COMEDI_DIGITAL_TRIGG(3)

💅 COMEDI_DIGITAL_TRIGG(3) — the Comedi reference, section 3, bestie edition ✨

okay so. you found the comedi_digital_trigger_disable page and honestly?? iconic of you. this is a section-3 manual page from the Comedi reference, and we're gonna go through the whole thing together, no skips, no shortcuts, because every single line here matters. 🫶

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🌸 NAME 🌸

comedi_digital_trigger_disable — disable a digital trigger. that's it, that's the whole vibe. you're turning a trigger OFF. periodt.

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🎀 SYNOPSIS 🎀

first things first, you gotta pull in the header:

#include <comedilib.h>

and here's the whole function signature, exactly as it is, do not freestyle this:

int comedi_digital_trigger_disable(comedi_t * device,
                                   unsigned int subdevice,
                                   unsigned int trigger_id);

three things you're handing over: a comedi_t * called device, an unsigned int called subdevice, and an unsigned int called trigger_id. that's the whole shopping list. 🛍️

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⭐ STATUS ⭐

alpha

like… it works, it's out here living its life, but it's giving "baby stage" energy. treat it accordingly. 🙈

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💜 DESCRIPTION 💜

so what does this actually DO. this function disables a digital trigger on a subdevice, and when it does that, it returns the trigger to its default, inactive, unconfigured state. back to factory settings. clean slate. the trigger is just… chillin. not triggering.

and if your subdevice is one of those overachiever subdevices that supports several digital triggers at once? then the trigger_id is what picks which one you're turning off. it's basically a "which one, bestie" selector. 🎯

big important caveat: this function is only useable on subdevices that provide support for the INSN_CONFIG_DIGITAL_TRIG configuration instruction. if your subdevice doesn't speak that language, this whole thing is not gonna work out, ngl.

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✨ RETURN VALUE ✨

• 0 on success — slay, it worked 💖
• -1 on error — not slay, something went wrong 😭

that's the whole range. zero or minus one. no in-between, no "kinda worked". binary queen.

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👑 AUTHORS 👑

these are the people who made this happen, and we are obsessed with them, fr fr:

• David Schleef <ds@schleef.org> — Author.
• Frank Mori Hess <fmhess@users.sourceforge.net> — Author.
• Herman Bruyninckx <Herman.Bruyninckx@mech.kuleuven.ac.be> — Author.
• Bernd Porr <tech@linux-usb-daq.co.uk> — Author.
• Ian Abbott <abbotti@mev.co.uk> — Author.
• Éric Piel <piel@delmic.com> — Author.

legends, all of them. 🫡

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🌈 COPYRIGHT 🌈

the receipts, verbatim, because we respect the paperwork:

Copyright © 1998-2003 David Schleef

Copyright © 2001-2003, 2005, 2008 Frank Mori Hess

Copyright © 2002-2003 Herman Bruyninckx

Copyright © 2012 Bernd Porr

Copyright © 2012 Ian Abbott

Copyright © 2012, 2015 Éric Piel

okay so now the license part, and this is important so read it properly:

This document is part of Comedilib. In the context of this document, the term "source code" as defined by the license is interpreted as the XML source.

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, version 2.1 of the License.

This library 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 Lesser General Public License for more details.

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

no warranty, bestie. none. zero. nada. if it breaks, that's between you and the universe. 💀

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and that's the whole page!! 🦋 this came from the Comedi source, version info dated 03/20/2026, living under the title COMEDI_DIGITAL_TRIGG(3). go forth and disable those digital triggers responsibly. mwah. 💅✨🎀