com.dalsemi.comm
Class SerialInputStream

java.lang.Object
  |
  +--java.io.InputStream
        |
        +--com.dalsemi.comm.SerialInputStream

public class SerialInputStream

extends java.io.InputStream

A Serial input stream is an input stream for reading data from an serial port.

Method Summary

int	available() Returns the number of bytes that can be read from this input stream without blocking.
void	close() Closes this Serial input stream and releases any system resources associated with the stream.
protected void	disableReceiveThreshold()
protected void	disableReceiveTimeout()
protected void	enableReceiveThreshold(int thresh)
protected void	enableReceiveTimeout(int thresh)
protected int	getReceiveThreshold()
protected int	getReceiveTimeout()
protected boolean	isReceiveThresholdEnabled()
protected boolean	isReceiveTimeoutEnabled()
protected void	open() Opens the Serial input stream for reading.
int	read() Reads the next byte of data from this input stream.
int	read(byte[] barr, int offset, int len) Reads the number of bytes requested from this input stream.

Methods inherited from class java.io.InputStream

mark, markSupported, read, reset, skip

Methods inherited from class java.lang.Object

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

Method Detail

open

protected void open()
             throws java.io.IOException

Opens the Serial input stream for reading.

Throws:

java.io.IOException - if an I/O error occurs.

read

public int read()
         throws java.io.IOException

Reads the next byte of data from this input stream. The value byte is returned as an int in the range 0 to 255. If no byte is available because the end of the stream has been reached, the value -1 is returned. This method blocks until input data is available, the end of the stream is detected, or an exception is thrown.

Overrides:

read in class java.io.InputStream

Returns:

the next byte of data, or -1 if the end of the stream is reached.

Throws:

java.io.IOException - if an I/O error occurs.

read

public int read(byte[] barr,
                int offset,
                int len)
         throws java.io.IOException

Reads the number of bytes requested from this input stream. If no byte is available because the end of the stream has been reached, the value -1 is returned. This method blocks until input data is available, the end of the stream is detected, or an exception is thrown.

Overrides:

read in class java.io.InputStream

Parameters:

barr - the array to be filled.

offset - the offset to begin writting in the array.

len - the number of bytes requested.

Returns:

the number of bytes read or -1 if the end of the stream has been reached.

Throws:

java.io.IOException -

See Also:

close

public void close()
           throws java.io.IOException

Closes this Serial input stream and releases any system resources associated with the stream.

Overrides:

close in class java.io.InputStream

Throws:

java.io.IOException - if an I/O error occurs.

available

public int available()
              throws java.io.IOException

Returns the number of bytes that can be read from this input stream without blocking. The available method of InputStream returns 0. This method should be overridden by subclasses.

Overrides:

available in class java.io.InputStream

Returns:

the number of bytes that can be read from this input stream without blocking.

Throws:

java.io.IOException - if an I/O error occurs.

enableReceiveThreshold

protected void enableReceiveThreshold(int thresh)
                               throws javax.comm.UnsupportedCommOperationException

getReceiveThreshold

protected int getReceiveThreshold()

disableReceiveThreshold

protected void disableReceiveThreshold()

isReceiveThresholdEnabled

protected boolean isReceiveThresholdEnabled()

enableReceiveTimeout

protected void enableReceiveTimeout(int thresh)
                             throws javax.comm.UnsupportedCommOperationException

getReceiveTimeout

protected int getReceiveTimeout()

disableReceiveTimeout

protected void disableReceiveTimeout()

isReceiveTimeoutEnabled

protected boolean isReceiveTimeoutEnabled()