where to get info to write basic usb driver for own device?

[Aho K.F. Li]

What kind of device do you had build?
A HID?
If your device is not with heaven traffic, you can consider to
develop your driver at user space with ugen(4) or uhid(4) at first.
And then, move it into kernel space when you need.
I had wrote a drive for a touch panel device.
Actually, it is a input device for XFree86.
I worked it with uhid(4), all my work was finished at user space.
It would be a good entry point.


idownes at slingshot.co.nz wrote:

>Hi all,
>As part of my uni honours project I need to write a basic USB driver for a 
>device I am building.  I need to talk to a Texas Instruments DSP (C5509) 
>which has on chip USB (2.0 compliant, full speed).  TI supply a library 
>for the DSP side of the USB but I need to write a basic program to 
>retrieve data from it, nothing fancy at all.  I have full control over the 
>software on the DSP.
>There is a basic generic Windows driver I could use (theyscon.de) but I 
>don't really want to do it under Windows - instead I'd much rather do it 
>with FreeBSD.  
>
>So what I guess what I am asking is how hard would this be? (I have a 
>reasonable knowledge of C and Java and have been using FreeBSD for a 
>couple of years but have never written a device driver (for any OS))  Do I 
>actually need to write a driver or can I use something already existing?  
>Where would I get information on how to do this?  So far I've been looking 
>at the existing drivers; ugen, ufm etc., the programmers handbook and am 
>starting to look at libusb...?
>Sorry for the long message.  Any pointers etc. would be greatly 
>appreciated.
>Thanks
>Ian
>
>
>
>
>_______________________________________________
>freebsd-hackers at freebsd.org mailing list
>http://lists.freebsd.org/mailman/listinfo/freebsd-hackers
>To unsubscribe, send any mail to "freebsd-hackers-unsubscribe at freebsd.org"
>
>
>  
>