Using Move hub with LWP3Device?

[doowttam]

I'm trying to run a program on the Move hub to do hub-to-hub communication which is listed in the guide as supported: https://pybricks.com/learn/getting-started/what-do-you-need/#choosing-a-lego-hub

But, if I import the class I get an immediate import error.

from pybricks.hubs import MoveHub
from pybricks.pupdevices import Motor, ColorDistanceSensor
from pybricks.parameters import Button, Color, Direction, Port, Side, Stop
from pybricks.robotics import DriveBase
from pybricks.tools import wait, StopWatch

print('Start')

hub = MoveHub()
hub.light.on(Color.YELLOW)
wait(3000)

from pybricks.iodevices import LWP3Device

hub.light.on(Color.GREEN)
wait(3000)

print('Done')

Outputs:

Start
Traceback (most recent call last):
  File "train_control.py", in <module>
ImportError: 

The program fails at the same spot (stops running after yellow light) if I disconnect it from the computer and run it by pushing the button on the hub.

What am I doing wrong? Thanks in advance.

[dlech]

The pybricks.iodevices is not enabled on the BOOST Move hub due to limited flash memory on that hub.

The hub to hub communication mentioned in the docs is https://docs.pybricks.com/en/stable/hubs/movehub.html#bluetooth-examples, which is different from LWP3Device.

[doowttam]

I see. Thanks!