2017-05-02 16:42:41 +08:00
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/*
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Copyright (c) 2009-2017 ARM Limited. All rights reserved.
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SPDX-License-Identifier: Apache-2.0
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Licensed under the Apache License, Version 2.0 (the License); you may
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not use this file except in compliance with the License.
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You may obtain a copy of the License at
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www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an AS IS BASIS, WITHOUT
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WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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NOTICE: This file has been modified by Nordic Semiconductor ASA.
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*/
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2016-08-26 02:41:46 +08:00
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#ifndef SYSTEM_NRF51_H
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#define SYSTEM_NRF51_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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extern uint32_t SystemCoreClock; /*!< System Clock Frequency (Core Clock) */
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/**
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* Initialize the system
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*
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* @param none
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* @return none
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*
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* @brief Setup the microcontroller system.
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* Initialize the System and update the SystemCoreClock variable.
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*/
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extern void SystemInit (void);
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/**
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* Update SystemCoreClock variable
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*
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* @param none
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* @return none
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*
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* @brief Updates the SystemCoreClock with current core Clock
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* retrieved from cpu registers.
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*/
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extern void SystemCoreClockUpdate (void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* SYSTEM_NRF51_H */
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