C语言按键控制led灯和蜂鸣器

循环流水灯和蜂鸣器，按键结束

#define rGPJ2CON (*(volatile unsigned long *)0xe0200280)
#define rGPJ2DAT (*(volatile unsigned long *)0xe0200284)

#define rGPD0CON (*(volatile unsigned long *)0xe02000a0)
#define rGPD0DAT (*(volatile unsigned long *)0xe02000a4)

#define rGPH2CON (*(volatile unsigned long *)0xe0200c40)
#define rGPH2DAT (*(volatile unsigned long *)0xe0200c44)

void Led_RunDelay(volatile int count);
int main(void)
{
        int i=0,temp=0,k1;
        rGPJ2CON = 0x1111;
        rGPJ2DAT = 0xf;
        
        rGPH2CON =0x00;
        rGPH2DAT = 0XFF;
        
        
        while (k1!=0)
        {
                rGPJ2DAT = ~(0x1<

流水灯循环5次

#define rGPJ2CON *((volatile unsigned int *)0xe0200280)
#define rGPJ2DAT *((volatile unsigned int *)0xe0200284)
void c_delay(void);
//要定义下函数，如果是放到api.h文件里的，就可以导入不用定义了
void led_test(void)
{
	led_init();
	int i=5;
	while(i--)
	{
		rGPJ2DAT=0xe;
		c_delay();
		rGPJ2DAT=0xd;
		c_delay();
		rGPJ2DAT=0xb;
		c_delay();
		rGPJ2DAT=0x7;
		c_delay();
		
	}
}
int led_init(void)
{
		rGPJ2CON&=~(0xffff<<0);
		rGPJ2CON|=(0x1111<<0);
		rGPJ2DAT|=(0xf<<0);
}
void c_delay(void)
{
        volatile int i,j;
        for(j = 0; j < 0x100; j++)
                for(i = 0; i < 1000; i++);
}

makefile

all:led.bin clean
led.bin:led.o
        arm-linux-ld -Ttext=0x40000000 led.o -o led.elf
        arm-linux-objcopy -O binary -S led.elf led.bin
led.o:led.c
        arm-linux-gcc -c -nostdlib -nostdinc led.c -o led.o
clean:
        rm -rf led.o led.elf