#define F_CPU 1000000UL

#include <avr/io.h>

#include <util/delay.h>

#include <avr/eeprom.h>

#include <inttypes.h>

#include <avr/interrupt.h>

#include <avr/iotn2313.h>

#include <avr/pgmspace.h>



uint8_t angka1=10 ;

uint8_t angka2=10 ;

uint8_t angka3=10 ;

uint8_t angka4=10 ;

uint8_t segstep=0;



uint8_t kalibrasi=3;



int number=0;



void conv_segmen(uint8_t digit)



{

switch (digit)

{



case 0 :

{

PORTB &= ~_BV(PB0) & ~_BV(PB1) & ~_BV(PB2) & ~_BV(PB3) & ~_BV(PB4) & ~_BV(PB5);

PORTB |= _BV(PB6) ;

break;

}

case 1 :

{

PORTB &= ~_BV(PB1) & ~_BV(PB2) ;

PORTB |= _BV(PB0) | _BV(PB3) | _BV(PB4) | _BV(PB5) | _BV(PB6) ;

break;

}

case 2 :

{

PORTB &= ~_BV(PB0) & ~_BV(PB1) & ~_BV(PB3) & ~_BV(PB4) & ~_BV(PB6) ;

PORTB |= _BV(PB2) | _BV(PB5) ;

break;

}

case 3 :

{

PORTB &= ~_BV(PB0) & ~_BV(PB1) & ~_BV(PB2) & ~_BV(PB3) & ~_BV(PB6) ;

PORTB |= _BV(PB4) | _BV(PB5) ;

break;

}

case 4 :

{

PORTB &= ~_BV(PB1) & ~_BV(PB2) & ~_BV(PB5) & ~_BV(PB6) ;

PORTB |= _BV(PB0) | _BV(PB3) | _BV(PB4) ;

break;

}

case 5 :

{

PORTB &= ~_BV(PB0) & ~_BV(PB2) & ~_BV(PB3) & ~_BV(PB5) & ~_BV(PB6) ;

PORTB |= _BV(PB1) | _BV(PB4) ;

break;

}

case 6 :

{

PORTB &= ~_BV(PB0) & ~_BV(PB2) & ~_BV(PB3) & ~_BV(PB4) & ~_BV(PB5) & ~_BV(PB6) ;

PORTB |= _BV(PB1) ;

break;

}

case 7 :

{

PORTB &= ~_BV(PB0) & ~_BV(PB1) & ~_BV(PB2) ;

PORTB |= _BV(PB3) | _BV(PB4) | _BV(PB5)| _BV(PB6) ;

break;

}

case 8 :

{

PORTB &= ~_BV(PB0) & ~_BV(PB1) & ~_BV(PB2) & ~_BV(PB3) & ~_BV(PB4) & ~_BV(PB5) & ~_BV(PB6);

break;

}

case 9 :

{

PORTB &= ~_BV(PB0) & ~_BV(PB1) & ~_BV(PB2) & ~_BV(PB3) & ~_BV(PB5) & ~_BV(PB6);

PORTB |= _BV(PB4) ;

break;

}

case 10 :

{

PORTB |= _BV(PB0) | _BV(PB1) | _BV(PB2) | _BV(PB3) | _BV(PB4) | _BV(PB5) | _BV(PB6) ;

break;

}

}

}







void init_ctr(void)

{







TCCR0A |= (1 << WGM01); // Configure timer 0 for CTC mode

TIMSK |= (1 << OCIE0A); // Enable CTC interrupt

OCR0A = 50; // Set CTC compare value till blink disapear at 1MHz AVR clock, with a prescaler of 64

TCCR0B |= (1 << CS01)|(1 << CS00); // Start timer at Fcpu/64





}





void init_ctr1(void)

{



TCCR1B |= (1 << WGM12); // Configure timer 1 for CTC mode

TIMSK |= (1 << OCIE1A); // Enable CTC interrupt

OCR1A = 586; //compare the CTC A = 600ms =586

TCCR1B |= ((1 << CS10) | (1 << CS12)); // Start timer at Fcpu/1024



}





ISR(TIMER1_COMPA_vect) //timer capture RPM count



{ uint16_t rpm;





switch(kalibrasi) {

case 1 :{

rpm=number/100;

break; }



case 2 :{

rpm=number/10;

break; }



case 3 :{

rpm=number;

break; }



case 4 :{

rpm=number*10;

break; }



case 5 :{

rpm=number*100;

break; }

default: rpm=0;

}



angka1 = rpm%10;



if(rpm>9) angka2 = ((rpm%100) - (rpm%10)) /10 ;

else angka2=10;



if(rpm>99) angka3 = ((rpm%1000) - (rpm%100)) /100 ;

else angka3=10;



if(rpm>999) angka4 = ((rpm%10000) - (rpm%1000)) /1000 ;

else angka4=10;





number=0;

}



ISR(TIMER0_COMPA_vect) // timer pindah kolom

{







segstep++;



switch(segstep) {

case 1 :{ conv_segmen(10);

PORTD |= _BV(PD0);

PORTD &= ~_BV(PD1) & ~_BV(PD4) & ~_BV(PD5) ;

conv_segmen(angka1);

break;

}



case 2 :{ conv_segmen(10);

PORTD |= _BV(PD1);

PORTD &= ~_BV(PD0) & ~_BV(PD4) & ~_BV(PD5) ;

conv_segmen(angka2);

break;

}

case 3 :{ conv_segmen(10);

PORTD |= _BV(PD4);

PORTD &= ~_BV(PD1) & ~_BV(PD0) & ~_BV(PD5) ;

conv_segmen(angka3);

break;

}

case 4 :{ conv_segmen(10);

PORTD |= _BV(PD5);

PORTD &= ~_BV(PD1) & ~_BV(PD4) & ~_BV(PD0) ;

conv_segmen(angka4);

segstep=0;

break;

}



}







}





SIGNAL (SIG_INT0)

{

number++;



}



SIGNAL (SIG_INT1)

{



cli();

conv_segmen(10);



_delay_ms(500);



kalibrasi++;



if (kalibrasi == 6) kalibrasi=1;



eeprom_write_byte((uint8_t*)10, kalibrasi);





sei();

}





void baca_eeprom(void)

{



kalibrasi = eeprom_read_byte((uint8_t*)10);



if(kalibrasi == 0xFF) kalibrasi=3;





}



int main(void)

{



GIMSK |= (1<<INT0)|(1<<INT1);

MCUCR |= (1<<ISC01)| (1<<ISC11); //fall edge



DDRD = _BV(PD0) | _BV(PD1) | _BV(PD4) | _BV(PD5) ; // seg select

DDRB = _BV(PB0) | _BV(PB1) | _BV(PB2) | _BV(PB3) | _BV(PB4) | _BV(PB5) | _BV(PB6) ; // seg a,b,c,d,e,f,g





init_ctr();

init_ctr1();

baca_eeprom();

sei();

while(1)



{





}





}