Using a Device

First, as before, make sure the class you want to use a device in derives from either OpMode or Subassembly. Then, add a public member with the @Device attribute, like so:

@Device
public DeviceClass deviceName;

(replacing DeviceClass with the com.qualcomm.robotcore.hardware device class, e.g. DcMotor. and deviceName with the name of the device in the robot controller configuration) \ And it will be automatically loaded from the hardwareMap when your opmode is initialized.