OutputBits (JMRI API)

java.lang.Object
- jmri.jmrix.maple.OutputBits

```
public class OutputBits
extends java.lang.Object
```
Utility Class supporting output to Maple HMI's
All of the Maple HMI panels receive the same output bits. This keeps them synchronized. Output is sent in "broadcast" mode to Station Address 0. All HMI's receive the output. Output is sent at the end of each polling cycle, whether or not anything has changed. That way, if an HMI panel is plugged in, it will be up-to-date within one polling cycle. Serial systems with unique output bits for each node keep their output array in each node. That code has been moved to this utility class for Maple Systems because all nodes share the same output bits. Coil bits within Maple Systems HMI's are divided into input (1-1000) and output (1001-9000), so input bits are read starting from HMI address 1, and output bits are written starting at HMI address 1001.

Field Summary

Fields
Modifier and Type Field Description

protected byte[] outputArray

Constructor Summary

Constructors
Constructor Description

OutputBits(SerialTrafficController _tc)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`SerialMessage`	`createOutPacket(int startBitNum, int endBitNum)`	Create a Transmit packet (SerialMessage).
`static int`	`getNumOutputBits()`
`boolean`	`getOutputBit(int bitNumber)`	Get the current state of an output bit.
`static int`	`getSendDelay()`
`static void`	`setNumOutputBits(int n)`
`void`	`setOutputBit(int bitNumber, boolean state)`	Set an output bit.
`static void`	`setSendDelay(int n)`

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

- Field Detail
  - outputArray
```
protected byte[] outputArray
```
- Constructor Detail
  - OutputBits
```
public OutputBits(SerialTrafficController _tc)
```
- Method Detail
  - setNumOutputBits
```
public static void setNumOutputBits(int n)
```
  - getNumOutputBits
```
public static int getNumOutputBits()
```
  - setSendDelay
```
public static void setSendDelay(int n)
```
  - getSendDelay
```
public static int getSendDelay()
```
  - setOutputBit
```
public void setOutputBit(int bitNumber,
                         boolean state)
```
    Set an output bit.
    Note: state = 'true' for 0, 'false' for 1. Bits are numbered from 1 (not 0)
    
    Parameters:
    
    bitNumber - bit index number starting from 1.
    
    state - true for 0, false for 1.
  - getOutputBit
```
public boolean getOutputBit(int bitNumber)
```
    Get the current state of an output bit.
    Bits are numbered from 1 (not 0).
    
    Parameters:
    
    bitNumber - bit number to check, index starts at 1.
    
    Returns:
    
    'true' for 0, 'false' for 1
  - createOutPacket
```
public SerialMessage createOutPacket(int startBitNum,
                                     int endBitNum)
```
    Create a Transmit packet (SerialMessage).
    
    Parameters:
    
    startBitNum - start bit number.
    
    endBitNum - end bit number.
    
    Returns:
    
    serial message.