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.. -*- coding: utf-8; mode: rst -*-
.. _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.
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