void scrollMessage( char *str )
{
    char message[] = "123456789121345678";
    uint8_t leng = strlen(message);

    for ( int8_t i = 0 ; i < leng + 4 ; i++ )
    {
        if ( i > leng )
        {
            disp.dig[0] = 11;
            disp.dig[1] = 11;
            disp.dig[2] = 11;
            disp.dig[3] = 11;
        }
        else
        {
            disp.dig[0] = message[ 0 + i ] - '0';
            disp.dig[1] = message[ 1 + i ] - '0';
            disp.dig[2] = message[ 2 + i ] - '0';
            disp.dig[3] = message[ 3 + i ] - '0';
        }

        _delay_ms(250);
    }
}