New version of Kitt leds.

Here is the alternate version of the light show resembling Kitt front end demo.

First you need to compile lptout.c
$ gcc lptout.c -o lptout

Create the lightshow.sh shell file

$ editor lightshow.sh

Make it executable with:

$ chmod +x lightshow.sh

then you can invoke shell file with with an argument for the speed of the lights. The larger the number, the slower it runs,

$ sudo /lightshow.sh .2

You can also use the light show emulator

$ ./testshow  .5

 ------------------------------------------------------------
lptout.c
[code]
/*
 * Simple parallel port output control program for Linux
 * Written and copyright by Tomi Engdahl 1998
 * (e-mail: tomi.engdahl@hut.fi)
 *
 * The program output the data value to PC parallel port data pins
 * (default lpt1 I/O address 0x378). The data values are given as the
 * command line parameter to the program. The number can be
 * in decimal (0..255) or hexadecimal format (0x00..0xFF).
 *
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <asm/io.h>

#define base 0x378           /* printer port base address */

main(int argc, char **argv)
{                   
  int value;

  if (argc!=2)
    fprintf(stderr, "Error: Wrong number of arguments. This program needs one argument which is number between 0 and 255.\n"), exit(1);
  if (sscanf(argv[1],"%i",&value)!=1)
    fprintf(stderr, "Error: Parameter is not a number.\n"), exit(1);
  if ((value<0) || (value>255))
    fprintf(stderr, "Error: Invalid numeric value. The parameter number must be between 0 and 255\n"), exit(1);
  if (ioperm(base,1,1))
    fprintf(stderr, "Error: Couldn't get the port at %x\n", base), exit(1);

  outb((unsigned char)value, base);
}                                           
[/code]


lightshow.sh
[code]
#!/bin/bash

let x="$((2#11111111))"
    lptout  $x
   sleep $1
let x="$((2#00000000))"
    lptout $x
   sleep $1


echo "infinite loops [ hit CTRL+C to stop]"
for (( ; ; ))
do
let x="$((2#10000000))"
    lptout $x
   sleep $1

let x="$((2#11000000))"
    lptout $x
   sleep $1
let x="$((2#01100000))"
    lptout $x
   sleep $1
let x="$((2#00011000))"
    lptout $x
   sleep $1
let x="$((2#00001100))"
    lptout  $x
   sleep $1
let x="$((2#00000110))"
    lptout  $x
   sleep $1
let x="$((2#00000011))"
    lptout $x
   sleep $1
let x="$((2#00000001))"
    lptout  $x
   sleep $1
let x="$((2#00000000))"
    lptout  $x
   sleep $1
let x="$((2#00000001))"
    lptout  $x
   sleep $1
let x="$((2#00000011))"
    lptout  $x
   sleep $1
let x="$((2#00000110))"
    lptout  $x
   sleep $1
let x="$((2#00001100))"
    lptout  $x
   sleep $1
let x="$((2#00011000))"
    lptout  $x
   sleep $1
let x="$((2#00110000))"
    lptout  $x
   sleep $1
let x="$((2#01100000))"
    lptout  $x
   sleep $1
let x="$((2#11000000))"
    lptout  $x
   sleep $1
let x="$((2#10000000))"
    lptout  $x
   sleep $1
let x="$((2#00000000))"
    lptout  $x
   sleep $1
done

let x="$((2#11111111))"
    lptout  $x
   sleep $1

let x="$((2#00000000))"
    lptout $x
   sleep $1
[/code]

testshow.sh
[code]
#!/bin/bash
clear
tput cup 1  1; echo "11111111"
sleep $1
tput cup 1  1; echo "00000000"
sleep $1

 echo "infinite loops [ hit CTRL+C to stop]"
for (( ; ; ))
do
tput cup 1  1; echo "10000000"
sleep $1

tput cup 1  1; echo "11000000"
sleep $1

tput cup 1  1; echo "01100000"
sleep $1

tput cup 1  1; echo "00011000"
sleep $1

tput cup 1  1; echo "00001100"
sleep $1

tput cup 1  1; echo "00000110"
sleep $1

tput cup 1  1; echo "00000011"
sleep $1

tput cup 1  1; echo "00000001"
sleep $1

tput cup 1  1; echo "00000000"
sleep $1

tput cup 1  1; echo "00000001"
sleep $1

tput cup 1  1; echo "00000011"
sleep $1

tput cup 1  1; echo "00000110"
sleep $1

tput cup 1  1; echo "00001100"
sleep $1

tput cup 1  1; echo "00011000"
sleep $1

tput cup 1  1; echo "00110000"
sleep $1

tput cup 1  1; echo "01100000"
sleep $1

tput cup 1  1; echo "11000000"
sleep $1

tput cup 1  1; echo "10000000"
sleep $1

tput cup 1  1; echo "00000000"
sleep $1

done

tput cup 1  1; echo "11111111"
sleep $1

tput cup 1  1; echo "00000000"
sleep $1
[/code]