1 /* 2 * Copyright (c) 2009-2020 Arm Limited 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 /* 18 * This file is derivative of CMSIS V5.6.0 system_ARMv81MML.h 19 * Git SHA: b5f0603d6a584d1724d952fd8b0737458b90d62b 20 */ 21 22 #ifndef __SYSTEM_CORE_INIT_H__ 23 #define __SYSTEM_CORE_INIT_H__ 24 25 #include <stdint.h> 26 27 #ifdef __cplusplus 28 extern "C" { 29 #endif 30 31 extern uint32_t SystemCoreClock; /*!< System Clock Frequency (Core Clock) */ 32 extern uint32_t PeripheralClock; /*!< Peripheral Clock Frequency */ 33 34 /** 35 * \brief Initializes the system 36 */ 37 extern void SystemInit(void); 38 39 /** 40 * \brief Restores system core clock 41 */ 42 extern void SystemCoreClockUpdate(void); 43 44 #ifdef __cplusplus 45 } 46 #endif 47 48 #endif /* __SYSTEM_CORE_INIT_H__ */ 49
