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LptNote Class Reference

Implementation using PC LPT port to ring a bell for a single note. More...

#include <lptnote.h>

Inheritance diagram for LptNote:

List of all members.

Public Methods
	LptNote (int newPortNumber, int newPortBit)
	Constructor. More...
virtual	~LptNote ()
	Destructor. More...
virtual void	sound () const throw (Monitor::Utility::Note::Busy)
	Sound once. More...
Private Methods
void	switchOff () const
	Switch off the output bit. More...
Private Attributes
int	lptPort
	Address LPT port to use. More...
unsigned char	bitOn
	Bitmasks to use. More...
unsigned char	bitOff
unsigned char	originalControlPort
	Saved LPT port settings. More...
unsigned char	originalExtendedControlPort
Static Private Attributes
int	busy = 0
	Class variable used to indicate PC LPT is in use, cannot be used concurrently by more than one Note instance. More...

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Detailed Description

Implementation using PC LPT port to ring a bell for a single note.

Definition at line 46 of file lptnote.h.

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Constructor & Destructor Documentation

LptNote::LptNote (  int    newPortNumber, int    newPortBit )

Constructor. Parameters: newLptNumber  Number of LPT port to use. newLptBit  Bit of LPT port to use. Definition at line 53 of file lptnote.cpp. References _USEMYTRACE_, bitOff, bitOn, lptPort, originalControlPort, and originalExtendedControlPort.

LptNote::~LptNote (    )  [virtual]

Destructor. Definition at line 82 of file lptnote.cpp. References _USEMYTRACE_, lptPort, originalControlPort, and originalExtendedControlPort.

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Member Function Documentation

void LptNote::sound (    )  const throw (Monitor::Utility::Note::Busy) [virtual]

Sound once. Exceptions: Note::Busy  Unable to sound. Implements Monitor::Utility::Note. Definition at line 99 of file lptnote.cpp. References _USEMYTRACE_, and switchOff.

void LptNote::switchOff (    )  const [private]

Switch off the output bit. Definition at line 126 of file lptnote.cpp. References _USEMYTRACE_, bitOff, busy, and lptPort. Referenced by sound.

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Member Data Documentation

unsigned char LptNote::bitOff [private]

Definition at line 94 of file lptnote.h. Referenced by LptNote, and switchOff.

unsigned char LptNote::bitOn [private]

Bitmasks to use. Definition at line 93 of file lptnote.h. Referenced by LptNote.

int LptNote::busy = 0 [static, private]

Class variable used to indicate PC LPT is in use, cannot be used concurrently by more than one Note instance. Definition at line 50 of file lptnote.cpp. Referenced by switchOff.

int LptNote::lptPort [private]

Address LPT port to use. Definition at line 88 of file lptnote.h. Referenced by LptNote, switchOff, and ~LptNote.

unsigned char LptNote::originalControlPort [private]

Saved LPT port settings. Definition at line 99 of file lptnote.h. Referenced by LptNote, and ~LptNote.

unsigned char LptNote::originalExtendedControlPort [private]

Definition at line 100 of file lptnote.h. Referenced by LptNote, and ~LptNote.

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