69 lines
2.6 KiB
Plaintext
69 lines
2.6 KiB
Plaintext
/**
|
|
@page EXTI_ToggleLedOnIT EXTI example
|
|
|
|
@verbatim
|
|
******************** (C) COPYRIGHT 2016 STMicroelectronics *******************
|
|
* @file Examples_LL/EXTI/EXTI_ToggleLedOnIT/readme.txt
|
|
* @author MCD Application Team
|
|
* @brief Description of the EXTI example.
|
|
******************************************************************************
|
|
* @attention
|
|
*
|
|
* <h2><center>© Copyright (c) 2016 STMicroelectronics.
|
|
* All rights reserved.</center></h2>
|
|
*
|
|
* 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
|
|
*
|
|
******************************************************************************
|
|
@endverbatim
|
|
|
|
@par Example Description
|
|
|
|
How to configure the EXTI and use GPIOs to toggle the user LEDs
|
|
available on the board when a user button is pressed. It is based on the
|
|
STM32F1xx LL API. The peripheral initialization uses LL unitary service
|
|
functions for optimization purposes (performance and size).
|
|
|
|
In this example, one EXTI line (External lines 10 to 15) 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:
|
|
- External lines 10 to 15 is connected to PC.13 pin
|
|
- when falling edge is detected on External lines 10 to 15 by pressing User push-button, LED2 toggles
|
|
|
|
On STM32F103RB-Nucleo:
|
|
- External lines 10 to 15 is connected to User push-button
|
|
|
|
|
|
@par Directory contents
|
|
|
|
- EXTI/EXTI_ToggleLedOnIT/Inc/stm32f1xx_it.h Interrupt handlers header file
|
|
- EXTI/EXTI_ToggleLedOnIT/Inc/main.h Header for main.c module
|
|
- EXTI/EXTI_ToggleLedOnIT/Inc/stm32_assert.h Template file to include assert_failed function
|
|
- EXTI/EXTI_ToggleLedOnIT/Src/stm32f1xx_it.c Interrupt handlers
|
|
- EXTI/EXTI_ToggleLedOnIT/Src/main.c Main program
|
|
- EXTI/EXTI_ToggleLedOnIT/Src/system_stm32f1xx.c STM32F1xx system source file
|
|
|
|
@par Hardware and Software environment
|
|
|
|
- This example runs on STM32F103xB devices.
|
|
|
|
- This example has been tested with STM32F103RB-Nucleo 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
|
|
|
|
* <h3><center>© COPYRIGHT STMicroelectronics</center></h3>
|
|
*/
|