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system_SAM3U.c File Reference
Functions | Variables

system_SAM3U.c File Reference

CMSIS Cortex-M3 Device Peripheral Access Layer Source File for the Atmel SAM3U Device Series. More...

Go to the source code of this file.

Functions

void SystemCoreClockUpdate (void)
 Updates the SystemCoreClock variable.
void SystemInit (void)
 Initialize the system.

Variables

uint32_t SystemCoreClock = __CORE_CLK
 System clock frequency (core clock)

Detailed Description

CMSIS Cortex-M3 Device Peripheral Access Layer Source File for the Atmel SAM3U Device Series.

Version:
V1.10
Date:
16. April 2013
Note:
Copyright (C) 2019-2013 ARM Limited. All rights reserved.
ARM Limited (ARM) is supplying this software for use with Cortex-M processor based microcontrollers. This file can be freely distributed within development tools that are supporting such ARM based processors.
THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. ARM SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.

Definition in file system_SAM3U.c.

Function Documentation

void SystemCoreClockUpdate ( void   )

Updates the SystemCoreClock variable.

Update SystemCoreClock variable.

It must be called whenever the core clock is changed during program execution. SystemCoreClockUpdate() evaluates the clock register settings and calculates the current core clock.

Definition at line 368 of file system_SAM3U.c.

void SystemInit ( void   )

Initialize the system.

Setup the microcontroller system.

Parameters:
none
Returns:
none

Setup the microcontroller system. Initialize the System and update the SystemFrequency variable.

Definition at line 439 of file system_SAM3U.c.

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