流水灯 按照由亮变暗的模式运行

void led_breath1(int d1,int mode)

{

// int speed=1000;

int x=0;

switch(mode)

{

case 1://由暗转亮

while(x++<speed)

{

GPFDAT=0xff;

cdelay(speed-x);

GPFDAT=~(1<<(d1+3));

cdelay(x);

}

break;

case 0://灯由亮转暗

while(x++<speed)

{

GPFDAT=~(1<<(d1+3));

cdelay(speed-x);

GPFDAT=0xff;

cdelay(x);

}

break;

}

}

void led_loop2(void)

{

while(1)

{

led_breath1(1,1);

led_breath1(1,0);

led_breath1(2,1);

led_breath1(2,0);

led_breath1(3,1);

led_breath1(3,0);

led_breath1(4,1);

led_breath1(4,0);

led_breath1(3,1);

led_breath1(3,0);

led_breath1(2,1);

led_breath1(2,0);

led_breath1(1,1);

led_breath1(1,0);

}

}