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.. Permission is granted to copy, distribute and/or modify this
.. document under the terms of the GNU Free Documentation License,
.. Version 1.1 or any later version published by the Free Software
.. Foundation, with no Invariant Sections, no Front-Cover Texts
.. and no Back-Cover Texts. A copy of the license is included at
.. Documentation/media/uapi/fdl-appendix.rst.
.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
.. _lirc_set_send_duty_cycle:
LIRC_SET_SEND_DUTY_CYCLE - Set the duty cycle of the carrier signal for
IR transmit.
.. c:function:: int ioctl( int fd, LIRC_SET_SEND_DUTY_CYCLE, __u32 *duty_cycle)
File descriptor returned by open().
Duty cicle, describing the pulse width in percent (from 1 to 99) of
the total cycle. Values 0 and 100 are reserved.
Get/set the duty cycle of the carrier signal for IR transmit.
Currently, no special meaning is defined for 0 or 100, but this
could be used to switch off carrier generation in the future, so
these values should be reserved.
Return Value
On success 0 is returned, on error -1 and the ``errno`` variable is set
appropriately. The generic error codes are described at the
:ref:`Generic Error Codes <gen-errors>` chapter.