Return Messages; Special Command Extension - HP LT3200 Service Manual

Return messages

For every command, TV should return reply. Controller waits before sending another command because some
commands take time before TV is ready to accept next command. For example, the "channel scan" command takes
minutes.
For Normal Response
For Error condition:

Special command extension

CONTROL
Command
ITEM
GET G
STATUS
(Return
current TV
status
value)
Get Status RETURN message format for "GST"(Get Statue) command:
? O
Format of WXYZ (always 4 bytes):
For all return values: (add prefix with 0s, right justify).
If volume is 89, return value will be 0089 (add '00').
If channel is 7, return value will be 0007 (add '000').
If Mute is 1, return value will be 0001 (add '000').
HP High-Definition LCD TV Service Manual
32
O K CR
CR : Carriage Return (0Dh)
E R R CR
CR : Carriage Return (0Dh)
PARAMETER
S T 0 _ _ _
1 _ _ _
2
3
4
5
6
7
8
9
A
B
C
K W X
Parameter Return Data
Power 0: Off (return from MCU), 1: On
Mute 0: Off, 1: On, 2: On Mute
Volume Current Volume level: 0 ~ 100 (ASCII format)
CH (major) 0 ~ 9999 (e.g.) Ch 99 : 0099, Ch 9 : 0009 in
ASCII)
CH (minor) 0 ~ 9999 (e.g.) Ch 99 : 0099, Ch 9 : 0009 in
ASCII)
Caption 0: Off, 1: On
Input source 0 ~ 8 : (TV Air/Cable, AV1, AV2, YPbPr1,
YPbPr2, VGA, HDMI1, HDMI2, HDMI3)
Aspect 0: Auto, 1: (16:9), 2: (4:3), 3: (Zoom1), 4:
(Zoom2), 5: (Panorama)
Brightness 0 ~ 100 (e.g. 7 -> 0007, 77 -> 0077) in ASCII
Contrast 0 ~ 100 (e.g. 7 -> 0007, 77 -> 0077) in ASCII
Sharpness 0 ~ 100 (e.g. 7 -> 0007, 77 -> 0077) in ASCII
Color 0 ~ 100 (e.g. 7 -> 0007, 77 -> 0077) in ASCII
Hue 0 ~ 100 (e.g. 7 -> 0007, 77 -> 0077) in ASCII
Y Z CR 0 0 0 0