I wanted a persistent custom menu, so, I have slightly changed Free42 code to enter custom menu automatically.
Custom menu becomes practically the system ground state and can't be exited with some exceptions:
- Shift-CUSTOM activates default DM42 F-Button functionality
- In the Prgm mode Exit will exit custom menu - makes easy to access up and down arrows
- Entering other menus will of course exit Custom menu
Attached is the patch file with the source code based on Free42 2.5.16
You can download compiled firmware file with this link:
https://drive.google.com/file/d/1TUnXbR ... sp=sharing
As usual, use it on your own risk - see LICENCE and COPYING files.