Hi,
I've been using usb for about a year on many devices but only using a
single interface.
Finally got some hardware that has 2 interfaces and the code I've written
works on linux but fails on windows.
Anyone know if there are special rules required for windows?
Of course I'm using Zadig to set the windows driver to WinUSB.
The first interface open is of course working.
The code is basically:
For a single interface chip (that always works on many linux/windows) it is:
libusb_get_device_list
libusb_get_device_descriptor
libusb_open
libusb_claim_interface 0
Instead for a chip with multiple interfaces I am:
libusb_get_device_list
libusb_get_device_descriptor
libusb_open
libusb_claim_interface 0
libusb_get_device(interface 0 handle)
libusb_open
(libusb_claim_interface 1) <- never gets here
This works on linux but fails on windows on the 2nd open (before claiming
the 2nd interface) with:
[ 1.209821] [00000f94] libusbx: debug [libusb_open] open 2.2
[ 1.209821] [00000f94] libusbx: error [winusbx_open] could not open device
\\.\USB#VID_0403&PID_8350&MI_00#6&2CE4DD9F&0&0000#{C8D1AB34-4B5C-488A-8194-08C26C1A05DA}
(interface 0): [5] Access is denied.
The code is in a github git and the pull request that has the changes for
multiple interfaces is:
https://github.com/ckolivas/cgminer/pull/492/
I've tried this with libusbx-1.0.17.tar.bz2
(and also with libusb-1.0.16-rc10.tar.bz2 that is in that git)
Both give the same open fail - working on linux but failing on windows
A full log up to the failures (at the bottom) can be seen here:
pastebin.com/Rx9jmMnU
-Thanks for any help
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