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I'm trying to set up micro-ROS on Ubuntu 20.04 using this website, and connect ESP32 to ROS 2. However, when executing the command ros2 run micro_ros_setup create_firmware_ws.sh freertos esp32, I get the following error:

ERROR: the following packages/stacks could not have their rosdep keys resolved
to system dependencies:
rclc_parameter: Cannot locate rosdep definition for [osrf_testing_tools_cpp]
rmw: Cannot locate rosdep definition for [osrf_testing_tools_cpp]
rmw_implementation: Cannot locate rosdep definition for [rcpputils]
rosidl_typesupport_c: Cannot locate rosdep definition for [mimick_vendor]
rosidl_default_runtime: Cannot locate rosdep definition for [rosidl_typesupport_introspection_cpp]
rcl_logging_noop: Cannot locate rosdep definition for [launch_testing]
rosidl_typesupport_microxrcedds_c_tests: Cannot locate rosdep definition for [rosidl_typesupport_introspection_c]
tracetools_launch: Cannot locate rosdep definition for [launch_ros]
rcutils: Cannot locate rosdep definition for [osrf_testing_tools_cpp]
rcl_action: Cannot locate rosdep definition for [osrf_testing_tools_cpp]
libyaml_vendor: Cannot locate rosdep definition for [rcpputils]
rcl_lifecycle: Cannot locate rosdep definition for [osrf_testing_tools_cpp]
tracetools_test: Cannot locate rosdep definition for [launch_ros]
test_rmw_implementation: Cannot locate rosdep definition for [rmw_dds_common]
rclc_lifecycle: Cannot locate rosdep definition for [osrf_testing_tools_cpp]
rosidl_typesupport_cpp: Cannot locate rosdep definition for [rcpputils]
rcl: Cannot locate rosdep definition for [rcpputils]
ros2trace: Cannot locate rosdep definition for [ros2cli]
rclc: Cannot locate rosdep definition for [osrf_testing_tools_cpp]

Is there any solution?

Incidentally, I implemented the following solution suggested by ChatGPT, but it didn't improve the situation.

  • Update ROS 2 dependencies. rosdep update
  • Install System Packages, which ROS2 packages or stacks depend on. rosdep install --from-paths /path/to/your/ros2/workspace --ignore-src --rosdistro <your_ros_distro>
  • Rebuild the ROS 2 workspace. colcon build
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  • $\begingroup$ Hi Leonardo. What ros distro are you using? $\endgroup$
    – Christian
    Commented Oct 9, 2023 at 7:34

1 Answer 1

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Since you mention that you are using Ubuntu 20.04, you can not use the tutorial. It is written for Ubuntu 22.04 (https://micro.ros.org/docs/tutorials/core/first_application_rtos/freertos/#:~:text=Hawksbill%20on%20your-,Ubuntu%2022.04,-LTS%20computer.%20To)

I assume you are trying to use galactic, which is not supported any more (https://docs.ros.org/en/rolling/Releases.html)

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  • $\begingroup$ After I changed from ubuntu 20.04 to 22.04, the error has been resolved. Thank you! $\endgroup$
    – Kimura
    Commented Oct 10, 2023 at 7:04

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