rezenders's profile - activity

Thanks for the reply. I will try to do that as well. I also opened an issue in GitHub about this: https://github.com/ros

any updates on this? I am getting the same error when running tests.

any updates?

Hello,

I have a node where I want to call an action with send_async_goal from within a service callback. I implemented it as shown below. It works, but only one time. When I call the service /task/request from the cmd line it returns the right result without a problem. But when I call the service a second time it does nothing, the service returns but the callback is not excuted.

I was trying to do something similar earlier but calling a service (async) inside another service, it was also working only one time, but in this situation the service was hanging instead of returning. I had to change the service call to be sync for it to work.

Any ideas?

class TaskBridge(Node):
    ...
    client_cb_group = MutuallyExclusiveCallbackGroup()
    self.mros_action_client = ActionClient(
        self, ControlQos, '/mros/objective',
        callback_group=client_cb_group)

    task_cb_group = MutuallyExclusiveCallbackGroup()
    self.task_request_service = self.create_service(
        Task,
        'task/request',
        self.task_request_cb,
        callback_group=task_cb_group
    )

   def task_request_cb(self, req, res):
       ...
       future = self.mros_action_client.send_goal_async(goal_msg, feedback_callback=self.feedback_callback)
       while rclpy.spin_until_future_complete(self, future, timeout_sec=1.0):
           self.get_logger().info("Waiting for future to complete")
       return future.result().accepted

def main():
    rclpy.init(args=sys.argv)

    task_bridge_node = TaskBridge()

    executor = MultiThreadedExecutor()
    rclpy.spin(task_bridge_node, executor=executor)

    task_bridge_node.destroy_node()
    rclpy.shutdown()

Changed: while rclpy.spin_until_future_complete(self, future, timeout_sec=1.0): To: while self.executor.spin_until

[Humble] Service call does nothing after second call when calling a goal from the callback Hello, I have a node where I

Any updates on this?

I am also interested in this, did you find anything?

I just started learning ros2 and I want to create a new package, and I noticed that it is possible to create a package with 2 different build types, ament_cmake and ament_python. However, I didn't find any explanation about the difference between both, what are the advantages and disadvantages of each one? Is one meant for c++ and the other for python?

I am following this tutorial: https://index.ros.org/doc/ros2/Tutori...

That makes sense. Thanks!

Maybe building a smaller image would help? From what I understood, it builds all this packages: https://raw.githubuserco

Maybe building a smaller image would help? From what I understood, it builds all this packages: https://raw.githubuserco

Maybe building a smaller image would help? From what I understood, it builds all this packages: https://raw.githubuserco

Maybe building a smaller image would help? From what I understood, it builds all this packages: https://raw.githubuserco

Maybe building a smaller image would help? From what I understood, it builds all this packages: https://raw.githubuserco

Maybe build a smaller image would help? From what I understood, it is build all this packages: https://raw.githubusercon

Maybe build a smaller image would help? From what I understood, it is build all this packages: https://raw.githubusercon

Maybe build a smaller image would help? From what I understood, it is build all this packages: https://raw.githubusercon

Maybe build a smaller image would help? From what I understood, it is build all this packages: https://raw.githubusercon

I have to say that the docker container created from this image seems slower when running in the raspberry pi 3. For exa

Thanks for your answer. I tried replicating what you posted, but I am getting an error. It seems that docker is using u

[ROS2] time.sleep() in a node Basically, I want to do the same thing as described in this other question but in ROS2: ht

[ROS2] time.sleep() in a node Basically, I want to do the same thing as described in this other question but in ROS2: ht

[ROS2] time.sleep() in a node Basically, I want to do the same thing as described in this other question but in ROS2: ht

Using ubuntu 20.04 + ROS2 foxy

I am trying to call a service from mavros package with ros2, but it gets stuck in waiting for service to become available... I am pretty the service is available. I can see it with ros2 service list. Is this a bug with ros2? foxy? I saw some issues on github about people complaining about bugs depending on the DDS, can this be related?

service call:

ros2 service call /mavros/cmd/arming mavros_msgs/srv/CommandBool '{value: True}'
waiting for service to become available...

ros2 service list:

ros2 service list -t | grep cmd
/mavros/cmd/arming [mavros_msgs/srv/CommandBool]
/mavros/cmd/command [mavros_msgs/srv/CommandLong]

Issue on github related to this: https://github.com/mavlink/mavros/iss...

I updated and restarted my computer and it worked...

[ROS2] Service call keeps waiting for the service to be available Using ubuntu 20.04 + ROS2 foxy I am trying to call a