利用循環(huán)左移函數(shù)流水燈---單片機(jī)C語言編程

#include

#include

void delayms(unsigned char ms)
// 延時子程序
{
unsigned char i;
while(ms--)
{
for(i = 0; i < 120; i++);
}
}

main()
{
unsigned char LED;
LED = 0xfe;
P0 = LED;

while(1)
{
delayms(250);
LED = _crol_(LED,1);//循環(huán)左移1位，點亮下一個LED
P0 = LED;
}
}