A-5
GPIO WDT BKL Programming
MS-9A79
LVDS Backlight Brightness Control
3. LVDS
Backlight
Brightness
Control
The
LVDS
controller
support
17
level
of
backlight
brightness
value
from
0
(30%)
to
16
(100%)
and
it
is
accessible
through
SMBus.
The
associated
access
method
(
SMBus_ReadByte
,
SMBus_WriteByte
)
are
provided
in
part
4.
3.1
Set
the
Level
of
LVDS
Backlight
1. Write
0xED
into
address
0x7F
on
SMBus
device
0x42
.
2. Write
desired
backlight
level
from
0x0
(30%)
to
0x10
(100%)
into
address
0x6E
on
SMBus
device
0x42
.
Example:
Set
LVDS
backlight
level
to
0x10
(100%)
SMBus_WriteByte
(0x42,
0x7F,
0xED);
SMBus_WriteByte
(0x42,
0x6E,
0x10
);
//
Set
brightness
to
100%
3.2
Read
the
Level
of
LVDS
Backlight
1.Write
0xED
into
address
0x7F
on
SMBus
device
0x42
.
2.Read
current
backlight
level
from
address
0x6E
on
SMBus
device
0x42
.
Example:
Get
LVDS
backlight
level
SMBus_WriteByte
(0x42,
0x7F,
0xED);
BKL_Value
=
SMBus_ReadByte
(0x42,
0x6E);
Содержание 939-9A79-002
Страница 1: ...i MS 9A79 Industrial Data Machine...
Страница 8: ......
Страница 11: ...1 3 MS 9A79 System Overview h h System I O Controls 1 7 8 1 2 3 4 5 14 9 10 11 12 13 16 6 1 1 15...
Страница 22: ...1 14 Overview System Dimensions...
Страница 23: ...1 15 MS 9A79 Mounting Brackets...
Страница 24: ...1 16 Overview...
Страница 31: ...2 7 MS 9A79 6 Connect the antenna cables...
Страница 37: ...2 13 MS 9A79 8 Fasten the screws to secure the system cover...
Страница 46: ......
Страница 66: ......