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system_LPC17xx.c File Reference

CMSIS Cortex-M3 Device Peripheral Access Layer Source File for the NXP LPC17xx Device Series. More...

#include <stdint.h>
#include "LPC17xx.h"

Go to the source code of this file.

Macros

#define CLOCK_SETUP   1
 
#define SCS_Val   0x00000020
 
#define CLKSRCSEL_Val   0x00000001
 
#define PLL0_SETUP   1
 
#define PLL0CFG_Val   0x00050063
 
#define PLL1_SETUP   1
 
#define PLL1CFG_Val   0x00000023
 
#define CCLKCFG_Val   0x00000003
 
#define USBCLKCFG_Val   0x00000000
 
#define PCLKSEL0_Val   0x00000000
 
#define PCLKSEL1_Val   0x00000000
 
#define PCONP_Val   0x042887DE
 
#define CLKOUTCFG_Val   0x00000000
 
#define FLASH_SETUP   1
 
#define FLASHCFG_Val   0x0000303A
 
#define CHECK_RANGE(val, min, max)   ((val < min) || (val > max))
 
#define CHECK_RSVD(val, mask)   (val & mask)
 
#define XTAL   (12000000UL) /* Oscillator frequency */
 
#define OSC_CLK   ( XTAL) /* Main oscillator frequency */
 
#define RTC_CLK   ( 32768UL) /* RTC oscillator frequency */
 
#define IRC_OSC   ( 4000000UL) /* Internal RC oscillator frequency */
 
#define __M   (((PLL0CFG_Val ) & 0x7FFF) + 1)
 
#define __N   (((PLL0CFG_Val >> 16) & 0x00FF) + 1)
 
#define __FCCO(__F_IN)   ((2 * __M * __F_IN) / __N)
 
#define __CCLK_DIV   (((CCLKCFG_Val ) & 0x00FF) + 1)
 
#define __CORE_CLK   (__FCCO(OSC_CLK) / __CCLK_DIV)
 

Functions

void SystemCoreClockUpdate (void)
 Updates the SystemCoreClock with current core Clock retrieved from cpu registers. More...
 
void SystemInit (void)
 Setup the microcontroller system. Initialize the System. More...
 

Variables

uint32_t SystemCoreClock = __CORE_CLK
 

Detailed Description

CMSIS Cortex-M3 Device Peripheral Access Layer Source File for the NXP LPC17xx Device Series.

Version
V1.03
Date
07. October 2009
Note
Copyright (C) 2009 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_LPC17xx.c.