テスト用

Fork of nRF51822 by Nordic Semiconductor

nordic/nrf-sdk/system_nrf51.h

Committer:
bogdanm
Date:
2014-03-26
Revision:
0:eff01767de02
Child:
37:c29c330d942c

File content as of revision 0:eff01767de02:

/* Copyright (c) 2009 Nordic Semiconductor. All Rights Reserved.
 *
 * The information contained herein is property of Nordic Semiconductor ASA.
 * Terms and conditions of usage are described in detail in NORDIC
 * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
 *
 * Licensees are granted free, non-transferable use of the information. NO
 * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
 * the file.
 *
 */


#ifndef SYSTEM_NRF51_H
#define SYSTEM_NRF51_H

#ifdef __cplusplus
extern "C" {
#endif

#include <stdint.h>
#include "nordic_global.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 */