Hi all!

I'm new to ROS2 and micro-ROS and currently going through micro-ROS tutorials trying to learn the basics of how to implement ROS2 publishers, subscribers and service servers/clients on microcontrollers.

I've managed to create publishers and subscribers that communicate with other ROS2 objects via micro-ROS agent. I used the micro-rospublisher and micro-rossubscriber examples from microrosarduino github. Link to examples here: https://github.com/micro-ROS/micro_ros_arduino/tree/humble/examples

However, when trying out the micro-rosaddtwointsservice example code, ROS2 running on my main computer does not detect any services. The example code compiles and uploads to the microcontroller, connection to the micro-ROS agent is made, but command ros2 service list gives empty output, even though service "/addtwoints" should be created in the example code. The node "addtwointsclientrclc" created in the example code, however, is created and command ros2 node list gives output `/addtwointsclientrclc`. Any ideas what am I missing, why there is no service created?

Link to the example micro-rosaddtwointsservice example code: https://github.com/micro-ROS/micro_ros_arduino/blob/humble/examples/micro-ros_addtwoints_service/micro-ros_addtwoints_service.ino

---

I'm using ROS2 Humble on Ubuntu 22.04, with kernel 5.19.0-38.

My microcontroller is Arduino Nano RP2040 Connect.

I installed ROS2 following this installation guide on ROS2 website https://docs.ros.org/en/humble/Installation/Ubuntu-Install-Debians.html

and micro-ROS agent following this guide on micro-ROS website https://micro.ros.org/docs/tutorials/core/first_application_linux/

I'm happy to provide any extra information if I'm missing something in the description.