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Detailed information are described in [Datasheet SSD1306](https://cdn-shop.adafruit.com/datasheets/SSD1306.pdf).
## Library
C library is aimed for driving [SSD1306 0.96" OLED display](#demonstration) 128x64 through TWI's Atmega16.
C library is aimed for driving [SSD1306 0.96" OLED display](#demonstration) 128x64 through TWI's Atmega328p.
### Versions
- 1.0 - basic functions.
- 2.0 - change whole logic -> rebuild to cacheMemLcd array. It means that every request is stored in cache array and then is depicted on the display by function [SSD1306_DrawString (char*)](#ssd1306_drawstring). Added [SSD1306_DrawLine (uint8_t, uint8_t, uint8_t, uint8_t)](#ssd1306_drawline) function.
- 2.0 - change whole logic -> rebuild to cacheMemLcd array. It means that every request is stored in cache array and then is depicted on the display by function [SSD1306_UpdateScreen (uint8_t)](#ssd1306_updatescreen). Added new function -> [SSD1306_DrawLine (uint8_t, uint8_t, uint8_t, uint8_t)](#ssd1306_drawline).
## Dependencies
- [font.c](https://github.com/Matiasus/SSD1306/blob/readme-edits/lib/font.c)
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Font.c can be modified according to application requirements with form defined in font.c. Maximal permissible horizontal dimension is 8 bits.
### Usage
Prior defined for MCU Atmega16 / Atmega8. Need to be carefull with TWI ports definition.
Prior defined for MCU Atmega328p / Atmega8 / Atmega16. Need to be carefull with TWI ports definition.
| PORT | [Atmega16](http://ww1.microchip.com/downloads/en/devicedoc/doc2466.pdf) | [Atmega8](https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-2486-8-bit-AVR-microcontroller-ATmega8_L_datasheet.pdf) |
| PORT | [Atmega16](http://ww1.microchip.com/downloads/en/devicedoc/doc2466.pdf) | [Atmega8](https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-2486-8-bit-AVR-microcontroller-ATmega8_L_datasheet.pdf) / [Atmega328](https://ww1.microchip.com/downloads/en/DeviceDoc/ATmega48A-PA-88A-PA-168A-PA-328-P-DS-DS40002061B.pdf) |
| :---: | :---: | :---: |
| SCL | PC0 | PC5 |
| SDA | PC1 | PC4 |
### Tested
Library was tested and proved on a **_SSD1306 0.96″ OLED Dispay_** with **_Atmega16_**.
Library was tested and proved on a **_SSD1306 0.96″ OLED Dispay_** with **_Atmega328p_**.
## Init OLED Sequence
Init sequence OLED display was defined according to page 64 (next to last page) of [Datasheet SSD1306](https://cdn-shop.adafruit.com/datasheets/SSD1306.pdf).