COMEDI_GET_N_CHANNEL(3)

💖 COMEDI_GET_N_CHANNEL 💖

okay so bestie, welcome to the COMEDI_GET_N_CHANNEL(3) page of the Comedi reference manual — yes, that's the whole name, we're doing the full title thing today ✨ and it is genuinely so simple you're gonna be obsessed.

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🎀 NAME 🎀

comedi_get_n_channels — telling you how many channels a subdevice has, no cap 💅

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🦋 SYNOPSIS 🦋

#include <comedilib.h>

int comedi_get_n_channels(comedi_t * device, unsigned int subdevice);

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🌸 DESCRIPTION 🌸

so like, comedi_get_n_channels returns the number of channels that the subdevice subdevice has. that subdevice belongs to the comedi device device, iykyk 🫶

and if something goes wrong? bestie it returns -1 and the Comedilib error value gets set. that's the whole vibe check right there. periodt 💀

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👑 AUTHORS 👑

the iconic legends who made this happen, give them their flowers 💐:

• 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.

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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

so this document is part of Comedilib, okay? and in the context of this document specifically, when the license says "source code" it means the XML source. just so we're clear 💅

ngl 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. slay, that's the deal ✨

⚠️ important bestie, read this part fr fr — 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. no cap, it's literally right there in the license 😭

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 💌

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🫶 and that's the page! this delight was served up by the Comedi crew on 03/20/2026, and you've been reading COMEDI_GET_N_CHANNEL(3) — go count some channels, main character 💅✨💖