| /* |
| |
| 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. |
| |
| NOTICE: This file has been modified by Nordic Semiconductor ASA. |
| |
| */ |
| |
| #ifndef SYSTEM_NRF51_H |
| #define SYSTEM_NRF51_H |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #include <stdint.h> |
| |
| |
| extern uint32_t SystemCoreClock; /*!< System Clock Frequency (Core Clock) */ |
| |
| /** |
| * Initialize the system |
| * |
| * @param none |
| * @return none |
| * |
| * @brief Setup the microcontroller system. |
| * Initialize the System and update the SystemCoreClock variable. |
| */ |
| extern void SystemInit (void); |
| |
| /** |
| * Update SystemCoreClock variable |
| * |
| * @param none |
| * @return none |
| * |
| * @brief Updates the SystemCoreClock with current core Clock |
| * retrieved from cpu registers. |
| */ |
| extern void SystemCoreClockUpdate (void); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* SYSTEM_NRF51_H */ |
