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+/**
+  @page WWDG_RefreshUntilUserEvent_Init WWDG example
+  
+  @verbatim
+  ******************************************************************************
+  * @file    Examples_LL/WWDG/WWDG_RefreshUntilUserEvent_Init/readme.txt 
+  * @author  MCD Application Team
+  * @brief   Description of the WWDG_RefreshUntilUserEvent_Init example.
+  ******************************************************************************
+  *
+  * Copyright (c) 2019 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
+  *
+  ******************************************************************************
+  @endverbatim
+
+@par Example Description
+
+Configuration of the WWDG to periodically update the counter and 
+generate an MCU WWDG reset when a user button is pressed. The peripheral initialization 
+uses the LL unitary service functions for optimization purposes (performance and size).
+
+Example Configuration:
+Configure the WWDG (Window, Prescaler & Counter) and enable it.
+Refresh the WWDG downcounter in the main loop - LED2 is blinking fastly & continuously
+
+Example Execution:
+When User push-button (SW1) is pressed, the Downcounter automatic refresh mechanism is disable and thus, reset will occur.
+After a reset when re-entering in the main, RCC WWDG Reset Flag will be checked and if we are back from a WWDG reset the LED2 will be switch ON.
+
+Waiting a new User push-button (SW1) pressed to re-activate the WWDG
+
+@par Keywords
+
+System, WWDG, Timeout, Refresh, Counter update, MCU Reset, Downcounter, Event, Window
+
+@par Directory contents 
+
+  - WWDG/WWDG_RefreshUntilUserEvent_Init/Inc/stm32wbxx_it.h          Interrupt handlers header file
+  - WWDG/WWDG_RefreshUntilUserEvent_Init/Inc/main.h                  Header for main.c module
+  - WWDG/WWDG_RefreshUntilUserEvent_Init/Inc/stm32_assert.h          Template file to include assert_failed function
+  - WWDG/WWDG_RefreshUntilUserEvent_Init/Src/stm32wbxx_it.c          Interrupt handlers
+  - WWDG/WWDG_RefreshUntilUserEvent_Init/Src/main.c                  Main program
+  - WWDG/WWDG_RefreshUntilUserEvent_Init/Src/system_stm32wbxx.c      STM32WBxx system source file
+
+
+@par Hardware and Software environment
+
+  - This example runs on STM32WB55xx devices.
+    
+  - This example has been tested with P-NUCLEO-WB55 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>&copy; COPYRIGHT STMicroelectronics</center></h3>
+ */