Closed iKuba closed 4 years ago
Make sure the host is resolvable from the android device. Try defining the ROS_IP
and ROS_HOSTNAME
as explained here
This might be a silly question.. but how would I set the ROS_IP on the android device?
You need to set it on your host computer. Per the link I sent you:
When a ROS node advertises a topic, it provides a hostname:port combination (a URI) that other nodes will contact when they want to subscribe to that topic. It is important that the hostname that a node provides can be used by all other nodes to contact it.
If you want to subscribe to a topic your host computer is advertising, you need to make sure that the address that node is advertising is resolvable by the device that wants to subscribe.
Cool that worked thanks! Thought I was already setting it...
On Tue, Mar 10, 2020 at 5:27 AM Ernesto Corbellini notifications@github.com wrote:
You need to set it on your host computer. Per the link I sent you:
When a ROS node advertises a topic, it provides a hostname:port combination (a URI) that other nodes will contact when they want to subscribe to that topic. It is important that the hostname that a node provides can be used by all other nodes to contact it.
If you want to subscribe to a topic your host computer is advertising, you need to make sure that the address that node is advertising is resolvable by the device that wants to subscribe.
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Hello,
I am trying to send a command via rostopic pub from my linux machine to an android device. The device is connected via USB. I am able to rostopic echo several topics being published from the device but the converse doesn't seem to hold true...
This is using rosjava + ROS Kinetic. I am 95% confident that the callback isn't being executed on the android device because I am not seeing any logs from the callback. I also know that the callback is being registered.