FE_READ_BER
| int fd | File descriptor returned by a previous call to open(). |
| int request | Equals FE_READ_BER for this command. |
| uint32_t *ber | The bit error rate is stored into *ber. |
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.
On success 0 is returned, on error -1 and the errno variable is set appropriately. The generic error codes are described at the Generic Error Codes chapter.