SPECIFICATION
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3.
USB VENDOR CALLS OVER ENDPOINT 0
The ImageLink should be configured over the 8 Byte of setup data of the specified
vendor calls over transfer endpoint 0.
For the USB standard requests see the USB Specification.
3.1
Backlight requests:
3.1.1 GET_BKL
The GET_BKL request is intended to determine the backlight status (switch ON/OFF).
Request
bmRequest bRequest
Type
wValue
wIndex
wLength
Data
1. Byte
GET_BKL 0xC0
bitmap:
b7
reserved
0
0xB0
0x0000
0x0000
0x0002
bitmap
2.
Byte
0xB0
b6
reserved
0
b5
reserved
0
b4
reserved
0
b3
reserved
0
b2
reserved
0
b1
reserved
0
b0
actual
state
0= OFF
1= ON
DISTEC GMBH
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Germering
30.3.2004/sw1
http://www.distec.de
Tel.: +49-89-89 43 63-0
Fax: +49-89-89 43 63-39
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