Hi all,
I'm now using windows XP, however, when I now run the code, the app hangs
after the call to set_configuration()
Any ideas?
Thanks in advance,
Kevin.
On Sun, Apr 11, 2010 at 12:57 PM, Xiaofan Chen <xiaof...@gmail.com> wrote:
> On Sun, Apr 11, 2010 at 6:43 PM, Kevin Kilroy <kevkil...@googlemail.com>
> wrote:
> > I'm now trying on Ubuntu (8.04 64bit) & I'm now receiving this error:
> >
> >
> > File "test.py", line 13, in <module>
> > dev.set_configuration()
> > File "/usr/lib/python2.5/site-packages/usb/core.py", line 511, in
> > set_configuration
> > self._ctx.managed_set_configuration(self, configuration)
> > File "/usr/lib/python2.5/site-packages/usb/core.py", line 82, in
> > managed_set_configuration
> > self.backend.set_configuration(self.handle, cfg.bConfigurationValue)
> > File "/usr/lib/python2.5/site-packages/usb/backend/libusb01.py", line
> 399,
> > in set_configuration
> > _check(_lib.usb_set_configuration(dev_handle, config_value))
> > File "/usr/lib/python2.5/site-packages/usb/backend/libusb01.py", line
> 352,
> > in _check
> > raise USBError(errmsg)
> > usb.core.USBError: could not set config 1: Device or resource busy
> >
>
> Again you have to detach the kernel HID driver to make libusb/pyusb
> working for USB device.
>
> For libusb01 backend, pyusb has this. You need to call it before
> setting the configuration.
> def detach_kernel_driver(self, dev_handle, intf):
> _check(_lib.usb_detach_kernel_driver_np(dev_handle, intf))
>
> For libusb10, pyusb has the following.
> # int libusb_detach_kernel_driver(libusb_device_handle *dev,
> # int interface)
> lib.libusb_detach_kernel_driver.argtypes = [
> _libusb_device_handle,
> c_int
> ]
>
> --
> Xiaofan http://mcuee.blogspot.com
>
>
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