利用循环左移函数流水灯---单片机C语言编程

#include

#include

void delayms(unsigned char ms)
// 延时子程序
{
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);//循环左移1位，点亮下一个LED
P0 = LED;
}
}