Comedi standalone Linux kernel modules
C M4 Objective-C Makefile Shell Perl Other
Latest commit 1881165 Jan 26, 2017 @ian-abbott ian-abbott ni_daq_700: set SDF_CMD_READ in subdev_700_init_irq()
Since subdev_700_init_irq() sets up handlers for an asynchronous command
in the "read" direction, set the SDF_CMD_READ subdevice flag.  Otherwise
postconfig() in "drivers.c" would hit a BUG_ON() condition.

Signed-off-by: Ian Abbott <>
Failed to load latest commit information.
Documentation/comedi Hardware_Driver.HOWTO: Add a not about updating the dkms.conf file Jun 22, 2015
comedi ni_daq_700: set SDF_CMD_READ in subdev_700_init_irq() Jan 26, 2017
inc-wrap inc-wrap/linux/interrupt.h: change test for IRQF_... macros Jun 16, 2015
include comedi.h: replace bare 'unsigned' with 'unsigned int' May 16, 2016
m4 m4/as-linux.m4: Replace use of /lib/cpp with $CPP Oct 20, 2016
patches Remove old SCXI patches for ni_mio_common Aug 13, 2013
scripts Allow "*" (optionally surrounded by a space on each side) to precede Jun 14, 2010
.gitignore .gitignore: Ignore the file 'missing'. May 10, 2011
AUTHORS Added Maxime Chevallier Feb 27, 2015
COPYING named GPL file COPYING instead of LICENSE May 1, 2001
ChangeLog regenerated ChangeLog with "cvs2cl -T" Jan 28, 2008
ChangeLog-0.7 * ChangeLog-0.7: Move ChangeLog to ChangeLog-0.7, and start Apr 8, 2005
INSTALL INSTALL: Changed reference to cvs to git. May 10, 2011 Moved kernel compatibility wrapper header files Aug 12, 2013
NEWS Use autoreconf. Add files Apr 2, 2005
README README: Migrated git repositories to Sep 19, 2016
README.Git README.CVS: Renamed to README.Git and edited slightly May 10, 2011
TODO Removed Documentation/ and Documentation/… Aug 11, 2006 simplified Jul 31, 2007 Rename CONFIG_COMEDI and COMEDI_HAVE macros Aug 13, 2013
dkms.conf dkms.conf: Bump date on PACKAGE_VERSION Sep 23, 2015


    The Linux Control and Measurement Device Interface
    David Schleef <>

* About Comedi:

Comedi is a collection of drivers for data acquisition hardware.
These drivers work with Linux, and also with Linux combined with
the real-time extensions RTAI and RTLinux.  The Comedi core, which
ties all the driver together, allows applications to be written
that are completely hardware independent.

Comedi supports a variety of data acquisition hardware; an
incomplete list can be found in Documentation/comedi/drivers.txt.

This distribution contains just the Comedi kernel modules.  You will
almost certainly also want to download Comedilib, which is a user
space library, a few utilities, and some example programs.

* Installation:

For installation instructions, look at the file INSTALL.

* Mailing List:

Questions about Comedi should be sent to the Comedi mailing list,
<>.  It is necessary to join the group
before posting (see below).  It is also possible to post to the list
using the web interface (see below).  Mailing the maintainer
directly is always acceptable, but since the mailing list is
archived and questions are often answered more quickly by others,
the mailing list is preferred.

To subscribe to and unsubscribe from the mailing list, or to read or
post messages via the web interface, go to
<>.  Alternatively, you
can send a blank email to <>
to subscribe, or to <> to
unsubscribe (making sure the "From:" email address matches the
address you originally subscribed with!).

Traffic on the list is light, and mainly questions/answers about
comedi installation, bugs, and programming.  General questions
about data acquisition are also welcome.

* More Information:

Comedi also has a web page at <> from where
updated versions may be downloaded.

Often bugfixes and new features that are not in the current release
can be found in the Git repository.  Git snapshots can be created
automatically at
The Git repository can be accessed anonymously using:

  git clone

The Git repository was previously hosted at  A previously
cloned repository may need its URL updating to the current repository
on as follows:

  cd /path/to/comedi
  git remote set-url origin

Comedi may be freely distributed and modified in accordance with the
GNU General Public License.

The person behind all this misspelled humor is David Schleef