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 .. c:function:: int ioctl( int fd, LIRC_GET_REC_RESOLUTION, __u32 *microseconds)
18 :name: LIRC_GET_REC_RESOLUTION
24 File descriptor returned by open().
27 Resolution, in microseconds.
33 Some receivers have maximum resolution which is defined by internal
34 sample rate or data format limitations. E.g. it's common that
35 signals can only be reported in 50 microsecond steps.
37 This ioctl returns the integer value with such resolution, with can be
38 used by userspace applications like lircd to automatically adjust the
45 On success 0 is returned, on error -1 and the ``errno`` variable is set
46 appropriately. The generic error codes are described at the
47 :ref:`Generic Error Codes <gen-errors>` chapter.