Based on kernel version 6.11
. Page generated on 2024-09-24 08:21 EST
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 | .. 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. |