Analogy for Linux, UAPI bits. More...

Data Structures
struct	a4l_cmd_desc
	Structure describing the asynchronous instruction. More...

struct	a4l_instruction
	Structure describing the synchronous instruction. More...

struct	a4l_instruction_list
	Structure describing the list of synchronous instructions. More...

Macros
#define	A4L_RNG_FACTOR 1000000
	Constant for internal use only (must not be used by driver developer).

#define	A4L_RNG_VOLT_UNIT 0x0
	Volt unit range flag.

#define	A4L_RNG_MAMP_UNIT 0x1
	MilliAmpere unit range flag.

#define	A4L_RNG_NO_UNIT 0x2
	No unit range flag.

#define	A4L_RNG_EXT_UNIT 0x4
	External unit range flag.

#define	A4L_RNG_UNIT(x)
	Macro to retrieve the range unit from the range flags.

#define	A4L_INSN_WAIT_MAX 100000
	Maximal wait duration.

ANALOGY_CMD_xxx
Common command flags definitions
#define	A4L_CMD_SIMUL 0x1
	Do not execute the command, just check it.

#define	A4L_CMD_BULK 0x2
	Perform data recovery / transmission in bulk mode.

#define	A4L_CMD_WRITE 0x4
	Perform a command which will write data to the device.

TRIG_xxx
Command triggers flags definitions
#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 analogy-internal signal N.

#define	TRIG_OTHER 0x00000100
	Driver defined trigger.

#define	TRIG_WAKE_EOS 0x0020
	Wake up on end-of-scan.

#define	TRIG_ROUND_MASK 0x00030000
	Trigger not implemented yet.

#define	TRIG_ROUND_NEAREST 0x00000000
	Trigger not implemented yet.

#define	TRIG_ROUND_DOWN 0x00010000
	Trigger not implemented yet.

#define	TRIG_ROUND_UP 0x00020000
	Trigger not implemented yet.

#define	TRIG_ROUND_UP_NEXT 0x00030000
	Trigger not implemented yet.

Channel macros
Specific precompilation macros and constants useful for the channels descriptors tab located in the command structure
#define	CHAN(a) ((a) & 0xffff)
	Channel indication macro.

#define	RNG(a) (((a) & 0xff) << 16)
	Range definition macro.

#define	AREF(a) (((a) & 0x03) << 24)
	Reference definition macro.

#define	FLAGS(a) ((a) & CR_FLAGS_MASK)
	Flags definition macro.

#define	PACK(a, b, c) (a \| RNG(b) \| AREF(c))
	Channel + range + reference definition macro.

#define	PACK_FLAGS(a, b, c, d) (PACK(a, b, c) \| FLAGS(d))
	Channel + range + reference + flags definition macro.

#define	AREF_GROUND 0x00
	Analog reference is analog ground.

#define	AREF_COMMON 0x01
	Analog reference is analog common.

#define	AREF_DIFF 0x02
	Analog reference is differential.

#define	AREF_OTHER 0x03
	Analog reference is undefined.

Subdevices types
Flags to define the subdevice type
#define	A4L_SUBD_UNUSED (A4L_SUBD_MASK_SPECIAL\|0x1)
	Unused subdevice.

#define	A4L_SUBD_AI (A4L_SUBD_MASK_READ\|0x2)
	Analog input subdevice.

#define	A4L_SUBD_AO (A4L_SUBD_MASK_WRITE\|0x4)
	Analog output subdevice.

#define	A4L_SUBD_DI (A4L_SUBD_MASK_READ\|0x8)
	Digital input subdevice.

#define	A4L_SUBD_DO (A4L_SUBD_MASK_WRITE\|0x10)
	Digital output subdevice.

#define	A4L_SUBD_DIO (A4L_SUBD_MASK_SPECIAL\|0x20)
	Digital input/output subdevice.

#define	A4L_SUBD_COUNTER (A4L_SUBD_MASK_SPECIAL\|0x40)
	Counter subdevice.

#define	A4L_SUBD_TIMER (A4L_SUBD_MASK_SPECIAL\|0x80)
	Timer subdevice.

#define	A4L_SUBD_MEMORY (A4L_SUBD_MASK_SPECIAL\|0x100)
	Memory, EEPROM, DPRAM.

#define	A4L_SUBD_CALIB (A4L_SUBD_MASK_SPECIAL\|0x200)
	Calibration subdevice DACs.

#define	A4L_SUBD_PROC (A4L_SUBD_MASK_SPECIAL\|0x400)
	Processor, DSP.

#define	A4L_SUBD_SERIAL (A4L_SUBD_MASK_SPECIAL\|0x800)
	Serial IO subdevice.

#define	A4L_SUBD_TYPES
	Mask which gathers all the types.

Subdevice features
Flags to define the subdevice's capabilities
#define	A4L_SUBD_CMD 0x1000
	The subdevice can handle command (i.e it can perform asynchronous acquisition)

#define	A4L_SUBD_MMAP 0x8000
	The subdevice support mmap operations (technically, any driver can do it; however, the developer might want that his driver must be accessed through read / write.

Subdevice status
Flags to define the subdevice's status
#define	A4L_SUBD_BUSY_NR 0
	The subdevice is busy, a synchronous or an asynchronous acquisition is occuring.

#define	A4L_SUBD_BUSY (1 << A4L_SUBD_BUSY_NR)
	The subdevice is busy, a synchronous or an asynchronous acquisition is occuring.

#define	A4L_SUBD_CLEAN_NR 1
	The subdevice is about to be cleaned in the middle of the detach procedure.

#define	A4L_SUBD_CLEAN (1 << A4L_SUBD_CLEAN_NR)
	The subdevice is busy, a synchronous or an asynchronous acquisition is occuring.

Instruction type
Flags to define the type of instruction
#define	A4L_INSN_READ (0 \| A4L_INSN_MASK_READ)
	Read instruction.

#define	A4L_INSN_WRITE (1 \| A4L_INSN_MASK_WRITE)
	Write instruction.

#define	A4L_INSN_BITS
	"Bits" instruction

#define	A4L_INSN_CONFIG
	Configuration instruction.

#define	A4L_INSN_GTOD
	Get time instruction.

#define	A4L_INSN_WAIT
	Wait instruction.

#define	A4L_INSN_INTTRIG
	Trigger instruction (to start asynchronous acquisition)

Configuration instruction type
Values to define the type of configuration instruction
Counter status bits
Status bits for INSN_CONFIG_GET_COUNTER_STATUS
IO direction
Values to define the IO polarity
Events types
Values to define the Analogy events. They might used to send some specific events through the instruction interface.

Detailed Description

Analogy for Linux, UAPI bits.

Note: Copyright (C) 1997-2000 David A. Schleef ds@sc.nosp@m.hlee.nosp@m.f.org; Copyright (C) 2008 Alexis Berlemont alexi.nosp@m.s.be.nosp@m.rlemo.nosp@m.nt@f.nosp@m.ree.f.nosp@m.r

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This library 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 Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.

Macro Definition Documentation

◆ A4L_RNG_FACTOR

#define A4L_RNG_FACTOR 1000000

Constant for internal use only (must not be used by driver developer).

Data Structures

Macros

Detailed Description

Macro Definition Documentation

◆ A4L_RNG_FACTOR