sys/sys/dataacq.h

   1 /*
   2  * Header for general data acquisition definitions.
   3  *
   4  * $FreeBSD: src/sys/sys/dataacq.h,v 1.4.6.1 2000/08/02 21:27:07 peter Exp $
   5  * $DragonFly: src/sys/sys/dataacq.h,v 1.2 2003/06/17 04:28:58 dillon Exp $
   6  */
   7
   8 #ifndef _SYS_DATAACQ_H_
   9 #define _SYS_DATAACQ_H_
  10
  11 #include <sys/ioccom.h>
  12
  13 /* Period in microseconds between analog I/O samples.
  14  */
  15 #define AD_MICRO_PERIOD_SET _IOW('A', 1, long)
  16 #define AD_MICRO_PERIOD_GET _IOR('A', 2, long)
  17
  18 /* Gain list support.  Initially all gains are 1.  If the board
  19  * supports no gains at all then AD_NGAINS_GET will return a 0.
  20  *
  21  * AD_NGAINS_GET: Return the number of gains the board supports
  22  *
  23  * AD_SUPPORTED_GAINS: Get the supported gains.
  24  * The driver will copy out "ngains" doubles,
  25  * where "ngains" is obtained with AD_NGAINS_GET.
  26  *
  27  * AD_GAINS_SET: Set the gain list.  The driver will copy in "ngains" ints.
  28  *
  29  * AD_GAINS_GET: Get the gain list.  The driver will copy out "ngains" ints.
  30  */
  31
  32 #define AD_NGAINS_GET     _IOR('A', 3, int)
  33 #define AD_NCHANS_GET     _IOR('A', 4, int)
  34 #define AD_SUPPORTED_GAINS _IO('A', 5)
  35 #define AD_GAINS_SET       _IO('A', 6)
  36 #define AD_GAINS_GET       _IO('A', 7)
  37
  38 #endif /* !_SYS_DATAACQ_H_ */