Writing a USB driver for a non working device

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Hi,

I am newbie. For the better understanding of the USB, i have decided write a USB driver for the device for which it works in windows but not in linux.�So i have picked the Logitech USB headset.

The background i have is ,i have studied the ldd usb drivers and written few dummy USB driver.

Before i start implementing, i made some basic study
- on connecting the device to my Ubuntu desktop, lsusb shows
� � �Bus 002 Device 065: ID 046d:0a01 Logitech, Inc. USB Headset

on issuing dmesg.
� �[550289.589037] usb 2-1.6: new full speed USB device using ehci_hcd and address 66


- so i believe there should be some driver already existing, is my understanding right?
- if not, where can i start for implementing a new driver of my own?
� � � I think i need �start doing some reverse engineering on windows using some usb logging tool, for the understanding of working of the device


Thanks,
Madav Raman

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