47 lines
952 B
ReStructuredText
47 lines
952 B
ReStructuredText
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.. -*- coding: utf-8; mode: rst -*-
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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:function:: int ioctl( int fd, LIRC_SET_REC_CARRIER, __u32 *frequency )
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:name: LIRC_SET_REC_CARRIER
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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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