Input Devices

Discrete (tactile) button arrangements

5 buttons, + arrangement

From a driver/API point of view, this is identical to a digital joystick with push support.

	Up
Left	OK	Right
	Down

Event to functionality mapping via driver library Events and a software State Machine

• OK button
  • SingleClick: Select item
  • LongClick: Edit (when selecting) / Save and Exit (when editing)
  • DoubleClick: Exit / Escape
• Up button SingleClick: Above menu item / Increase value by 1 LongClick: / Increase value by multiple, using acceleration
• Down button SingleClick: Below menu item / Increase value by 1 LongClick: / Decrease value by multiple, using acceleration
• Left button SingleClick: select Digit/Character to the left
• Right button SingleClick: select Digit/Character to the left

4 buttons, diamond pattern

	Up
Exit		OK
	Down