Hello, I'm kinda stuck. If I use libusb0 back-end first device works just
fine but second one uses isochronous transfer which is not implemented in
libusb0 back-end.
If I switch to libusb1 back-end I'm getting strange errors even with first
device:
2014-07-13 12:23:38,073 DEBUG:usb.backend.libusb1:_LibUSB.__init__(<WinDLL
'C:\Windows\system32\libusb-1.0.dll', handle 721f0000 at 2a09390>)
2014-07-13 12:23:38,076
DEBUG:usb.backend.libusb1:_LibUSB.enumerate_devices()
2014-07-13 12:23:38,329
DEBUG:usb.backend.libusb1:_LibUSB.get_device_descriptor(<usb.backend.libusb1._Device
object at 0x02A1EFD0>)
2014-07-13 12:23:38,331
DEBUG:usb.backend.libusb1:_LibUSB.get_device_descriptor(<usb.backend.libusb1._Device
object at 0x02A55070>)
2014-07-13 12:23:38,331
DEBUG:usb.backend.libusb1:_LibUSB.get_device_descriptor(<usb.backend.libusb1._Device
object at 0x02A1EFD0>)
2014-07-13 12:23:38,332
DEBUG:usb.backend.libusb1:_LibUSB.get_device_descriptor(<usb.backend.libusb1._Device
object at 0x02A55090>)
2014-07-13 12:23:38,332
DEBUG:usb.backend.libusb1:_LibUSB.get_device_descriptor(<usb.backend.libusb1._Device
object at 0x02A1EFD0>)
2014-07-13 12:23:38,334
DEBUG:usb.backend.libusb1:_LibUSB.get_device_descriptor(<usb.backend.libusb1._Device
object at 0x02A55070>)
2014-07-13 12:23:38,334
DEBUG:usb.backend.libusb1:_LibUSB.get_device_descriptor(<usb.backend.libusb1._Device
object at 0x02A1EFD0>)
2014-07-13 12:23:38,335
DEBUG:usb.backend.libusb1:_LibUSB.get_device_descriptor(<usb.backend.libusb1._Device
object at 0x02A55090>)
2014-07-13 12:23:38,335
DEBUG:usb.backend.libusb1:_LibUSB.open_device(<usb.backend.libusb1._Device
object at 0x02A55090>)
2014-07-13 12:23:38,336
DEBUG:usb.backend.libusb1:_LibUSB.ctrl_transfer(<usb.backend.libusb1._DeviceHandle
object at 0x02A1EEF0>, 128, 6, 768, 0, array('B', [0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]), 1000)
2014-07-13 12:23:38,338
DEBUG:usb.backend.libusb1:_LibUSB.ctrl_transfer(<usb.backend.libusb1._DeviceHandle
object at 0x02A1EEF0>, 128, 6, 768, 0, array('B', [0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]), 1000)
2014-07-13 12:23:38,339
DEBUG:usb.backend.libusb1:_LibUSB.get_configuration_descriptor(<usb.backend.libusb1._Device
object at 0x02A55090>, 0)
2014-07-13 12:23:38,341
DEBUG:usb.backend.libusb1:_LibUSB.get_interface_descriptor(<usb.backend.libusb1._Device
object at 0x02A55090>, 0, 0, 0)
2014-07-13 12:23:38,342
DEBUG:usb.backend.libusb1:_LibUSB.get_configuration_descriptor(<usb.backend.libusb1._Device
object at 0x02A55090>, 0)
2014-07-13 12:23:38,342
DEBUG:usb.backend.libusb1:_LibUSB.get_interface_descriptor(<usb.backend.libusb1._Device
object at 0x02A55090>, 0, 1, 0)
2014-07-13 12:23:38,342
DEBUG:usb.backend.libusb1:_LibUSB.get_configuration_descriptor(<usb.backend.libusb1._Device
object at 0x02A55090>, 0)
2014-07-13 12:23:38,344
DEBUG:usb.backend.libusb1:_LibUSB.get_configuration_descriptor(<usb.backend.libusb1._Device
object at 0x02A55090>, 0)
2014-07-13 12:23:38,344
DEBUG:usb.backend.libusb1:_LibUSB.set_configuration(<usb.backend.libusb1._DeviceHandle
object at 0x02A1EEF0>, 1)
Traceback (most recent call last):
...
File "C:\Python27\lib\site-packages\usb\core.py", line 799, in
set_configuration
self._ctx.managed_set_configuration(self, configuration)
File "C:\Python27\lib\site-packages\usb\core.py", line 128, in
managed_set_configuration
self.backend.set_configuration(self.handle, cfg.bConfigurationValue)
File "C:\Python27\lib\site-packages\usb\_debug.py", line 60, in do_trace
return f(*args, **named_args)
File "C:\Python27\lib\site-packages\usb\backend\libusb1.py", line 730, in
set_configuration
_check(self.lib.libusb_set_configuration(dev_handle.handle,
config_value))
File "C:\Python27\lib\site-packages\usb\backend\libusb1.py", line 552, in
_check
raise USBError(_strerror(ret), ret, _libusb_errno[ret])
usb.core.USBError: [Errno 2] Entity not found
2014-07-13 12:23:38,371
DEBUG:usb.backend.libusb1:_LibUSB.close_device(<usb.backend.libusb1._DeviceHandle
object at 0x02A1EEF0>)
2014-07-13 12:23:38,371 DEBUG:usb.backend.libusb1:_LibUSB.__del__()
I even tried to implement missing iso_read method for libusb0 because
apparently windows version does support it.
Unfortunately I had no luck usb_submit_async returns -22 and I have no idea
why.
@methodtrace(_logger)
def iso_read(self, dev_handle, ep, intf, buff, timeout):
ctx = c_void_p(0)
_lib.usb_isochronous_setup_async(dev_handle, byref(ctx), ep, 1024)
address, length = buff.buffer_info()
length *= buff.itemsize
_lib.usb_submit_async(byref(ctx), cast(address, c_char_p), length)
_lib.usb_reap_async(ctx, timeout)
...
device descs :
DEVICE ID 045e:02b0 on Bus 000 Address 001 =================
bLength : 0x12 (18 bytes)
bDescriptorType : 0x1 Device
bcdUSB : 0x200 USB 2.0
bDeviceClass : 0x0 Specified at interface
bDeviceSubClass : 0x0
bDeviceProtocol : 0x0
bMaxPacketSize0 : 0x40 (64 bytes)
idVendor : 0x045e
idProduct : 0x02b0
bcdDevice : 0x105 Device 1.05
iManufacturer : 0x1 Microsoft
iProduct : 0x2 Xbox NUI Motor
iSerialNumber : 0x0
bNumConfigurations : 0x1
CONFIGURATION 1: 100 mA ==================================
bLength : 0x9 (9 bytes)
bDescriptorType : 0x2 Configuration
wTotalLength : 0x12 (18 bytes)
bNumInterfaces : 0x1
bConfigurationValue : 0x1
iConfiguration : 0x0
bmAttributes : 0xc0 Self Powered
bMaxPower : 0x32 (100 mA)
INTERFACE 0: Vendor Specific ===========================
bLength : 0x9 (9 bytes)
bDescriptorType : 0x4 Interface
bInterfaceNumber : 0x0
bAlternateSetting : 0x0
bNumEndpoints : 0x0
bInterfaceClass : 0xff Vendor Specific
bInterfaceSubClass : 0x0
bInterfaceProtocol : 0x0
iInterface : 0x0
DEVICE ID 045e:02ae on Bus 000 Address 003 =================
bLength : 0x12 (18 bytes)
bDescriptorType : 0x1 Device
bcdUSB : 0x200 USB 2.0
bDeviceClass : 0x0 Specified at interface
bDeviceSubClass : 0x0
bDeviceProtocol : 0x0
bMaxPacketSize0 : 0x40 (64 bytes)
idVendor : 0x045e
idProduct : 0x02ae
bcdDevice : 0x10b Device 1.011
iManufacturer : 0x2 Microsoft
iProduct : 0x1 Xbox NUI Camera
iSerialNumber : 0x3 A00365A11965050A
bNumConfigurations : 0x1
CONFIGURATION 1: 16 mA ===================================
bLength : 0x9 (9 bytes)
bDescriptorType : 0x2 Configuration
wTotalLength : 0x20 (32 bytes)
bNumInterfaces : 0x1
bConfigurationValue : 0x1
iConfiguration : 0x0
bmAttributes : 0xc0 Self Powered
bMaxPower : 0x8 (16 mA)
INTERFACE 0: Vendor Specific ===========================
bLength : 0x9 (9 bytes)
bDescriptorType : 0x4 Interface
bInterfaceNumber : 0x0
bAlternateSetting : 0x0
bNumEndpoints : 0x2
bInterfaceClass : 0xff Vendor Specific
bInterfaceSubClass : 0xff
bInterfaceProtocol : 0xff
iInterface : 0x0
ENDPOINT 0x81: Isochronous IN ========================
bLength : 0x7 (7 bytes)
bDescriptorType : 0x5 Endpoint
bEndpointAddress : 0x81 IN
bmAttributes : 0x1 Isochronous
wMaxPacketSize : 0xbc0 (3008 bytes)
bInterval : 0x1
ENDPOINT 0x82: Isochronous IN ========================
bLength : 0x7 (7 bytes)
bDescriptorType : 0x5 Endpoint
bEndpointAddress : 0x82 IN
bmAttributes : 0x1 Isochronous
wMaxPacketSize : 0xbc0 (3008 bytes)
bInterval : 0x1
Any help would be appreciated.
Regards, PetrS.
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