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#include "reg52.h"
#include "intrins.h"
typedef unsigned char u8;
typedef unsigned int u16;
#define led P2
void delay(u16 i)
{
while(i--);
}
void main()
{
u8 i=0;
led=0xfe; //1111 1110
delay(50000); //450ms
while(1)
{
for(i=0;i<7;i++)
{
led=_crol_(led,1);
delay(50000);
}
for(i=0;i<7;i++)
{
led=_cror_(led,1);
delay(50000);
}
}
}
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