So ultimately then are you referring to this then?
https://github.com/gbishop/cython-hidapi
If so am I to conclude there is currently no pure-python way of properly
sending/receiving messages to this HID device at this time... or is there a
library I am missing? If cython-haidapi is the only reasonable next step
then I suppose I will take it.
Before I go down that path however, do you know of any ways to verify for
sure if the fault is in libusb, pyusb, or my python code?
On Sun, Feb 12, 2012 at 7:01 AM, Wander Lairson Costa <
wander.lair...@gmail.com> wrote:
> 2012/2/12 Lance R. Vick <la...@lrvick.net>:
> > Sure.
> > _____________________________________________
> >
> > Bus 003 Device 032: ID 0c45:7401 Microdia
> >
> > Device Descriptor:
> > bLength 18
> > bDescriptorType 1
> > bcdUSB 2.00
> > bDeviceClass 0 (Defined at Interface level)
> > bDeviceSubClass 0
> > bDeviceProtocol 0
> > bMaxPacketSize0 8
> > idVendor 0x0c45 Microdia
> > idProduct 0x7401
> > bcdDevice 0.01
> > iManufacturer 1 RDing
> > iProduct 2 TEMPer1V1.1
> > iSerial 0
> > bNumConfigurations 1
> > Configuration Descriptor:
> > bLength 9
> > bDescriptorType 2
> > wTotalLength 59
> > bNumInterfaces 2
> > bConfigurationValue 1
> > iConfiguration 0
> > bmAttributes 0xa0
> > (Bus Powered)
> > Remote Wakeup
> > MaxPower 100mA
> > Interface Descriptor:
> > bLength 9
> > bDescriptorType 4
> > bInterfaceNumber 0
> > bAlternateSetting 0
> > bNumEndpoints 1
> > bInterfaceClass 3 Human Interface Device
> > bInterfaceSubClass 1 Boot Interface Subclass
> > bInterfaceProtocol 1 Keyboard
> > iInterface 0
> > HID Device Descriptor:
> > bLength 9
> > bDescriptorType 33
> > bcdHID 1.10
> > bCountryCode 0 Not supported
> > bNumDescriptors 1
> > bDescriptorType 34 Report
> > wDescriptorLength 65
> > Report Descriptors:
> > ** UNAVAILABLE **
> > Endpoint Descriptor:
> > bLength 7
> > bDescriptorType 5
> > bEndpointAddress 0x81 EP 1 IN
> > bmAttributes 3
> > Transfer Type Interrupt
> > Synch Type None
> > Usage Type Data
> > wMaxPacketSize 0x0008 1x 8 bytes
> > bInterval 10
> > Interface Descriptor:
> > bLength 9
> > bDescriptorType 4
> > bInterfaceNumber 1
> > bAlternateSetting 0
> > bNumEndpoints 1
> > bInterfaceClass 3 Human Interface Device
> > bInterfaceSubClass 1 Boot Interface Subclass
> > bInterfaceProtocol 2 Mouse
> > iInterface 0
> > HID Device Descriptor:
> > bLength 9
> > bDescriptorType 33
> > bcdHID 1.10
> > bCountryCode 0 Not supported
> > bNumDescriptors 1
> > bDescriptorType 34 Report
> > wDescriptorLength 41
> > Report Descriptor: (length is 41)
> > Item(Global): Usage Page, data= [ 0x00 0xff ] 65280
> > (null)
> > Item(Local ): Usage, data= [ 0x01 ] 1
> > (null)
> > Item(Main ): Collection, data= [ 0x01 ] 1
> > Application
> > Item(Local ): Usage, data= [ 0x01 ] 1
> > (null)
> > Item(Global): Logical Minimum, data= [ 0x00 ] 0
> > Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255
> > Item(Global): Report Size, data= [ 0x08 ] 8
> > Item(Global): Report Count, data= [ 0x08 ] 8
> > Item(Main ): Input, data= [ 0x02 ] 2
> > Data Variable Absolute No_Wrap Linear
> > Preferred_State No_Null_Position
> > Non_Volatile Bitfield
> > Item(Local ): Usage, data= [ 0x01 ] 1
> > (null)
> > Item(Global): Report Count, data= [ 0x08 ] 8
> > Item(Main ): Output, data= [ 0x02 ] 2
> > Data Variable Absolute No_Wrap Linear
> > Preferred_State No_Null_Position
> > Non_Volatile Bitfield
> > Item(Global): Usage Page, data= [ 0x0c ] 12
> > Consumer
> > Item(Local ): Usage, data= [ 0x00 ] 0
> > Unassigned
> > Item(Global): Logical Minimum, data= [ 0x80 ] 128
> > Item(Global): Logical Maximum, data= [ 0x7f ] 127
> > Item(Global): Report Size, data= [ 0x08 ] 8
> > Item(Global): Report Count, data= [ 0x08 ] 8
> > Item(Main ): Feature, data= [ 0x02 ] 2
> > Data Variable Absolute No_Wrap Linear
> > Preferred_State No_Null_Position
> > Non_Volatile Bitfield
> > Item(Main ): End Collection, data=none
> > Endpoint Descriptor:
> > bLength 7
> > bDescriptorType 5
> > bEndpointAddress 0x82 EP 2 IN
> > bmAttributes 3
> > Transfer Type Interrupt
> > Synch Type None
> > Usage Type Data
> > wMaxPacketSize 0x0008 1x 8 bytes
> > bInterval 10
> > Device Status: 0x0000
> > (Bus Powered)
> >
>
> I am not sure why you C code works and pyusb doesn't, but libusb is
> known to be problematic with HID devices. Maybe you should switch to
> hidapi [1] and its Python binding [2].
>
> [1] http://www.signal11.us/oss/hidapi/
>
> [2] http://mcuee.blogspot.com/2011/04/python-and-usb-hid-device.html
>
> --
> Best Regards,
> Wander Lairson Costa
>
>
> ------------------------------------------------------------------------------
> Virtualization & Cloud Management Using Capacity Planning
> Cloud computing makes use of virtualization - but cloud computing
> also focuses on allowing computing to be delivered as a service.
> http://www.accelacomm.com/jaw/sfnl/114/51521223/
> _______________________________________________
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> pyusb-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/pyusb-users
>
--
Lance R. Vick
__________________________________________________
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__________________________________________________
------------------------------------------------------------------------------
Virtualization & Cloud Management Using Capacity Planning
Cloud computing makes use of virtualization - but cloud computing
also focuses on allowing computing to be delivered as a service.
http://www.accelacomm.com/jaw/sfnl/114/51521223/
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