COMEDI_GET_TIMER(3)

💫 COMEDI_GET_TIMER 💫

okay bestie, so this is a page from the Comedi reference, and it lives in section 3 of the manual, iykyk 🎀

✨ NAME ✨

comedi_get_timer — timer info, and yeah, it's deprecated 🫠

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✨ SYNOPSIS ✨

#include <comedilib.h>

int comedi_get_timer(comedi_t * device, unsigned int subdevice,
                     double frequency, unsigned int * trigvar,
                     double * actual_frequency);

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✨ STATUS ✨

deprecated 💀 no cap, she's retired.

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✨ DESCRIPTION ✨

So comedi_get_timer takes the frequency frequency and converts it into a number that's suitable to hand over to the driver inside a comedi_trig structure. cute, right? 🌸

here's the thing though — this function is still kicking around purely for compatibility with very old versions of Comedi, the ones that did the whole sampling-rate-to-timer-value conversion inside the library. that conversion? she moved 🚚 the kernel does it now.

and because the kernel is handling it, every single device has the timer type nanosec_timer, which literally just means the timer values are a time specified in nanoseconds ⏱️ periodt, that's the whole deal.

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✨ AUTHORS ✨

these icons built it 👑

• 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

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.

🫶 just a lil reminder: that "no warranty" bit is doing real work, so don't come for the authors if it misbehaves bestie.

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okay that's the whole page, mwah 💅 this one's from the Comedi reference, dated 03/20/2026, and it's filed as COMEDI_GET_TIMER(3) in section three. stay hydrated, go read the kernel docs if you wanna know how the timer thing actually works now 💖✨🦋