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| | | /****************************************************************************** |
| | | * @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; |
| | | } |