page 30
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. mikromedia
™
workStation v7 features navigation
switch with five different positions:
Up
,
Down
,
Left
,
Right
and
Push
. Each
of those acts as a button, and is connected
to one of the following microcontroller pins:
G0.6
,
G1.0
,
G0.5
,
G0.7
,
G4.1
(respectively). After
pressing the navigation switch in desired direction,
associated microcontroller pins are connected to GND,
which can be detected in user software. To enable
LEFT
,
UP
,
RIGHT
,
DOWN
,
PUSH
ports you must turn on DIP switches
SW4.1-SW4.5
.
Navigation switch
Figure 10-2: Navigation switch is an intuitive solution for browsing
through on-screen menus.
LEFT
RIGHT
DOWN
PUSH
4
5
6
1
2
3
KEY1
LEFT
UP
RIGHT
DOWN
PUSH
R18
220
DATA BUS
1
2
3
4
5
6
7
8
O
N
SW4
UP
G0.5
G0.6
G0.7
G1.0
G4.1
R
32
1K
R
33
1K
R
34
1K
VCC-3.3V
R
35
1K
R
36
1K
VCC-3.3V
Figure 10-1: Navigation switch connection schematic.
other modules
