init.c

2440 中断实例 按键盘键点亮LED灯

#include "s3c2440.h"


void disable_watch_dog(void)
{
	WTCON = 0;

}

void init_led(void)
{
		LEDCON= (1<<16) | (1<<14) | (1<<12) | (1<<10);

}

void init_irq(void)
{
	/*K1~K4*/
	GPGCON = (2<<0) | (2<<6) | (2<<10) | (2<<12) ;
	//eint8 11 13 14 in EINTMASK enable
	EINTMASK &= (~(1<<8)) & (~(1<<11)) & (~(1<<13)) & (~(1<<14)) ;

	//EINT8_23 enable
	INTMSK	&=  (~(1<<5)); 
}