INDIGO

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


void prepare_system() {
    DDRB |= (1<<PB0);
    DDRC = 0xff;
}


void arm_move(int degree) {

    if (degree > 0) {
        for (int i = 0; i < degree; i++) {
            PORTC = 0x21;
            _delay_ms(4);
            PORTC = 0x20;
            _delay_ms(20);
        }
    } else if (degree < 0 ) {
        for (int i = 0; i < degree; i++) {
            PORTC = 0x10;
            _delay_ms(2);
            PORTC = 0x00;
            _delay_ms(2);
        }
    }

}


int main(void) {

    prepare_system();

    while (1) {
        PORTB ^= (1<<PB0);
        arm_move(60);
        _delay_ms(1000);
    }

}