text: /**
    ******************************************************************************
    * @file    stm32f30x_exti.h
    * @author  MCD Application Team
    * @version V1.2.3
    * @date    10-July-2015
    * @brief   This file contains all the functions prototypes for the EXTI 
    *          firmware library.
    ******************************************************************************
    * @attention
    *
    * <h2><center>&copy; COPYRIGHT 2015 STMicroelectronics</center></h2>
    *
    * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
    * You may not use this file except in compliance with the License.
    * You may obtain a copy of the License at:
    *
    *        http://www.st.com/software_license_agreement_liberty_v2
    *
    * Unless required by applicable law or agreed to in writing, software 
    * distributed under the License is distributed on an "AS IS" BASIS, 
    * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    * See the License for the specific language governing permissions and
    * limitations under the License.
    *
    ******************************************************************************
    */ 
  
  /* Define to prevent recursive inclusion -------------------------------------*/
  #ifndef __STM32F30x_EXTI_H
  #define __STM32F30x_EXTI_H
  
  #ifdef __cplusplus
   extern "C" {
  #endif
  
  /* Includes ------------------------------------------------------------------*/
  #include "stm32f30x.h"
  
  /** @addtogroup STM32F30x_StdPeriph_Driver
    * @{
    */
  
  /** @addtogroup EXTI
    * @{
    */
  
  /* Exported types ------------------------------------------------------------*/
  
  /** 
    * @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))
  
  /** 
    * @brief  EXTI Trigger enumeration  
    */
  
  typedef enum
  {
    EXTI_Trigger_Rising = 0x08,
    EXTI_Trigger_Falling = 0x0C,
    EXTI_Trigger_Rising_Falling = 0x10
  }EXTITrigger_TypeDef;
  
  #define IS_EXTI_TRIGGER(TRIGGER) (((TRIGGER) == EXTI_Trigger_Rising) || \
                                    ((TRIGGER) == EXTI_Trigger_Falling) || \
                                    ((TRIGGER) == EXTI_Trigger_Rising_Falling))
  /** 
    * @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 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;
  
  /* Exported constants --------------------------------------------------------*/
  
  /** @defgroup EXTI_Exported_Constants
    * @{
    */ 
  /** @defgroup EXTI_Lines 
    * @{
    */
  
  #define EXTI_Line0       ((uint32_t)0x00)  /*!< External interrupt line 0  */
  #define EXTI_Line1       ((uint32_t)0x01)  /*!< External interrupt line 1  */
  #define EXTI_Line2       ((uint32_t)0x02)  /*!< External interrupt line 2  */
  #define EXTI_Line3       ((uint32_t)0x03)  /*!< External interrupt line 3  */
  #define EXTI_Line4       ((uint32_t)0x04)  /*!< External interrupt line 4  */
  #define EXTI_Line5       ((uint32_t)0x05)  /*!< External interrupt line 5  */
  #define EXTI_Line6       ((uint32_t)0x06)  /*!< External interrupt line 6  */
  #define EXTI_Line7       ((uint32_t)0x07)  /*!< External interrupt line 7  */
  #define EXTI_Line8       ((uint32_t)0x08)  /*!< External interrupt line 8  */
  #define EXTI_Line9       ((uint32_t)0x09)  /*!< External interrupt line 9  */
  #define EXTI_Line10      ((uint32_t)0x0A)  /*!< External interrupt line 10 */
  #define EXTI_Line11      ((uint32_t)0x0B)  /*!< External interrupt line 11 */
  #define EXTI_Line12      ((uint32_t)0x0C)  /*!< External interrupt line 12 */
  #define EXTI_Line13      ((uint32_t)0x0D)  /*!< External interrupt line 13 */
  #define EXTI_Line14      ((uint32_t)0x0E)  /*!< External interrupt line 14 */
  #define EXTI_Line15      ((uint32_t)0x0F)  /*!< External interrupt line 15 */
  #define EXTI_Line16      ((uint32_t)0x10)  /*!< External interrupt line 16 
                                                        Connected to the PVD Output */
  #define EXTI_Line17      ((uint32_t)0x11)  /*!< Internal interrupt line 17 
                                                        Connected to the RTC Alarm 
                                                        event */
  #define EXTI_Line18      ((uint32_t)0x12)  /*!< Internal interrupt line 18 
                                                        Connected to the USB Device
                                                        Wakeup from suspend event */
  #define EXTI_Line19      ((uint32_t)0x13)  /*!< Internal interrupt line 19
                                                        Connected to the RTC Tamper
                                                        and Time Stamp events */
  #define EXTI_Line20      ((uint32_t)0x14)  /*!< Internal interrupt line 20
                                                        Connected to the RTC wakeup
                                                        event */                                                      
  #define EXTI_Line21      ((uint32_t)0x15)  /*!< Internal interrupt line 21
                                                        Connected to the Comparator 1
                                                        event */
  #define EXTI_Line22      ((uint32_t)0x16)  /*!< Internal interrupt line 22
                                                        Connected to the Comparator 2
                                                        event */
  #define EXTI_Line23      ((uint32_t)0x17)  /*!< Internal interrupt line 23
                                                        Connected to the I2C1 wakeup
                                                        event */
  #define EXTI_Line24      ((uint32_t)0x18)  /*!< Internal interrupt line 24
                                                        Connected to the I2C2 wakeup
                                                        event */
  #define EXTI_Line25      ((uint32_t)0x19)  /*!< Internal interrupt line 25
                                                        Connected to the USART1 wakeup
                                                        event */
  #define EXTI_Line26      ((uint32_t)0x1A)  /*!< Internal interrupt line 26
                                                        Connected to the USART2 wakeup
                                                        event */
  #define EXTI_Line27      ((uint32_t)0x1B)  /*!< Internal interrupt line 27
                                                         reserved */
  #define EXTI_Line28      ((uint32_t)0x1C)  /*!< Internal interrupt line 28
                                                        Connected to the USART3 wakeup
                                                        event */
  #define EXTI_Line29      ((uint32_t)0x1D)  /*!< Internal interrupt line 29
                                                        Connected to the Comparator 3 
                                                        event */
  #define EXTI_Line30      ((uint32_t)0x1E)  /*!< Internal interrupt line 30
                                                        Connected to the Comparator 4 
                                                        event */
  #define EXTI_Line31      ((uint32_t)0x1F)  /*!< Internal interrupt line 31
                                                        Connected to the Comparator 5 
                                                        event */
  #define EXTI_Line32      ((uint32_t)0x20)  /*!< Internal interrupt line 32
                                                        Connected to the Comparator 6 
                                                        event */
  #define EXTI_Line33      ((uint32_t)0x21)  /*!< Internal interrupt line 33
                                                        Connected to the Comparator 7 
                                                        event */
  #define EXTI_Line34      ((uint32_t)0x22)  /*!< Internal interrupt line 34
                                                        Connected to the USART4 wakeup
                                                        event */
  #define EXTI_Line35      ((uint32_t)0x23)  /*!< Internal interrupt line 35
                                                        Connected to the USART5 wakeup
                                                        event */
                                                                                                                                                                                                                                                                                                                                                                                                                                                  
  #define IS_EXTI_LINE_ALL(LINE) ((LINE) <= 0x23)
  #define IS_EXTI_LINE_EXT(LINE) (((LINE) <= 0x16) || (((LINE) == EXTI_Line29) || ((LINE) == EXTI_Line30) || \
                                 ((LINE) == EXTI_Line31) || ((LINE) == EXTI_Line32) || ((LINE) == EXTI_Line33)))
  
  #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_Line29) || \
                                  ((LINE) == EXTI_Line30) || ((LINE) == EXTI_Line31) || \
                                  ((LINE) == EXTI_Line32) || ((LINE) == EXTI_Line33))
  /**
    * @}
    */
   
  /**
    * @}
    */
  
  /* 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);
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* __STM32F30x_EXTI_H */
  /**
    * @}
    */ 
  
  /**
    * @}
    */
  
  /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  