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Date: Sun, 30 Sep 2007 17:51:26 +0200
From: Jan Kiszka <jan.kiszka@domain.hid>
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Subject: Re: [Xenomai-help] rtdm driver development
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To: Bachman Kharazmi <bahkha@domain.hid>
Cc: Xenomai <xenomai@xenomai.org>

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Bachman Kharazmi wrote:
> Hi
> I've implemented a ringbuffer which will buffer strings between a
> pipe-read-task=3D>[buffer]=3D>rtdm-rtserial-writetask
>=20
> The buffer has been implemented in userland and it works.
> But in kernelspace (everything in a loaded in a kernel-module) things
> doesn't work. It's the put(token) which doesn't work.
> The function is put(char* c){ ... }
>=20
> I've heard that there's an address difference. But how do I handle that=
?
>=20
> http://www.xenomai.org/documentation/trunk/html/api/group__util.html#g9=
ce418051ccb7dd2366128efb8674262
> is rtdm_strncpy_from_user() something I should use?
>=20
> exactlly what is: rtdm_user_info_t *  else than a pointer?
> Where do I declare it? There's no clickable link in the api for that th=
at type..
>=20
> The description sais: "User information pointer as passed to the
> invoked device operation handler"
> ...

Please have a look at xenomai/examples/rtdm/driver-api. Those tutorial
may give you some ideas. Feel free to suggest better descriptions of
that field above.

Jan


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