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1.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later2.. c:namespace:: DTV.fe3 4.. _FE_DISEQC_SEND_BURST:5 6**************************7ioctl FE_DISEQC_SEND_BURST8**************************9 10Name11====12 13FE_DISEQC_SEND_BURST - Sends a 22KHz tone burst for 2x1 mini DiSEqC satellite selection.14 15Synopsis16========17 18.. c:macro:: FE_DISEQC_SEND_BURST19 20``int ioctl(int fd, FE_DISEQC_SEND_BURST, enum fe_sec_mini_cmd tone)``21 22Arguments23=========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 31Description32===========33 34This ioctl is used to set the generation of a 22kHz tone burst for mini35DiSEqC satellite selection for 2x1 switches. This call requires36read/write permissions.37 38It provides support for what's specified at39`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 41Return Value42============43 44On success 0 is returned.45 46On error -1 is returned, and the ``errno`` variable is set47appropriately.48 49Generic error codes are described at the50:ref:`Generic Error Codes <gen-errors>` chapter.51