main.c

ARM7闪灯源码下载

/********************************************************************************************************
**名称:GPIO例子
**描述:通过IO口控制LED闪动
**器件:LPC2131@12MHz
**编写:YHR-Hexok
**日期:20070801
**修改:20070801
********************************************************************************************************/

#include <lpc213X.h>
#include <stdint.H>
#include "config.h"

#define  DEBUG_FLASH
__swi(0x00) void SwiHandle1(int Handle);

#define IRQDisable() SwiHandle1(0)
#define IRQEnable() SwiHandle1(1)
#define FIQDisable() SwiHandle1(2)
#define FIQEnable() SwiHandle1(3)
const unsigned long beep=(1<<8);	// P0.8控制beep，低电平点亮 

void Delay(uint32_t dly);
void TargetResetInit(void);
void FIQ_Exception(void);
void timer0_int(void);


int main(void)
{
	unsigned long temp=0;

    TargetResetInit();

    temp = PINSEL2;
    temp |= 0x00000004; 
    PINSEL2 = temp;		        // 设置管脚连接Jtag
	PINSEL0 = 0x00000000;		// 设置管脚连接GPIO
	IO0DIR  = beep;	        	// 设置DS2控制口为输出
    
   while(1)
   {
	IO0SET = beep;			// DS2熄灭
	Delay(50);
	IO0CLR = beep;			// DS2点亮
	Delay(50);  
   }
}


void Delay(uint32_t dly)
{
	uint32_t i=0;
	
	for ( ; dly>0; dly--)
	{
	  for(i=0;i<50000;i++)
	  {
	   i++;
	  }
    }
}


void timer0_int(void)
{
    while(1);                   //  change it to your code 这一句替换为自己的代码
}


void FIQ_Exception(void)
{
    while(1);                   // change it to your code  这一句替换为自己的代码
}


void TargetResetInit(void)
{
#ifdef DEBUG_RAM    
    MEMMAP = 0x2;                   //remap
#endif

#ifdef DEBUG_FLASH    
    MEMMAP = 0x1;                   //remap
#endif

#ifdef IN_CHIP    
    MEMMAP = 0x1;                   //remap
#endif

/* 设置系统各部分时钟 */
/* 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 << 5);
#endif
#if (Fcco / Fcclk) == 4
    PLLCFG = ((Fcclk / Fosc) - 1) | (1 << 5);
#endif
#if (Fcco / Fcclk) == 8
    PLLCFG = ((Fcclk / Fosc) - 1) | (2 << 5);
#endif
#if (Fcco / Fcclk) == 16
    PLLCFG = ((Fcclk / Fosc) - 1) | (3 << 5);
#endif
    PLLFEED = 0xaa;
    PLLFEED = 0x55;
    while((PLLSTAT & (1 << 10)) == 0);
    PLLCON = 3;
    PLLFEED = 0xaa;
    PLLFEED = 0x55;
    
/* 设置存储器加速模块 */
/* Set memory accelerater module*/
    MAMCR = 0;
#if Fcclk < 20000000
    MAMTIM = 1;
#else
#if Fcclk < 40000000
    MAMTIM = 2;
#else
    MAMTIM = 3;
#endif
#endif
    MAMCR = 2;
    
/* 初始化VIC */
/* initialize VIC*/
 VICIntEnClr = 0xffffffff;
 VICVectAddr = 0;
 VICIntSelect = 0;

    /* 添加自己的代码 */

}