1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2 .. c:namespace:: DTV.fe
4 .. _FE_DISEQC_SEND_BURST:
6 **************************
7 ioctl FE_DISEQC_SEND_BURST
8 **************************
13 FE_DISEQC_SEND_BURST - Sends a 22KHz tone burst for 2x1 mini DiSEqC satellite selection.
18 .. c:macro:: FE_DISEQC_SEND_BURST
20 ``int ioctl(int fd, FE_DISEQC_SEND_BURST, enum fe_sec_mini_cmd tone)``
26 File descriptor returned by :c:func:`open()`.
29 An integer enumered value described at :c:type:`fe_sec_mini_cmd`.
34 This ioctl is used to set the generation of a 22kHz tone burst for mini
35 DiSEqC satellite selection for 2x1 switches. This call requires
36 read/write permissions.
38 It provides support for what's specified at
39 `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>`__
44 On success 0 is returned.
46 On error -1 is returned, and the ``errno`` variable is set
49 Generic error codes are described at the
50 :ref:`Generic Error Codes <gen-errors>` chapter.