Enabling I2C module automatically

Question

I've tried to enable I2C communication but when I go into raspi-config there isn't an option to load the I2C module automatically. How can I enable automatic loading?

Answer 1

With recent kernels you should be using device tree.

Edit /boot/config.txt (requires sudo privileges) and add the following line.

dtparam=i2c_arm=on

Edit /etc/modules (requires sudo privileges) and add the following line.

i2c-dev

Then reboot.

Answer 2

There is a submenu Interfacing Options in raspi-config to enable I²C.

Depending on exactly what you are interfacing and what you want to do there are MANY options in Device Tree.