Equivalent of motor::running from earlier versions about ev3dev-lang HOT 6 CLOSED

There is a state attribute, which returns a set of strings representing current motor state. So motor.state().count("running") should work as a test.

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Also see the new tutorial here: http://www.ev3dev.org/docs/tutorials/tacho-motors/

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Thanks, those docs are exactly what I needed.

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@dsharlet, I had your ball catching robot in mind when I added the run-direct command. I'd be interested to know if you are able to make it work with other commands or if you have to use the run-direct command with your own PID as you did before.

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Thanks for that, I was pretty happy to see run-direct in the docs! I will also try to rebuild my motor class without using my own control loop and see how far I get, I'll let you know if I can make it work. It would be great to get rid of my custom servo class.

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@dlech, I've spent some time now updating my code. Everything seems to be working again, though I'm still using a custom controller with run_direct. I haven't been able to meet my requirements with the stock controller/API.

Here's a video that demonstrates what I'm trying to do (track a position with minimal delay): https://www.youtube.com/watch?v=vxx3bBVWaxg The video is old, but the behavior is the same today.

Here's the program used to generate that video (updated to latest ev3dev): https://github.com/dsharlet/ev3cv/blob/master/src/test/servo.cpp

I tried moving the call to "run_to_abs_pos" to outside the control loop, but the motor just stops as soon as it reaches the position setpoint and does not run again. I don't see an obvious candidate for another run command to use instead.

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