RTT::AnalogOutInterface Class Reference
[Device Interfaces]

An interface for writing analog output, like for addressing a whole subdevice in comedi. More...

#include <rtt/dev/AnalogOutInterface.hpp>

Inheritance diagram for RTT::AnalogOutInterface:

Public Types
enum	AnalogReference { Ground = 0, Common, Differential, Other }
	This enum can be used to configure the arefSet() function. More...
Public Member Functions
	AnalogOutInterface ()
	Create a not nameserved AnalogOutInterface instance.
	AnalogOutInterface (const std::string &name)
	Create a nameserved AnalogOutInterface.
virtual void	rangeSet (unsigned int chan, unsigned int range)=0
	Set the range of a particular channel.
virtual void	arefSet (unsigned int chan, unsigned int aref)=0
	Set the analog reference of a particular channel.
virtual int	rawWrite (unsigned int chan, int value)=0
	Write a raw value to channel chan.
virtual int	rawRead (unsigned int chan, int &value)=0
	Read the current raw value from channel chan.
virtual unsigned int	rawRange () const =0
	Returns the absolute raw range (e.g.
virtual int	write (unsigned int chan, double value)=0
	Write a MU value to channel chan.
virtual int	read (unsigned int chan, double &value)=0
	Read the current MU value from channel chan.
virtual double	lowest (unsigned int chan) const =0
	Returns the current lowest measurable input expressed in MU's for a given channel.
virtual double	highest (unsigned int chan) const =0
	Returns the highest measurable input expressed in MU's for a given channel.
virtual double	resolution (unsigned int chan) const =0
	Resolution is expressed in bits / MU.
virtual unsigned int	nbOfChannels () const =0
	Returns the total number of channels.
unsigned int	binaryRange () const
	Returns the binary range (e.g.
int	binaryLowest () const
	Returns the binary lowest value.
int	binaryHighest () const
	Returns the binary highest value.
Static Public Attributes
static NameServer < AnalogOutInterface * >	nameserver
	The NameServer for this interface.

Detailed Description

An interface for writing analog output, like for addressing a whole subdevice in comedi.

Measurement Unit (MU) : Unit of what is actually read on the analog channel (e.g. Volt)

Definition at line 67 of file AnalogOutInterface.hpp.

Member Enumeration Documentation

enum RTT::AnalogOutInterface::AnalogReference

This enum can be used to configure the arefSet() function.

See also:: http://www.comedi.org

Enumerator:

Common

Reference to ground.

Differential

Common reference.

Other

Differential reference.

Undefined

Definition at line 76 of file AnalogOutInterface.hpp.

Constructor & Destructor Documentation

RTT::AnalogOutInterface::AnalogOutInterface ( const std::string & name ) [inline]

Create a nameserved AnalogOutInterface.

When name is not "" and unique, it can be retrieved using the AnalogOutInterface::nameserver.

Definition at line 92 of file AnalogOutInterface.hpp.

Member Function Documentation

virtual void RTT::AnalogOutInterface::arefSet	(	unsigned int	chan,
		unsigned int	aref
	)			`[pure virtual]`

Set the analog reference of a particular channel.

We took (for now) the comedi API for this, where every aref (eg. Analog reference set to ground (aka AREF_GROUND) corresponds to an unsigned int.

See also:: AnalogReference.

int RTT::AnalogOutInterface::binaryHighest ( ) const [inline]

Returns the binary highest value.

Deprecated:: Do not use. Should return rawRange() in all implementations.

Definition at line 184 of file AnalogOutInterface.hpp.

int RTT::AnalogOutInterface::binaryLowest ( ) const [inline]

Returns the binary lowest value.

Deprecated:: Do not use. Should return zero in all implementations.

Definition at line 178 of file AnalogOutInterface.hpp.

unsigned int RTT::AnalogOutInterface::binaryRange ( ) const [inline]

Returns the binary range (e.g.

12bits DA -> 4096)

Deprecated:: by rawRange()

Definition at line 172 of file AnalogOutInterface.hpp.

virtual void RTT::AnalogOutInterface::rangeSet	(	unsigned int	chan,
		unsigned int	range
	)			`[pure virtual]`

Set the range of a particular channel.

We took (for now) the comedi API for this, where every range (eg. -5/+5 V) corresponds to an unsigned int. You should provide a mapping from that int to a particular range in your driver documentation

virtual unsigned int RTT::AnalogOutInterface::rawRange ( ) const [pure virtual]

Returns the absolute raw range (e.g.

12bits DA -> 4096)

virtual int RTT::AnalogOutInterface::rawWrite	(	unsigned int	chan,
		int	value
	)			`[pure virtual]`

Write a raw value to channel chan.

Returns:: 0 on success.

virtual int RTT::AnalogOutInterface::write	(	unsigned int	chan,
		double	value
	)			`[pure virtual]`

Write a MU value to channel chan.

Returns:: 0 on success.

Member Data Documentation

NameServer<AnalogOutInterface*> RTT::AnalogOutInterface::nameserver [static]

The NameServer for this interface.

See also:: NameServer

Definition at line 190 of file AnalogOutInterface.hpp.

The documentation for this class was generated from the following file:

rtt/dev/AnalogOutInterface.hpp

RTT::AnalogOutInterface Class Reference [Device Interfaces]

Public Types