xref: /OK3568_Linux_fs/kernel/Documentation/userspace-api/media/rc/lirc-set-send-carrier.rst (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1*4882a593Smuzhiyun.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2*4882a593Smuzhiyun.. c:namespace:: RC
3*4882a593Smuzhiyun
4*4882a593Smuzhiyun.. _lirc_set_send_carrier:
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun***************************
7*4882a593Smuzhiyunioctl LIRC_SET_SEND_CARRIER
8*4882a593Smuzhiyun***************************
9*4882a593Smuzhiyun
10*4882a593SmuzhiyunName
11*4882a593Smuzhiyun====
12*4882a593Smuzhiyun
13*4882a593SmuzhiyunLIRC_SET_SEND_CARRIER - Set send carrier used to modulate IR TX.
14*4882a593Smuzhiyun
15*4882a593SmuzhiyunSynopsis
16*4882a593Smuzhiyun========
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun.. c:macro:: LIRC_SET_SEND_CARRIER
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun``int ioctl(int fd, LIRC_SET_SEND_CARRIER, __u32 *frequency)``
21*4882a593Smuzhiyun
22*4882a593SmuzhiyunArguments
23*4882a593Smuzhiyun=========
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun``fd``
26*4882a593Smuzhiyun    File descriptor returned by open().
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun``frequency``
29*4882a593Smuzhiyun    Frequency of the carrier to be modulated, in Hz.
30*4882a593Smuzhiyun
31*4882a593SmuzhiyunDescription
32*4882a593Smuzhiyun===========
33*4882a593Smuzhiyun
34*4882a593SmuzhiyunSet send carrier used to modulate IR PWM pulses and spaces.
35*4882a593Smuzhiyun
36*4882a593SmuzhiyunReturn Value
37*4882a593Smuzhiyun============
38*4882a593Smuzhiyun
39*4882a593SmuzhiyunOn success 0 is returned, on error -1 and the ``errno`` variable is set
40*4882a593Smuzhiyunappropriately. The generic error codes are described at the
41*4882a593Smuzhiyun:ref:`Generic Error Codes <gen-errors>` chapter.
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