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Diff: TARGET_NRF51_MICROBIT/system_nrf51.h
- Revision:
- 0:e1a608bb55e8
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TARGET_NRF51_MICROBIT/system_nrf51.h Thu Apr 07 18:33:58 2016 +0100 @@ -0,0 +1,68 @@ +/* Copyright (c) 2013, Nordic Semiconductor ASA + * 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 Nordic Semiconductor ASA 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_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 */