18c2ecf20Sopenharmony_ci.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 28c2ecf20Sopenharmony_ci.. c:namespace:: DTV.fe 38c2ecf20Sopenharmony_ci 48c2ecf20Sopenharmony_ci.. _FE_READ_BER: 58c2ecf20Sopenharmony_ci 68c2ecf20Sopenharmony_ci*********** 78c2ecf20Sopenharmony_ciFE_READ_BER 88c2ecf20Sopenharmony_ci*********** 98c2ecf20Sopenharmony_ci 108c2ecf20Sopenharmony_ciName 118c2ecf20Sopenharmony_ci==== 128c2ecf20Sopenharmony_ci 138c2ecf20Sopenharmony_ciFE_READ_BER 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_ci.. attention:: This ioctl is deprecated. 168c2ecf20Sopenharmony_ci 178c2ecf20Sopenharmony_ciSynopsis 188c2ecf20Sopenharmony_ci======== 198c2ecf20Sopenharmony_ci 208c2ecf20Sopenharmony_ci.. c:macro:: FE_READ_BER 218c2ecf20Sopenharmony_ci 228c2ecf20Sopenharmony_ci``int ioctl(int fd, FE_READ_BER, uint32_t *ber)`` 238c2ecf20Sopenharmony_ci 248c2ecf20Sopenharmony_ciArguments 258c2ecf20Sopenharmony_ci========= 268c2ecf20Sopenharmony_ci 278c2ecf20Sopenharmony_ci``fd`` 288c2ecf20Sopenharmony_ci File descriptor returned by :c:func:`open()`. 298c2ecf20Sopenharmony_ci 308c2ecf20Sopenharmony_ci``ber`` 318c2ecf20Sopenharmony_ci The bit error rate is stored into \*ber. 328c2ecf20Sopenharmony_ci 338c2ecf20Sopenharmony_ciDescription 348c2ecf20Sopenharmony_ci=========== 358c2ecf20Sopenharmony_ci 368c2ecf20Sopenharmony_ciThis ioctl call returns the bit error rate for the signal currently 378c2ecf20Sopenharmony_cireceived/demodulated by the front-end. For this command, read-only 388c2ecf20Sopenharmony_ciaccess to the device is sufficient. 398c2ecf20Sopenharmony_ci 408c2ecf20Sopenharmony_ciReturn Value 418c2ecf20Sopenharmony_ci============ 428c2ecf20Sopenharmony_ci 438c2ecf20Sopenharmony_ciOn success 0 is returned. 448c2ecf20Sopenharmony_ci 458c2ecf20Sopenharmony_ciOn error -1 is returned, and the ``errno`` variable is set 468c2ecf20Sopenharmony_ciappropriately. 478c2ecf20Sopenharmony_ci 488c2ecf20Sopenharmony_ciGeneric error codes are described at the 498c2ecf20Sopenharmony_ci:ref:`Generic Error Codes <gen-errors>` chapter. 50