COMEDI_FIND_SUBDEVIC(3)

✨ COMEDI_FIND_SUBDEVIC_BY_TYPE ✨

okay bestie, so this is a page from the Comedi reference (that's the Comedi manual, section 3, for the comedilib girlies) 💅 and it's about one very specific little function that goes looking for subdevices. let's get into it 🦋

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🌸 NAME 🌸

comedi_find_subdevice_by_type — search for subdevice type 🔍

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💖 SYNOPSIS 💖

#include <comedilib.h>

int comedi_find_subdevice_by_type(comedi_t * device, int type,
                                  unsigned int start_subdevice);

like. she's tiny. three args. no cap. 💫

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🎀 DESCRIPTION 🎀

so comedi_find_subdevice_by_type is out here trying to locate a subdevice 📍 that belongs to the comedi device device — and not just any subdevice, bestie, one that has type type, and she starts her lil search from the subdevice start_subdevice and goes from there. so considerate.

and the comedi_subdevice_type enum is what tells you all the possible subdevice types you can ask for. that's the menu. pick your fighter 💅

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👑 RETURN VALUE 👑

if she finds a subdevice with the requested type? she hands you its index 🎁 iconic behaviour, honestly.

if there's an error? she returns -1 and sets the appropriate error. so like... check that return value, bestie, don't just vibe blindly 😭

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🫶 AUTHORS 🫶

• 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.

the whole squad fr fr 🧚✨

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🌈 COPYRIGHT 🌈

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

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.

okay real talk for one sec — that "WITHOUT ANY WARRANTY" bit is not a vibe, it's a fact. no promises, bestie. read the license. 💀

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and that's the whole page, babes 🎀 this was Comedi, dated 03/20/2026, and the manual page is COMEDI_FIND_SUBDEVIC(3) — go find those subdevices, you got this 🫶💜