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