1 .. -*- coding: utf-8; mode: rst -*-
3 .. _lirc_get_rec_resolution:
5 *****************************
6 ioctl LIRC_GET_REC_RESOLUTION
7 *****************************
12 LIRC_GET_REC_RESOLUTION - Obtain the value of receive resolution, in microseconds.
17 .. cpp:function:: int ioctl( int fd, int request, __u32 *microseconds)
23 File descriptor returned by open().
26 LIRC_GET_REC_RESOLUTION
29 Resolution, in microseconds.
35 Some receivers have maximum resolution which is defined by internal
36 sample rate or data format limitations. E.g. it's common that
37 signals can only be reported in 50 microsecond steps.
39 This ioctl returns the integer value with such resolution, with can be
40 used by userspace applications like lircd to automatically adjust the
47 On success 0 is returned, on error -1 and the ``errno`` variable is set
48 appropriately. The generic error codes are described at the
49 :ref:`Generic Error Codes <gen-errors>` chapter.