1 /**************************************************************************//** 2 * @file system_ARMCM55.h 3 * @brief CMSIS Device System Header File for 4 * ARMCM55 Device 5 * @version V1.0.0 6 * @date 20. February 2020 7 ******************************************************************************/ 8 /* 9 * Copyright (c) 2020 Arm Limited. All rights reserved. 10 * 11 * SPDX-License-Identifier: Apache-2.0 12 * 13 * Licensed under the Apache License, Version 2.0 (the License); you may 14 * not use this file except in compliance with the License. 15 * You may obtain a copy of the License at 16 * 17 * www.apache.org/licenses/LICENSE-2.0 18 * 19 * Unless required by applicable law or agreed to in writing, software 20 * distributed under the License is distributed on an AS IS BASIS, WITHOUT 21 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 22 * See the License for the specific language governing permissions and 23 * limitations under the License. 24 */ 25 26 #ifndef SYSTEM_ARMCM55_H 27 #define SYSTEM_ARMCM55_H 28 29 #ifdef __cplusplus 30 extern "C" { 31 #endif 32 33 /** 34 \brief Exception / Interrupt Handler Function Prototype 35 */ 36 typedef void(*VECTOR_TABLE_Type)(void); 37 38 /** 39 \brief System Clock Frequency (Core Clock) 40 */ 41 extern uint32_t SystemCoreClock; 42 43 /** 44 \brief Setup the microcontroller system. 45 46 Initialize the System and update the SystemCoreClock variable. 47 */ 48 extern void SystemInit (void); 49 50 51 /** 52 \brief Update SystemCoreClock variable. 53 54 Updates the SystemCoreClock with current core Clock retrieved from cpu registers. 55 */ 56 extern void SystemCoreClockUpdate (void); 57 58 #ifdef __cplusplus 59 } 60 #endif 61 62 #endif /* SYSTEM_ARMCM55_H */ 63