.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
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.. c:namespace:: RC
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.. _lirc_set_send_carrier:
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***************************
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ioctl LIRC_SET_SEND_CARRIER
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***************************
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Name
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====
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LIRC_SET_SEND_CARRIER - Set send carrier used to modulate IR TX.
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Synopsis
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========
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.. c:macro:: LIRC_SET_SEND_CARRIER
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``int ioctl(int fd, LIRC_SET_SEND_CARRIER, __u32 *frequency)``
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Arguments
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=========
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``fd``
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File descriptor returned by open().
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``frequency``
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Frequency of the carrier to be modulated, in Hz.
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Description
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===========
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Set send carrier used to modulate IR PWM pulses and spaces.
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Return Value
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============
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On success 0 is returned, on error -1 and the ``errno`` variable is set
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appropriately. The generic error codes are described at the
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:ref:`Generic Error Codes <gen-errors>` chapter.
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