The i2c interface

i2c provides access to a specific I2C controller. This interface is restricted because it provides privileged access to hardware devices.

Auto-Connect: no Attributes:

  • path (slot): path to i2c device node e.g. /dev/i2c-0

Hardware IO interfaces covers some general considerations common to these kinds of devices.

To use a i2c device, the snap developer must add plugs: [ i2c ] to a snap’s snapcraft.yaml. The snap user can then access a specific i2c device with an interface connection.

Use snap interface i2c to see which i2c devices are available on the system:

$ snap interface i2c 
name:    i2c
summary: allows access to specific I2C controller
  - pi:i2c-0
  - pi:i2c-1
  - pi:i2c-2

Once connected, the consuming snap can use the device via the path specified by the connected slot.

This is a snap interface. See Interface management and Supported interfaces for further details on how interfaces are used.

Last updated 10 months ago.