ch.unizh.ini.jaer.chip.dvs320
Class DVS320.DVS320Biasgen

java.lang.Object
  net.sf.jaer.biasgen.Biasgen
      ch.unizh.ini.jaer.chip.dvs320.DVS320.DVS320Biasgen

All Implemented Interfaces:

java.util.Observer, BiasgenHardwareInterface, BiasgenPreferences, HardwareInterface

Enclosing class:

DVS320

public class DVS320.DVS320Biasgen
extends Biasgen

Describes ConfigurableIPots on DVS320 retina chip as well as the other configuration bits which control, for example, which outputs are selected. These are all configured by a single shared shift register.

The pr, foll, and refr biases use the lowpower bias for their p src bias and the pr, foll and refr pfets all have their psrcs wired to this shifted p src bias. Also, the pr, foll and refr biases also drive the same shifted psrc bias with their own shifted psrc bias. Therefore all 4 of these biases (pr, foll, refr, and lowpower) should have the same bufferbias bits. This constraint is enforced by software.

The output configuration bits follow the bias values and consist of 12 bits that select 3 outputs.

Bits 0-3 select the current output.

5 copies of digital Bits 4-8 select the digital output.

Bits

Author:

tobi

Nested Class Summary

Nested classes/interfaces inherited from class net.sf.jaer.biasgen.Biasgen

Biasgen.HasPreference

Field Summary

float	MAX_DIFF_ON_CURRENT
float	MIN_DIFF_OFF_CURRENT
float	MIN_THRESHOLD_RATIO the minimum on/diff or diff/off current allowed by decreaseThreshold
float	RATIO the change in current from an increase* or decrease* call

Fields inherited from class net.sf.jaer.biasgen.Biasgen

hardwareInterface, potArray

Constructor Summary

DVS320.DVS320Biasgen(Chip chip)
Creates a new instance of DVS320Biasgen for DVS320 with a given hardware interface

Method Summary

javax.swing.JPanel	buildControlPanel() Overrides the default method to add the custom control panel for configuring the DVS320 output muxes.
void	decreaseBandwidth()
void	decreaseRefractoryPeriod()
void	decreaseThreshold()
byte[]	formatConfigurationBytes(Biasgen biasgen) This method formats and returns a byte array of configuration information (e.g.
void	increaseBandwidth()
void	increaseRefractoryPeriod()
void	increaseThreshold()
void	loadPreferences() Loads preferences for the potArray and masterbias.
void	moreOFFType()
void	moreONType()
void	storePreferences() Stores preferences to the Preferences node for the potArray and masterbias.

Methods inherited from class net.sf.jaer.biasgen.Biasgen

close, endBatchEdit, exportPreferences, flashConfiguration, getChip, getControlPanel, getHardwareInterface, getIPotGroups, getMasterbias, getName, getNumPots, getPotArray, getPotByName, getPotByNumber, getTypeName, importPreferences, isBatchEditOccurring, isInitialized, isOpen, open, putPref, putPref, putPref, putPref, putPref, resume, sendConfiguration, setBatchEditOccurring, setChip, setControlPanel, setHardwareInterface, setIPotGroups, setMasterbias, setName, setPotArray, setPowerDown, showUnitializedBiasesWarningDialog, startBatchEdit, suspend, toString, update

Methods inherited from class java.lang.Object

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

Field Detail

RATIO

public final float RATIO

the change in current from an increase* or decrease* call

See Also:

Constant Field Values

MIN_THRESHOLD_RATIO

public final float MIN_THRESHOLD_RATIO

the minimum on/diff or diff/off current allowed by decreaseThreshold

See Also:

Constant Field Values

MAX_DIFF_ON_CURRENT

public final float MAX_DIFF_ON_CURRENT

See Also:

Constant Field Values

MIN_DIFF_OFF_CURRENT

public final float MIN_DIFF_OFF_CURRENT

See Also:

Constant Field Values

Constructor Detail

DVS320.DVS320Biasgen

public DVS320.DVS320Biasgen(Chip chip)

Creates a new instance of DVS320Biasgen for DVS320 with a given hardware interface

Parameters:

chip - the chip this biasgen belongs to

Method Detail

loadPreferences

public void loadPreferences()

Description copied from class: Biasgen

Loads preferences for the potArray and masterbias. Subclasses should override this method to load additional information.

Specified by:

loadPreferences in interface BiasgenPreferences

Overrides:

loadPreferences in class Biasgen

storePreferences

public void storePreferences()

Description copied from class: Biasgen

Stores preferences to the Preferences node for the potArray and masterbias. Subclasses must override this method to store additional information!!! For example, a subclass that defines additional configuration information should call storePreferences explicitly for additional configuration.

Specified by:

storePreferences in interface BiasgenPreferences

Overrides:

storePreferences in class Biasgen

buildControlPanel

public javax.swing.JPanel buildControlPanel()

Overrides the default method to add the custom control panel for configuring the DVS320 output muxes.

Overrides:

buildControlPanel in class Biasgen

Returns:

a new panel for controlling this bias generator functionally

formatConfigurationBytes

public byte[] formatConfigurationBytes(Biasgen biasgen)

Description copied from class: Biasgen

This method formats and returns a byte array of configuration information (e.g. biases, scanner or diagnostic bits) that can be sent over the hardware interface using Biasgen.sendConfiguration(net.sf.jaer.biasgen.Biasgen). This method delegates the task of formatting these bytes to the Biasgen object rather than the more generic HardwareInterface.

A Biasgen can override this method to customize the bytes that are sent. The default implementation asks the BiasgenHardwareInterface for the bytes.

Specified by:

formatConfigurationBytes in interface BiasgenHardwareInterface

Overrides:

formatConfigurationBytes in class Biasgen

Parameters:

biasgen - source of the configuration

Returns:

array of bytes to be sent.

increaseThreshold

public void increaseThreshold()

decreaseThreshold

public void decreaseThreshold()

increaseRefractoryPeriod

public void increaseRefractoryPeriod()

decreaseRefractoryPeriod

public void decreaseRefractoryPeriod()

increaseBandwidth

public void increaseBandwidth()

decreaseBandwidth

public void decreaseBandwidth()

moreONType

public void moreONType()

moreOFFType

public void moreOFFType()