stm32f4xx_hal_exti.c File Reference

EXTI HAL module driver. This file provides firmware functions to manage the following functionalities of the Extended Interrupts and events controller (EXTI) peripheral: + Initialization and de-initialization functions + IO operation functions. More...

#include "stm32f4xx_hal.h"

Go to the source code of this file.

Functions
HAL_StatusTypeDef	HAL_EXTI_SetConfigLine (EXTI_HandleTypeDef *hexti, EXTI_ConfigTypeDef *pExtiConfig)
	Set configuration of a dedicated Exti line.
HAL_StatusTypeDef	HAL_EXTI_GetConfigLine (EXTI_HandleTypeDef *hexti, EXTI_ConfigTypeDef *pExtiConfig)
	Get configuration of a dedicated Exti line.
HAL_StatusTypeDef	HAL_EXTI_ClearConfigLine (EXTI_HandleTypeDef *hexti)
	Clear whole configuration of a dedicated Exti line.
HAL_StatusTypeDef	HAL_EXTI_RegisterCallback (EXTI_HandleTypeDef *hexti, EXTI_CallbackIDTypeDef CallbackID, void(*pPendingCbfn)(void))
	Register callback for a dedicated Exti line.
HAL_StatusTypeDef	HAL_EXTI_GetHandle (EXTI_HandleTypeDef *hexti, uint32_t ExtiLine)
	Store line number as handle private field.
void	HAL_EXTI_IRQHandler (EXTI_HandleTypeDef *hexti)
	Handle EXTI interrupt request.
uint32_t	HAL_EXTI_GetPending (EXTI_HandleTypeDef *hexti, uint32_t Edge)
	Get interrupt pending bit of a dedicated line.
void	HAL_EXTI_ClearPending (EXTI_HandleTypeDef *hexti, uint32_t Edge)
	Clear interrupt pending bit of a dedicated line.
void	HAL_EXTI_GenerateSWI (EXTI_HandleTypeDef *hexti)
	Generate a software interrupt for a dedicated line.

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Detailed Description

EXTI HAL module driver. This file provides firmware functions to manage the following functionalities of the Extended Interrupts and events controller (EXTI) peripheral: + Initialization and de-initialization functions + IO operation functions.

Author:

MCD Application Team

  ==============================================================================
                    ##### EXTI Peripheral features #####
  ==============================================================================
  [..]
    (+) Each Exti line can be configured within this driver.

    (+) Exti line can be configured in 3 different modes
        (++) Interrupt
        (++) Event
        (++) Both of them

    (+) Configurable Exti lines can be configured with 3 different triggers
        (++) Rising
        (++) Falling
        (++) Both of them

    (+) When set in interrupt mode, configurable Exti lines have two different
        interrupts pending registers which allow to distinguish which transition
        occurs:
        (++) Rising edge pending interrupt
        (++) Falling

    (+) Exti lines 0 to 15 are linked to gpio pin number 0 to 15. Gpio port can
        be selected through multiplexer.

                     ##### How to use this driver #####
  ==============================================================================
  [..]

    (#) Configure the EXTI line using HAL_EXTI_SetConfigLine().
        (++) Choose the interrupt line number by setting "Line" member from
             EXTI_ConfigTypeDef structure.
        (++) Configure the interrupt and/or event mode using "Mode" member from
             EXTI_ConfigTypeDef structure.
        (++) For configurable lines, configure rising and/or falling trigger
             "Trigger" member from EXTI_ConfigTypeDef structure.
        (++) For Exti lines linked to gpio, choose gpio port using "GPIOSel"
             member from GPIO_InitTypeDef structure.

    (#) Get current Exti configuration of a dedicated line using
        HAL_EXTI_GetConfigLine().
        (++) Provide exiting handle as parameter.
        (++) Provide pointer on EXTI_ConfigTypeDef structure as second parameter.

    (#) Clear Exti configuration of a dedicated line using HAL_EXTI_GetConfigLine().
        (++) Provide exiting handle as parameter.

    (#) Register callback to treat Exti interrupts using HAL_EXTI_RegisterCallback().
        (++) Provide exiting handle as first parameter.
        (++) Provide which callback will be registered using one value from
             EXTI_CallbackIDTypeDef.
        (++) Provide callback function pointer.

    (#) Get interrupt pending bit using HAL_EXTI_GetPending().

    (#) Clear interrupt pending bit using HAL_EXTI_GetPending().

    (#) Generate software interrupt using HAL_EXTI_GenerateSWI().

  

Attention:

© Copyright (c) 2018 STMicroelectronics. All rights reserved.

This software component is licensed by ST under BSD 3-Clause license, the "License"; You may not use this file except in compliance with the License. You may obtain a copy of the License at: opensource.org/licenses/BSD-3-Clause

Definition in file stm32f4xx_hal_exti.c.