jcontrol.comm
Class RS232

java.lang.Object
  jcontrol.comm.UART
      jcontrol.comm.RS232

All Implemented Interfaces:

ConsoleInputStream, ConsoleOutputStream, BasicInputStream, BasicOutputStream

public class RS232
extends UART
implements ConsoleOutputStream, ConsoleInputStream

Implements RS232 communication for JControl.

Field Summary

Fields inherited from class jcontrol.comm.UART

PARAMS_ECHO, PARAMS_FLOWCONTROL_RTSCTS, PARAMS_FLOWCONTROL_XONXOFF, PARAMS_MULTIDROP_ADDRESS, PARAMS_MULTIDROP_DATA, PARAMS_PARITY_EVEN, PARAMS_PARITY_MASK, PARAMS_PARITY_ODD, PORT_RS232_0, PORT_RS232_1, PORT_RS232_2, PORT_RS232_3, PORT_RS422_0, PORT_RS422_1, PORT_RS422_2, PORT_RS422_3

Fields inherited from interface jcontrol.comm.ConsoleOutputStream

STD_LF

Fields inherited from interface jcontrol.comm.ConsoleInputStream

LF_CHARS

Constructor Summary

RS232()
Constructs a new RS232 I/O-stream using the default baudrate.

RS232(int baudrate)
Constructs a new RS232 I/O-stream using the specified baudrate.

Method Summary

void	print(String text) Writes a String to the serial line.
void	println() Writes a linefeed to the serial line.
void	println(String text) Writes a String and a linefeed to the serial line.
String	readLine() Reads a single String from the serial line.

Methods inherited from class jcontrol.comm.UART

available, close, errorCode, flush, getBaudrate, getParams, mark, markSupported, read, read, read, reset, setBaudrate, setCharacterGuardTime, setParams, skip, write, write, write

Methods inherited from class java.lang.Object

clone, equals, getClass, notifyAll, toString, wait

Methods inherited from interface jcontrol.io.BasicOutputStream

close, flush, write, write, write

Methods inherited from interface jcontrol.io.BasicInputStream

available, close, mark, markSupported, read, read, read, reset, skip

Constructor Detail

RS232

public RS232()
      throws IOException

Constructs a new RS232 I/O-stream using the default baudrate. On the same hardware there are no multiple instances allowed. The default baudrate is specified in the system property "rs232.baudrate".

Throws:

IOException - if port is in use

RS232

public RS232(int baudrate)
      throws IOException

Constructs a new RS232 I/O-stream using the specified baudrate.

Parameters:

baudrate - the bautrate to use, possible values are: 2400, 9600, 19200 (default), 31250, 63 (62500), 125 (125000), 250 (250000). This is controller dependent.

Throws:

IOException - if port is in use

See Also:

UART.setBaudrate(int)

Method Detail

readLine

public String readLine()
                throws IOException

Reads a single String from the serial line. The String is received character-by-character until an linefeed character defined in ConsoleInputStream is received. There is a buffer if size BUFFERSIZE allocated to store the received bytes, if the buffer is full a linefeed is forced.

Specified by:

readLine in interface ConsoleInputStream

Returns:

the String read

Throws:

IOException - if an error occurs

See Also:

String

print

public void print(String text)

Writes a String to the serial line. Unicode characters will not be decoded.

Specified by:

print in interface ConsoleOutputStream

Parameters:

text - String to write, its temporary stored in heap

See Also:

String

println

public void println(String text)

Writes a String and a linefeed to the serial line. Unicode characters will not be decoded.

Specified by:

println in interface ConsoleOutputStream

Parameters:

text - String to write, its temporary stored in heap

See Also:

String

println

public void println()

Writes a linefeed to the serial line.

Specified by:

println in interface ConsoleOutputStream