channel_range.h File Reference

Analogy for Linux, channel, range related features. More...

#include <rtdm/uapi/analogy.h>

Go to the source code of this file.

Data Structures
struct	a4l_channel
	Structure describing some channel's characteristics. More...
struct	a4l_channels_desc
	Structure describing a channels set. More...
struct	a4l_range
	Structure describing a (unique) range. More...

Macros
#define	A4L_CHAN_GLOBAL   0x10
	Internal use flag (must not be used by driver developer)
#define	A4L_RNG_GLOBAL   0x8
	Internal use flag (must not be used by driver developer)
#define	RANGE(x, y)
	Macro to declare a (unique) range with no unit defined.
#define	RANGE_V(x, y)
	Macro to declare a (unique) range in Volt.
#define	RANGE_mA(x, y)
	Macro to declare a (unique) range in milliAmpere.
#define	RANGE_ext(x, y)
	Macro to declare a (unique) range in some external reference.
#define	A4L_RNG_GLOBAL_RNGDESC   0
	Constant to define a ranges descriptor as global (inter-channel)
#define	A4L_RNG_PERCHAN_RNGDESC   1
	Constant to define a ranges descriptor as specific for a channel.
#define	RNG_GLOBAL(x)
	Macro to declare a ranges global descriptor in one line.
Channel reference
Flags to define the channel's reference
#define	A4L_CHAN_AREF_GROUND   0x1
	Ground reference.
#define	A4L_CHAN_AREF_COMMON   0x2
	Common reference.
#define	A4L_CHAN_AREF_DIFF   0x4
	Differential reference.
#define	A4L_CHAN_AREF_OTHER   0x8
	Misc reference.
Channels declaration mode
Constant to define whether the channels in a descriptor are identical
#define	A4L_CHAN_GLOBAL_CHANDESC   0
	Global declaration, the set contains channels with similar characteristics.
#define	A4L_CHAN_PERCHAN_CHANDESC   1
	Per channel declaration, the decriptor gathers differents channels.

Detailed Description

Analogy for Linux, channel, range related features.

Copyright (C) 1997-2000 David A. Schleef ds@sc.nosp@m.hlee.nosp@m.f.org Copyright (C) 2008 Alexis Berlemont alexi.nosp@m.s.be.nosp@m.rlemo.nosp@m.nt@f.nosp@m.ree.f.nosp@m.r

Xenomai is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

Xenomai is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with Xenomai; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.