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 | 1 | initial version |
1) You need to start up your node by running "rosrun your_package your_node" or an equivalent roslaunch command. I assume you're doing that and that the code you quoted is not complete.
2) If your node lives in its own namespace "my_node_ns", then it would try to subscribe to "/my_node_ns/led/start". Make sure to publish to the right topic.
3) Debug by:
- adding ROS_INFO("test"); or similar in your functions so you know they are being called.
- Using rostopic list /led/start --verbose to check if your node is subscribing correctly to the topic.
- Checking your serial ports and USB connection. It seems like a problem with your Arduino connection, not the ROS side.
| | 2 | No.2 Revision |
1) You need to start up your node by running "rosrun your_package your_node" or an equivalent roslaunch command. I assume you're doing that and that the code you quoted is not complete.
2) If your node lives in its own namespace "my_node_ns", then it would try to subscribe to "/my_node_ns/led/start". Make sure to publish to the right topic.
3) Debug by:
by:
- adding ROS_INFO("test"); or similar in your functions so you know they are being called.
- Using rostopic list /led/start --verbose to check if your node is subscribing correctly to the topic.
- Checking your serial ports and USB connection. It seems like a problem with your Arduino connection, not the ROS side.
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