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