How to generate OSI trace file when simulating the example FMUs?

[Hela-Guesmi]

Describe the problem

As a first test, I want to run the DummySource and the dummySensor FMUs in an FMI co-simulator. In order to be able to validate the simulation result, I would like to generate the trace files to read with the OSI visualizer.

Describe what you have already tried

I imported both FMUs in a middleware and simulated them. And I would like to validate the simulation result.

Ask your question

1- Is there any mechanism that allows to generate such trace files? I couldn't find in the documentation any C++ tutorial/example describing such option. 2- Is there also any reference trace file against which to compare?

[vkresch]

@Hela-Guesmi use for the trace files generation python for now (see here an example) because C++ is very verbose in that regard.

If you still want to use C++ see here for google's tutorial on how to encode messages. If you learned how to serialize one message you can append those serialized messages in a loop into a file with $$__$$ separation (.txt files) or length separation (.osi files). Those files can than be played with the osi-visualizer.

Currently there is no reference file but the osi-validator repo have an example trace file which is used for validation tests. It can also be played with osi-visualizer when you decompress the file. Use lzma -d data/small_test.txt.lzma for decompressing when you're on a linux machine.

Hope this helps :)