Documentation/media/uapi/rc/lirc-set-measure-carrier-mode.rst

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.. 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/media/uapi/fdl-appendix.rst.
..
.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections

.. _lirc_set_measure_carrier_mode:

***********************************
ioctl LIRC_SET_MEASURE_CARRIER_MODE
***********************************

Name
====

LIRC_SET_MEASURE_CARRIER_MODE - enable or disable measure mode

Synopsis
========

.. c:function:: int ioctl( int fd, LIRC_SET_MEASURE_CARRIER_MODE, __u32 *enable )
    :name: LIRC_SET_MEASURE_CARRIER_MODE

Arguments
=========

``fd``
    File descriptor returned by open().

``enable``
    enable = 1 means enable measure mode, enable = 0 means disable measure
    mode.


Description
===========

.. _lirc-mode2-frequency:

Enable or disable measure mode. If enabled, from the next key
press on, the driver will send ``LIRC_MODE2_FREQUENCY`` packets. By
default this should be turned off.


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.