Java RXTX Parallel Port set pins
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I need to write a simple application in Java (running on Win7 64 bit System), which sets specific pins of the parallel port to high (5V) or to low (0V).
I got a little program running, which searches for the LPT1 and sends back pins statuses.
import gnu.io.*;// If using RXTX
import gnu.io.ParallelPort;
import java.io.*;
import java.util.*;
import java.io.IOException;
import java.io.OutputStream;
public class FirstSteps
{
public static void main (String args)
{
OutputStream outputStream;
ParallelPort parallelPort;
CommPortIdentifier port;
String PARALLEL_PORT = "LPT1";
try
{
port = CommPortIdentifier.getPortIdentifier(PARALLEL_PORT);
System.out.println("PortType = " + port.getPortType());
System.out.println("PortName = " + port.getName());
parallelPort = (ParallelPort) port.open("0x0378",100);
outputStream = parallelPort.getOutputStream();
System.out.println("PaperOut = " + parallelPort.isPaperOut());
System.out.println("PaperOut = " + parallelPort.isPrinterBusy());
System.out.println("PaperOut = " + parallelPort.isPrinterSelected());
}catch(NoSuchPortException | PortInUseException |IOException ex)
{
}
}
}
In the doc of RXTX, which has any comments to the functions, only listed them, I found the function ".write(...)", which can send a byte array through the port. What do I have to enter there as an argument, in case I only wnat to set, for example PIN 2, which is a DataOut pin of the parallel port?
Thanks and best regards!
java parallel-processing set port rxtx
asked Nov 23 '18 at 16:16
MoguntMogunt
11
add a comment |
I need to write a simple application in Java (running on Win7 64 bit System), which sets specific pins of the parallel port to high (5V) or to low (0V).
I got a little program running, which searches for the LPT1 and sends back pins statuses.
import gnu.io.*;// If using RXTX
import gnu.io.ParallelPort;
import java.io.*;
import java.util.*;
import java.io.IOException;
import java.io.OutputStream;
public class FirstSteps
{
public static void main (String args)
{
OutputStream outputStream;
ParallelPort parallelPort;
CommPortIdentifier port;
String PARALLEL_PORT = "LPT1";
try
{
port = CommPortIdentifier.getPortIdentifier(PARALLEL_PORT);
System.out.println("PortType = " + port.getPortType());
System.out.println("PortName = " + port.getName());
parallelPort = (ParallelPort) port.open("0x0378",100);
outputStream = parallelPort.getOutputStream();
System.out.println("PaperOut = " + parallelPort.isPaperOut());
System.out.println("PaperOut = " + parallelPort.isPrinterBusy());
System.out.println("PaperOut = " + parallelPort.isPrinterSelected());
}catch(NoSuchPortException | PortInUseException |IOException ex)
{
}
}
}
In the doc of RXTX, which has any comments to the functions, only listed them, I found the function ".write(...)", which can send a byte array through the port. What do I have to enter there as an argument, in case I only wnat to set, for example PIN 2, which is a DataOut pin of the parallel port?
Thanks and best regards!
java parallel-processing set port rxtx
asked Nov 23 '18 at 16:16
MoguntMogunt
11
add a comment |
I need to write a simple application in Java (running on Win7 64 bit System), which sets specific pins of the parallel port to high (5V) or to low (0V).
I got a little program running, which searches for the LPT1 and sends back pins statuses.
import gnu.io.*;// If using RXTX
import gnu.io.ParallelPort;
import java.io.*;
import java.util.*;
import java.io.IOException;
import java.io.OutputStream;
public class FirstSteps
{
public static void main (String args)
{
OutputStream outputStream;
ParallelPort parallelPort;
CommPortIdentifier port;
String PARALLEL_PORT = "LPT1";
try
{
port = CommPortIdentifier.getPortIdentifier(PARALLEL_PORT);
System.out.println("PortType = " + port.getPortType());
System.out.println("PortName = " + port.getName());
parallelPort = (ParallelPort) port.open("0x0378",100);
outputStream = parallelPort.getOutputStream();
System.out.println("PaperOut = " + parallelPort.isPaperOut());
System.out.println("PaperOut = " + parallelPort.isPrinterBusy());
System.out.println("PaperOut = " + parallelPort.isPrinterSelected());
}catch(NoSuchPortException | PortInUseException |IOException ex)
{
}
}
}
In the doc of RXTX, which has any comments to the functions, only listed them, I found the function ".write(...)", which can send a byte array through the port. What do I have to enter there as an argument, in case I only wnat to set, for example PIN 2, which is a DataOut pin of the parallel port?
Thanks and best regards!
java parallel-processing set port rxtx
asked Nov 23 '18 at 16:16
MoguntMogunt
11
I need to write a simple application in Java (running on Win7 64 bit System), which sets specific pins of the parallel port to high (5V) or to low (0V).
I got a little program running, which searches for the LPT1 and sends back pins statuses.
import gnu.io.*;// If using RXTX
import gnu.io.ParallelPort;
import java.io.*;
import java.util.*;
import java.io.IOException;
import java.io.OutputStream;
public class FirstSteps
{
public static void main (String args)
{
OutputStream outputStream;
ParallelPort parallelPort;
CommPortIdentifier port;
String PARALLEL_PORT = "LPT1";
try
{
port = CommPortIdentifier.getPortIdentifier(PARALLEL_PORT);
System.out.println("PortType = " + port.getPortType());
System.out.println("PortName = " + port.getName());
parallelPort = (ParallelPort) port.open("0x0378",100);
outputStream = parallelPort.getOutputStream();
System.out.println("PaperOut = " + parallelPort.isPaperOut());
System.out.println("PaperOut = " + parallelPort.isPrinterBusy());
System.out.println("PaperOut = " + parallelPort.isPrinterSelected());
}catch(NoSuchPortException | PortInUseException |IOException ex)
{
}
}
}
In the doc of RXTX, which has any comments to the functions, only listed them, I found the function ".write(...)", which can send a byte array through the port. What do I have to enter there as an argument, in case I only wnat to set, for example PIN 2, which is a DataOut pin of the parallel port?
Thanks and best regards!
java parallel-processing set port rxtx
java parallel-processing set port rxtx
asked Nov 23 '18 at 16:16
MoguntMogunt
11
asked Nov 23 '18 at 16:16
MoguntMogunt
11
asked Nov 23 '18 at 16:16
MoguntMogunt
11
asked Nov 23 '18 at 16:16
MoguntMogunt
11
asked Nov 23 '18 at 16:16
MoguntMogunt
11
11
add a comment |
add a comment |
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