Navigation Switch - Mikroe EasyMx PRO v7a Manual

KEY1
UP 1
CENTER 2
LEFT 3
Navigation switch connection schematics. Pull-up resistors should be enabled during operation
E a s y M x P R O v 7 a U s e r M a n u a l

Navigation switch

When working with multi media applications it is far more intuitive to use a single
joystick than several different push buttons that are more far apart. This is more
natural for users and they can browse through on-screen menus, or even play
games much easier. EasyMx PRO v7a features navigation switch with five different
positions: Up, Down, Left, Right and Center. Each of those acts as a button, and
is connected to one of the following microcontroller pins: PD4, PB5, PD2, PA6,
PC13 (respectively). Before using the navigation switch, it is necessary to pull-up
mentioned microcontroller pins using tri-state DIP switches located in I/O groups.
After pressing the navigation switch in desired direction, associated microcontroller
pins are connected to GND, which can be detected in user software.
4 RIGHT PA6
+
1 2 3 4 5 6 7 8
5
UP
PULL
6 DOWN PB5
DOWN DOWN
_
SW2
PD2
PC13
VCC-3.3V
PD4
+
+ 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
UP UP
PULL
PULL
DOWN
_ _
SW4 SW5
VCC-3.3V VCC-3.3V
DATA BUS
+
1 2 3 4 5 6 7 8
UP
PULL
DOWN
_
SW8
VCC-3.3V