Hardware configuration

Macros
#define	SSD1306_SCL   PB2
#define	SSD1306_SDA   PB0
#define	SSD1306_SA   0X3C

Detailed Description

Override these before including the header to change pin assignments or I2C address. Defaults target ATtiny85 with the standard OLED breakout wiring (SCL=PB2, SDA=PB0, address 0x3C).

Macro Definition Documentation

SSD1306_SA

#define SSD1306_SA   0X3C

7-bit I2C slave address. Default: 0x3C. Some modules use 0x3D.

SSD1306_SCL

#define SSD1306_SCL   PB2

I2C clock pin. Default: PB2 (ATtiny85 pin 7).

SSD1306_SDA

#define SSD1306_SDA   PB0

I2C data pin. Default: PB0 (ATtiny85 pin 5).