keil开发arm例程

				/*****************************************************************************
				 *   target.c:  Target C file for Philips LPC214x Family Microprocessors
				 *
				 *   Copyright(C) 2006, Philips Semiconductor
				 *   All rights reserved.
				 *
				 *   History
				 *   2005.10.01  ver 1.00    Prelimnary version, first Release
				 *
				*****************************************************************************/
				
				#include "LPC214x.h"
				#include "type.h"
				#include "irq.h"
				#include "target.h"
				
				/*****************************************************************************
				** Function name:		IRQ_Exception
				**
				** Descriptions:		interrupt exceptional handler , change it as needed
				**
				** parameters:			None
				** Returned value:		None
				** 
				*****************************************************************************/
				void IRQ_Exception(void) __irq
				{
				    while(1);                   /*  change it to your code */
				}
				
				/*****************************************************************************
				** Function name:		FIQ_Exception
				**
				** Descriptions:		Fast interrupt exceptional handler , change it as needed
				**
				** parameters:			None
				** Returned value:		None
				**
				******************************************************************************/
				void FIQ_Exception(void) __fiq
				{
				    while(1);                   /* change it to your code */
				}
				
				/******************************************************************************
				** Function name:		TargetInit
				**
				** Descriptions:		Initialize the target board; it is called in a necessary 
				**				place, change it as needed
				**
				** parameters:			None
				** Returned value:		None
				** 
				******************************************************************************/
				void TargetInit(void)
				{
				    /* Add your codes here */
				}
				
				/******************************************************************************
				** Function name:		TargetResetInit
				**
				** Descriptions:		Initialize the target board before running the main() 
				**				function; User may change it as needed, but may not 
				**				deleted it.
				**
				** parameters:			None
				** Returned value:		None
				** 
				******************************************************************************/
				void TargetResetInit(void)
				{
				#ifdef __DEBUG_RAM    
				    MEMMAP = 0x2;                   /* set remap register */
				#endif
				
				#ifdef __DEBUG_FLASH    
				    MEMMAP = 0x1;                   /* set remap register */
				#endif
				
				#ifdef __IN_CHIP    
				    MEMMAP = 0x1;                   /* set remap register */
				#endif
				
				    /* Set system timers for each component */
				    PLLCON = 1;
				#if (Fpclk / (Fcclk / 4)) == 1
				    VPBDIV = 0;
				#endif
				#if (Fpclk / (Fcclk / 4)) == 2
				    VPBDIV = 2;
				#endif
				#if (Fpclk / (Fcclk / 4)) == 4
				    VPBDIV = 1;
				#endif
				
				#if (Fcco / Fcclk) == 2
				    PLLCFG = ((Fcclk / Fosc) - 1) | (0 				#endif
				#if (Fcco / Fcclk) == 4
				    PLLCFG = ((Fcclk / Fosc) - 1) | (1 				#endif
				#if (Fcco / Fcclk) == 8
				    PLLCFG = ((Fcclk / Fosc) - 1) | (2 				#endif
				#if (Fcco / Fcclk) == 16
				    PLLCFG = ((Fcclk / Fosc) - 1) | (3 				#endif
				    PLLFEED = 0xaa;
				    PLLFEED = 0x55;
				    while((PLLSTAT & (1 				    PLLCON = 3;
				    PLLFEED = 0xaa;
				    PLLFEED = 0x55;
				    
				    /* Set memory accelerater module*/
				    MAMCR = 0;
				#if Fcclk < 20000000
				    MAMTIM = 1;
				#else
				#if Fcclk < 40000000
				    MAMTIM = 2;
				#else
				    MAMTIM = 3;
				#endif
				#endif
				    MAMCR = 2;
				    
				    /* Add your codes here */
				    return;
				}
				
				/******************************************************************************
				**                            End Of File
				******************************************************************************/