1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2 .. c:namespace:: DTV.fe
15 .. attention:: This ioctl is deprecated.
20 .. c:macro:: FE_READ_BER
22 ``int ioctl(int fd, FE_READ_BER, uint32_t *ber)``
28 File descriptor returned by :c:func:`open()`.
31 The bit error rate is stored into \*ber.
36 This ioctl call returns the bit error rate for the signal currently
37 received/demodulated by the front-end. For this command, read-only
38 access to the device is sufficient.
43 On success 0 is returned.
45 On error -1 is returned, and the ``errno`` variable is set
48 Generic error codes are described at the
49 :ref:`Generic Error Codes <gen-errors>` chapter.