137 lines
3.1 KiB
C
137 lines
3.1 KiB
C
/*
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lib/libinternal.h
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header file for comedilib internals
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COMEDI - Linux Control and Measurement Device Interface
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Copyright (C) 1998 David A. Schleef <ds@stm.lbl.gov>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef _LIBINTERNAL_H
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#define _LIBINTERNAL_H
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#include <comedilib.h>
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#include <stdio.h>
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#define debug_ptr(a) if(!(a))fprintf(stderr," ** NULL pointer: " __FILE__ ", line %d\n",__LINE__);
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#define debug_int(a) if((a)<0)fprintf(stderr," ** error: " __FILE__ ", line %d\n",__LINE__);
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#define COMEDILIB_MAGIC 0xc001dafe
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extern int __comedi_init;
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extern int __comedi_loglevel;
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extern int __comedi_errno;
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#if 0
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#define libc_error() (__comedi_errno=errno)
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#define internal_error(a) (__comedi_errno=(a))
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#else
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void libc_error(void);
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void internal_error(int error_number);
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#endif
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typedef struct subdevice_struct subdevice;
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typedef struct device_struct device;
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struct comedi_t_struct{
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int magic;
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int fd;
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int n_subdevices;
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comedi_devinfo devinfo;
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subdevice *subdevices;
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};
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struct subdevice_struct{
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unsigned int type;
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unsigned int n_chan;
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unsigned int subd_flags;
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unsigned int timer_type;
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unsigned int len_chanlist;
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lsampl_t maxdata;
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unsigned int flags;
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unsigned int range_type;
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lsampl_t *maxdata_list;
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unsigned int *range_type_list;
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unsigned int *flags_list;
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comedi_range *rangeinfo;
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comedi_range **rangeinfo_list;
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};
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/* ioctl wrappers */
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int ioctl_devinfo(int fd,comedi_devinfo *it);
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int ioctl_subdinfo(int fd,comedi_subdinfo *it);
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int ioctl_chaninfo(int fd,unsigned int subdev,lsampl_t *maxdata_list,
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unsigned int *flaglist,unsigned int *rangelist);
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int ioctl_trigger(int fd,comedi_trig *it);
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int ioctl_cmd(int fd,comedi_cmd *it);
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int ioctl_lock(int fd,int subdevice);
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int ioctl_unlock(int fd,int subdevice);
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int ioctl_cancel(int fd,int subdevice);
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int ioctl_rangeinfo(int fd,int range_type,comedi_krange *range_ptr);
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/* filler routines */
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int get_subdevices(comedi_t *it);
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comedi_range *get_rangeinfo(int fd,unsigned int range_type);
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/* validators */
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int valid_dev(comedi_t *it);
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int valid_subd(comedi_t *it,unsigned int subdevice);
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int valid_chan(comedi_t *it,unsigned int subdevice,unsigned int chan);
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enum{
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COMEDILIB_NOERROR = 0x1000,
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COMEDILIB_UNKNOWN,
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COMEDILIB_BADDEV,
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COMEDILIB_BADSUBD,
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COMEDILIB_BADCHAN,
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};
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/* comedi version compatibility */
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#ifndef TRIG_WRITE
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#define TRIG_WRITE 0x0040
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#endif
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#ifdef COMEDI_CMD
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#define HAVE_COMEDI_CMD
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#endif
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#endif
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