1.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 2.. c:namespace:: DTV.fe 3 4.. _FE_DISEQC_SEND_BURST: 5 6************************** 7ioctl FE_DISEQC_SEND_BURST 8************************** 9 10Name 11==== 12 13FE_DISEQC_SEND_BURST - Sends a 22KHz tone burst for 2x1 mini DiSEqC satellite selection. 14 15Synopsis 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 22Arguments 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 31Description 32=========== 33 34This ioctl is used to set the generation of a 22kHz tone burst for mini 35DiSEqC satellite selection for 2x1 switches. This call requires 36read/write permissions. 37 38It 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 41Return Value 42============ 43 44On success 0 is returned. 45 46On error -1 is returned, and the ``errno`` variable is set 47appropriately. 48 49Generic error codes are described at the 50:ref:`Generic Error Codes <gen-errors>` chapter. 51