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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;
delay(50000);
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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