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