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timer_test.c
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timer_test.c
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#include <avr/io.h>
#include <avr/interrupt.h>
volatile uint8_t counter = 0;
void satu (uint8_t prt)
{
if (prt == 1)
PORTA = 0x06;
else if (prt == 2)
PORTB = 0x06;
else if (prt == 3)
PORTC = 0x06;
else if (prt == 4)
PORTD = 0x06;
}
void dua (uint8_t prt)
{
if (prt == 1)
PORTA = 0x5B;
else if (prt == 2)
PORTB = 0x5B;
else if (prt == 3)
PORTC = 0x5B;
else if (prt == 4)
PORTD = 0x5B;
}
void tiga (uint8_t prt)
{
if (prt == 1)
PORTA = 0x4F;
else if (prt == 2)
PORTB = 0x4F;
else if (prt == 3)
PORTC = 0x4F;
else if (prt == 4)
PORTD = 0x4F;
}
void empat (uint8_t prt)
{
if (prt == 1)
PORTA = 0x66;
else if (prt == 2)
PORTB = 0x66;
else if (prt == 3)
PORTC = 0x66;
else if (prt == 4)
PORTD = 0x66;
}
void lima (uint8_t prt)
{
if (prt == 1)
PORTA = 0x6D;
else if (prt == 2)
PORTB = 0x6D;
else if (prt == 3)
PORTC = 0x6D;
else if (prt == 4)
PORTD = 0x6D;
}
void enam (uint8_t prt)
{
if (prt == 1)
PORTA = 0x7D;
else if (prt == 2)
PORTB = 0x7D;
else if (prt == 3)
PORTC = 0x7D;
else if (prt == 4)
PORTD = 0x7D;
}
void tujuh (uint8_t prt)
{
if (prt == 1)
PORTA = 0x07;
else if (prt == 2)
PORTB = 0x07;
else if (prt == 3)
PORTC = 0x07;
else if (prt == 4)
PORTD = 0x07;
}
void delapan (uint8_t prt)
{
if (prt == 1)
PORTA = 0x7F;
else if (prt == 2)
PORTB = 0x7F;
else if (prt == 3)
PORTC = 0x7F;
else if (prt == 4)
PORTD = 0x7F;
}
void sembilan (uint8_t prt)
{
if (prt == 1)
PORTA = 0x6F;
else if (prt == 2)
PORTB = 0x6F;
else if (prt == 3)
PORTC = 0x6F;
else if (prt == 4)
PORTD = 0x6F;
}
void nol (uint8_t prt)
{
if (prt == 1)
PORTA = 0x3F;
else if (prt == 2)
PORTB = 0x3F;
else if (prt == 3)
PORTC = 0x3F;
else if (prt == 4)
PORTD = 0x3F;
}
void init_timer1 ()
{
// Timer Mode 4: Clear Timer on Compare match (CTC)
TCCR1B |= (1<<WGM12);
// Initialize Timer staring value
TCNT1 = 0;
// Set Compare value for 1s overflow
OCR1A = 15625;
// Enable Timer Compare A Match interrupt
TIMSK |= (1<<OCIE1A);
// Start Timer & Clock Select: Prescale I/O clock by 64
TCCR1B |= (1<<CS10);
TCCR1B |= (1<<CS11);
}
ISR (TIMER1_COMPA_vect)
{
counter++;
if (counter > 9)
counter = 0;
if (counter == 0)
nol(4);
else if (counter == 1)
satu(4);
else if (counter == 2)
dua(4);
else if (counter == 3)
tiga(4);
else if (counter == 4)
empat(4);
else if (counter == 5)
lima(4);
else if (counter == 6)
enam(4);
else if (counter == 7)
tujuh(4);
else if (counter == 8)
delapan(4);
else if (counter == 9)
sembilan(4);
else if (counter == 0)
nol(4);
}
int main (void)
{
DDRD = 0xFF;
init_timer1(); // init Timer1
sei(); // enable global interrupts
while (1) {
}
return 1;
}