fe-read-signal-strength.rst
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FE_READ_SIGNAL_STRENGTH
Name
FE_READ_SIGNAL_STRENGTH
Attention!
This ioctl is deprecated.
Synopsis
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 and the errno variable is set appropriately. The generic error codes are described at the :ref:`Generic Error Codes <gen-errors>` chapter.