/* Copyright (c) 2012 ARM LIMITED | |
* All rights reserved. | |
* | |
* Redistribution and use in source and binary forms, with or without | |
* modification, are permitted provided that the following conditions are met: | |
* | |
* * Redistributions of source code must retain the above copyright notice, this | |
* list of conditions and the following disclaimer. | |
* | |
* * Redistributions in binary form must reproduce the above copyright notice, | |
* this list of conditions and the following disclaimer in the documentation | |
* and/or other materials provided with the distribution. | |
* | |
* * Neither the name of ARM nor the names of its contributors may be used to | |
* endorse or promote products derived from this software without specific | |
* prior written permission. | |
* | |
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE | |
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | |
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | |
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
* | |
*/ | |
#ifndef SYSTEM_NRF52840_H | |
#define SYSTEM_NRF52840_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_NRF52840_H */ |