text: /* MPS2 CMSIS Library
  *
  * Copyright (c) 2006-2016 ARM Limited
  * All rights reserved.
  *
  * 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 the copyright holder 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.
  *******************************************************************************
  * @file     system_CMSDK_CM0.c
  * @brief    CMSIS Device System Source File for
  *           CMSDK_M0 Device
  *
  *******************************************************************************/
  
  
  #include "CMSDK_CM0.h"
  
  /*----------------------------------------------------------------------------
    Define clocks
   *----------------------------------------------------------------------------*/
  #define __XTAL            (50000000UL)    /* Oscillator frequency             */
  
  #define __SYSTEM_CLOCK    (__XTAL / 2)
  
  
  /*----------------------------------------------------------------------------
    Clock Variable definitions
   *----------------------------------------------------------------------------*/
  uint32_t SystemCoreClock = __SYSTEM_CLOCK;/*!< System Clock Frequency (Core Clock)*/
  
  
  /*----------------------------------------------------------------------------
    Clock functions
   *----------------------------------------------------------------------------*/
  /**
   * Update SystemCoreClock variable
   *
   * @param  none
   * @return none
   *
   * @brief  Updates the SystemCoreClock with current core Clock
   *         retrieved from cpu registers.
   */
  void SystemCoreClockUpdate (void)
  {
  
    SystemCoreClock = __SYSTEM_CLOCK;
  
  }
  
  /**
   * Initialize the system
   *
   * @param  none
   * @return none
   *
   * @brief  Setup the microcontroller system.
   *         Initialize the System.
   */
  void SystemInit (void)
  {
  
    SystemCoreClock = __SYSTEM_CLOCK;
  
  }
  