#include <89c51rd2.h>
	#define LEDS P2
	typedef unsigned short int WORD;
	typedef unsigned char BYTE;

	void Diody_w_lewo(void);
	void Diody_w_prawo(void);
	void Delay1(WORD);


	void main (void)
	{
			  unsigned int przycisk0=0;
			  unsigned int przycisk7=0;
			  BYTE k=1;
			  BYTE i=0x80;
	while(1)
	{
		 if(P3_0==0 || przycisk0==1)
		 	{
			przycisk7=0;
			przycisk0=1;
			//i=1;
			LEDS=~k;
			k= (k==0x80 ) ? 1 : k<<1;
			Delay1(0x1FFF);
			Delay1(0x1FFF);

			}


		 if (P3_7==0 || przycisk7==1)
		 	{
			przycisk7=1;
			przycisk0=0;

			//i=0x80;
			LEDS=~i;
			i= (i==1) ? 0x80 : i>>1;
			Delay1(0x1FFF);
			Delay1(0x1FFF);

			}


	 }


	}

	void Delay1 (WORD wait )
		{
			WORD i;
			for(i=0;i<wait;i++){};
		}


	void Diody_w_lewo(void)
		{
			x=1;
			static BYTE i=1;
			LEDS=~i;
			i= (i==0x80 ) ? 1 : i<<1;
			Delay1(0x1FFF);
			Delay1(0x1FFF);
		}

	void Diody_w_prawo(void)
		{
			y=1;
			static BYTE i=0x80;
			LEDS=~i;
			i= (i==1) ? 0x80 : i>>1;
			Delay1(0x1FFF);
			Delay1(0x1FFF);
		}