Cannot connect to ROS device

Question

An Nguyen 2019-3-24

1
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/452056-cannot-connect-to-ros-device

评论： Alex Gunagwera 2020-11-10

In Ubuntu 16.04, I am building a PID controller model in Simulink and am trying to build and deploy it.

After roslaunching in a terminal which starts up all my other nodes (not built using Simulink), I'm trying to connect my Simulink node to my ROS device by using the IP addr outputted from ifconfig but am failing on this step.

It says that

Cannot connect to device. Check that the device address, username, and password are correct.

I have checked my address, username and password multiple times to ensure they are correct. Please see the photos below for details.

I have tried enabling SSH and disabling the firewall, to no avail.

Thank you!

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Sebastian Castro 2019-3-28

2
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/452056-cannot-connect-to-ros-device#answer_367802

Hi An,

Have you installed openssh-server on your Ubuntu machine? This is needed for the tests to succeed, far as I recall.

https://www.cyberciti.biz/faq/ubuntu-linux-install-openssh-server/

- Sebastian

3 个评论
显示 1更早的评论隐藏 1更早的评论

Alex Gunagwera 2020-11-10

编辑：Alex Gunagwera 2020-11-10

hello, is there a way to specify the port on to which ssh should connect? I know thats the issue because i changed the default port and if i personally try to ssh to the machine from the terminal, I successfully connnect. so it is not working on 22. However i could not find an option to specify this. In my case the error is connecting to the ssh server at the ip_address

Alex Gunagwera 2020-11-10