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50 lines
1.2 KiB
50 lines
1.2 KiB
.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later |
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.. c:namespace:: DTV.fe |
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.. _FE_DISEQC_SEND_BURST: |
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************************** |
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ioctl FE_DISEQC_SEND_BURST |
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************************** |
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Name |
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==== |
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FE_DISEQC_SEND_BURST - Sends a 22KHz tone burst for 2x1 mini DiSEqC satellite selection. |
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Synopsis |
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======== |
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.. c:macro:: FE_DISEQC_SEND_BURST |
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``int ioctl(int fd, FE_DISEQC_SEND_BURST, enum fe_sec_mini_cmd tone)`` |
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Arguments |
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========= |
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``fd`` |
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File descriptor returned by :c:func:`open()`. |
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``tone`` |
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An integer enumered value described at :c:type:`fe_sec_mini_cmd`. |
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Description |
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=========== |
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This ioctl is used to set the generation of a 22kHz tone burst for mini |
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DiSEqC satellite selection for 2x1 switches. This call requires |
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read/write permissions. |
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It provides support for what's specified at |
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`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>`__ |
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Return Value |
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============ |
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On success 0 is returned. |
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On error -1 is returned, and the ``errno`` variable is set |
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appropriately. |
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Generic error codes are described at the |
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:ref:`Generic Error Codes <gen-errors>` chapter.
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