| .. -*- coding: utf-8; mode: rst -*- |
| |
| .. _FE_READ_BER: |
| |
| *********** |
| FE_READ_BER |
| *********** |
| |
| Name |
| ==== |
| |
| FE_READ_BER |
| |
| Synopsis |
| ======== |
| |
| .. cpp:function:: int ioctl(int fd, int request = FE_READ_BER, uint32_t *ber) |
| |
| |
| Arguments |
| ========= |
| |
| .. flat-table:: |
| :header-rows: 0 |
| :stub-columns: 0 |
| |
| |
| - .. row 1 |
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| - int fd |
| |
| - File descriptor returned by a previous call to open(). |
| |
| - .. row 2 |
| |
| - int request |
| |
| - Equals :ref:`FE_READ_BER` for this command. |
| |
| - .. row 3 |
| |
| - uint32_t \*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 and the ``errno`` variable is set |
| appropriately. The generic error codes are described at the |
| :ref:`Generic Error Codes <gen-errors>` chapter. |