Interface a low-cost graphics display to uLisp

#1

I’ve written an application to interface a low-cost I2C 128x64 OLED display to an Arduino board with graphics routines written in uLisp.

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It supports I2C OLED display modules based on the SH1106 driver chip, available from a number of Chinese suppliers at a few dollars; for example, the Geekcreit 1.3" I2C OLED display, available from Banggood.

It provides the following commands:

(init-display) - initialises the display.
(moveto x y) - moves the drawing position to (x, y).
(drawto x y) - draws a line from the drawing position to (x, y).
(point x y) - plots a point at (x, y).
(clear) - clears the display.

I’ve also included a simple Turtle Graphics application that draws a Dragon Curve, to put the display through its paces!

For more details see Graphics display interface in Lisp.

#2

I have just tried this out on my MKR Zero - was wondering if you have displayed characters with lisp.

#3

No, but you could implement the character-display routine from my Tiny Graphics Library project:

Tiny Graphics Library

The character data would be a lot to store in uLisp, but you could put it in flash and write an extension to uLisp to read it out.