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51 lines
1.3 KiB
51 lines
1.3 KiB
.. 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_transmitter_mask: |
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******************************* |
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ioctl LIRC_SET_TRANSMITTER_MASK |
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******************************* |
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Name |
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==== |
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LIRC_SET_TRANSMITTER_MASK - Enables send codes on a given set of transmitters |
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Synopsis |
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======== |
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.. c:macro:: LIRC_SET_TRANSMITTER_MASK |
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``int ioctl(int fd, LIRC_SET_TRANSMITTER_MASK, __u32 *mask)`` |
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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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``mask`` |
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Mask with channels to enable tx. Channel 0 is the least significant bit. |
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Description |
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=========== |
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Some IR TX devices have multiple output channels, in such case, |
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:ref:`LIRC_CAN_SET_TRANSMITTER_MASK <LIRC-CAN-SET-TRANSMITTER-MASK>` is |
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returned via :ref:`LIRC_GET_FEATURES` and this ioctl sets what channels will |
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send IR codes. |
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This ioctl enables the given set of transmitters. The first transmitter is |
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encoded by the least significant bit and so on. |
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When an invalid bit mask is given, i.e. a bit is set, even though the device |
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does not have so many transitters, then this ioctl returns the number of |
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available transitters and does nothing otherwise. |
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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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