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62 lines
1.3 KiB
ReStructuredText
62 lines
1.3 KiB
ReStructuredText
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.. -*- coding: utf-8; mode: rst -*-
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.. _FE_READ_BER:
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***********
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FE_READ_BER
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***********
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DESCRIPTION
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This ioctl call returns the bit error rate for the signal currently
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received/demodulated by the front-end. For this command, read-only
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access to the device is sufficient.
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SYNOPSIS
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int ioctl(int fd, int request = :ref:`FE_READ_BER <FE_READ_BER>`,
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uint32_t *ber);
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PARAMETERS
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.. flat-table::
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:header-rows: 0
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:stub-columns: 0
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- .. row 1
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- int fd
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- File descriptor returned by a previous call to open().
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- .. row 2
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- int request
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- Equals :ref:`FE_READ_BER <FE_READ_BER>` for this command.
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- .. row 3
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- uint32_t *ber
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- The bit error rate is stored into *ber.
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RETURN VALUE
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On success 0 is returned, on error -1 and the ``errno`` variable is set
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appropriately. The generic error codes are described at the
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:ref:`Generic Error Codes <gen-errors>` chapter.
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.. ------------------------------------------------------------------------------
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.. This file was automatically converted from DocBook-XML with the dbxml
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.. library (https://github.com/return42/sphkerneldoc). The origin XML comes
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.. from the linux kernel, refer to:
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..
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.. * https://github.com/torvalds/linux/tree/master/Documentation/DocBook
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.. ------------------------------------------------------------------------------
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