Re: [pyusb-users] Help with reading data from HID device

[Kevin K. <kev...@go...>]

Hi all,

I'm having difficulty getting pyusb to find my HID usb device, here are the
steps I have taken so far:

Download & install pyusb-1.0.0-a0 (by unpacking & excuting python setup.py
install from within cygwin)

Download & unpack libusb10 (***2010.04.21
(r268)<http://libusb-winusb-wip.googlecode.com/files/libusb_2010.04.21.7z>
) * from http://libusb-winusb-wip.googlecode.com/files/libusb_2010.04.21.7z

Copied libusb-1.0.dll from MinGW32\dll to windows/sytem32

Created a test program with the following:

import usb.core
import usb.util

# Find our device
dev = usb.core.find(find_all=True, idVendor=0xd209, idProduct=0x1501)

# Was it found?
if dev is None:
        raise ValueError('Device not found')

print 'There are ' + str(len(dev)) + ' devices found. '

However when I run this it says 0 devices found, even though the device is
recognised by windows device manager & I can use the game controller
properties in control panel to see the device working.

Can anybody see what I may have done wrong?

p.s. if I remove the find_all parameter then I get the ValueError
exception....

Thanks in advance,

Kevin





download & build

On Sun, Apr 11, 2010 at 11:43 PM, Xiaofan Chen <xia...@gm...> wrote:

> On Sun, Apr 11, 2010 at 10:40 PM, Kevin Kilroy <kev...@go...>
> wrote:
> > Hi all,
> >
> > I'm now using windows XP, however, when I now run the code, the app hangs
> > after the call to set_configuration()
> >
>
> If you are using the libusb01 backend, then you have to replace the
> HID driver with the libusb-win32 device driver.
>
> If you are using the libusb10 backend under Windows XP, then
> you do not need to replace the HID driver. libusb 1.0 Windows
> backend supports HID. But then you need to download the
> binary snapshots and put the DLL inside windows\system32
> directory (Please use the VC/DDK version).
>
> http://www.libusb.org/wiki/windows_backend
>
> --
> Xiaofan http://mcuee.blogspot.com
>
>
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