50 lines · plain
1.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later2.. c:namespace:: DTV.fe3 4.. _FE_READ_BER:5 6***********7FE_READ_BER8***********9 10Name11====12 13FE_READ_BER14 15.. attention:: This ioctl is deprecated.16 17Synopsis18========19 20.. c:macro:: FE_READ_BER21 22``int ioctl(int fd, FE_READ_BER, uint32_t *ber)``23 24Arguments25=========26 27``fd``28 File descriptor returned by :c:func:`open()`.29 30``ber``31 The bit error rate is stored into \*ber.32 33Description34===========35 36This ioctl call returns the bit error rate for the signal currently37received/demodulated by the front-end. For this command, read-only38access to the device is sufficient.39 40Return Value41============42 43On success 0 is returned.44 45On error -1 is returned, and the ``errno`` variable is set46appropriately.47 48Generic error codes are described at the49:ref:`Generic Error Codes <gen-errors>` chapter.50