V3.2 connecting and disconnecting devices

[vascolp]

Hi!

In order to make my Remote Bla Bla software work, I need to be able to connect and disconnect motors to the Hub.
Everything was fine in v3.1, but in v3.2 it does not work.
The simple program below fails in the second call to m=Motor(Port.A) with an

 `OSError: [Errno 16] EBUSY: Device or resource busy`

Is there a way to fix this?

from pybricks.pupdevices import DCMotor, Motor, Remote
from pybricks.parameters import Port, Direction, Stop, Button, Color
from pybricks.tools import wait

print('Connect motor to port A')
wait(2000)
m=Motor(Port.A)
m.dc(50)
wait(2000)
m.dc(0)
print('disconnect motor')
wait(2000)
print('Connect motor to port A')
wait(2000)
m=Motor(Port.A)
m.dc(100)
wait(2000)
m.dc(0)
print('bye')
wait(2000)

Thanks in advance!
Vasco

[dlech]

Can you just remove the second m=Motor(Port.A)? The m.dc() command after that should fail if the motor is not connected.

[vascolp]

Yes Motor.close() or in fact any_device.close() should do the job!
But you don´t have that, do you? :-(

[dlech]

No, not currently.

[vascolp]

Is there a workaround for that? Or is the data at C level and I cannot do anything, even if "illegal"?
Because in previous versions it was possible to call Motor several times....

[dlech]

It's all at the C level, so the closest thing to a workaround is stopping the program and starting it again.

[vascolp]

Can I do that from code? I supose not, and this works connected to the remote, so I would have to ask the user to reconnect the remote... really not good....

[vascolp]

I have been trying to cope with this situation but it is impossible for my program. The whole ideia of Remote Bla Bla to be able to configure the devices I want to use by trial and error. That means configure, test, reconfigure. For that I need to connect and reconnect devices.

Can you please consider making a Motor/DCMotor.close() method as soon as possible? Beta is ok for me... Thank you!