egaistek

#define F_CPU 1000000UL // 1 MHz

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

// segment A1 connected to port D, bit 2 (PD2)
#define SEG_A1_ON PORTD &= ~(1 << 2)
#define SEG_A1_OFF PORTD |= (1 << 2)

#define SEG_A2_ON PORTD &= ~(1 << 3)
#define SEG_A2_OFF PORTD |= (1 << 3)

#define SEG_B_ON PORTD &= ~(1 << 4)
#define SEG_B_OFF PORTD |= (1 << 4)

#define SEG_C_ON PORTD &= ~(1 << 5)
#define SEG_C_OFF PORTD |= (1 << 5)

#define SEG_D1_ON PORTD &= ~(1 << 7)
#define SEG_D1_OFF PORTD |= (1 << 7)

#define SEG_D2_ON PORTD &= ~(1 << 6)
#define SEG_D2_OFF PORTD |= (1 << 6)

#define SEG_E_ON PORTB &= ~(1 << 0)
#define SEG_E_OFF PORTB |= (1 << 0)

#define SEG_F_ON PORTB &= ~(1 << 1)
#define SEG_F_OFF PORTB |= (1 << 1)

#define SEG_G1_ON PORTB &= ~(1 << 2)
#define SEG_G1_OFF PORTB |= (1 << 2)

#define SEG_G2_ON PORTB &= ~(1 << 3)
#define SEG_G2_OFF PORTB |= (1 << 3)

#define SEG_H_ON PORTB &= ~(1 << 4)
#define SEG_H_OFF PORTB |= (1 << 4)

#define SEG_J_ON PORTD &= ~(1 << 5)
#define SEG_J_OFF PORTD |= (1 << 5)

#define SEG_K_ON PORTC &= ~(1 << 0)
#define SEG_K_OFF PORTC |= (1 << 0)

#define SEG_L_ON PORTC &= ~(1 << 1)
#define SEG_L_OFF PORTC |= (1 << 1)

#define SEG_M_ON PORTC &= ~(1 << 2)
#define SEG_M_OFF PORTC |= (1 << 2)

#define SEG_N_ON PORTC &= ~(1 << 3)
#define SEG_N_OFF PORTC |= (1 << 3)

#define SEG_DP_ON PORTC &= ~(1 << 4)
#define SEG_DP_OFF PORTC |= (1 << 4)

void delay_ms(int count)
{
    _delay_ms(count);
}

void ioinit()
{
    DDRB = 0b11111111;
    DDRC = 0b11111111;
    DDRD = 0b11111110;

    PORTB = 0xff;
    PORTC = 0xff;
    PORTD = 0xff;
}

int main()
{
    ioinit();

    while(1) {

        #define BLINK 500

    SEG_A1_ON; delay_ms(BLINK);
    SEG_A1_OFF;

    SEG_A2_ON; delay_ms(BLINK);
    SEG_A2_OFF;

    SEG_B_ON; delay_ms(BLINK);
    SEG_B_OFF;

    SEG_C_ON; delay_ms(BLINK);
    SEG_C_OFF;

    SEG_D2_ON; delay_ms(BLINK);
    SEG_D2_OFF;

    SEG_D1_ON; delay_ms(BLINK);
    SEG_D1_OFF;

    SEG_E_ON; delay_ms(BLINK);
    SEG_E_OFF;

    SEG_F_ON; delay_ms(BLINK);
    SEG_F_OFF;

    }
}