6.1.2.3. FE_READ_SIGNAL_STRENGTH¶

6.1.2.3.1. Name¶

FE_READ_SIGNAL_STRENGTH

Attention

This ioctl is deprecated.

6.1.2.3.2. Synopsis¶

FE_READ_SIGNAL_STRENGTH¶

int ioctl(int fd, FE_READ_SIGNAL_STRENGTH, uint16_t *strength)

6.1.2.3.3. Arguments¶

fd: File descriptor returned by open().
strength: The signal strength value is stored into *strength.

6.1.2.3.4. 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.

6.1.2.3.5. 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 Generic Error Codes chapter.