ComediEncoder Class Reference

A class for reading an encoder using the comedi hardware abstraction layer. More...

#include <ComediEncoder.hpp>

List of all members.

Public Member Functions
	ComediEncoder (ComediDevice *cd, unsigned int subd, const std::string &name)
	Create a nameserved encoder.
	ComediEncoder (ComediDevice *cd, unsigned int subd)
	Create an encoder.
virtual int	positionGet () const
virtual int	turnGet () const
virtual void	positionSet (int p)
virtual void	turnSet (int t)
virtual int	resolution () const
virtual bool	upcounting () const
Protected Member Functions
void	init ()
Protected Attributes
ComediDevice *	_myCard
unsigned int	_subDevice
int	_turn
int	_resolution
bool	_upcounting

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Detailed Description

A class for reading an encoder using the comedi hardware abstraction layer.

Tested with the NI660X card.

Todo:

Currently this wrapper does not support all functionality. It always uses X4 encoding (maximum resolution), you cannot choose when to take into account the indexpulse or reset the counter when the index pulse arrives. Also see the Comedi gpct_encoder.c demo program

subdevice locking

Bug:

upcounting is always true

Note:

The current implementation does not consider the _turn parameter, since an overflow of the 32 bit register is unlikely to occur in our case.

Definition at line 44 of file ComediEncoder.hpp.

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Constructor & Destructor Documentation

ComediEncoder	(	ComediDevice *	cd,
		unsigned int	subd,
		const std::string &	name
	)

Create a nameserved encoder.

Parameters:

	cd	The comedi device your are using
	subd	The comedi subdevice where the COUNTER is situated.

Definition at line 30 of file ComediEncoder.cpp.

ComediEncoder	(	ComediDevice *	cd,
		unsigned int	subd
	)

Create an encoder.

Parameters:

	cd	The comedi device your are using
	subd	The comedi subdevice where the COUNTER is situated.

Definition at line 38 of file ComediEncoder.cpp.

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

• ComediEncoder.hpp
• ComediEncoder.cpp