| Current Path : /usr/src/sys/sys/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //usr/src/sys/sys/dataacq.h |
/*
* Header for general data acquisition definitions.
*
* $FreeBSD: release/9.1.0/sys/sys/dataacq.h 59874 2000-05-01 20:32:07Z peter $
*/
#ifndef _SYS_DATAACQ_H_
#define _SYS_DATAACQ_H_
#include <sys/ioccom.h>
/* Period in microseconds between analog I/O samples.
*/
#define AD_MICRO_PERIOD_SET _IOW('A', 1, long)
#define AD_MICRO_PERIOD_GET _IOR('A', 2, long)
/* Gain list support. Initially all gains are 1. If the board
* supports no gains at all then AD_NGAINS_GET will return a 0.
*
* AD_NGAINS_GET: Return the number of gains the board supports
*
* AD_SUPPORTED_GAINS: Get the supported gains.
* The driver will copy out "ngains" doubles,
* where "ngains" is obtained with AD_NGAINS_GET.
*
* AD_GAINS_SET: Set the gain list. The driver will copy in "ngains" ints.
*
* AD_GAINS_GET: Get the gain list. The driver will copy out "ngains" ints.
*/
#define AD_NGAINS_GET _IOR('A', 3, int)
#define AD_NCHANS_GET _IOR('A', 4, int)
#define AD_SUPPORTED_GAINS _IO('A', 5)
#define AD_GAINS_SET _IO('A', 6)
#define AD_GAINS_GET _IO('A', 7)
#endif /* !_SYS_DATAACQ_H_ */