1 /* 2 3 Copyright (c) 2009-2023 ARM Limited. All rights reserved. 4 5 SPDX-License-Identifier: Apache-2.0 6 7 Licensed under the Apache License, Version 2.0 (the License); you may 8 not use this file except in compliance with the License. 9 You may obtain a copy of the License at 10 11 www.apache.org/licenses/LICENSE-2.0 12 13 Unless required by applicable law or agreed to in writing, software 14 distributed under the License is distributed on an AS IS BASIS, WITHOUT 15 WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 See the License for the specific language governing permissions and 17 limitations under the License. 18 19 NOTICE: This file has been modified by Nordic Semiconductor ASA. 20 21 */ 22 23 #ifndef SYSTEM_NRF52_H 24 #define SYSTEM_NRF52_H 25 #ifndef __ASSEMBLY__ 26 #ifdef __cplusplus 27 extern "C" { 28 #endif 29 30 #include <stdint.h> 31 32 /** 33 \brief Exception / Interrupt Handler Function Prototype 34 */ 35 typedef void(*VECTOR_TABLE_Type)(void); 36 37 /** 38 \brief System Clock Frequency (Core Clock) 39 */ 40 extern uint32_t SystemCoreClock; 41 42 /** 43 \brief Setup the microcontroller system. 44 Initialize the System and update the SystemCoreClock variable. 45 */ 46 extern void SystemInit (void); 47 48 49 /** 50 \brief Update SystemCoreClock variable. 51 Updates the SystemCoreClock with current core Clock retrieved from cpu registers. 52 */ 53 extern void SystemCoreClockUpdate (void); 54 55 56 #ifdef __cplusplus 57 } 58 #endif 59 60 #endif /* __ASSEMBLY__ */ 61 #endif /* SYSTEM_NRF52_H */ 62
