Using NXT Motor as Rotation Sensor

[traisen]

Hi,
Is there a Lejos class that uses NXT Motor as a rotation sensor? I havn't found one and as an exercise trying to add one.
NXT-G has it react based on angle test like > 45 degrees then returns true.

I am using an EncoderPort and setting motor power to 0 and coast.

But I am not sure about the listener part... especially how to know when the motor has started /stopped moving (because a user has turned it). Looks like it should be an interrupt, but not sure how to set this up.

Thanks for any hints

[traisen]

Just found ListenerCaller and using SensorPort as my example for callListeners.
The "rotation sensor" is on motor port so .. studying code.

Still curious if something is already there.
(And if I'm on the right track.) Thanks