cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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fe-diseqc-send-burst.rst (1245B)

      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.