Please fill this template for more accurate and prompt support.
Which DYNAMIXEL SDK version do you use?
3.7.42
Which programming language/tool do you use?
Python`
Which operating system do you use?
Ubuntu 20.04`
Which USB serial converter do you use?
U2D2
Which DYNAMIXEL do you use?
XM430-W250
Have you searched the issue from the closed issue threads?
Yes
Please describe the issue in detail
When I use ROS to send the motor position to the motor, I got error: File "/opt/ros/noetic/lib/python3/dist-packages/dynamixel_sdk/protocol2_packet_handler.py", line 213, in txPacket
if port.is_using:
AttributeError: 'NoneType' object has no attribute 'is_using'
ISSUE TEMPLATE ver. 1.2.0
Please fill this template for more accurate and prompt support.
Which DYNAMIXEL SDK version do you use? 3.7.42
Which programming language/tool do you use? Python`
Which operating system do you use? Ubuntu 20.04`
Which USB serial converter do you use? U2D2
Which DYNAMIXEL do you use? XM430-W250
Have you searched the issue from the closed issue threads? Yes
Please describe the issue in detail When I use ROS to send the motor position to the motor, I got error: File "/opt/ros/noetic/lib/python3/dist-packages/dynamixel_sdk/protocol2_packet_handler.py", line 213, in txPacket if port.is_using: AttributeError: 'NoneType' object has no attribute 'is_using'
How can we reproduce the issue?