/**************************************************************************//** * @file system_ARMCM0.h * @brief CMSIS Device System Header 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. */ #ifndef SYSTEM_ARMCM0_H #define SYSTEM_ARMCM0_H #ifdef __cplusplus extern "C" { #endif extern uint32_t SystemCoreClock; /*!< System Clock Frequency (Core Clock) */ /** \brief Setup the microcontroller system. Initialize the System and update the SystemCoreClock variable. */ extern void SystemInit (void); /** \brief Update SystemCoreClock variable. Updates the SystemCoreClock with current core Clock retrieved from cpu registers. */ extern void SystemCoreClockUpdate (void); #ifdef __cplusplus } #endif #endif /* SYSTEM_ARMCM0_H */