NceAIU (JMRI API)

java.lang.Object
- jmri.jmrix.nce.NceAIU

```
public class NceAIU
extends java.lang.Object
```
Model an NCE AIU
These AIUs are numbered ala the cab bus, from 1 to 63. AIU number 1 carries sensors 1 to 14; AIU 2 from 17 to 30, etc.
The array of sensor states is used to update sensor known state only when there's a change on the cab bus. This allows for the sensor state to be updated within the program, keeping this updated state until the next change on the cab bus. E.g. you can manually change a state via an icon, and not have it change back the next time that AIU is polled.

Field Summary

Fields
Modifier and Type Field Description

(package private) int lastAIUValue

(package private) Sensor[] sensorArray

(package private) int[] sensorLastSetting

Constructor Summary

Constructors
Constructor Description

NceAIU()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Sensor`	`getSensor(int index)`	Return the sensor object for the specified AIU
`void`	`markChanges(int bits)`
`void`	`registerSensor(Sensor s, int i)`	The numbers here are 0 to 15, not 1 to 16
`void`	`sensorChange(int offset, int newState)`	set state of a single sensor based on AIU input

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - sensorArray
```
Sensor[] sensorArray
```
  - sensorLastSetting
```
int[] sensorLastSetting
```
  - lastAIUValue
```
int lastAIUValue
```
- Constructor Detail
  - NceAIU
```
public NceAIU()
```
- Method Detail
  - markChanges
```
public void markChanges(int bits)
```
    Parameters:
    
    bits - int value of response from poll command
  - sensorChange
```
public void sensorChange(int offset,
                         int newState)
```
    set state of a single sensor based on AIU input
    
    Parameters:
    
    offset - sensor number within the current array
    
    newState - new state (Sensor.ACTIVE / .INACTIVE)
  - registerSensor
```
public void registerSensor(Sensor s,
                           int i)
```
    The numbers here are 0 to 15, not 1 to 16
    
    Parameters:
    
    s - bit within the AIU card
    
    i - index for AIU card
  - getSensor
```
public Sensor getSensor(int index)
```
    Return the sensor object for the specified AIU
    
    Parameters:
    
    index - AIU index (0..15)
    
    Returns:
    
    sensor object