#include<reg52.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
void Delay(uint del)
{
uint i,j;
for(i=0; i<del; i++)
for(j=0; j<1827; j++)
;
}
void Main(void)
{
uchar i;
while(1)
{
P0 = 0x7f;
for(i=0; i<7; i++)
{
P0 = _cror_(P0, 1);
Delay(15);
}
P0 = 0xfe;
for(i=0; i<7; i++)
{
P0 = _crol_(P0, 1);
Delay(200);
}
}
}