Keith Mitchell / Hexidraw

Library for drawing on the Hexiwear's OLED - more features being actively worked on

Dependents:   Hexidraw_Demo Hexiwear-FinalProject_v2

Using the library

Table of Contents

  1. Initial Notes
  2. How to use
  3. Using colors

Initial Notes

You don't need to define any pins to use the library, the pins are already defined for you with the Hexiwear defaults.

The draw speed isn't very fast, so you can see the display drawing the graphics pixels by pixel, which either makes a cool effect (like expending circles) or looks sloppy.

How to use

Include the header file:

#include "hexidraw.h"

Create a new instance of the OLED class:

OLED oled;

And then setup the display, and turn it on: 

oled.begin();
oled.wake();
oled.clear(WHITE);

You can also use sleep() to turn put the display into sleep mode (turns it off), and then just call wake() again to turn it back on.

Now you can call any of the functions such as rect(x, y, width, height, color), or circle (x, y, radius, color, width=1).

Using colors

You can use the function Color565(r,g,b) which was ported from the Adafruit GFX library to convert 0-255 colors into the 16-bit integers you need for passing to the OLED, e.g:

oled.circle(OLED_WIDTH/2, OLED_HEIGHT/2, 25, Color565(0,255,0));
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