main.c

S3C2440的启动代码和io测试程序

#define IOPMOD  (*(volatile unsigned *)0x03ff5000)
#define IOPDATA (*(volatile unsigned *)0x03ff5008)
void Delay(unsigned int);

void Delay(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++);
}



int Main()
{
 unsigned long LED;
 IOPMOD=0XFFFFFFFF;
 IOPDATA=0X01;
 while(1)
 {
  LED=IOPDATA;
  LED=(LED<<1);
  IOPDATA=LED;
  Delay(10);
  if(!(IOPDATA&0x0f))
     IOPDATA=0x01;
 }
 return (0);
}