Field Detail

• m_port

  protected ByteBuffer m_port

  Where the analog trigger is attached

• m_index

  protected int m_index

Constructor Detail

• AnalogTrigger

  public AnalogTrigger(int channel)

  Constructor for an analog trigger given a channel number.

  Parameters:

  channel - the port to use for the analog trigger 0-3 are on-board, 4-7 are on the MXP port

• AnalogTrigger

  public AnalogTrigger(AnalogInput channel)

  Construct an analog trigger given an analog channel. This should be used in the case of sharing an analog channel between the trigger and an analog input object.

  Parameters:

  channel - the AnalogInput to use for the analog trigger

Method Detail

• initTrigger

  protected void initTrigger(int channel)

  Initialize an analog trigger from a channel.

  Parameters:

  channel - the port to use for the analog trigger

• free

  public void free()

  Release the resources used by this object

• setLimitsRaw

  public void setLimitsRaw(int lower,
                           int upper)

  Set the upper and lower limits of the analog trigger. The limits are given in ADC codes. If oversampling is used, the units must be scaled appropriately.

  Parameters:

  lower - the lower raw limit

  upper - the upper raw limit

• setLimitsVoltage

  public void setLimitsVoltage(double lower,
                               double upper)

  Set the upper and lower limits of the analog trigger. The limits are given as floating point voltage values.

  Parameters:

  lower - the lower voltage limit

  upper - the upper voltage limit

• setAveraged

  public void setAveraged(boolean useAveragedValue)

  Configure the analog trigger to use the averaged vs. raw values. If the value is true, then the averaged value is selected for the analog trigger, otherwise the immediate value is used.

  Parameters:

  useAveragedValue - true to use an averaged value, false otherwise

• setFiltered

  public void setFiltered(boolean useFilteredValue)

  Configure the analog trigger to use a filtered value. The analog trigger will operate with a 3 point average rejection filter. This is designed to help with 360 degree pot applications for the period where the pot crosses through zero.

  Parameters:

  useFilteredValue - true to use a filterd value, false otherwise

• getIndex

  public int getIndex()

  Return the index of the analog trigger. This is the FPGA index of this analog trigger instance.

  Returns:

  The index of the analog trigger.

• getInWindow

  public boolean getInWindow()

  Return the InWindow output of the analog trigger. True if the analog input is between the upper and lower limits.

  Returns:

  The InWindow output of the analog trigger.

• getTriggerState

  public boolean getTriggerState()

  Return the TriggerState output of the analog trigger. True if above upper limit. False if below lower limit. If in Hysteresis, maintain previous state.

  Returns:

  The TriggerState output of the analog trigger.