BSWA 308 - Page 90

BSWA 308/309 BSWA Technology Co., Ltd
88
Byte
1
1
1
1
Return
Return contrast setting
Example: query contrast setting
02 01 43 43 4F 4E 3F 03 3E 0D 0A
Returns: the current contrast is 7
02 01 41 30 37 03 46 0D 0A
BLTp1_p2: Set Backlight
Instruction
Parameter 1
Parameter 2
Explanation
BLT
p1: TimeOut;
0=ON, Auto shut down;
1=OFF, Never turn off;
Default: 0
p2: Delay;
0=10s; 1=20s; 2=30s;
3=40s; 4=50s; 5=60s;
Default: 0
ASCII
B
L
T
0
0
Hex
42H
4CH
54H
30H
30H
Byte
1
1
1
1
1
Return
ACK / NAK
Example: set backlight as timeout: ON, delay: 20s
02 01 43 42 4C 54 30 20 31 03 38 0D 0A
Return: ACK
02 01 06 03 06 0D 0A
BLT?: Query Backlight Setting
Instruction
Parameters
Explanation
BLT
Query parameter: ?
ASCII
B
L
T
?
Hex
42H
4CH
54H
3FH
Byte
1
1
1
1
Return
Return backlight settings
Example: query the backlight settings
02 01 43 42 4C 54 3F 03 26 0D 0A
Return: the current backlight setting is timeout=OFF, delay=20s (delay is useless when
backlight timeout is OFF)
02 01 41 31 2C 31 03 6D 0D 0A