1 .. Permission is granted to copy, distribute and/or modify this
2 .. document under the terms of the GNU Free Documentation License,
3 .. Version 1.1 or any later version published by the Free Software
4 .. Foundation, with no Invariant Sections, no Front-Cover Texts
5 .. and no Back-Cover Texts. A copy of the license is included at
6 .. Documentation/media/uapi/fdl-appendix.rst.
8 .. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
10 .. _lirc_set_send_duty_cycle:
12 ******************************
13 ioctl LIRC_SET_SEND_DUTY_CYCLE
14 ******************************
19 LIRC_SET_SEND_DUTY_CYCLE - Set the duty cycle of the carrier signal for
25 .. c:function:: int ioctl( int fd, LIRC_SET_SEND_DUTY_CYCLE, __u32 *duty_cycle)
26 :name: LIRC_SET_SEND_DUTY_CYCLE
32 File descriptor returned by open().
35 Duty cicle, describing the pulse width in percent (from 1 to 99) of
36 the total cycle. Values 0 and 100 are reserved.
42 Get/set the duty cycle of the carrier signal for IR transmit.
44 Currently, no special meaning is defined for 0 or 100, but this
45 could be used to switch off carrier generation in the future, so
46 these values should be reserved.
52 On success 0 is returned, on error -1 and the ``errno`` variable is set
53 appropriately. The generic error codes are described at the
54 :ref:`Generic Error Codes <gen-errors>` chapter.