/******************************************************************************
 * @file     system_MK8000.c
 * @brief    CMSIS Device System Source File for
 *           Device MK8000
 * @version  V5.00
 * @date     10. January 2018
 ******************************************************************************/
/*
 * Copyright (c) 2009-2018 Arm Limited. All rights reserved.
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Licensed under the Apache License, Version 2.0 (the License); you may
 * not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an AS IS BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "MK800X.h"

/*----------------------------------------------------------------------------
  Define clocks
 *----------------------------------------------------------------------------*/
/* ToDo: add here your necessary defines for device initialization
         following is an example for different system frequencies */
#define XTAL (38400000U) /* Oscillator frequency             */

#define SYSTEM_CLOCK (13 * XTAL / 8)

/*----------------------------------------------------------------------------
  System Core Clock Variable
 *----------------------------------------------------------------------------*/
/* ToDo: initialize SystemCoreClock with the system core clock frequency value
         achieved after system intitialization.
         This means system core clock frequency after call to SystemInit() */
uint32_t SystemCoreClock = SYSTEM_CLOCK; /* System Clock Frequency (Core Clock)*/

/*----------------------------------------------------------------------------
  Clock functions
 *----------------------------------------------------------------------------*/

void SystemCoreClockUpdate(void) /* Get Core Clock Frequency      */
{
    /* ToDo: add code to calculate the system frequency based upon the current
             register settings.
             This function can be used to retrieve the system core clock frequeny
             after user changed register sittings. */
    SystemCoreClock = SYSTEM_CLOCK;
}

void SystemInit(void)
{
    /* ToDo: add code to initialize the system
             do not use global variables because this function is called before
             reaching pre-main. RW section maybe overwritten afterwards. */
    SystemCoreClock = SYSTEM_CLOCK;
}