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.. _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.
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