I am using ATmega8 with 12MHz crystal, on my breadboard. I can use SDA and SCL pins with default arduino library wire.h, and it works. Tool Keygen. But I want another pins to use. Using TWI (Two Wire Interface) / I2C Interface of AVR ATmega32 Microcontroller. Tutorial covers circuit diagram, source code in C and working video.

AVR-GCC Libraries Main. SDA port and pin definitions and eventually the delay routine in the module i2cmaster.S to your target when using the software I2C. Jan 08, 2012 Programming AVR I2C Interface. With software written in AVR C and a nifty little GUI programming application which eases the hassle.

18.06.11 #10 Comment by firstoption. Good day sir, thank you for this wonderful tutorial.this is what i called i2c made easy.your style of teaching is great,thank you for sharing your knowledge with confused students like me. Sir,i have a question with respect to bit masking,why did you mask dev_id before copying to TWDR TWDR = (dev_id & 0xF0) ((dev_addr.