text: /**
    ******************************************************************************
    * @file    system_stm32f3xx.h
    * @author  MCD Application Team
    * @version V2.3.0
    * @date    29-April-2015
    * @brief   CMSIS Cortex-M4 Device System Source File for STM32F3xx devices.  
    ******************************************************************************
    * @attention
    *
    * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
    *
    * Redistribution and use in source and binary forms, with or without modification,
    * are permitted provided that the following conditions are met:
    *   1. Redistributions of source code must retain the above copyright notice,
    *      this list of conditions and the following disclaimer.
    *   2. Redistributions in binary form must reproduce the above copyright notice,
    *      this list of conditions and the following disclaimer in the documentation
    *      and/or other materials provided with the distribution.
    *   3. Neither the name of STMicroelectronics nor the names of its contributors
    *      may be used to endorse or promote products derived from this software
    *      without specific prior written permission.
    *
    * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
    * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
    * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
    * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
    * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
    * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    *
    ******************************************************************************
    */ 
  
  /** @addtogroup CMSIS
    * @{
    */
  
  /** @addtogroup stm32f3xx_system
    * @{
    */  
    
  /**
    * @brief Define to prevent recursive inclusion
    */
  #ifndef __SYSTEM_STM32F3XX_H
  #define __SYSTEM_STM32F3XX_H
  
  #ifdef __cplusplus
   extern "C" {
  #endif 
  
  /** @addtogroup STM32F3xx_System_Includes
    * @{
    */
  
  /**
    * @}
    */
  
  
  /** @addtogroup STM32F3xx_System_Exported_types
    * @{
    */
    /* This variable is updated in three ways:
        1) by calling CMSIS function SystemCoreClockUpdate()
        3) by calling HAL API function HAL_RCC_GetHCLKFreq()
        3) by calling HAL API function HAL_RCC_ClockConfig()
           Note: If you use this function to configure the system clock; then there
                 is no need to call the 2 first functions listed above, since SystemCoreClock
                 variable is updated automatically.
    */
  extern uint32_t SystemCoreClock;          /*!< System Clock Frequency (Core Clock) */
  extern const uint8_t AHBPrescTable[16];   /*!< AHB prescalers table values */
  extern const uint8_t APBPrescTable[8];    /*!< APB prescalers table values */
  
  
  /**
    * @}
    */
  
  /** @addtogroup STM32F3xx_System_Exported_Constants
    * @{
    */
  
  /**
    * @}
    */
  
  /** @addtogroup STM32F3xx_System_Exported_Macros
    * @{
    */
  
  /**
    * @}
    */
  
  /** @addtogroup STM32F3xx_System_Exported_Functions
    * @{
    */
    
  extern void SystemInit(void);
  extern void SystemCoreClockUpdate(void);
  /**
    * @}
    */
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /*__SYSTEM_STM32F3XX_H */
  
  /**
    * @}
    */
    
  /**
    * @}
    */  
  /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  