#define	GPBCON		(*(volatile unsigned long *)0x56000010)#define	GPBDAT		(*(volatile unsigned long *)0x56000014)#define	GPB5_out	(1<<(5*2))#define	GPB6_out	(1<<(6*2))#define	GPB7_out	(1<<(7*2))#define	GPB8_out	(1<<(8*2))void  wait(unsigned long dly){	for(; dly > 0; dly--);}int main(void){	unsigned long i = 0;		GPBCON = GPB5_out|GPB6_out|GPB7_out|GPB8_out;		// 將LED1-4對應的GPB5/6/7/8四個引腳設為輸出	while(1){		wait(30000);		GPBDAT = (~(i<<5));	 	// 根據i的值，點亮LED1-4		if(++i == 16)			i = 0;	}	return 0;}