--- /dev/null
+/*
+ include/comedi.h (installed as /usr/include/comedi.h)
+ header file for comedi
+
+ COMEDI - Linux Control and Measurement Device Interface
+ Copyright (C) 1998 David A. Schleef <ds@stm.lbl.gov>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+
+#ifndef _COMEDI_H
+#define _COMEDI_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* comedi's major device number */
+#define COMEDI_MAJOR 98
+
+/*
+ maximum number of minor devices. This can be increased, although
+ kernel structures are currently statically allocated, thus you
+ don't want this to be much more than you actually use.
+ */
+#define COMEDI_NDEVICES 4
+
+/* number of config options in the config structure */
+#define COMEDI_NDEVCONFOPTS 32
+
+/* max length of device and driver names */
+#define COMEDI_NAMELEN 20
+
+
+typedef unsigned int lsampl_t;
+typedef unsigned short sampl_t;
+
+/* packs and unpacks a channel/range number */
+
+#define CR_PACK(chan,rng,aref) ( (((aref)&0x3)<<24) | (((rng)&0xff)<<16) | ((chan)&0xffff) )
+
+#define CR_CHAN(a) ((a)&0xffff)
+#define CR_RANGE(a) (((a)>>16)&0xff)
+#define CR_AREF(a) (((a)>>24)&0x03)
+
+#define AREF_GROUND 0x00 /* analog ref = analog ground */
+#define AREF_COMMON 0x01 /* analog ref = analog common */
+#define AREF_DIFF 0x02 /* analog ref = differential */
+#define AREF_OTHER 0x03 /* analog ref = other (undefined) */
+
+/* trigger flags */
+
+#define TRIG_BOGUS 0x0001 /* do the motions */
+#define TRIG_DITHER 0x0002 /* enable dithering */
+#define TRIG_DEGLITCH 0x0004 /* enable deglitching */
+#define TRIG_RT 0x0008 /* perform op in real time */
+#define TRIG_CONFIG 0x0010 /* perform configuration, not triggering */
+#define TRIG_WAKE_EOS 0x0020 /* wake up on end-of-scan events */
+#define TRIG_WRITE 0x0040 /* write to bidirectional devices */
+
+#define TRIG_ROUND_MASK 0x00030000
+#define TRIG_ROUND_NEAREST 0x00000000
+#define TRIG_ROUND_DOWN 0x00010000
+#define TRIG_ROUND_UP 0x00020000
+#define TRIG_ROUND_UP_NEXT 0x00030000
+
+/* trigger sources */
+
+#define TRIG_ANY 0xffffffff
+#define TRIG_NONE 0x00000001 /* never trigger */
+#define TRIG_NOW 0x00000002 /* trigger now + N ns */
+#define TRIG_FOLLOW 0x00000004 /* trigger on next lower level trig */
+#define TRIG_TIME 0x00000008 /* trigger at time N ns */
+#define TRIG_TIMER 0x00000010 /* trigger at rate N ns */
+#define TRIG_COUNT 0x00000020 /* trigger when count reaches N */
+#define TRIG_EXT 0x00000040 /* trigger on external signal N */
+#define TRIG_INT 0x00000080 /* trigger on comedi-internal signal N */
+
+#define TRIG_INVAL 0x00000100 /* choice was invalid */
+
+/* subdevice flags */
+
+#define SDF_BUSY 0x0001 /* device is busy */
+#define SDF_BUSY_OWNER 0x0002 /* device is busy with your job */
+#define SDF_LOCKED 0x0004 /* subdevice is locked */
+#define SDF_LOCK_OWNER 0x0008 /* you own lock */
+#define SDF_MAXDATA 0x0010 /* maxdata depends on channel */
+#define SDF_FLAGS 0x0020 /* flags depend on channel */
+#define SDF_RANGETYPE 0x0040 /* range type depends on channel */
+#define SDF_MODE0 0x0080 /* can do mode 0 */
+#define SDF_MODE1 0x0100 /* can do mode 1 */
+#define SDF_MODE2 0x0200 /* can do mode 2 */
+#define SDF_MODE3 0x0400 /* can do mode 3 */
+#define SDF_MODE4 0x0800 /* can do mode 4 */
+
+#define SDF_READABLE 0x00010000 /* subdevice can be read (e.g. analog input) */
+#define SDF_WRITEABLE 0x00020000 /* subdevice can be written (e.g. analog output) */
+#define SDF_INTERNAL 0x00040000 /* subdevice does not have externally visible lines */
+#define SDF_RT 0x00080000 /* subdevice is RT capable */
+#define SDF_GROUND 0x00100000 /* can do aref=ground */
+#define SDF_COMMON 0x00200000 /* can do aref=common */
+#define SDF_DIFF 0x00400000 /* can do aref=diff */
+#define SDF_OTHER 0x00800000 /* can do aref=other */
+#define SDF_DITHER 0x01000000 /* can do dithering */
+#define SDF_DEGLITCH 0x02000000 /* can do deglitching */
+#define SDF_MMAP 0x04000000 /* can do mmap() */
+#define SDF_RUNNING 0x08000000 /* subdevice is acquiring data */
+#define SDF_LSAMPL 0x10000000 /* subdevice uses 32-bit samples */
+
+
+/* subdevice types */
+
+#define COMEDI_SUBD_UNUSED 0 /* unused */
+#define COMEDI_SUBD_AI 1 /* analog input */
+#define COMEDI_SUBD_AO 2 /* analog output */
+#define COMEDI_SUBD_DI 3 /* digital input */
+#define COMEDI_SUBD_DO 4 /* digital output */
+#define COMEDI_SUBD_DIO 5 /* digital input/output */
+#define COMEDI_SUBD_COUNTER 6 /* counter */
+#define COMEDI_SUBD_TIMER 7 /* timer */
+#define COMEDI_SUBD_MEMORY 8 /* memory, EEPROM, DPRAM */
+#define COMEDI_SUBD_CALIB 9 /* calibration DACs */
+#define COMEDI_SUBD_PROC 10 /* processor, DSP */
+
+
+#define COMEDI_INPUT 0
+#define COMEDI_OUTPUT 1
+
+/* ioctls */
+
+#define CIO 'd'
+#define COMEDI_DEVCONFIG _IOW(CIO,0,comedi_devconfig)
+#define COMEDI_DEVINFO _IOR(CIO,1,comedi_devinfo)
+#define COMEDI_SUBDINFO _IOR(CIO,2,comedi_subdinfo)
+#define COMEDI_CHANINFO _IOR(CIO,3,comedi_chaninfo)
+#define COMEDI_TRIG _IOWR(CIO,4,comedi_trig)
+#define COMEDI_LOCK _IO(CIO,5)
+#define COMEDI_UNLOCK _IO(CIO,6)
+#define COMEDI_CANCEL _IO(CIO,7)
+#define COMEDI_RANGEINFO _IOR(CIO,8,comedi_rangeinfo)
+#define COMEDI_CMD _IOR(CIO,9,comedi_cmd)
+#define COMEDI_CMDTEST _IOR(CIO,10,comedi_cmd)
+
+
+
+/* structures */
+
+typedef struct comedi_trig_struct comedi_trig;
+typedef struct comedi_cmd_struct comedi_cmd;
+typedef struct comedi_chaninfo_struct comedi_chaninfo;
+typedef struct comedi_subdinfo_struct comedi_subdinfo;
+typedef struct comedi_devinfo_struct comedi_devinfo;
+typedef struct comedi_devconfig_struct comedi_devconfig;
+typedef struct comedi_rangeinfo_struct comedi_rangeinfo;
+typedef struct comedi_krange_struct comedi_krange;
+
+struct comedi_trig_struct{
+ unsigned int subdev; /* subdevice */
+ unsigned int mode; /* mode */
+ unsigned int flags;
+ unsigned int n_chan; /* number of channels */
+ unsigned int *chanlist; /* channel/range list */
+ sampl_t *data; /* data list, size depends on subd flags */
+ unsigned int n; /* number of scans */
+ unsigned int trigsrc;
+ unsigned int trigvar;
+ unsigned int trigvar1;
+ unsigned int data_len;
+ unsigned int unused[3];
+};
+
+struct comedi_cmd_struct{
+ unsigned int subdev;
+ unsigned int flags;
+
+ unsigned int start_src;
+ unsigned int start_arg;
+
+ unsigned int scan_begin_src;
+ unsigned int scan_begin_arg;
+
+ unsigned int convert_src;
+ unsigned int convert_arg;
+
+ unsigned int scan_end_src;
+ unsigned int scan_end_arg;
+
+ unsigned int stop_src;
+ unsigned int stop_arg;
+
+ unsigned int *chanlist; /* channel/range list */
+ unsigned int chanlist_len;
+
+ sampl_t *data; /* data list, size depends on subd flags */
+ unsigned int data_len;
+};
+
+struct comedi_chaninfo_struct{
+ unsigned int subdev;
+ lsampl_t *maxdata_list;
+ unsigned int *flaglist;
+ unsigned int *rangelist;
+ unsigned int unused[4];
+};
+
+struct comedi_rangeinfo_struct{
+ unsigned int range_type;
+ void *range_ptr;
+};
+
+struct comedi_krange_struct{
+ int min; /* fixed point, multiply by 1e-6 */
+ int max; /* fixed point, multiply by 1e-6 */
+ unsigned int flags;
+};
+
+struct comedi_subdinfo_struct{
+ unsigned int type;
+ unsigned int n_chan;
+ unsigned int subd_flags;
+ unsigned int timer_type;
+ unsigned int len_chanlist;
+ lsampl_t maxdata;
+ unsigned int flags; /* channel flags */
+ unsigned int range_type; /* lookup in kernel */
+ unsigned int unused[10];
+};
+
+struct comedi_devinfo_struct{
+ unsigned int version_code;
+ unsigned int n_subdevs;
+ char driver_name[COMEDI_NAMELEN];
+ char board_name[COMEDI_NAMELEN];
+ int options[COMEDI_NDEVCONFOPTS];
+};
+
+struct comedi_devconfig_struct{
+ char board_name[COMEDI_NAMELEN];
+ int options[COMEDI_NDEVCONFOPTS];
+};
+
+
+/* range stuff */
+
+#define __RANGE(a,b) ((((a)&0xffff)<<16)|((b)&0xffff))
+
+#define RANGE_OFFSET(a) (((a)>>16)&0xffff)
+#define RANGE_LENGTH(b) ((b)&0xffff)
+
+#define RF_UNIT(flags) ((flags)&0xff)
+#define RF_EXTERNAL (1<<8)
+
+#define UNIT_volt 0
+#define UNIT_mA 1
+#define UNIT_none 2
+
+
+/* Kernel internal stuff. Needed by RTLinux modules and such. */
+
+#ifdef __KERNEL__
+
+/* callback stuff */
+
+#define COMEDI_CB_EOS 1 /* end of scan */
+#define COMEDI_CB_EOA 2 /* end of acquisition */
+#define COMEDI_CB_BLOCK 4 /* convenient block size */
+#define COMEDI_CB_EOBUF 8 /* end of buffer */
+
+/* exported functions */
+
+/* these functions may not be called at real-time priority */
+
+int comedi_open(unsigned int minor);
+void comedi_close(unsigned int minor);
+
+/* these functions may be called at any priority, but may fail at
+ real-time priority */
+
+int comedi_lock_ioctl(unsigned int minor,unsigned int subdev);
+int comedi_unlock_ioctl(unsigned int minor,unsigned int subdev);
+
+/* these functions may be called at any priority, but you must hold
+ the lock for the subdevice */
+
+int comedi_cancel_ioctl(unsigned int minor,unsigned int subdev);
+int comedi_register_callback(unsigned int minor,unsigned int subdev,
+ unsigned int mask,int (*cb)(unsigned int,void *),void *arg);
+
+int comedi_trig_ioctl(unsigned int minor,unsigned int subdev,comedi_trig *it);
+int __comedi_trig_ioctl(unsigned int minor,unsigned int subdev,comedi_trig *it);
+int comedi_data_write(unsigned int dev,unsigned int subdev,unsigned int chan,
+ unsigned int range,unsigned int aref,lsampl_t data);
+int comedi_data_read(unsigned int dev,unsigned int subdev,unsigned int chan,
+ unsigned int range,unsigned int aref,lsampl_t *data);
+int comedi_dio_config(unsigned int dev,unsigned int subdev,unsigned int chan,
+ unsigned int io);
+int comedi_dio_read(unsigned int dev,unsigned int subdev,unsigned int chan,
+ unsigned int *val);
+int comedi_dio_write(unsigned int dev,unsigned int subdev,unsigned int chan,
+ unsigned int val);
+int comedi_dio_bitfield(unsigned int dev,unsigned int subdev,unsigned int mask,
+ unsigned int *bits);
+
+
+#endif
+
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _COMEDI_H */
+
projects / comedilib.git / commitdiff