Package lejos.hardware.sensor

Class AnalogSensor

java.lang.Object

lejos.hardware.Device

lejos.hardware.sensor.BaseSensor

lejos.hardware.sensor.AnalogSensor

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, SensorConstants, SensorMode, SensorModes, SampleProvider

Direct Known Subclasses:

DexterLaserSensor, DexterPressureSensor250, DexterPressureSensor500, EV3TouchSensor, HiTechnicEOPD, HiTechnicGyro, HiTechnicMagneticSensor, NXTColorSensor, NXTLightSensor, NXTSoundSensor, NXTTouchSensor, RCXLightSensor, RCXRotationSensor, RCXThermometer, SumoEyesSensor, TouchMUX

public class AnalogSensor
extends BaseSensor
implements SensorConstants

Base class for analog sensor drivers

Author:

andy

Field Summary

Fields

Modifier and Type	Field	Description
protected int	currentType
protected AnalogPort	port

Fields inherited from class lejos.hardware.sensor.BaseSensor

currentMode, modes

Fields inherited from class lejos.hardware.Device

closeList

Fields inherited from interface lejos.hardware.sensor.SensorConstants

BLACK, BLANK_INDEX, BLUE, BLUE_INDEX, BROWN, GREEN, GREEN_INDEX, MAX_TYPE, MIN_TYPE, MODE_RAW, NXT_ADC_RES, RED, RED_INDEX, TYPE_ANGLE, TYPE_COLORBLUE, TYPE_COLORFULL, TYPE_COLORGREEN, TYPE_COLORNONE, TYPE_COLORRED, TYPE_CUSTOM, TYPE_HIGHSPEED, TYPE_HIGHSPEED_9V, TYPE_HISPEED, TYPE_LIGHT_ACTIVE, TYPE_LIGHT_INACTIVE, TYPE_LOWSPEED, TYPE_LOWSPEED_9V, TYPE_NO_SENSOR, TYPE_REFLECTION, TYPE_SOUND_DB, TYPE_SOUND_DBA, TYPE_SWITCH, TYPE_TEMPERATURE, WHITE, YELLOW

Constructor Summary

Constructors

Constructor	Description
AnalogSensor(AnalogPort p)
AnalogSensor(Port p)
AnalogSensor(Port p, int type, int mode)

Method Summary

Modifier and Type	Method	Description
protected float	normalize(float val)	Helper method.
protected int	NXTRawIntValue(float val)	Return the equivalent NXT RAW sensor reading to the given voltage
protected float	NXTRawValue(float val)	Return the equivalent NXT RAW sensor reading to the given voltage
protected void	switchType(int newType, long switchDelay)	Switch to the selected type (if not already in that type) and delay for the specified period to allow the sensor to settle in the new state.

Methods inherited from class lejos.hardware.sensor.BaseSensor

fetchSample, getAvailableModes, getCurrentMode, getMode, getMode, getModeCount, getName, sampleSize, setCurrentMode, setCurrentMode, setModes

Methods inherited from class lejos.hardware.Device

close, releaseOnClose

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

port

protected AnalogPort port

currentType

protected int currentType

Constructor Detail

AnalogSensor

public AnalogSensor(AnalogPort p)

AnalogSensor

public AnalogSensor(Port p,
                    int type,
                    int mode)

AnalogSensor

public AnalogSensor(Port p)

Method Detail

normalize

protected float normalize(float val)

Helper method. Take a voltage and return it as a normalized value in the range 0.0-1.0

Parameters:

val - input value

Returns:

normalized value

NXTRawValue

protected float NXTRawValue(float val)

Return the equivalent NXT RAW sensor reading to the given voltage

Parameters:

val - ADC voltage

Returns:

The reading that would be returned on the NXT

NXTRawIntValue

protected int NXTRawIntValue(float val)

Return the equivalent NXT RAW sensor reading to the given voltage

Parameters:

val - ADC voltage

Returns:

The reading that would be returned on the NXT

switchType

protected void switchType(int newType,
                          long switchDelay)

Switch to the selected type (if not already in that type) and delay for the specified period to allow the sensor to settle in the new state.
NOTE: This method is intended for use with NXT sensor drivers that use a sensor type to specify the operating mode.

Parameters:

newType - The type to switch to.

switchDelay - Time in mS to delay after the switch.