4412 上的裸板 跑马灯

#define GPM4CON		(*(volatile unsigned int *)0x110002E0)//设置地址

#define GPM4DAT		(*(volatile unsigned int *)0x110002E4)

#define   setbit(x,y)    x|=(1<<y) //将X的第Y位置1  

#define   clrbit(x,y)    x&=~(1<<y) //将X的第Y位清0

#define   setone(x)      (~(x &= ~1))

void delay(volatile int d)

{

    while (d--);

}



int main(void)

{

    int i = 0;


    GPM4CON = 0x1111; //设置地址的值

    while(1)

	{
		setone(GPM4DAT);
                GPM4DAT = 14;// setbitGPM4DAT , 0)  
                delay(10000000);
                GPM4DAT = 13;
                delay(10000000);
                GPM4DAT =11;
		delay(10000000);
		GPM4DAT = 7;
		delay(10000000);		

	}

    return 0;

}

用汇编点灯

/* led (GPM4_0~3) on */

ldr r0, =0x110002E0
ldr r1, =0x00001111
str r1, [r0]
ldr r1, =0x0e
str r1, [r0, #0x04]