mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
49 lines
1.1 KiB
49 lines
1.1 KiB
.. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later |
|
.. c:namespace:: RC |
|
|
|
.. _lirc_set_rec_carrier_range: |
|
|
|
******************************** |
|
ioctl LIRC_SET_REC_CARRIER_RANGE |
|
******************************** |
|
|
|
Name |
|
==== |
|
|
|
LIRC_SET_REC_CARRIER_RANGE - Set lower bound of the carrier used to modulate |
|
IR receive. |
|
|
|
Synopsis |
|
======== |
|
|
|
.. c:macro:: LIRC_SET_REC_CARRIER_RANGE |
|
|
|
``int ioctl(int fd, LIRC_SET_REC_CARRIER_RANGE, __u32 *frequency)`` |
|
|
|
Arguments |
|
========= |
|
|
|
``fd`` |
|
File descriptor returned by open(). |
|
|
|
``frequency`` |
|
Frequency of the carrier that modulates PWM data, in Hz. |
|
|
|
Description |
|
=========== |
|
|
|
This ioctl sets the upper range of carrier frequency that will be recognized |
|
by the IR receiver. |
|
|
|
.. note:: |
|
|
|
To set a range use :ref:`LIRC_SET_REC_CARRIER_RANGE |
|
<LIRC_SET_REC_CARRIER_RANGE>` with the lower bound first and later call |
|
:ref:`LIRC_SET_REC_CARRIER <LIRC_SET_REC_CARRIER>` with the upper bound. |
|
|
|
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.
|
|
|