Hacktoberfest 2026: the issues maintainers tagged for October, open and beginner-friendly. Browse Hacktoberfest issues

Error in node state when switching modes

Open
#99 3 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
cpp
Domain
robotics

Research direction

The report provides no source file or test; begin with the ALERT and COMPROMISED YAML and the listed node-state screenshots, then reproduce the alert-to-compromised transition in the described ROS 2 setup. Trace why pc2_1_to_2, scan_1_to_2, and twist_2_to_1 remain active, and verify that every node reaches the state declared for COMPROMISED.

Written by the indexing model from the issue text.

Description

Hello!

I've been working with system_modes for a few days and I'm having an error when changing my system mode.

I have several modes, which are default, alert, compromised and halt, and in this particular example when I change the mode from alert to compromised there are nodes that do not change their status from active to inactive. I leave you images of the monitor so that you can see the result together with the yaml configuration of both modes.

ALERT:
        image_1_to_2: inactive
        imu_1_to_2: active
        odom_1_to_2: active
        pc2_1_to_2: active
        scan_1_to_2: active
        tf_1_to_2: active
        tf_static_1_to_2: active
        twist_2_to_1: active
COMPROMISED:
        image_1_to_2: inactive
        imu_1_to_2: active
        odom_1_to_2: active
        pc2_1_to_2: inactive
        scan_1_to_2: inactive
        tf_1_to_2: active
        tf_static_1_to_2: active
        twist_2_to_1: inactive

System in alert mode:
Screenshot from 2022-12-20 11-08-47

System in compromised mode:
Screenshot from 2022-12-20 11-08-36

I also show you how I have configured the modes of some of the nodes, although I am not using that parameter

pc2_1_to_2:
  ros__parameters:
    type: node
    modes:
      __DEFAULT__:
        ros__parameters:
          use_sim_time: false
      
scan_1_to_2:
  ros__parameters:
    type: node
    modes:
      __DEFAULT__:
        ros__parameters:
          use_sim_time: false

I do not have any type of rule configured, although I suppose that for this simple case of changing node states it would not be necessary.

Any idea what is happening?

Dominant language
C++
Stars
45
Forks
13
PR merge metrics
No merged PRs in 30d

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

More from micro-ROS/system_modes

All issues in micro-ROS/system_modes

Similar issues

More C++ issues

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.