.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. c:namespace:: DTV.fe

.. _FE_DISEQC_SEND_BURST:

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ioctl FE_DISEQC_SEND_BURST

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Name

FE_DISEQC_SEND_BURST - Sends a 22KHz tone burst for 2x1 mini DiSEqC satellite selection.

Synopsis

.. c:macro:: FE_DISEQC_SEND_BURST

int ioctl(int fd, FE_DISEQC_SEND_BURST, enum fe_sec_mini_cmd tone)

Arguments

fd File descriptor returned by :c:func:open().

tone An integer enumerated value described at :c:type:fe_sec_mini_cmd.

Description

This ioctl is used to set the generation of a 22kHz tone burst for mini DiSEqC satellite selection for 2x1 switches. This call requires read/write permissions.

It provides support for what's specified at 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>__

Return Value

On success 0 is returned.

On error -1 is returned, and the errno variable is set appropriately.

Generic error codes are described at the :ref:Generic Error Codes <gen-errors> chapter.