19
Serial/Ethernet/USB Communication (SCOM) Interface
IND100084-18
"BRU" - User Brightness Control
This command controls the user brightness control (BRU). If BRT is 100%, the user can adjust the user brightness
(BRU) from 0-100%. If the BRT is set to 60%, the visual brightness is set to 60%. The user can adjust the user
brightness (BRU) from 0-100% within the 60% set by BRT. If the user sets the user brightness to half (BRU=50%),
the visual brightness will be 30% (half of 60%). If BRT is set back to 100%, the visual brightness will be 50% (half of
100%).
Note: BRU read is also open to VS for user brightness inquiry.
Byte #
0
1
2
3
4
5
6
7
8
0x07 0xFF 0x42 0x52 0x55 0x01 IHCHK BRU IDCHK
BRU:
A value describing the brightness. This command can be directly adjusted using buttons.
Range: [0x00-0xFF]
0x00: is off.
0xFF: is max brightness.
After unit reset the value is set to: last stored value.
After microcontroller reset the value is set to: last stored value. (0xFF if no stored value)
Write:
Set the BRU variable. The brightness value shall be sent as 1 byte in the DATA field.
Example:
Set 60% Brightness:
0x07
0xFF
0x42
0x52
0x55
0x01
0x0F
0x99
0x66
ACK reply from unit:
0x06
0xFF
0x42
0x52
0x55
0x01
0x0A
0x99
0x66
Read:
Get the BRU valuable. To trigger a BRU read command, the length of the DATA field must be zero. The DATA field in
the microcontroller reply will indicate the current brightness control setting.
Example:
Get BRU value:
0x07
0xFF
0x42
0x52
0x55
0x00
0x09
ACK reply from unit:
0x06
0xFF
0x42
0x52
0x55
0x01
0x0A
0x99
0x66
