[Raspberry Pi][Arduino] Raspberry pi connect to arduino by using I2C

The architecture about How to connect between Raspberry pi and Arduino.



How to write code and load binary file into arduino
[arduino] Starting arduino

Download following arduino code and compile it.
Arduino Source Code

Download following arduino code and compile it.
Raspberry Pi Source Code

gcc main.c -o main
./main 1

pi@raspberrypi ~/test $ ./a.out 1
I2C: Connecting
I2C: acquiring buss to 0x4
Sending 1
Received 1

Reference:

1. Arduino 1.0.6
2. Raspberry Pi and Arduino Connected Using I2C
3. Connecting an Arduino to a Raspberry PI using I2C
4. Connect Raspberry Pi to Arduino with I2C Interface
5. I2C communication between a RPI and a Arduino
6. DS1621 with Raspberry Pi/ArchLinuxARM
7. Control your light at home with a Raspberry Pi and Olimex’s MOD-IO2