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Sipix blink usb "toy" camera
Stuff you need to know to control the *still* part of the camera
These are probably incomplete! but they do appear to work
usb vendor id = 0x0851
usb product id = 0x1542
device has 8megs ram and can take images at 640x480 and 320x240(ish)
usb requests (snooped from doze driver - there listed in the order they appear)
all control requests are on the control pipe
bulk is only used to read data and is on interface 1
Request
-------
no idea what this is for probably camera init?
bmRequestType=c0 Vendor,device to host
bRequest = 5
wValue = 1
Index = 0
Length = 2
Result:2bytes
contains: 01 00
Request
-------
again no idea - possibly camera id? - only first 6 bytes used
bmRequestType=c0 Vendor,device to host
bRequest = 5
wValue = 0
Index = 0
Length = 8
Result:8bytes
contains:01 06 79 10 3e 1e 00 00
Request
-------
Get picture count
bmRequestType=c0 Vendor,device to host
bRequest = 0
wValue = 0
Index = 0
Length = 8
Result:2bytes
contains:04 00 (there were 4 pics in device)
Request
-------
Gets size of specified image, odd in that request is repeated until
first byte in returned data changes to 0
The returned size is in "blocks" these are 0x100 bytes long eithr that
or ive cocked up where the size field is by a byte ;-)
bmRequestType=c0 Vendor,device to host
bRequest = 1
wValue = 0 (image index from 0)
Index = 1
Length = 8
Result:8bytes
contains:01 00 00 00 00 00 00 00
until value changes
Result:8bytes
contains:00 00 10 01 00 00 00 00
8 bytes break down into
byte 00:ready 0 - yes 1 -no
byte 01: size 0
02: size 1
03: size 2
04: size 3
05: format flags
Image Size: Upper 3 bits: (x >> 5)
0 - 640x480
1 - 352x288
2 - 176x144
3 - 320x240
4 - 800x592
5 - 160x120
Unknown: Lower 2 bits ( x & 0x03)
0 -> 2
2 -> 1
3 -> 0
1 -> ?
Unknown: Mid 3 bits ( (x >> 2) & 0x07)
06
07
request
-------
Positions bulk pipe ready to download image
Again request is repeated until returned data byte 0 is set to 0
bmRequestType=c0 Vendor,device to host
bRequest = 2
wValue = 0 (image index)
Index = 0
Length = 6
Result:6bytes
contains:01 00 00 00 00 00
until data changes to:
contains:00 00 00 00 00 00
opens bulk pipe and starts reading data in 0x100(256) byte chunks
closes bulk pipe
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