#include

#include

sbit KEY=P3^3;

void DelayUs2x(unsigned char t)

{

while(--t);

}

void DelayMs(unsigned int t)

{

while(t--) {

DelayUs2x(245);

DelayUs2x(245);

}

}

void main (void)

{

bit stop = 1;

char xx = 127;

while (1) {

if(!KEY) {

DelayMs(10);

if(!KEY) {

while(!KEY);

stop = !stop;

}

}

if (stop) xx = _cror_(xx, 1);

else xx = _crol_(xx, 1);

P0 = xx; DelayMs(500);

}

}