/* 
# vim: ai ts=4 sts=4 et sw=4 
*/ 

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

void delay_ms(unsigned int ms)
    /* Delay for a min of <ms> */
{
    while (ms) {
        _delay_ms(0.96); 
        ms--;
    }
}

void lightshow_2()
{
    for (int i = 5; i > 1; i--)
    {
        // Turn Pin 7, 5, 3 on. 
        PORTB |= (_BV(PB3));
        PORTB |= (_BV(PB5)); 
        PORTB |= (_BV(PB7)); 

        // delay_ms(100);
        
        // Turn 7,5,3 off.
        PORTB &= ~(_BV(PB3)); 
        PORTB &= ~(_BV(PB5)); 
        PORTB &= ~(_BV(PB7)); 
        // Turn 4,6 on
        PORTB |= (_BV(PB4));
        PORTB |= (_BV(PB6));

        // delay_ms(100);
        
        // Pins 4,6 off
        PORTB &= ~(_BV(PB6));
        PORTB &= ~(_BV(PB4));
    }
    // Clear pins
    PORTB = 0x00; 
}




int main(void)
{
    /* INITIALIZE */
    /* Enabled PORTB as output */
    DDRB = 1;

    lightshow_1(); 
    
    sleep_mode(); 
    return(0);
}