Error in code generation using ROS Toolbox: "Code generation information file does not exist. "

I'm trying to build a simulink model through code generation and then deploy it on ROS2 as a node, but I have this error:

Top model targets built:

Model Action Rebuild Reason

===============================================================================

ControlUAVUsingROS2 Failed Code generation information file does not exist.

0 of 1 models built (0 models already up to date)

Build duration: 0h 5m 59.943s

No matching files named '/home/matteo/Documents/src/lib/libcudnn.so' were found.

How can I fix this problem?

[Jagadeesh Konakalla]

Hi,

From the error messages it looks like you are trying to generated CUDA ROS node from Simulink model.

Please follow the below link for setting up your environement.

Generate CUDA ROS Node from Simulink - MATLAB & Simulink - MathWorks India

If you share your Simulink model, i can take a look at it.

Thanks,

Jagadeesh K.

[Salvatore Matteo Mennea]

Hi, thank you for your help. I'm trying to run this simulink demo https://it.mathworks.com/help/uav/ug/control-simulated-uav-using-ros2-px4-bridge.html#ControlASimulatedUAVUsingROS2AndPX4BridgeExample-3. So I want to convert the simulink file in c++ code to be run in Offboard mode on PX4 firmware as a ROS2 node. I'm getting familiar with this toolbox and I'm trying to learn how it works.

The aim is to create a custum controller on simulink for a quadcopter and then through code generation, simulate it on Gazebe with ROS2 as a node.

Answer 1

[Jagadeesh Konakalla]

Hi,

In the Simulink model configuration, the check box for the Generate GPU code is selected. Can you generate the code by unseleting this checkbox. This needs to be enabled when you are deploying the code to NVIDIA hardware.

You can find the Option here : Model configuration-> Code generation-> Generate GPU Code.

Let me know if this works for you or not.

Thanks,

Jagadeesh K.

[Salvatore Matteo Mennea]

Thank you, I succeeded in building the code. Do you know how can I do to run it as a ROS2 node in a workplace? I'm trying to control a UAV in offboard mode on PX4.

[Jagadeesh Konakalla]

To run the generatd node as is, you can use the Build, Load and Run option with proper settings in the Remote Device details in the Simulink model. Please take alook the following example.

https://www.mathworks.com/help/ros/ug/generate-a-standalone-ros2-node-from-simulink.html