57 lines
1.5 KiB
ReStructuredText
57 lines
1.5 KiB
ReStructuredText
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.. 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_wideband_receiver:
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********************************
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ioctl LIRC_SET_WIDEBAND_RECEIVER
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********************************
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Name
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====
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LIRC_SET_WIDEBAND_RECEIVER - enable wide band receiver.
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Synopsis
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========
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.. c:macro:: LIRC_SET_WIDEBAND_RECEIVER
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``int ioctl(int fd, LIRC_SET_WIDEBAND_RECEIVER, __u32 *enable)``
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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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``enable``
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enable = 1 means enable wideband receiver, enable = 0 means disable
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wideband receiver.
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Description
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===========
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Some receivers are equipped with special wide band receiver which is
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intended to be used to learn output of existing remote. This ioctl
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allows enabling or disabling it.
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This might be useful of receivers that have otherwise narrow band receiver
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that prevents them to be used with some remotes. Wide band receiver might
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also be more precise. On the other hand its disadvantage it usually
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reduced range of reception.
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.. note::
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Wide band receiver might be implictly enabled if you enable
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carrier reports. In that case it will be disabled as soon as you disable
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carrier reports. Trying to disable wide band receiver while carrier
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reports are active will do nothing.
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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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