Logic2 linux software in headless mode + custom protocol analyzer

Logic 2 Software
1

Hi,

I built CI with the help of Logic2 and Saleae logic analyzer for linux.

I have implemented a custom low-level protocol analyzer, which is based on Saleae “Async Serial“.

Could you please advise if it is possible to start logic2 software in headless mode on linux and make somehow custom-Low-Level-analyzer available?

In UI-mode it is possible to select “Settings → Custom Low-Level analysers.“

How can I achieve that in headless mode?

Thank you.

2

@tasifacij Thanks for writing in! We’ve found success with running Logic 2 in a headless environment using XVFB. The setup process is documented below:

As for specifying a directory for your custom analyzers, it doesn’t look like there is a way to do that right now without the GUI. Let me have this reviewed by the software team here to see if there might exist a workaround.

4

I just wanted to add a few things:

Although we don’t have a true headless option, the link @timreyes posted shows how to make sure the software can run on a headless Linux machine.

Unfortunately the automation API does not expose a way to set the custom analyzer directory, but you have a few options for handling this.

  1. If you can run the software manually on the CI machine & with the CI user account, you can set the custom analyzer directory manually. That setting is persisted, so future automated runs will use your path.
  2. The software creates and stores its configuration in ~/.config/Logic/config.json. This includes the custom analyzer directory, which is stored in the key ``. You could copy your local config.json file into your CI environment (which could be done during each CI run before you launch Logic). You can even override the directory the software will use, as outline here: Another location of Presets (Config.json) (configurable?) - #3 by markgarrison
  3. You could avoid needing to set the analyzer directory completely by extracting the Logic 2 software from the AppImage, adding your analyzer to the analyzers, directory, then using the extracted copy in your CI environment. You can extract the AppImage with ./Logic-2.4.39-linux-x64.AppImage --appimage-extract This will extract the contents of the AppImage to a new directory called squash-fs. The Logic binary in that directory can be run to launch the software, and the built-in analyzers are stored in resources/linux-x64/Analyzers (or something like that, I don’t have it up in front of me) you can add your analyzer to that directory. Then when you run the Logic binary, your analyzer will be available, without needing to set the analyzer directory.

If you have any trouble with this, please let us know, and share more details about your configuration! Today, we run our Logic 2 software & automation in CI, on Linux and other platforms, to verify that the automation interface works properly.

1 Like
5

Appreciate your help!