Unable to subscribe about ros_navigation_command_app

[HaranGopal]

Ah ok, I'll see if I can provide logs/configs if I can. Thanks for the help!

[Rongix]

Hey, as far as I remember you need to initialize connection from the main page using refresh like button.

In the settings for master you should enter ip like: http://XXX.XXX.X.XX:XXXXX/

For the device:
XXX.XXX.X.XX

All map topics without leading/ trailing slashes ('/')

All the code that manages ros is in lib/providers/RosProvider
Please check if it is configured correctly

[HaranGopal]

We initialize it to the ROSCORE IP right? and there isn't a need for ROSBRIDGE or the http-server correct?

[Rongix]

Yep, you enter ip of the device that runs roscore.
2nd ip address you have to provide is the ip of your android phone/ tablet that runs the app (Not the ip of the device being controlled). It might be a bit confusing.
Also this app can't be run on Android/ iOS simulator.

[HaranGopal]

I have set the IP of the android device, I'm able to publish data, and can verify that the node is connected and is subscribing on RQT, however, I'm unable to receive any data. Do you think it can be some version issue? (I have also disabled all firewalls on the router)

[Rongix]

It was made & tested on ROS Melodic with Ubuntu 18.04 (+ turtlebot3). Recently I'm working on a new project and don't have access to Ubuntu system to help you.

One thing to check out, when you configure ROS core / robot don't use localhost / loopback in it, but full address (with numbers) just how it is visible from the router.

It's hard to tell what may be wrong. If you provide some logs/ configs I might help.

[Anirudh181001]

Hi, I am facing the same issue. May I ask if this is resolved?