1.. Permission is granted to copy, distribute and/or modify this 2.. document under the terms of the GNU Free Documentation License, 3.. Version 1.1 or any later version published by the Free Software 4.. Foundation, with no Invariant Sections, no Front-Cover Texts 5.. and no Back-Cover Texts. A copy of the license is included at 6.. Documentation/userspace-api/media/fdl-appendix.rst. 7.. 8.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections 9 10.. _FE_DISEQC_SEND_BURST: 11 12************************** 13ioctl FE_DISEQC_SEND_BURST 14************************** 15 16Name 17==== 18 19FE_DISEQC_SEND_BURST - Sends a 22KHz tone burst for 2x1 mini DiSEqC satellite selection. 20 21 22Synopsis 23======== 24 25.. c:function:: int ioctl( int fd, FE_DISEQC_SEND_BURST, enum fe_sec_mini_cmd tone ) 26 :name: FE_DISEQC_SEND_BURST 27 28 29Arguments 30========= 31 32``fd`` 33 File descriptor returned by :ref:`open() <frontend_f_open>`. 34 35``tone`` 36 An integer enumered value described at :c:type:`fe_sec_mini_cmd`. 37 38 39Description 40=========== 41 42This ioctl is used to set the generation of a 22kHz tone burst for mini 43DiSEqC satellite selection for 2x1 switches. This call requires 44read/write permissions. 45 46It provides support for what's specified at 47`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>`__ 48 49 50Return Value 51============ 52 53On success 0 is returned. 54 55On error -1 is returned, and the ``errno`` variable is set 56appropriately. 57 58Generic error codes are described at the 59:ref:`Generic Error Codes <gen-errors>` chapter. 60