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- .. -*- coding: utf-8; mode: rst -*-
- .. _FE_READ_SIGNAL_STRENGTH:
- ***********************
- FE_READ_SIGNAL_STRENGTH
- ***********************
- Name
- ====
- FE_READ_SIGNAL_STRENGTH
- .. attention:: This ioctl is deprecated.
- Synopsis
- ========
- .. c:function:: int ioctl( int fd, FE_READ_SIGNAL_STRENGTH, uint16_t *strength)
- :name: FE_READ_SIGNAL_STRENGTH
- Arguments
- =========
- ``fd``
- File descriptor returned by :c:func:`open() <dvb-fe-open>`.
- ``strength``
- The signal strength value is stored into \*strength.
- Description
- ===========
- This ioctl call returns the signal strength value for the signal
- currently received 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 <gen-errors>` chapter.
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