1 .. SPDX-License-Identifier: GPL-2.0 OR GFDL-1. 1 .. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later
2 .. c:namespace:: RC 2 .. c:namespace:: RC
3 3
4 .. _lirc_set_rec_carrier_range: 4 .. _lirc_set_rec_carrier_range:
5 5
6 ******************************** 6 ********************************
7 ioctl LIRC_SET_REC_CARRIER_RANGE 7 ioctl LIRC_SET_REC_CARRIER_RANGE
8 ******************************** 8 ********************************
9 9
10 Name 10 Name
11 ==== 11 ====
12 12
13 LIRC_SET_REC_CARRIER_RANGE - Set lower bound o 13 LIRC_SET_REC_CARRIER_RANGE - Set lower bound of the carrier used to modulate
14 IR receive. 14 IR receive.
15 15
16 Synopsis 16 Synopsis
17 ======== 17 ========
18 18
19 .. c:macro:: LIRC_SET_REC_CARRIER_RANGE 19 .. c:macro:: LIRC_SET_REC_CARRIER_RANGE
20 20
21 ``int ioctl(int fd, LIRC_SET_REC_CARRIER_RANGE 21 ``int ioctl(int fd, LIRC_SET_REC_CARRIER_RANGE, __u32 *frequency)``
22 22
23 Arguments 23 Arguments
24 ========= 24 =========
25 25
26 ``fd`` 26 ``fd``
27 File descriptor returned by open(). 27 File descriptor returned by open().
28 28
29 ``frequency`` 29 ``frequency``
30 Frequency of the carrier that modulates PW 30 Frequency of the carrier that modulates PWM data, in Hz.
31 31
32 Description 32 Description
33 =========== 33 ===========
34 34
35 This ioctl sets the upper range of carrier fre 35 This ioctl sets the upper range of carrier frequency that will be recognized
36 by the IR receiver. 36 by the IR receiver.
37 37
38 .. note:: 38 .. note::
39 39
40 To set a range use :ref:`LIRC_SET_REC_CARRI 40 To set a range use :ref:`LIRC_SET_REC_CARRIER_RANGE
41 <LIRC_SET_REC_CARRIER_RANGE>` with the lowe 41 <LIRC_SET_REC_CARRIER_RANGE>` with the lower bound first and later call
42 :ref:`LIRC_SET_REC_CARRIER <LIRC_SET_REC_CA 42 :ref:`LIRC_SET_REC_CARRIER <LIRC_SET_REC_CARRIER>` with the upper bound.
43 43
44 Return Value 44 Return Value
45 ============ 45 ============
46 46
47 On success 0 is returned, on error -1 and the 47 On success 0 is returned, on error -1 and the ``errno`` variable is set
48 appropriately. The generic error codes are des 48 appropriately. The generic error codes are described at the
49 :ref:`Generic Error Codes <gen-errors>` chapte 49 :ref:`Generic Error Codes <gen-errors>` chapter.
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