ODroid C2 Ubuntu I2C Setup

How to set up I2C support on an ODROID-C2 from Hardkernel running Ubuntu 20.04. All commands are entered in a terminal window or via SSH.

Step 1: You need to update your Odroid C2 to ensure all the latest packages are installed:

sudo apt-get update
sudo apt-get upgrade
sudo apt-get dist-upgrade

Step 2: Next, reboot the Odroid C2:

sudo reboot

Step 3: Once you have logged into your Odroid C2 from the command line, run the following command to install python-smbus and i2c-tools:

sudo apt-get install python3-smbus i2c-tools

Step 4: Set the Odroid C2 to load the i2c driver:

modprobe aml_i2c

Step 5: Set the Odroid C2 to start I2C automatically at boot by editing /etc/modules :

sudo nano /etc/modules

Use your cursor keys to move to the last line and add the following:

aml_i2c

Save your changes and exit the nano editor.

Step 6: To avoid having to run the I2C tools at root, add the ‘odroid’ user to the I2C group:

sudo adduser odroid i2c

Step 7: Next, reboot the Odroid C2:

sudo reboot

When your Odroid C2 has rebooted, you will now have I2C support.

You can check for connected I2C devices with the following command:

i2cdetect -y -r 1