1*4882a593Smuzhiyun.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 2*4882a593Smuzhiyun.. c:namespace:: DTV.fe 3*4882a593Smuzhiyun 4*4882a593Smuzhiyun.. _FE_DISEQC_SEND_BURST: 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun************************** 7*4882a593Smuzhiyunioctl FE_DISEQC_SEND_BURST 8*4882a593Smuzhiyun************************** 9*4882a593Smuzhiyun 10*4882a593SmuzhiyunName 11*4882a593Smuzhiyun==== 12*4882a593Smuzhiyun 13*4882a593SmuzhiyunFE_DISEQC_SEND_BURST - Sends a 22KHz tone burst for 2x1 mini DiSEqC satellite selection. 14*4882a593Smuzhiyun 15*4882a593SmuzhiyunSynopsis 16*4882a593Smuzhiyun======== 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun.. c:macro:: FE_DISEQC_SEND_BURST 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun``int ioctl(int fd, FE_DISEQC_SEND_BURST, enum fe_sec_mini_cmd tone)`` 21*4882a593Smuzhiyun 22*4882a593SmuzhiyunArguments 23*4882a593Smuzhiyun========= 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun``fd`` 26*4882a593Smuzhiyun File descriptor returned by :c:func:`open()`. 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun``tone`` 29*4882a593Smuzhiyun An integer enumered value described at :c:type:`fe_sec_mini_cmd`. 30*4882a593Smuzhiyun 31*4882a593SmuzhiyunDescription 32*4882a593Smuzhiyun=========== 33*4882a593Smuzhiyun 34*4882a593SmuzhiyunThis ioctl is used to set the generation of a 22kHz tone burst for mini 35*4882a593SmuzhiyunDiSEqC satellite selection for 2x1 switches. This call requires 36*4882a593Smuzhiyunread/write permissions. 37*4882a593Smuzhiyun 38*4882a593SmuzhiyunIt provides support for what's specified at 39*4882a593Smuzhiyun`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*4882a593Smuzhiyun 41*4882a593SmuzhiyunReturn Value 42*4882a593Smuzhiyun============ 43*4882a593Smuzhiyun 44*4882a593SmuzhiyunOn success 0 is returned. 45*4882a593Smuzhiyun 46*4882a593SmuzhiyunOn error -1 is returned, and the ``errno`` variable is set 47*4882a593Smuzhiyunappropriately. 48*4882a593Smuzhiyun 49*4882a593SmuzhiyunGeneric error codes are described at the 50*4882a593Smuzhiyun:ref:`Generic Error Codes <gen-errors>` chapter. 51