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+    /**
+  @page CORTEXM_SysTick CORTEXM SysTick example
+
+  @verbatim
+  ******************************************************************************
+  * @file    CORTEX/CORTEXM_SysTick/readme.txt
+  * @author  MCD Application Team
+  * @brief   Description of the CortexM SysTick 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 
+  
+How to use the default SysTick configuration with a 1 ms timebase to toggle LEDs.
+
+  A "HAL_Delay" function is implemented based on the SysTick end-of-count event.
+  Three LEDs are toggled with a timing defined by the HAL_Delay function.
+
+@note Care must be taken when using HAL_Delay(), this function provides accurate
+      delay (in milliseconds) based on variable incremented in SysTick ISR. This
+      implies that if HAL_Delay() is called from a peripheral ISR process, then 
+      the SysTick interrupt must have higher priority (numerically lower)
+      than the peripheral interrupt. Otherwise the caller ISR process will be blocked.
+      To change the SysTick interrupt priority you have to use HAL_NVIC_SetPriority() function.
+      
+@note The application need to ensure that the SysTick time base is always set to 1 millisecond
+      to have correct HAL operation.
+
+@par Keywords
+
+System, Cortex, Time base, Systick, HCLK 
+
+@par Directory contents 
+
+  - CORTEX/CORTEXM_SysTick/Inc/stm32wbxx_hal_conf.h    HAL configuration file
+  - CORTEX/CORTEXM_SysTick/Inc/stm32wbxx_it.h          Interrupt handlers header file
+  - CORTEX/CORTEXM_SysTick/Inc/main.h                  Header for main.c module
+  - CORTEX/CORTEXM_SysTick/Src/stm32wbxx_it.c          Interrupt handlers
+  - CORTEX/CORTEXM_SysTick/Src//stm32wbxx_hal_msp.c     HAL MSP file
+  - CORTEX/CORTEXM_SysTick/Src/main.c                  Main program
+  - CORTEX/CORTEXM_SysTick/Src/system_stm32wbxx.c      STM32WBxx system source file
+
+@par Hardware and Software environment 
+
+  - This example runs on STM32WB35CEUx devices.
+    
+  - This example has been tested with NUCLEO-WB35CE 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>
+ */