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46 lines
994 B
46 lines
994 B
.. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later |
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.. c:namespace:: RC |
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.. _lirc_set_rec_carrier: |
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************************** |
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ioctl LIRC_SET_REC_CARRIER |
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************************** |
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Name |
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==== |
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LIRC_SET_REC_CARRIER - Set carrier used to modulate IR receive. |
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Synopsis |
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======== |
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.. c:macro:: LIRC_SET_REC_CARRIER |
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``int ioctl(int fd, LIRC_SET_REC_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 that modulates PWM data, in Hz. |
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Description |
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=========== |
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Set receive carrier used to modulate IR PWM pulses and spaces. |
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.. note:: |
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If called together with :ref:`LIRC_SET_REC_CARRIER_RANGE`, this ioctl |
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sets the upper bound frequency that will be recognized by the device. |
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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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