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57 lines
1.4 KiB
57 lines
1.4 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_get_min_timeout: |
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.. _lirc_get_max_timeout: |
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**************************************************** |
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ioctls LIRC_GET_MIN_TIMEOUT and LIRC_GET_MAX_TIMEOUT |
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**************************************************** |
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Name |
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==== |
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LIRC_GET_MIN_TIMEOUT / LIRC_GET_MAX_TIMEOUT - Obtain the possible timeout |
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range for IR receive. |
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Synopsis |
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======== |
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.. c:macro:: LIRC_GET_MIN_TIMEOUT |
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``int ioctl(int fd, LIRC_GET_MIN_TIMEOUT, __u32 *timeout)`` |
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.. c:macro:: LIRC_GET_MAX_TIMEOUT |
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``int ioctl(int fd, LIRC_GET_MAX_TIMEOUT, __u32 *timeout)`` |
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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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``timeout`` |
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Timeout, in microseconds. |
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Description |
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=========== |
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Some devices have internal timers that can be used to detect when |
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there's no IR activity for a long time. This can help lircd in |
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detecting that a IR signal is finished and can speed up the decoding |
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process. Returns an integer value with the minimum/maximum timeout |
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that can be set. |
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.. note:: |
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Some devices have a fixed timeout, in that case |
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both ioctls will return the same value even though the timeout |
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cannot be changed via :ref:`LIRC_SET_REC_TIMEOUT`. |
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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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