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/userspace-api/media/fdl-appendix.rst.
7..
8.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
9
10.. _FE_DISEQC_SEND_BURST:
11
12**************************
13ioctl FE_DISEQC_SEND_BURST
14**************************
15
16Name
17====
18
19FE_DISEQC_SEND_BURST - Sends a 22KHz tone burst for 2x1 mini DiSEqC satellite selection.
20
21
22Synopsis
23========
24
25.. c:function:: int ioctl( int fd, FE_DISEQC_SEND_BURST, enum fe_sec_mini_cmd tone )
26    :name: FE_DISEQC_SEND_BURST
27
28
29Arguments
30=========
31
32``fd``
33    File descriptor returned by :ref:`open() <frontend_f_open>`.
34
35``tone``
36    An integer enumered value described at :c:type:`fe_sec_mini_cmd`.
37
38
39Description
40===========
41
42This ioctl is used to set the generation of a 22kHz tone burst for mini
43DiSEqC satellite selection for 2x1 switches. This call requires
44read/write permissions.
45
46It provides support for what's specified at
47`Digital Satellite Equipment Control (DiSEqC) - Simple "ToneBurst" Detection Circuit specification. <http://www.eutelsat.com/files/contributed/satellites/pdf/Diseqc/associated%20docs/simple_tone_burst_detec.pdf>`__
48
49
50Return Value
51============
52
53On success 0 is returned.
54
55On error -1 is returned, and the ``errno`` variable is set
56appropriately.
57
58Generic error codes are described at the
59:ref:`Generic Error Codes <gen-errors>` chapter.
60