Date: Tue, 20 Dec 2016 13:15:02 -0500 From: George Mitchell <george+freebsd@m5p.com> To: freebsd-hackers@freebsd.org Subject: Re: USB ppbus? Message-ID: <c34b2afa-8123-80ce-a925-856b0bfe8621@m5p.com> In-Reply-To: <930e14f6-d8a8-7f50-21b4-6e76c2057f31@selasky.org> References: <35e62a59-556a-68bf-3b9d-017108f12f38@m5p.com> <930e14f6-d8a8-7f50-21b4-6e76c2057f31@selasky.org>
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On 12/20/16 12:57, Hans Petter Selasky wrote: > On 12/19/16 20:19, George Mitchell wrote: >> I have a USB cable that terminates in a DB25 connector. Inside is a >> Prolific Technology PL2305: >> http://prolificusa.com/files/ds_pl2305I_v1.0.pdf >> It probes as a ulpt. I would love if there existed such a thing as >> a uppi device. Does it sound possible to get to such a result by >> extending the ppbus code to know about USB? Or might it be simpler >> to try to add the ppi ioctls (PPIGDATA, etc.) to ulpt.c? -- George > > Hi George, > > There is currently no such thing. ulpt only provides a raw character > device. The ppbus could possibly be implemented in userspace using libcuse. > > --HPS > > [...] Thanks for the response. I think I could kludge the ioctls I want into ulpt.c by learning more about the USB system works. Possibly. On a good day. -- George
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