54 lines
1.3 KiB
ReStructuredText
54 lines
1.3 KiB
ReStructuredText
.. Permission is granted to copy, distribute and/or modify this
|
|
.. document under the terms of the GNU Free Documentation License,
|
|
.. Version 1.1 or any later version published by the Free Software
|
|
.. Foundation, with no Invariant Sections, no Front-Cover Texts
|
|
.. and no Back-Cover Texts. A copy of the license is included at
|
|
.. Documentation/userspace-api/media/fdl-appendix.rst.
|
|
..
|
|
.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
|
|
|
|
.. _lirc_set_rec_carrier:
|
|
|
|
**************************
|
|
ioctl LIRC_SET_REC_CARRIER
|
|
**************************
|
|
|
|
Name
|
|
====
|
|
|
|
LIRC_SET_REC_CARRIER - Set carrier used to modulate IR receive.
|
|
|
|
|
|
Synopsis
|
|
========
|
|
|
|
.. c:function:: int ioctl( int fd, LIRC_SET_REC_CARRIER, __u32 *frequency )
|
|
:name: LIRC_SET_REC_CARRIER
|
|
|
|
Arguments
|
|
=========
|
|
|
|
``fd``
|
|
File descriptor returned by open().
|
|
|
|
``frequency``
|
|
Frequency of the carrier that modulates PWM data, in Hz.
|
|
|
|
Description
|
|
===========
|
|
|
|
Set receive carrier used to modulate IR PWM pulses and spaces.
|
|
|
|
.. note::
|
|
|
|
If called together with :ref:`LIRC_SET_REC_CARRIER_RANGE`, this ioctl
|
|
sets the upper bound frequency that will be recognized by the device.
|
|
|
|
|
|
Return Value
|
|
============
|
|
|
|
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
|
appropriately. The generic error codes are described at the
|
|
:ref:`Generic Error Codes <gen-errors>` chapter.
|