#define F_CPU 16000000UL
#include <avr/io.h>
#include <util/delay.h>
//PORT DEFINES
#define LED_Direction DDRC
#define LED_PORT PORTC
#define DIGIT_Direction DDRB
#define DIGIT_PORT PORTB
#define BUTTON_Direction DDRA
#define BUTTON_Vcc PORTA
#define BUTTON_PORT PINA
#define STATE_NONE_PRESSED 0x00
#define STATE_SOME_PRESSED 0xff
int main(void){ // setting ports as inputs and output
LED_Direction |= 0xff;
LED_PORT = 0xff;
DIGIT_Direction |= 0xff;
DIGIT_PORT = 0xff;
BUTTON_Direction |= 0x00;
BUTTON_Vcc = 0xff;
BUTTON_PORT = 0xff;
char symbols[]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90};
char pin[]={0,0,0,0};

char buttons = 0x00;
char button_state = STATE_NONE_PRESSED;
char key[8];
int tminSeg = 0;
int minSeg = 1;
int tsecSeg = 2;
int secSeg = 3;
int select = 0;

for(int i=0; i<8; i++){
    key[i] = ~(1<<i);
}

void incrementSec(int secSeg){
    pin[secSeg]++;
    if(pin[secSeg] > 9){
        pin[secSeg-1]++;
        pin[secSeg] = 0;
    }
}

void incrementTSec(int tsecSeg){
    pin[tsecSeg]++;
    if(pin[tsecSeg] > 6){
        pin[tsecSeg-1]++;
        pin[tsecSeg] = 0;
    }
}

void incrementMin(int minSeg){
    pin[minSeg]++;
    if(pin[minSeg] > 9){
        pin[minSeg-1]++;
        pin[minSeg] = 0;
    }
}

void incrementTMin(int tminSeg){
    pin[tminSeg]++;
    if(pin[tminSeg] > 6){
        pin[tminSeg] = 0;
    }
}

void decrementSec(int secSeg){
    pin[secSeg]--;
    if(pin[secSeg] < 0){
        pin[secSeg] = 0;
    }
}

void decrementTSec(int tsecSeg){
    pin[tsecSeg]--;
    if(pin[tsecSeg] < 0){
        pin[tsecSeg] = 0;
    }
}

void decrementMin(int minSeg){
    pin[minSeg]--;
    if(pin[minSeg] < 0){
        pin[minSeg] = 0;
    }
}

void decrementTMin(int tminSeg){
    pin[tminSeg]--;
    if(pin[tminSeg] < 0){
        pin[tminSeg] = symbols[pin[0]];
    }
}

int settingTimer = 0; // =================== czy jest wlaczone nastawianie minutnika (zbindujemy pod jakis guzik albo wywalisz ifa)
while(1) { //output clear
    for(int i=0; i<4; i++){
         LED_PORT = symbols[pin[i]];
         DIGIT_PORT = ~(0x01 << i); //shift 1bit to output on another digit

            if(settingTimer){  // =================== mysle ze powinno mrygac jedno, nie wiem czy to ktore chcemy XD
                if(select){
                    if(i == 0 || i == 1){
                        _delay_ms(40); //odświeżanie
                    } else {
                        _delay_ms(4); //odświeżanie
                    }
                }else{
                    if(i == 2 || i == 3){
                        _delay_ms(40); //odświeżanie
                    }else {
                        _delay_ms(4); //odświeżanie
                    }
                }
            } else {
             _delay_ms(4); //odświeżanie
            }
     }

     buttons = BUTTON_PORT;
     if(button_state == STATE_NONE_PRESSED){
         if(buttons != 0xff){
            button_state = STATE_SOME_PRESSED;
            if(settingTimer){
                if(buttons == key[2]){ //SELECT
                    select++;
                    if(select > 2){
                        select = 0;
                    }
                }
                if(buttons == key[3]){ //SELECT
                    // nie wiem, start timer czy cos
                }

                switch(select){
                    case 0:
                        if(buttons == key[1]){  //MORE MIN AND SEC
                            incrementTSec(tminSeg);
                        }
                        if(buttons == key[0]){
                            decrementTSec(tminSeg);
                        }
                    break;
                    case 1:
                        if(buttons == key[1]){  //MORE MIN AND SEC
                            incrementTMin(tminSeg);
                        }
                        if(buttons == key[0]){
                            decrementTMin(tminSeg);
                        }
                    break;
                }
            } else {
                if(buttons == key[0]){  // ===================  jesli nacisniemy guzik nr 0 to zaczniemy ustawiac
                   settingTimer = 1;
                }
            }
         }
     }





      if(button_state == STATE_SOME_PRESSED){
          // Wait for buttons to stop being pressed
          if(buttons == 0xff){
              button_state = STATE_NONE_PRESSED;
          }
      }
  }
            }