#define F_CPU 1000000UL

#include <avr/io.h>
#include <util/delay.h>
#include "lcd.h"


unsigned char i;

int main(void)
{  
	DDRB |= 1<<PB1;   // PB1 = vystup, na portu je po resetu "0", ledka tedy ted svítí 
   
	lcd_init(LCD_DISP_ON); /* initialize display, cursor off */
	lcd_clrscr();
     lcd_gotoxy(0,0);
   while (1)
   {
     char buffer [8];
 
 
  //int n, a=5, b=3;
   // int a=0;b=0;c=0;
   
	char a = rand();
	char b = rand();
  sprintf (buffer, "%d + %d = %d>", a, b, a+b);
  lcd_puts(buffer);
  _delay_ms(1000);
  for(char i=0;i<32;i++)
		{
			_delay_ms(100);
			lcd_command(0x18);
			PORTB = PINB ^ 1<<PB1;   // negace PB1 
_delay_ms(1000);
a = 0;
b = 0;
}
}
}