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Re: mouse driver



Why do you think that you need your own driver? In any case, the

This is for a high-performance, game oriented mouse - the thought was that in order to get the best performance that we should roll our own driver.

IOUSBHIDDriver is the driver for any mouse device. The AppleUSBOpticalMouse is just a vendor-specific driver that issues some commands to the driver. I would try to make your device work with the HID driver. Use the HID lib to communicate with your device from user space.

We also intend on having a preferences panel for controlling the parameters for the mouse - so, in theory, utilizing the default HID driver may serve our purposes? Assuming we do roll our own driver, would we subclass IOUSBHIDDriver or IOHIPointing, and would we need our own user client class for that?

Thanks!


--
Fernando Urbina
USB Technology Team
Apple Computer, Inc.

On Jun 14, 2005, at 11:39 AM, Jeff Schindler wrote:

We are writing a device driver for a USB mouse. First off, from everything I've read (yes, I've read all the pertinent docs), it appears an in-kernel driver is the way to go. Looking at the Darwin source, it looks as though a good starting point would be AppleUSBOpticalMouse (ie subclassing IOUSBHIDDriver). I first considered the AppleUSBMouse class and subclassing IOHIPointing from the HID family, but then I noticed that AppleUSBMouse is obsolete and has been for some time (did AppleUSBOpticalMouse replace this?). Which is the best approach? Also, I assume I would need my own user client for user space communication (as opposed to using an existing user client) - is there a good starting point for that? Sorry for the newbi-ness of the questions - this is all new to me.





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 >Re: mouse driver (From: Fernando Urbina <email@hidden>)



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