Dear all,
I recently tried to have a wireless microscope working with the em28xx
driver; the device is the following:
http://www.cosview.com/cp/html/?3.html
it is listed in the usb bus with vendor id 14c3 and product id 2301.
Looking the .inf of the MS windows driver I noticed that it seems to be
based on a Empia em2860 chipset, therefore I modified the em28xx driver
of the 2.6.24 linux kernel (specifically 2.6.24-28-generic linux kernel
in a Ubuntu Hardy distribution) so that this particular vendor id and
product id are associated to that driver (pls find patch below).
In fact this trick has worked, at least as far as the images are
concerned (there is also a button to take picture which I will be
working on later), and I've been able to see the images with the
following parameters of mplayer:
mplayer -tv driver=v4l2:device=/dev/video0:norm=NTSC -vo x11 tv://
I now need to upgrade the linux kernel to a newer version (2.6.32 or
newer); I followed the same path that was working with 2.6.24 (which is
basically have the device recognized as an empia device) and in fact
some images are visible but they are not stable; it seems as the new
driver version was not capble of managing the NTSC format (in fact I
noticed there is no more .norm field in the initialization structure).
Do you have any advice?
Thanks in advance,
Andrea
diff em28xx-modified/em28xx-cards.c em28xx-orig/em28xx-cards.c
266,283d265
< [EM2861_BOARD_COSVIEW] = {
< .name = "Cosview Driver",
< .is_em2800 = 0,
< .vchannels = 2,
< .norm = VIDEO_MODE_NTSC,
< .tda9887_conf = TDA9887_PRESENT,
< .has_tuner = 1,
< .decoder = EM28XX_SAA7113,
< .input = {{
< .type = EM28XX_VMUX_COMPOSITE1,
< .vmux = SAA7115_COMPOSITE0,
< .amux = 1,
< },{
< .type = EM28XX_VMUX_SVIDEO,
< .vmux = SAA7115_SVIDEO3,
< .amux = 1,
< }},
< },
295,296d276
< { USB_DEVICE(0x2040, 0x6502), .driver_info =
EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900 },
< { USB_DEVICE(0x14c3, 0x2301), .driver_info = EM2861_BOARD_COSVIEW },
diff em28xx-modified/em28xx.h em28xx-orig/em28xx.h
49d48
< #define EM2861_BOARD_COSVIEW 14
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