COMEDI_SET_COUNTER_M(3)

💖 COMEDI_SET_COUNTER_M(3) 💖

okay bestie, welcome to the Comedi reference section of the manual — this one's all about comedi_set_counter_mode, and yes it's giving "niche but iconic" energy. let's get into it 🎀

---

✨ NAME ✨

comedi_set_counter_mode — change mode of a counter subdevice 🌀

---

🌸 SYNOPSIS 🌸

#include <comedilib.h>

int comedi_set_counter_mode(comedi_t * device, unsigned int subdevice,
                            unsigned int channel, unsigned int mode);

like. look at her. four little args and a dream 💅

---

🦋 STATUS 🦋

alpha

yeah she's still in her alpha era, just so you know what you're getting into 🙈

---

👑 DESCRIPTION 👑

so what this function actually does is configure a counter subdevice. that's the whole vibe ✨

the meaning of the mode parameter? driver-dependent, no cap. it's not a universal thing, it's whatever your driver decided it means.

and here's the tea: if the subdevice does not support configuring its mode on a per-channel basis, then the channel parameter will be ignored. literally just sitting there, unread, being decorative 💀

⚠️ important: this function is only useable on subdevices that provide support for the INSN_CONFIG_SET_COUNTER_MODE configuration instruction. if your subdevice doesn't have that, bestie, it's not happening.

---

🔥 RETURN VALUE 🔥

• 0 on success — slay 🎉
• -1 on error — rip 😭

---

💜 AUTHORS 💜

these are the legends who made it happen, show some respect 🫶

• 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.

---

🌈 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.

🎀 no warranty bestie, that's the deal — LGPL 2.1 said what it said

---

and that's the whole page!! sourced from Comedi, dated 03/20/2026, filed under COMEDI_SET_COUNTER_M(3) 🦋 mwah, go configure a counter, you got this ✨💖