Fix the path/command issue in Windows & Add the temp branch oae-fw for the OAE

[Ekrynox]

Hello,

I made a new fix for the Windows path/command length problem. This one keeps the PlatformIO install inside Temp folder.
Instead, it replaces the install directory with an environment variable.
should partially fix #62

Tested on Windows 11 and an Hyper-V Debian virtual machine

Works in this folder:

oat_fw_gui_2025-08-06-18-54-46.log

[julianneswinoga]

👍 for adding oae-fw, makes sense that it's released now. I was hoping we'd get a simultaneous merge into the firmware repo but this works for now.

I'm not quite sure what the actual fix is though? I see INSTALL_DIR being set but I don't see anything in the platformio documentation about what that affects. Could you explain that a bit more?

[Ekrynox]

Hello, the objective of INSTALL_DIR is not to target a specific function inside PlatformIO, but to replace a longer path with %INSTALL_DIR% on windows to shorten internal commands.

[julianneswinoga]

Sorry, still not quite understanding it... If platformio isn't using INSTALL_DIR where is it being used? The root problem is the esp32 toolchain having many duplicated -i include paths, but if it's not using INSTALL_DIR then I don't understand how setting it affects that.

[Ekrynox]

No problem :)
Instead of storing the full Path to logic_state.fw_dir, i only give it "%INSTALL_DIR%" on windows. So QProcess retrieves a shortened path.
It is true that in the log, the full path appears, but under the hood, the command is run with "%INTALL_DIR%" and only the full path is printed when logging/displaying.
But, I may be entirely wrong...
At the moment, on my mount, I used a firmware successfully compiled with it (wouldn't compile without it).
If you'd like, I can see if others can test on their system.

[julianneswinoga]

Ok sorry for the delayed response but I did some digging on this. Unfortunately I don't think setting the INSTALL_DIR environment variable is doing anything ☹️

I believe what is happening is that you're using a dev version of OATFWGUI, which sets the PLATFORMIO_CORE_DIR directory to C:/Users/user/AppData/Local/Temp/.pioOATFWGUI2.0.4. During the release process, the version gets stamped with a suffix of -release+<hash> for a PLATFORMIO_CORE_DIR directory of C:/Users/user/AppData/Local/Temp/.pioOATFWGUI2.0.4-release+<hash>. The .pio directory is used ~200 times each time the compiler in invoked, so 200 * 15 chars = an extra 3000 chars.

So I'm happy to be proven wrong, but I don't think INSTALL_DIR is doing anything here... If you want to test for yourself you can put a suffix of -release+a37019 in the __version__ of the OATFWGUI/_version.py file and see if your fix still works (it didn't for me ☹️)