1.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2.. c:namespace:: DTV.fe
3
4.. _FE_READ_BER:
5
6***********
7FE_READ_BER
8***********
9
10Name
11====
12
13FE_READ_BER
14
15.. attention:: This ioctl is deprecated.
16
17Synopsis
18========
19
20.. c:macro:: FE_READ_BER
21
22``int ioctl(int fd, FE_READ_BER, uint32_t *ber)``
23
24Arguments
25=========
26
27``fd``
28    File descriptor returned by :c:func:`open()`.
29
30``ber``
31    The bit error rate is stored into \*ber.
32
33Description
34===========
35
36This ioctl call returns the bit error rate for the signal currently
37received/demodulated by the front-end. For this command, read-only
38access to the device is sufficient.
39
40Return Value
41============
42
43On success 0 is returned.
44
45On error -1 is returned, and the ``errno`` variable is set
46appropriately.
47
48Generic error codes are described at the
49:ref:`Generic Error Codes <gen-errors>` chapter.
50