eProsima Shapes Demo can't receive messages from Simulink generated Data Writer

I'm trying DDS Blockset Shapes Demo - MATLAB & Simulink (mathworks.com) together with eProsima Shapes Demo, and I discovered that the eProsima Shapes Demo can't receive messages from the Simulink generated DDS Data Writer. To reproduce this unexpectedness, try the following reproduction steps:

1. open the DDS Blockset Shapes Demo - MATLAB & Simulink (mathworks.com) example.
2. build the executable by sending Ctrl+B to shapesdemo.slx, and run the generated shapesdemo.exe
3. open eProsima Shapes Demo and add one Square Publisher and one Circle Subscriber:
4. see there's no Circle displayed on the eProsima Shapes Demo canvas, which is unexpected.
5. to inspect the problem, add printing functions to DDS Data Reader & Data Writer in Simulink as shown in the attached ShapesDemoWithConsolePrinting.slx
6. generate executable from ShapesDemoWithConsolePrinting.slx and run the corresponding ShapesDemoWithConsolePrinting.exe. See that the Simulink generated program can both receive and send the Square/Circle DDS message, despite the fact that eProsima Shapes Demo is not displaying what Simulink sends in step 4.

Is this unexpectedness a bug? How to work around the problem?

[Ibtehaj Raza]

Hi, I am facing the same issue. Were you able to solve this?

[Yingao Zhang]

Nope, Ibtehaj. Unfortunately 😂

[Ibtehaj Raza]

😔

[jinchao Dang]

Hi, could you tell me how to display the sample data on the terminal?

[Chuguang Pan]

Hi, I run the corresponding ShapesDemoWithConsolePrinting.exe according to your steps, but there is no display in the terminal. Could you give some suggestions ?

Answer 1

[Mark McBroom]

In R2021b on a Windows computer, the generated .exe from the attached mdoel works with RTI ShapesDemo on my computer. This model uses eProsima DDS. In order to use this example, rename untitled_sldd.m to untitled.sldd.

[Yingao Zhang]

Dear Mark, thanks for your attached example. I tried your model, but still can't get RTI ShapesDemo work as expected to receive the Circle message from your Simulink model. I tried both "Shape" DataType and "Shape Extended" DataType provide by RTI. Simulink can receive Square message from both DataTypes, but ShapesDemo can receive none from Simulink. Could you please kindly give me a screenshot showing your RTI ShapesDemo DataReader & DataWriter settings?

Answer 2

[Mark McBroom]

This looks like a problem with the eProsima ShapesDemo. You should contact eProsima.

[Yingao Zhang]

Hi, Mark, I tried RTI Shapesdemo also. However, neither eProsima nor RTI could hear from MATLAB. Do you know any other Shapesdemo vendor that I can try?