Re: [Libusb-win32-devel] devices list is empty on Windows x64

[Xiaofan C. <xia...@gm...>]

On Sat, Mar 19, 2011 at 4:04 AM, karlhoover <kar...@gm...> wrote:
> We use libusb in our microscope automation system. I've updated to
> libusb-win32 1.2.2.0
>
> The following code works fine, and prints out a buss name bus-0 on both
> platforms. It finds, for example, my Velleman 8055 on x86 but bus->devices
> list is a null pointer on x64 on identical hardware. I've triple checked the
> installation of the libusb0.sys and libusb0.dll files. I temporarily disable
> digital driver signing enforcement when I boot Windows 7, so I do not think
> this is a problem with driver signing. Any ideas what I should try next?
>

If you use 1.2.2.0, you do not need to disable the driver signing
enforcement since the kernel driver has embedded digital signature
so that it works under 64bit Windows 7 and Vista.

How do you install the driver? You should try to use the INF Wizard
if you use the device driver mode or Filter Wizard if you use the
filter driver. Since the k8055 is an HID device, are you using the
filter driver mode?

What is the output of testlibusb-win test program?

-- 
Xiaofan