Package NMEA

Class AcquireNmeaData

java.lang.Object

PamguardMVC.PamProcess

NMEA.AcquireNmeaData

All Implemented Interfaces:

ActionListener, EventListener, ModuleStatusManager, PamObserver, ProcessAnnotator

public class AcquireNmeaData
extends PamProcess
implements ActionListener, ModuleStatusManager

Author:

Doug Gillespie, Dave McLaren, Paul Redmond

PamProcess for NMEA data acquisition.

Method Summary

Modifier and Type	Method	Description
void	actionPerformed(ActionEvent event)
static byte	createStringChecksum(StringBuffer nmeaString)	Calculate the correct string buffer for an NMEA sentence.
long	firstRequiredTime(PamObservable o, Object arg)
NMEADataBlock	getOutputDatablock()
ModuleStatus	getStatus()
static byte	getStringChecksum(StringBuffer nmeaString)	Gets the checksum from the end of a string.
void	makeMulticastThread()
void	makeSerialThread()
void	makeSimThread()
void	makeUdpThread()
void	noteNewSettings()
void	pamStart()	Called for each process to tell it to start (may not be necessary for processes which are listening for data anyway).
void	pamStop()	Stops the process.
void	setSampleRate(float sampleRate, boolean notify)	New sample rate
void	startNmeaSource(NMEAParameters.NmeaSources sourceType)

Methods inherited from class PamguardMVC.PamProcess

absMillisecondsToSamples, absSamplesToMilliseconds, addData, addMultiPlexDataBlock, addOutputDataBlock, changedThreading, clearOldData, createAnnotations, destroyProcess, dumpBufferStatus, flushDataBlockBuffers, getAncestorDataBlock, getAnnotation, getChainPosition, getCompatibleDataUnits, getCpuPercent, getFrequencyRange, getLastSourceNotificationObject, getLastSourceNotificationType, getMuiltiplexDataBlock, getNumAnnotations, getNumMuiltiplexDataBlocks, getNumOutputDataBlocks, getObserverName, getObserverObject, getOfflineData, getOfflineData, getOutputDataBlock, getOutputDataBlocks, getPamControlledUnit, getParentDataBlock, getParentDataBlocks, getParentProcess, getProcessCheck, getProcessName, getRawSourceDataBlock, getRawSourceDataBlock, getRequiredDataHistory, getSampleRate, getSourceDataBlock, getSourceProcess, hasOutputDatablock, isCanMultiThread, isExternalProcess, isMultiplex, makePamProcess, masterClockUpdate, newData, notifyModelChanged, prepareProcess, prepareProcessOK, processNewBuoyData, receiveSourceNotification, relMillisecondsToSamples, relSamplesToMilliseconds, removeAllDataBlocks, removeAllMultiPlexDataBlocks, removeMultiPlexDataBlock, removeObservable, removeOutputDatablock, resetDataBlocks, saveViewerData, setCanMultiThread, setExternalProcess, setMultiplex, setParentDataBlock, setParentDataBlock, setProcessCheck, setProcessName, setupProcess, toString, updateData

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Details

makeSimThread

public void makeSimThread()

makeUdpThread

public void makeUdpThread()

makeMulticastThread

public void makeMulticastThread()

makeSerialThread

public void makeSerialThread()

startNmeaSource

public void startNmeaSource(NMEAParameters.NmeaSources sourceType)

actionPerformed

public void actionPerformed(ActionEvent event)

Specified by:

actionPerformed in interface ActionListener

createStringChecksum

public static byte createStringChecksum(StringBuffer nmeaString)

Calculate the correct string buffer for an NMEA sentence.

The checksum is an exclusive OR of all characters between, but not including the first ($ or !) and the * preceding the checksum

Parameters:

nmeaString - NMEA sentence

Returns:

checksum value.

getStringChecksum

public static byte getStringChecksum(StringBuffer nmeaString)

Gets the checksum from the end of a string. The is the two characters that follow the *

Parameters:

nmeaString - NMEA string

Returns:

Checksum value

noteNewSettings

public void noteNewSettings()

Specified by:

noteNewSettings in interface PamObserver

Overrides:

noteNewSettings in class PamProcess

firstRequiredTime

public long firstRequiredTime(PamObservable o,
 Object arg)

setSampleRate

public void setSampleRate(float sampleRate,
 boolean notify)

Description copied from interface: PamObserver

New sample rate

Specified by:

setSampleRate in interface PamObserver

Overrides:

setSampleRate in class PamProcess

Parameters:

notify - Notify other PamObservers and PamObservables in the chain.

pamStart

public void pamStart()

Description copied from class: PamProcess

Called for each process to tell it to start (may not be necessary for processes which are listening for data anyway).

Specified by:

pamStart in class PamProcess

pamStop

public void pamStop()

Description copied from class: PamProcess

Stops the process.

Specified by:

pamStop in class PamProcess

getOutputDatablock

public NMEADataBlock getOutputDatablock()

Returns:

Returns the outputDatablock.

getStatus

public ModuleStatus getStatus()

Specified by:

getStatus in interface ModuleStatusManager