main.c.bak

S3C44B0X 键盘中断例子,测试板子上的几个按键产生中断用

#include "option.h"
#include "def.h"
#include "44b.h"
#include "44blib.h"


void Main(void)
{
    U8 which_key;		
    
    rSYSCFG=CACHECFG;   // Using 8KB Cache//

    Port_Init();
    
    Led_Display(0x0);

    rPCONG=0x00ff;	//EINT7~0
    rPUPG=0x0;		//pull up enable
    while(1) {	  
    	
    	while((rPDATG & 0xf0)==0xf0);
    	which_key=rPDATG&0xf0;
    switch(which_key)
    {
	case 0xe0:
	    Led_Display(0x1);
	    break;
	case 0xd0:
	    Led_Display(0x2);
	    break;
	case 0xb0:
	    Led_Display(0x4);
	    break;
	case 0x70:
	    Led_Display(0x7);
	    break;
	default :
	    break;
    }
    }
    
}