#include "s3c2410.h"#include "interrupt.h"#include "serial.h"void EINT_Handle(){	unsigned long oft = INTOFFSET;	switch( oft )	{		case 1:	printk("EINT1, K1 pressed!\n\r");	break;		case 2:	printk("EINT2, K2 pressed!\n\r");	break;		case 3:	printk("EINT3, K3 pressed!\n\r");	break;		case 4:	printk("EINT7, K4 pressed!\n\r");	break;		default:	printk("Interrupt unknown!\n\r");	break;	}	//清中斷	if( oft == 4 ) EINTPEND = 1<<7;		//EINT4-7合用IRQ4，注意EINTPEND[3:0]保留未用，向這些位寫入1可能導致未知結果	SRCPND = 1<<oft;		INTPND	= INTPND;	 }