.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. c:namespace:: DTV.fe .. _FE_DISEQC_SEND_BURST: ************************** ioctl FE_DISEQC_SEND_BURST ************************** 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 enumered 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. `__ 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 ` chapter.