Wecome to uLisp!

Welcome to your personal Lisp Machine! This is a 32-bit computer with limited memory and little permanent storage.

It's running a bespoke version of uLisp that contains special functions for operating the (very bright) LEDs.

It runs a subset of Common Lisp, take a look at getting started and the language reference

Connecting

To connect to it:

on Android use Serial USB Terminal
via Arduino Stuido
Linux: stty -F /dev/ttyACM0 9600 raw -clocal -echo icrnl ; screen /dev/ttyACM0 9600

When connected you should see

enter ~ to use LISP
enter ~ to use LISP
enter ~ to use LISP

You now have a full REPL!

2329> (+ 1 1 40)
42

2329>

The Lights

Each light is set by three 8-bit concatenated numbers (red, green, blue). Seding these directly to disp will set all the lights to that RGB color:

(disp 127 0 0) ; red 50%
(disp 0 255 0) ; green 100%
(disp 0 0 127) ; blue 50%
(disp 64 0 32) ; purple
(disp 255 255 255) ; blinding

The convenience function disp is overloaded, sending disp four numbers independently operates each light, use make-color to set them to different RGB colors:

(disp 
  (make-color 4 0 0)
  (make-color 0 4 0) 
  (make-color 0 0 4)
  (make-color 2 0 1))

And disp-off or just (disp) turns all lights off

Personalize this at home!

The 'animate' function utilizes the global variable 'animate-colors'. Set 'animate colors' to a list of 4 colors to cycle through:

(defvar animate-colors 
  (list (make-color 4 0 0) ; red
        (make-color 2 0 0) ; less red
        (make-color 0 0 0) ; off
        (make-color 0 0 0))) 
(animate)

Set user to whatever you like

(defvar user "Sexy Beast")
(animate)

Save all your changes and specify the startup function!

(save-image 'animate)

Hardware-Specific Functions

Use millis to get the milliseconds since startup and delay to pause

Code

Unorganized code can be found here on github