dannee's profile - activity

Is it possible to add emulate_tty option in a yaml launch file? I know this option can be added when writing a launch fi

Colcon test fails with "collection failure" When I try and run the 'colcon test' command it fails with: Starting >&g

I don't see why it isn't already supported. Can you explain more?

Thank you!

Hi,

I'm not getting proper error messages when I use a timer in combination with a MultiThreadedExecutor. Instead of crashing and displaying which line the error occurred I'm just getting The following exception was not retrieved... Here is a minimal example:

import rclpy
from rclpy.node import Node
from rclpy.executors import MultiThreadedExecutor

class TimerNode(Node):

    def __init__(self):
        super().__init__('timer_test_node')
        self.timer = self.create_timer(
            0.1, 
            self.timer_callback,
        )

    def timer_callback(self):
        print("Timer callback called")
        variable

def main(*args, **kwargs):
    rclpy.init(*args, **kwargs)
    node = TimerNode(*args, **kwargs)

    executor = MultiThreadedExecutor(num_threads=4)
    executor.add_node(node)
    executor.spin()

if __name__ == '__main__':
    main()

Instead of crashing the following lines are repeated:

Timer callback called

The following exception was never retrieved: name 'variable' is not defined

Does anyone know how retrieve the exception and display the proper error message? It crashes as it should when using the default executor. It also crashes as it should when the error is not a timer callback function, i.e when called in a normal function.

If anyone is looking for the python answer, it can be called with: rclpy.logging.get_logger(name)

I think we misunderstand each other. My problem is not what is causing the errors. It's about how errors are displayed i

I think we misunderstand each other. My problem is not what is causing the errors. It's about how errors are displayed i

I think we misunderstand each other. My problem is not what is causing the errors. It's about how errors are displayed i

@ravijoshi Thanks for your comment. However I know that my variable is not defined. It's not defined in order to crash t

@ravijoshi Thanks for your comment. However I know that my variable is not defined. It's not defined in order to crash t

Retrieve error message from timer callback when using MultiThreadedExecutor Hi, I'm not getting proper error messages w

I had the same problem when using ubuntu in vmware. It can be solved with setting the following env variable: export SVG

@printf42 yes! see my answer to this question

You can use the following structure for an action server/client. https://github.com/ros2/rclpy/blob/galactic/rclpy/rclp

Is there any examples in python?

I would also like to know this. Did you find an answer? It seems straightforward in C++ but not in python

I would also like to know this. Did you find an answer?

Wait for timer to end in action callback Hey, I want to send control inputs to a robot from an action callback at 15 ms

By using sudo you are using a different set of environmental variables. So you have to source the ros environment for th