1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 2 .. c:namespace:: DTV.fe 3 4 .. _FE_DISEQC_SEND_BURST: 5 6 ************************** 7 ioctl FE_DISEQC_SEND_BURST 8 ************************** 9 10 Name 11 ==== 12 13 FE_DISEQC_SEND_BURST - Sends a 22KHz tone burst for 2x1 mini DiSEqC satellite selection. 14 15 Synopsis 16 ======== 17 18 .. c:macro:: FE_DISEQC_SEND_BURST 19 20 ``int ioctl(int fd, FE_DISEQC_SEND_BURST, enum fe_sec_mini_cmd tone)`` 21 22 Arguments 23 ========= 24 25 ``fd`` 26 File descriptor returned by :c:func:`open()`. 27 28 ``tone`` 29 An integer enumered value described at :c:type:`fe_sec_mini_cmd`. 30 31 Description 32 =========== 33 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. 37 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>`__ 40 41 Return Value 42 ============ 43 44 On success 0 is returned. 45 46 On error -1 is returned, and the ``errno`` variable is set 47 appropriately. 48 49 Generic error codes are described at the 50 :ref:`Generic Error Codes <gen-errors>` chapter.
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