/**
@page IWDG_RefreshUntilUserEvent IWDG example
@verbatim
******************** (C) COPYRIGHT 2017 STMicroelectronics *******************
* @file Examples_LL/IWDG/IWDG_RefreshUntilUserEvent/readme.txt
* @author MCD Application Team
* @brief Description of the IWDG_RefreshUntilUserEvent 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 IWDG to ensure period counter update and
generate an MCU IWDG reset when a user button is pressed. Peripheral initialization is
done using LL unitary services functions for optimization purpose (performance and size).
Example Configuration:
Configure the IWDG (prescaler, counter) and enable it.
Infinite refresh of the IWDG down-counter done in the main loop.
LED2 is blinking fast & continuously.
Example Execution:
When User Button is pressed, the down-counter automatic refresh mechanism is
disable and thus, reset will occur. After a reset, when re-entering in the main,
RCC IWDG Reset Flag will be checked and if we are back from a IWDG reset the LED2
will be switch ON.
Waiting a new user button pressed to re-activate the IWDG
@par Keywords
System, IWDG, Timeout, MCU Reset, Downcounter, Timer, Measure Frequency
@par Directory contents
- IWDG/IWDG_RefreshUntilUserEvent/Inc/stm32f4xx_it.h Interrupt handlers header file
- IWDG/IWDG_RefreshUntilUserEvent/Inc/main.h Header for main.c module
- IWDG/IWDG_RefreshUntilUserEvent/Inc/stm32_assert.h Template file to include assert_failed function
- IWDG/IWDG_RefreshUntilUserEvent/Src/stm32f4xx_it.c Interrupt handlers
- IWDG/IWDG_RefreshUntilUserEvent/Src/main.c Main program
- IWDG/IWDG_RefreshUntilUserEvent/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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