38 lines
1.0 KiB
C
38 lines
1.0 KiB
C
/*
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* Header for general data acquisition definitions.
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*
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* $FreeBSD$
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*/
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#ifndef _SYS_DATAACQ_H_
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#define _SYS_DATAACQ_H_
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#include <sys/ioccom.h>
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/* Period in microseconds between analog I/O samples.
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*/
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#define AD_MICRO_PERIOD_SET _IOW('A', 1, long)
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#define AD_MICRO_PERIOD_GET _IOR('A', 2, long)
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/* Gain list support. Initially all gains are 1. If the board
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* supports no gains at all then AD_NGAINS_GET will return a 0.
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*
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* AD_NGAINS_GET: Return the number of gains the board supports
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*
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* AD_SUPPORTED_GAINS: Get the supported gains.
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* The driver will copy out "ngains" doubles,
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* where "ngains" is obtained with AD_NGAINS_GET.
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*
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* AD_GAINS_SET: Set the gain list. The driver will copy in "ngains" ints.
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*
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* AD_GAINS_GET: Get the gain list. The driver will copy out "ngains" ints.
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*/
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#define AD_NGAINS_GET _IOR('A', 3, int)
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#define AD_NCHANS_GET _IOR('A', 4, int)
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#define AD_SUPPORTED_GAINS _IO('A', 5)
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#define AD_GAINS_SET _IO('A', 6)
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#define AD_GAINS_GET _IO('A', 7)
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#endif /* !_SYS_DATAACQ_H_ */
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