lg4.c

嵌入式的简单开发源码示例

//#include <dos.h> 
#define rGPFCON (*(volatile unsigned *) 0x56000010)
#define rGPFDAT (*(volatile unsigned *) 0x56000014)
#define rGPFUP (*(volatile unsigned *) 0x56000018)

//void delay(unsigned int);
int Main()
{
 unsigned long LED;
 long LED1;
 int kk;
 rGPFCON=0x00154000;//控制寄存器初始化
 rGPFUP  = 0x000fffff;
rGPFDAT=0xffff;
rGPFDAT=0x0;
rGPFDAT=0xffff;
rGPFDAT=0x0;

 for(;;)
 {
   int kj;

 rGPFDAT=0xffff;
    for(LED=0;LED<0xffffff;LED++)
    {
      ;
     }
     
     rGPFDAT=0x0;
     
     for(LED1=0;LED1<0xffffff;LED1++)
    {
     //sleep(1);
     }
  for(kk=0;kk<0xffffff;kk++)
    {
     ;
     }
       for(kj=0;kj<0xffffff;kj++)
    {
     ;
     }
     
   }
 return(0);
 
}