| /**************************************************************************//** |
| * @file system_ARMCM0.c |
| * @brief CMSIS Device System Source File for |
| * ARMCM0 Device |
| * @version V5.3.1 |
| * @date 09. July 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 "ARMCM0.h" |
| |
| /*---------------------------------------------------------------------------- |
| Define clocks |
| *----------------------------------------------------------------------------*/ |
| #define XTAL (50000000UL) /* Oscillator frequency */ |
| |
| #define SYSTEM_CLOCK (XTAL / 2U) |
| |
| |
| /*---------------------------------------------------------------------------- |
| System Core Clock Variable |
| *----------------------------------------------------------------------------*/ |
| uint32_t SystemCoreClock = SYSTEM_CLOCK; /* System Core Clock Frequency */ |
| |
| |
| /*---------------------------------------------------------------------------- |
| System Core Clock update function |
| *----------------------------------------------------------------------------*/ |
| void SystemCoreClockUpdate (void) |
| { |
| SystemCoreClock = SYSTEM_CLOCK; |
| } |
| |
| /*---------------------------------------------------------------------------- |
| System initialization function |
| *----------------------------------------------------------------------------*/ |
| void SystemInit (void) |
| { |
| SystemCoreClock = SYSTEM_CLOCK; |
| } |