0001 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
0002 .. c:namespace:: DTV.fe
0003
0004 .. _FE_DISEQC_SEND_BURST:
0005
0006 **************************
0007 ioctl FE_DISEQC_SEND_BURST
0008 **************************
0009
0010 Name
0011 ====
0012
0013 FE_DISEQC_SEND_BURST - Sends a 22KHz tone burst for 2x1 mini DiSEqC satellite selection.
0014
0015 Synopsis
0016 ========
0017
0018 .. c:macro:: FE_DISEQC_SEND_BURST
0019
0020 ``int ioctl(int fd, FE_DISEQC_SEND_BURST, enum fe_sec_mini_cmd tone)``
0021
0022 Arguments
0023 =========
0024
0025 ``fd``
0026 File descriptor returned by :c:func:`open()`.
0027
0028 ``tone``
0029 An integer enumered value described at :c:type:`fe_sec_mini_cmd`.
0030
0031 Description
0032 ===========
0033
0034 This ioctl is used to set the generation of a 22kHz tone burst for mini
0035 DiSEqC satellite selection for 2x1 switches. This call requires
0036 read/write permissions.
0037
0038 It provides support for what's specified at
0039 `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>`__
0040
0041 Return Value
0042 ============
0043
0044 On success 0 is returned.
0045
0046 On error -1 is returned, and the ``errno`` variable is set
0047 appropriately.
0048
0049 Generic error codes are described at the
0050 :ref:`Generic Error Codes <gen-errors>` chapter.
