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Show/hide line numbers system_SAM3U.h Source File

system_SAM3U.h

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00001 /**************************************************************************//**
00002  * @file     system_SAM3U.h
00003  * @brief    CMSIS Cortex-M3 Device Peripheral Access Layer Header File
00004  *           for the Atmel SAM3U Device Series
00005  * @version  V1.10
00006  * @date     17. April 2013
00007  *
00008  * @note
00009  * Copyright (C) 2009-2013 ARM Limited. All rights reserved.
00010  *
00011  * @par
00012  * ARM Limited (ARM) is supplying this software for use with Cortex-M 
00013  * processor based microcontrollers.  This file can be freely distributed 
00014  * within development tools that are supporting such ARM based processors. 
00015  *
00016  * @par
00017  * THIS SOFTWARE IS PROVIDED "AS IS".  NO WARRANTIES, WHETHER EXPRESS, IMPLIED
00018  * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
00019  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
00020  * ARM SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
00021  * CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
00022  *
00023  ******************************************************************************/
00024 
00025 
00026 #ifndef __SYSTEM_SAM3U_H
00027 #define __SYSTEM_SAM3U_H
00028 
00029 #ifdef __cplusplus
00030  extern "C" {
00031 #endif 
00032 
00033 extern uint32_t SystemCoreClock;     /*!< System Clock Frequency (Core Clock)  */
00034 
00035 
00036 /**
00037  * Initialize the system
00038  *
00039  * @param  none
00040  * @return none
00041  *
00042  * @brief  Setup the microcontroller system.
00043  *         Initialize the System and update the SystemCoreClock variable.
00044  */
00045 extern void SystemInit (void);
00046 
00047 /**
00048  * Update SystemCoreClock variable
00049  *
00050  * @param  none
00051  * @return none
00052  *
00053  * @brief  Updates the SystemCoreClock with current core Clock 
00054  *         retrieved from cpu registers.
00055  */
00056 extern void SystemCoreClockUpdate (void);
00057 
00058 #ifdef __cplusplus
00059 }
00060 #endif
00061 
00062 #endif /* __SYSTEM_SAM3U_H */