/**
@page EXTI_ToggleLedOnIT_Init EXTI example
@verbatim
******************** (C) COPYRIGHT 2017 STMicroelectronics *******************
* @file Examples_LL/EXTI/EXTI_ToggleLedOnIT_Init/readme.txt
* @author MCD Application Team
* @brief Description of the EXTI example.
******************************************************************************
* @attention
*
* Copyright (c) 2017 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
@endverbatim
@par Example Description
This example describes how to configure the EXTI and use
GPIOs to toggle the user LEDs available on the board when
a user button is pressed. This example is based on the
STM32F4xx LL API. Peripheral initialization is done using LL
initialization function to demonstrate LL init usage.
In this example, one EXTI line (EXTI13) is configured to generate
an interrupt on each falling edge.
In the interrupt routine a led connected to a specific GPIO pin is toggled.
In this example:
- EXTI13 is connected to PC.13 pin
- when falling edge is detected on EXTI13 by pressing User push-button, LED2 toggles
On NUCLEO-F411RE:
- EXTI13 is connected to User push-button
@par Keywords
System, GPIO, Output, Alternate function, EXTI, Toggle
@par Directory contents
- EXTI/EXTI_ToggleLedOnIT_Init/Inc/stm32f4xx_it.h Interrupt handlers header file
- EXTI/EXTI_ToggleLedOnIT_Init/Inc/main.h Header for main.c module
- EXTI/EXTI_ToggleLedOnIT_Init/Inc/stm32_assert.h Template file to include assert_failed function
- EXTI/EXTI_ToggleLedOnIT_Init/Src/stm32f4xx_it.c Interrupt handlers
- EXTI/EXTI_ToggleLedOnIT_Init/Src/main.c Main program
- EXTI/EXTI_ToggleLedOnIT_Init/Src/system_stm32f4xx.c STM32F4xx system source file
@par Hardware and Software environment
- This example runs on STM32F411xx devices.
- This example has been tested with NUCLEO-F411RE board and can be
easily tailored to any other supported device and development board.
@par How to use it ?
In order to make the program work, you must do the following :
- Open your preferred toolchain
- Rebuild all files and load your image into target memory
- Run the example
*/
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