system_LPC17xx.c File Reference

CMSIS Device System Source File for NXP LPC17xx Device Series. More...

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

Include dependency graph for system_LPC17xx.c:

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   0x00004000
#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)   ((2ULL * __M * __F_IN) / __N)
#define	__CCLK_DIV   (((CCLKCFG_Val ) & 0x00FF) + 1)
#define	__CORE_CLK   (__FCCO(OSC_CLK) / __CCLK_DIV)

Functions
void	SystemCoreClockUpdate (void)
void	SystemInit (void)

Variables
uint32_t	SystemCoreClock = __CORE_CLK

Detailed Description

CMSIS Device System Source File for NXP LPC17xx Device Series.

Version

V1.14

Date

05. April 2016

Macro Definition Documentation

__CCLK_DIV

#define __CCLK_DIV   (((CCLKCFG_Val ) & 0x00FF) + 1)

__CORE_CLK

#define __CORE_CLK   (__FCCO(OSC_CLK) / __CCLK_DIV)

__FCCO

#define __FCCO

(

__F_IN

)

((2ULL * __M * __F_IN) / __N)

__M

#define __M   (((PLL0CFG_Val ) & 0x7FFF) + 1)

__N

#define __N   (((PLL0CFG_Val >> 16) & 0x00FF) + 1)

CCLKCFG_Val

#define CCLKCFG_Val   0x00000003

CHECK_RANGE

#define CHECK_RANGE	(		val,
			min,
			max
	)		((val < min) || (val > max))

CHECK_RSVD

#define CHECK_RSVD	(		val,
			mask
	)		(val & mask)

CLKOUTCFG_Val

#define CLKOUTCFG_Val   0x00000000

CLKSRCSEL_Val

#define CLKSRCSEL_Val   0x00000001

CLOCK_SETUP

#define CLOCK_SETUP   1

FLASH_SETUP

#define FLASH_SETUP   1

FLASHCFG_Val

#define FLASHCFG_Val   0x00004000

IRC_OSC

#define IRC_OSC   ( 4000000UL) /* Internal RC oscillator frequency */

OSC_CLK

#define OSC_CLK   ( XTAL) /* Main oscillator frequency */

PCLKSEL0_Val

#define PCLKSEL0_Val   0x00000000

PCLKSEL1_Val

#define PCLKSEL1_Val   0x00000000

PCONP_Val

#define PCONP_Val   0x042887DE

PLL0_SETUP

#define PLL0_SETUP   1

PLL0CFG_Val

#define PLL0CFG_Val   0x00050063

PLL1_SETUP

#define PLL1_SETUP   1

PLL1CFG_Val

#define PLL1CFG_Val   0x00000023

RTC_CLK

#define RTC_CLK   ( 32768UL) /* RTC oscillator frequency */

SCS_Val

#define SCS_Val   0x00000020

USBCLKCFG_Val

#define USBCLKCFG_Val   0x00000000

XTAL

#define XTAL   (12000000UL) /* Oscillator frequency */

Function Documentation

SystemCoreClockUpdate()

void SystemCoreClockUpdate

(

void

)

SystemInit()

void SystemInit

(

void

)

Variable Documentation

SystemCoreClock

uint32_t SystemCoreClock = __CORE_CLK