2012/2/10 Lázaro Morales <laz...@frioclima.com.cu>: > Hello, > > I am testing the pyUSB module with a standard USB Logitech Mouse, my goal > is trying to get a general understanding of the pyUSB module and the USB > standard for use it in a course project in my school. This is the mouse > information: > > Bus 002 Device 002: ID 046d:c018 Logitech, Inc. Optical Wheel Mouse > Device Descriptor: > bLength 18 > bDescriptorType 1 > bcdUSB 2.00 > bDeviceClass 0 (Defined at Interface level) > bDeviceSubClass 0 > bDeviceProtocol 0 > bMaxPacketSize0 8 > idVendor 0x046d Logitech, Inc. > idProduct 0xc018 Optical Wheel Mouse > bcdDevice 43.01 > iManufacturer 1 Logitech > iProduct 2 USB Optical Mouse > iSerial 0 > bNumConfigurations 1 > Configuration Descriptor: > bLength 9 > bDescriptorType 2 > wTotalLength 34 > bNumInterfaces 1 > 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 2 Mouse > iInterface 0 > HID Device Descriptor: > bLength 9 > bDescriptorType 33 > bcdHID 1.11 > bCountryCode 0 Not supported > bNumDescriptors 1 > bDescriptorType 34 Report > wDescriptorLength 52 > 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 0x0005 1x 5 bytes > bInterval 10 > Device Status: 0x0000 > (Bus Powered) > > The HID specification says that before get receiving all data of the mouse > is need initialize it, so I suppose that I should send some request to the > device and then it start with the data transmission. How can this be done? > > I will appreciate so much if someone can help me. >
HID devices are known to be problematic with libusb (Xiaofan always answers this question with much more details than me) and, consequently, pyusb. You might want to give a look at hidapi and its Python binding. These post in Xiaofan's blog may help you [1]. [1] 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/ _______________________________________________ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
