= SSD1306 Driver for ATTiny controllers =

SSD1306 I2C OLED Display driver is Arduino style library, intended for use with very small microcontrollers (with a little of SRAM). First of all, it was developed for ATTiny controllers to use as few resources as possible (in simple case it requires only 18 bytes of SRAM). Since ATTiny controllers have no division and multiply operations, the library has some limited functionaly, and uses shift operation to speed up calculations. But it is still can be used to develop simple graphics applications (please, refer to examples).

Key Features:

• Fast I2C implementation (ssd1306_i2c.h): for Attiny it has its own I2C implementation, for Atmega it uses Wire library.
• Low level I2C OLED Driver functions (ssd1306_interface.h)
• High level I2C OLED Driver functions (ssd1306.h)
• Memory-buffered operations (nano_gfx.h)
• Supported OLED displays:
  • SSD1306 128x64
  • SSD1306 128x32
• Third-party font (6x8)
• Some functions are:
  • Clearing display
  • Filling display with pattern data
  • Printing text to display
  • Drawing bitmap image from SRAM memory
  • Drawing bitmap image from Flash memory (PROGMEM related)
  • Sprites: moving
  • Drawing lines in buffer (vertical and horizontal)
• And bonus:
  • Arkanoid game as example!
  • Simple Lode runner game as example!

For Attiny85/Attiny45 controllers OLED display must be connected to PB3 (SCL) and PB4 (SDA) lines. For other controllers pins are defined by standard Wire library. The pins can be modified for Attiny in ssd1306_i2c_conf.h file.

Tested controllers:

• Attiny85, Attiny45
• Atmega328p, Atmega168

For more information about this library please visit https://github.com/lexus2k/ssd1306. Doxygen documentation can be found at github.io site. If you found any problem, or have any idea, please report to Issues section.

== License ==

Copyright (C) 2016-2017 Alexey Dynda

This file is part of SSD1306 Library.

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.