/*--------------------
obsluha 7segmentoveho displeje - stopky
----------------------*/

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

int main (void)
{

DDRC = 0xff;	// cely port C je vystupni
DDRD = 0x7f;	//pouzivam dolni 7 bity portu D

unsigned int secd= 0, secj= 0, mind= 1, minj= 0, count= 0, start= 1;

PORTC = 0;
PORTD = 0;

//----------POLE HODNOT	
unsigned char gen []=
{
0b00000001,	//0
0b01001111,	//1
0b00010010,	//2
0b00000110,	//3
0b01001100,	//4
0b00100100,	//5
0b00100000,	//6
0b00001111,	//7
0b00000000,	//8
0b00000100,	//9
};

while (1)
{
	PORTC = gen [secj]; 
   PORTD = 0b1111101;
   _delay_ms(5);
   PORTD = 0x00;

   PORTC = gen [secd] ^128;
   PORTD = 0b1111110;
   _delay_ms(5);
   PORTD = 0x00;
   
   PORTC = gen [minj];
   PORTD = 0b11111011;
   _delay_ms(5);
   PORTD = 0x00;
   
   PORTC = gen [mind] ^128;
   PORTD =0b11110111;
   _delay_ms(5);
   PORTD = 0x00;
  
//if ((PIND & (1<<PD6))== 0) start= 0;	//start stopek 
//========PROBLEM===========
//----nastaveni casu  
while (start  == 1)
{ 
 if ((PIND & (1<<PD5))== 0)
 {
   minj++;
   _delay_ms(500);
 }
 if ((PIND & (1<<PD4))== 0)
 {
   secj++;
   _delay_ms(500);
 } 
if ((PIND & (1<<PD6))== 0) start= 0;	//start stopek 
}  
//==========================
  
  if (start== 0)
  {
   if(count>50)
   {
     if (mind == 0 && minj == 0 && secd == 0 && secj == 0) break;	//stopky konci
	  if (minj == 0 && secd == 0 && secj == 0)
	  {
		if (mind != 0) minj = 10;	
		mind--;		//zmena desitek minut
	  }
	  if (secd == 0 && secj == 0) 
	  {
		minj--;	//zmena jednotek minut
		secd = 6;
	  }
	  if (secj == 0)
     {
			secj=9;
			secd--;
     } else secj--; 
   count=0;
   }
   else count++; 
 }
 
}

return 0;
}

/**VYVOJOVE POZN:
- START na tlacitko FUNGUJE
- vyresit nasteveni casu tlacitky

*/