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Linux kernel mirror (for testing)
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1.. -*- coding: utf-8; mode: rst -*-
2
3.. _FE_DISEQC_SEND_BURST:
4
5**************************
6ioctl FE_DISEQC_SEND_BURST
7**************************
8
9Name
10====
11
12FE_DISEQC_SEND_BURST - Sends a 22KHz tone burst for 2x1 mini DiSEqC satellite selection.
13
14
15Synopsis
16========
17
18.. c:function:: int ioctl( int fd, FE_DISEQC_SEND_BURST, enum fe_sec_mini_cmd *tone )
19 :name: FE_DISEQC_SEND_BURST
20
21
22Arguments
23=========
24
25``fd``
26 File descriptor returned by :ref:`open() <frontend_f_open>`.
27
28``tone``
29 pointer to enum :c:type:`fe_sec_mini_cmd`
30
31
32Description
33===========
34
35This ioctl is used to set the generation of a 22kHz tone burst for mini
36DiSEqC satellite selection for 2x1 switches. This call requires
37read/write permissions.
38
39It provides support for what's specified at
40`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>`__
41
42.. c:type:: fe_sec_mini_cmd
43
44.. flat-table:: enum fe_sec_mini_cmd
45 :header-rows: 1
46 :stub-columns: 0
47
48
49 - .. row 1
50
51 - ID
52
53 - Description
54
55 - .. row 2
56
57 - .. _SEC-MINI-A:
58
59 ``SEC_MINI_A``
60
61 - Sends a mini-DiSEqC 22kHz '0' Tone Burst to select satellite-A
62
63 - .. row 3
64
65 - .. _SEC-MINI-B:
66
67 ``SEC_MINI_B``
68
69 - Sends a mini-DiSEqC 22kHz '1' Data Burst to select satellite-B
70
71
72Return Value
73============
74
75On success 0 is returned, on error -1 and the ``errno`` variable is set
76appropriately. The generic error codes are described at the
77:ref:`Generic Error Codes <gen-errors>` chapter.