3 button menu for 16x2 LCD - help needed

[gcjr]

@amy_81

I want to use 3 push buttons (I know would be easier with 4) to control menu and options for each setting. Button1 (-/down), button2 (+/up), button3 (enter/exit).

i think you need

• plus button that wraps around to the beginning
• accept button to select the currently displayed option
• exit button to go back to previous menu without accepting an option