_t)0x20000)     /*!< External interrupt line 17 Connected to the
 RTC Alarm event */
#define EXTI_Line18      ((uint32_t)0x40000)     /*!< External interrupt line 18 Connected to the
 USB OTG FS Wakeup from suspend event */                                    
#define EXTI_Line19      ((uint32_t)0x80000)     /*!< External interrupt line 19 Connected to the
 Ethernet Wakeup event */
#define EXTI_Line20      ((uint32_t)0x00100000)  /*!< External interrupt line 20 Connected to the
 USB OTG HS (configured in FS) Wakeup event  */
#define EXTI_Line21      ((uint32_t)0x00200000)  /*!< External interrupt line 21 Connected to the 
RTC Tamper and Time Stamp events */                                               
#define EXTI_Line22      ((uint32_t)0x00400000)  /*!< External interrupt line 22 Connected to the
 RTC Wakeup event */
#define EXTI_Line23      ((uint32_t)0x00800000)  /*!< External interrupt line 23 Connected to the 
LPTIM Wakeup event */

                                          
#define IS_EXTI_LINE(LINE) ((((LINE) & (uint32_t)0xFF800000) == 0x00) && ((LINE) != (uint16_t)0x00))

#define IS_GET_EXTI_LINE(LINE) (((LINE) == EXTI_Line0) || ((LINE) == EXTI_Line1) || \
                                ((LINE) == EXTI_Line2) || ((LINE) == EXTI_Line3) || \
                                ((LINE) == EXTI_Line4) || ((LINE) == EXTI_Line5) || \
                                ((LINE) == EXTI_Line6) || ((LINE) == EXTI_Line7) || \
                                ((LINE) == EXTI_Line8) || ((LINE) == EXTI_Line9) || \
                                ((LINE) == EXTI_Line10) || ((LINE) == EXTI_Line11) || \
                                ((LINE) == EXTI_Line12) || ((LINE) == EXTI_Line13) || \
                                ((LINE) == EXTI_Line14) || ((LINE) == EXTI_Line15) || \
                                ((LINE) == EXTI_Line16) || ((LINE) == EXTI_Line17) || \
                                ((LINE) == EXTI_Line18) || ((LINE) == EXTI_Line19) || \
                                ((LINE) == EXTI_Line20) || ((LINE) == EXTI_Line21) ||\
                                ((LINE) == EXTI_Line22) || ((LINE) == EXTI_Line23))
                    

03. 相关函数

/* Exported macro ------------------------------------------------------------*/
/* Exported functions --------------------------------------------------------*/

/*  Function used to set the EXTI configuration to the default reset state *****/
void EXTI_DeInit(void);

/* Initialization and Configuration functions *********************************/
void EXTI_Init(EXTI_InitTypeDef* EXTI_InitStruct);
void EXTI_StructInit(EXTI_InitTypeDef* EXTI_InitStruct);
void EXTI_GenerateSWInterrupt(uint32_t EXTI_Line);

/* Interrupts and flags management functions **********************************/
FlagStatus EXTI_GetFlagStatus(uint32_t EXTI_Line);
void EXTI_ClearFlag(uint32_t EXTI_Line);
ITStatus EXTI_GetITStatus(uint32_t EXTI_Line);
void EXTI_ClearITPendingBit(uint32_t EXTI_Line);

04. 附录

4.1 【STM32】STM32系列教程汇总

网址：【STM32】STM32系列教程汇总

05. 声明

本文地址：https://blog.csdn.net/dengjin20104042056/article/details/108180883