.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. c:namespace:: DTV.fe .. _FE_READ_BER: *********** FE_READ_BER *********** Name ==== FE_READ_BER .. attention:: This ioctl is deprecated. Synopsis ======== .. c:macro:: FE_READ_BER ``int ioctl(int fd, FE_READ_BER, uint32_t *ber)`` Arguments ========= ``fd`` File descriptor returned by :c:func:`open()`. ``ber`` The bit error rate is stored into \*ber. Description =========== This ioctl call returns the bit error rate for the signal currently received/demodulated by the front-end. For this command, read-only access to the device is sufficient. Return Value ============ On success 0 is returned. On error -1 is returned, and the ``errno`` variable is set appropriately. Generic error codes are described at the :ref:`Generic Error Codes ` chapter.