I want to make a menu in LCD 16 x 4 in which i can navigate up/down/left/right and select a item and it opens another menu .
Example
.....................................................................................
Item 1 .
Item 2 .
Item 3 .
Item 4 .
.....................................................................................
if there is item 5 added into the menu , then the LCD should show like
Item 2
Item 3
Item 4
Item 5
and when you navigate up then it should show like the first one from item1 to item4. When i use Item1 it should open a menu like
Subitem1
Subitem2
something like that .. can someone help in this how to do this