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| 1 | void startUP() {
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| 2 | cli(); //Disable Interrupts | |
| 3 | sekunde = minute = sati = timerCounter = 0; | |
| 4 | ||
| 5 | TIMSK |= (1<<OCIE0A) | (1<<TOIE0); //Enable OCIE0A: Timer/Counter0 Output Compare Match A Interrupt Enable | |
| 6 | ||
| 7 | DDRB = 0xFF; | |
| 8 | PORTB = 0x00; | |
| 9 | DDRD |= (1<<BUFFER0CLK) | (1<<BUFFER1CLK) | (1<<BUFFER2CLK) | (1<<BUFFER3CLK); //Postavi pinove na kojima su baferi kao izlazne | |
| 10 | PORTD |= (1<<BUFFER0CLK) | (1<<BUFFER1CLK) | (1<<BUFFER2CLK) | (1<<BUFFER3CLK); //Stavi logicke 1 na CLK od bafera (podaci se upisuju kad dodje HIGH-to-LOW tranzicija) | |
| 11 | ||
| 12 | //Postavi sve sedmosegmentne displeje na neku pocetnu vrednost | |
| 13 | SetBufferValue(BUFFER0CLK, SSEG[10]); | |
| 14 | SetBufferValue(BUFFER1CLK, SSEG[5]); | |
| 15 | SetBufferValue(BUFFER2CLK, SSEG[1]); | |
| 16 | SetBufferValue(BUFFER3CLK, SSEG[2]); | |
| 17 | ||
| 18 | ||
| 19 | CLKPR = (1<<CLKPCE); //Ukljuci prescale originalnog takta | |
| 20 | CLKPR |= (1<<CLKPS0); // Divide by 1 | |
| 21 | ||
| 22 | ||
| 23 | TCCR0A |= (1 << WGM01); // Configure Timer 0 for CTC mode | |
| 24 | TCCR0A |= (1 << CS01) | (1 << CS00); //Prescaling the timer | |
| 25 | - | OCR0A = 0xFA; // Set CTC compare value to 0.5Hz AVR clock, with pre-scaler of 1024 |
| 25 | + | OCR0A = 0xFA; // Set CTC compare value |
| 26 | TCNT0 = 0x00; //Podesi brojac odakle da pocne da broji | |
| 27 | ||
| 28 | ||
| 29 | ||
| 30 | sei(); //Enable Interrupts | |
| 31 | } | |
| 32 | ||
| 33 | ||
| 34 | //Timer0 Interrupt funkcija | |
| 35 | ISR(TIMER0_COMPA_vect) | |
| 36 | {
| |
| 37 | //8MHz, MCU clock Prescale => 1, Timer Prescale => 128, Timer Interrupt every => 4ms | |
| 38 | //TODO:Finish Interrupt timer function | |
| 39 | timerCounter++; | |
| 40 | if(timerCounter >= 250) {
| |
| 41 | sekunde++; | |
| 42 | timerCounter = 0; | |
| 43 | PORTD ^= (1<<SECPIN); | |
| 44 | } | |
| 45 | ||
| 46 | if(sekunde >= 60) {
| |
| 47 | minute++; | |
| 48 | sekunde = 0; | |
| 49 | } | |
| 50 | ||
| 51 | if(minute >= 60) {
| |
| 52 | sati++; | |
| 53 | minute = 0; | |
| 54 | } | |
| 55 | ||
| 56 | if(sati >=24) {
| |
| 57 | sati = 0; | |
| 58 | } | |
| 59 | } |
