基于mini2440流水灯（裸机代码）

基于mini2440流水灯（裸机代码）

[cpp]
#include "def.h"  
#include "option.h"  
#include "2440addr.h"       
#include "2440lib.h"  
#include "2440slib.h"     
 
 
int System_init(void); 
void rDelay(unsigned int x ); 
 
 
int Main() //主函数   
 {   
  
    System_init();  //初始化   
    while(1)    //死循环   
         {      
            rGPBDAT = ~(0xf<<5); //LED1-4亮(GPB5-8)=0   
            rDelay(120); 
            rGPBDAT = ~(0x1<<5); //LED1亮 GPB5=0  
            rDelay(120); 
            rGPBDAT = ~(0x1<<6); //LED2亮 GPB6=0  
            rDelay(120); 
            rGPBDAT = ~(0x1<<7); //LED3亮 GPB7=0  
            rDelay(120); 
            rGPBDAT = ~(0x1<<8); //LED4亮 GPB8=0  
            rDelay(120);            
         } 
         return(0); 
 } 
  
 int System_init(void)      //系统初始化函数   
 { 
  rGPBCON = 0xd57fc;    // GPB5,GPB6,GPB7,GPB8设置为输出  
  rGPBDAT |= ((1<<5)|(1<<6)|(1<<7)|(1<<8));         //使LED全灭  
  } 
 
void rDelay(unsigned int x ) 
 { 
         unsigned int i,j,k; 
         for(i=0;i<=x;i++) 
            for(j=0;j<=0xff;j++) 
                for(k=0;k<=0xff;k++); 
  
}