Help needed urgent please ( parallel port access in linux)

hi all, i am trying to read and write data to /from the parallel port , i am running IBM j9 vm on linux.under /dev there are lp0..lp3 parport0..parport3, and port devices , i dont know which one to use , i have tried all , they all return with an ioexception saying "cannot find the file" except for port device which does not generate any error but it does not return what i have written on it ,
any help would be much appreciated.
i am using fileoutputstream and printwriter calsses .
i dont want to use javax.comm api cause i think its incompatible with ibms visual age micro edition ( the one i am using ) so i would prefer something that works with my IDE .
thanks
yahya
[email protected]

However, there is an on-going OpenSource version called "RXTX" (http://jarvi.ezlink.com/rxtx/) that works quite well. Be sure to read all the documentation that comes with it, as you'll need to set some permissions on the ports you want to use.

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hello guys.. Please Solve my Problem..
I have to access motor through pc using Parallel Port. I want to know how to program in java to access Parallel Port. So How can i code to access the any Port of Parallel Port. Please Guide me in this..
I have tried using parport (code given below )---------------->but it gives error hs_err_pid2172.log (error explanation given at last ). Please tell me what is the problem or if u have any other alternative to access Parallel Port
//===============================================================================
//code :
package parport;
public class ParallelPort
private int portBase;
public ParallelPort(int portBase)
this.portBase = portBase;
public int read()
return ParallelPort.readOneByte(this.portBase+1);
public void write(int oneByte)
ParallelPort.writeOneByte(this.portBase, oneByte);
public static native int readOneByte(int address);
public static native void writeOneByte(int address, int oneByte);
static
System.loadLibrary("parport");
import parport.ParallelPort;
class SimpleIO {
public static void main ( String []args )
ParallelPort lpt1 = new ParallelPort(0x378);
lpt1.write(240);
===================================================================================
ERROR file : hs_err_pid2172.log
# An unexpected error has been detected by Java Runtime Environment:
# EXCEPTION_PRIV_INSTRUCTION (0xc0000096) at pc=0x1000107b, pid=2172, tid=2108
# Java VM: Java HotSpot(TM) Client VM (10.0-b23 mixed mode, sharing windows-x86)
# Problematic frame:
# C [parport.dll+0x107b]
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
--------------- T H R E A D ---------------
Current thread (0x02b5c000): JavaThread "AWT-EventQueue-0" [_thread_in_native, id=2108, stack(0x02fd0000,0x03020000)]
siginfo: ExceptionCode=0xc0000096
Registers:
EAX=0x000000ff, EBX=0x26a28380, ECX=0x000000ff, EDX=0x00000378
ESP=0x0301f2f4, EBP=0x0301f308, ESI=0x26a28380, EDI=0x02b5c000
EIP=0x1000107b, EFLAGS=0x00010246
Top of Stack: (sp=0x0301f2f4)
0x0301f2f4: 10001041 10000378 000000ff 000000ff
0x0301f304: 02b50378 0301f34c 00989c91 02b5c0f4
0x0301f314: 0301f354 00000378 000000ff 02b5c6f4
0x0301f324: 02b5c6f4 02b5c6e4 0301f32c 26a28380
0x0301f334: 0301f360 26a28618 00000000 26a28380
0x0301f344: 00000000 0301f35c 0301f384 00982cb1
0x0301f354: 26a285b8 00988099 000000ff 00000378
0x0301f364: 0301f364 26a28255 0301f390 26a28618
Instructions: (pc=0x1000107b)
0x1000106b: cc cc cc cc cc 33 c0 66 8b 54 24 04 8a 44 24 08
0x1000107b: ee c3 66 8b 54 24 04 66 8b 44 24 08 66 ef c3 66
Stack: [0x02fd0000,0x03020000], sp=0x0301f2f4, free space=316k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C [parport.dll+0x107b]
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::StubRoutines (1)
Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::StubRoutines (1)
--------------- P R O C E S S ---------------
Java Threads: ( => current thread )
0x00295800 JavaThread "DestroyJavaVM" [_thread_blocked, id=2164, stack(0x00870000,0x008c0000)]
=>0x02b5c000 JavaThread "AWT-EventQueue-0" [_thread_in_native, id=2108, stack(0x02fd0000,0x03020000)]
0x02b5ac00 JavaThread "AWT-Windows" daemon [_thread_in_native, id=3640, stack(0x02f30000,0x02f80000)]
0x02b59c00 JavaThread "AWT-Shutdown" [_thread_blocked, id=2204, stack(0x02ee0000,0x02f30000)]
0x02b59000 JavaThread "Java2D Disposer" daemon [_thread_blocked, id=3740, stack(0x02e90000,0x02ee0000)]
0x02addc00 JavaThread "Low Memory Detector" daemon [_thread_blocked, id=372, stack(0x02d90000,0x02de0000)]
0x02adb400 JavaThread "CompilerThread0" daemon [_thread_blocked, id=608, stack(0x02d40000,0x02d90000)]
0x02ad6c00 JavaThread "Attach Listener" daemon [_thread_blocked, id=3920, stack(0x02cf0000,0x02d40000)]
0x02ad6000 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=808, stack(0x02ca0000,0x02cf0000)]
0x02ad1800 JavaThread "Finalizer" daemon [_thread_blocked, id=1736, stack(0x02c50000,0x02ca0000)]
0x02acd000 JavaThread "Reference Handler" daemon [_thread_blocked, id=2728, stack(0x02c00000,0x02c50000)]
Other Threads:
0x02acbc00 VMThread [stack: 0x02bb0000,0x02c00000] [id=624]
0x02ae7800 WatcherThread [stack: 0x02de0000,0x02e30000] [id=580]
VM state:not at safepoint (normal execution)
VM Mutex/Monitor currently owned by a thread: None
Heap
def new generation total 960K, used 262K [0x229e0000, 0x22ae0000, 0x22ec0000)
eden space 896K, 22% used [0x229e0000, 0x22a11830, 0x22ac0000)
from space 64K, 100% used [0x22ad0000, 0x22ae0000, 0x22ae0000)
to space 64K, 0% used [0x22ac0000, 0x22ac0000, 0x22ad0000)
tenured generation total 4096K, used 344K [0x22ec0000, 0x232c0000, 0x269e0000)
the space 4096K, 8% used [0x22ec0000, 0x22f161a8, 0x22f16200, 0x232c0000)
compacting perm gen total 12288K, used 289K [0x269e0000, 0x275e0000, 0x2a9e0000)
the space 12288K, 2% used [0x269e0000, 0x26a286b0, 0x26a28800, 0x275e0000)
ro space 8192K, 66% used [0x2a9e0000, 0x2af30f10, 0x2af31000, 0x2b1e0000)
rw space 12288K, 52% used [0x2b1e0000, 0x2b8306d0, 0x2b830800, 0x2bde0000)
Dynamic libraries:
0x00400000 - 0x00423000 G:\Program Files\Java\jdk1.6.0_07\jre\bin\java.exe
0x7c900000 - 0x7c9b0000 G:\WINDOWS\system32\ntdll.dll
0x7c800000 - 0x7c8f5000 G:\WINDOWS\system32\kernel32.dll
0x77dd0000 - 0x77e6b000 G:\WINDOWS\system32\ADVAPI32.dll
0x77e70000 - 0x77f02000 G:\WINDOWS\system32\RPCRT4.dll
0x77fe0000 - 0x77ff1000 G:\WINDOWS\system32\Secur32.dll
0x7c340000 - 0x7c396000 G:\Program Files\Java\jdk1.6.0_07\jre\bin\msvcr71.dll
0x6d870000 - 0x6dac0000 G:\Program Files\Java\jdk1.6.0_07\jre\bin\client\jvm.dll
0x7e410000 - 0x7e4a0000 G:\WINDOWS\system32\USER32.dll
0x77f10000 - 0x77f57000 G:\WINDOWS\system32\GDI32.dll
0x76b40000 - 0x76b6d000 G:\WINDOWS\system32\WINMM.dll
0x76390000 - 0x763ad000 G:\WINDOWS\system32\IMM32.DLL
0x6d710000 - 0x6d723000 G:\PROGRA~1\KASPER~1\KASPER~1\mzvkbd.dll
0x76bf0000 - 0x76bfb000 G:\WINDOWS\system32\PSAPI.DLL
0x6d730000 - 0x6d743000 G:\PROGRA~1\KASPER~1\KASPER~1\mzvkbd3.dll
0x6d020000 - 0x6d035000 G:\PROGRA~1\KASPER~1\KASPER~1\adialhk.dll
0x77f60000 - 0x77fd6000 G:\WINDOWS\system32\SHLWAPI.dll
0x77c10000 - 0x77c68000 G:\WINDOWS\system32\msvcrt.dll
0x6d4c0000 - 0x6d4c6000 G:\PROGRA~1\KASPER~1\KASPER~1\kloehk.dll
0x6d320000 - 0x6d328000 G:\Program Files\Java\jdk1.6.0_07\jre\bin\hpi.dll
0x6d820000 - 0x6d82c000 G:\Program Files\Java\jdk1.6.0_07\jre\bin\verify.dll
0x6d3c0000 - 0x6d3df000 G:\Program Files\Java\jdk1.6.0_07\jre\bin\java.dll
0x6d860000 - 0x6d86f000 G:\Program Files\Java\jdk1.6.0_07\jre\bin\zip.dll
0x6d0b0000 - 0x6d1de000 G:\Program Files\Java\jdk1.6.0_07\jre\bin\awt.dll
0x73000000 - 0x73026000 G:\WINDOWS\system32\WINSPOOL.DRV
0x774e0000 - 0x7761d000 G:\WINDOWS\system32\ole32.dll
0x5ad70000 - 0x5ada8000 G:\WINDOWS\system32\uxtheme.dll
0x73760000 - 0x737a9000 G:\WINDOWS\system32\ddraw.dll
0x73bc0000 - 0x73bc6000 G:\WINDOWS\system32\DCIMAN32.dll
0x74720000 - 0x7476b000 G:\WINDOWS\system32\MSCTF.dll
0x755c0000 - 0x755ee000 G:\WINDOWS\system32\msctfime.ime
0x6d2c0000 - 0x6d313000 G:\Program Files\Java\jdk1.6.0_07\jre\bin\fontmanager.dll
0x7c9c0000 - 0x7d1d6000 G:\WINDOWS\system32\shell32.dll
0x773d0000 - 0x774d3000 G:\WINDOWS\WinSxS\x86_Microsoft.Windows.Common-Controls_6595b64144ccf1df_6.0.2600.2982_x-ww_ac3f9c03\comctl32.dll
0x5d090000 - 0x5d12a000 G:\WINDOWS\system32\comctl32.dll
0x6d620000 - 0x6d633000 G:\Program Files\Java\jdk1.6.0_07\jre\bin\net.dll
0x71ab0000 - 0x71ac7000 G:\WINDOWS\system32\WS2_32.dll
0x71aa0000 - 0x71aa8000 G:\WINDOWS\system32\WS2HELP.dll
0x6d640000 - 0x6d649000 G:\Program Files\Java\jdk1.6.0_07\jre\bin\nio.dll
0x77120000 - 0x771ab000 G:\WINDOWS\system32\OLEAUT32.DLL
0x10000000 - 0x1000b000 G:\Program Files\Java\jdk1.6.0_07\bin\parport.dll
VM Arguments:
java_command: parport.NewJFrame
Launcher Type: SUN_STANDARD
Environment Variables:
CLASSPATH=G:\Program Files\Java\jdk1.6.0_07\bin;G:\java\classes
PATH=G:\Program Files\PC Connectivity Solution\;G:\Program Files\Java\jdk1.5.0_07\bin;G:\WINDOWS\system32;G:\WINDOWS;G:\WINDOWS\System32\Wbem;G:\Program Files\K-Lite Codec Pack\QuickTime\QTSystem\;G:\Program Files\Java\jdk1.6.0_07\bin;G:\Program Files\Microsoft SQL Server\90\Tools\binn\;G:\Program Files\MATLAB\R2007b\bin;G:\Program Files\MATLAB\R2007b\bin\win32
USERNAME=shankar
OS=Windows_NT
PROCESSOR_IDENTIFIER=x86 Family 15 Model 4 Stepping 7, GenuineIntel
--------------- S Y S T E M ---------------
OS: Windows XP Build 2600 Service Pack 2
CPU:total 2 (2 cores per cpu, 1 threads per core) family 15 model 4 stepping 7, cmov, cx8, fxsr, mmx, sse, sse2, sse3
Memory: 4k page, physical 457196k(30972k free), swap 1074312k(241668k free)
vm_info: Java HotSpot(TM) Client VM (10.0-b23) for windows-x86 JRE (1.6.0_07-b06), built on Jun 10 2008 01:14:11 by "java_re" with MS VC++ 7.1
time: Thu Oct 09 13:47:18 2008
elapsed time: 7 seconds

I have same problem...
No one more have solve this?
I alread have tried use RXTX library..
but I have:
java.io.IOException: The device is not connected.
I think that pass-motor don't have correct response for pararell protocol (I need use it with direct write, no ack signal, no read, etc)

Help needed urgently -Had a power (electricity) failure at re-installation

I need your help in fixing this BIG problem. I had an app reset which required me to re-install my 8900 Os. In the process of installation. Having gotten to the level where it says Do not disconnect your device..
Loading JVM and the system application window
waiting for device initialization
A colleague of mine trying to resolve some issues with his printer mistakenly Pull my power cable off
I tried starting all over again but the system would not recognize the phone and could not even come up with the com port number>
the phone blinks intermittently too.
How do I resolve this issue.
Thank you

Hi and Welcome to the Forums!
Two possibilities for you:
http://crackberry.com/blackberry-101-lecture-12-how-reload-operating-system-nuked-blackberry
http://forums.crackberry.com/f3/how-wipe-jl_cmder-53502/
Good luck and let us know!
Occam's Razor nearly always applies when troubleshooting technology issues!
If anyone has been helpful to you, please show your appreciation by clicking the button inside of their post. Please click here and read, along with the threads to which it links, for helpful information to guide you as you proceed. I always recommend that you treat your BlackBerry like any other computing device, including using a regular backup schedule...click here for an article with instructions.
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Parallel port access problem

Hi all!
I'm trying to communicate with parallel port using the commapi version 2. Unfortunately, the api doesn't accept any other mode than SPP mode that is read-only. When I try to change the parallel port mode, I got an UnsupportedCommOperationException. I'm working with windows xp.
Does anybody have an idea?
Thanks!
Thiago

I have same problem...
No one more have solve this?
I alread have tried use RXTX library..
but I have:
java.io.IOException: The device is not connected.
I think that pass-motor don't have correct response for pararell protocol (I need use it with direct write, no ack signal, no read, etc)

Help needed urgently on a problem..plzzz

hi..this is a linear congruential generator. I have to implement it and i need the execution time for the program.
for your understanding i'm providing an example below.
Xn=(( a* xn-1 )+b) mod m
If X0=7 ; a = 7 ; b =7 ; m=10
Then
X0 = 7
X1 =((7 * 7) + 7))mod 10 = 6
X2 = ((6*7)+7))mod 10 = 9
X3 = ((9*7)+7) mod 10 = 0
X4 = ((0*7)+7) mod 10 = 7
Now since the cycle is being repeated i.e 7 appears again�so the period is 4 coz there are 4 diff nos. i.e 7,6,9,0�..
help required urgently....your help will be appreciated...thankyou..

Hi,
I wrote the code so that it catches any cycle (not only the "big" one).
Otherwise it will enter infinite loop...
The time complexity is O(N*logN): it can do at most N iterations (here N is your 'm'), and in each iteration there can be O(log N) comparisons (since I maintain TreeSet).
Interesting issue: is it possible to supply such (x0, a, b, m) tuple such that all possible values from 0 to m-1 will be output? I think no :)
Here is the program:
package recurr;
import java.util.TreeSet;
import java.util.Comparator;
public class Recurrences {
     private static long x0, a, b, m;
     private static TreeSet theSet;
     public static void main(String[] args)
          long l0, l1, l2, l3;
          try {
               x0 = Long.parseLong(args[0]);
               a = Long.parseLong(args[1]);
               b = Long.parseLong(args[2]);
               m = Long.parseLong(args[3]);
          } catch(NumberFormatException nfe) {
               nfe.printStackTrace();
          System.out.println("X[0]: " + x0 + "\n");
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          boolean cut = false;
          int i;
          // initialize the set
          theSet = new TreeSet(new LongComparator());
          // we can get at most m distinct values (from 0 to m-1) through recurrences
          for(i=1; i <= m; ++i) {
               // iterate until we find duplicate
               theSet.add(new Long(curr));
               curr = recurrence(curr);
               if(theSet.contains(new Long(curr))) {
                    cut = true;
                    break;
               System.out.println("X[" + i + "]: " + curr + "\n");
          if(cut) {
               System.out.println("Cycle found: the next will come " + curr + "\n");
          } else {
               System.out.println("No cycle found!");
          System.out.println("----------------------------------");
          System.out.println("Totally " + (i-1) + " iterations");
     private static long recurrence(long previous)
          return (a*previous + b)%m;
     static class LongComparator implements Comparator
          public int compare(Object o1, Object o2)
               if(((Long)o1).longValue() < ((Long)o2).longValue()) {
                    return -1;
               } else if(((Long)o1).longValue() > ((Long)o2).longValue()) {
                    return 1;
               } else return 0;
}

Help needed Urgently- Rebate based on collected amount

Dear all,
I come across scenario while discussiion with client that they require rebate with collection. Details of the requirement are given below:
1. SAP rebates run on billed values & set the accrual in rebate agreement on the rate what we have specified in the rebate agreement. Requirement is that, If i have billed on 1000$ & my accrual value is 100$ with the rate of 10%. If i collected 800$ instead of 1000$, then i need to pay the accrual on the basis of 800$ not on the basis of 1000$. It means i have to adjust accrual amount on the basis of 800$. Conclusion is that i have to pay not 100$ accrual instead less then 100$ on the basis of 800$ which i collected.
2. In month 1 have billed on 5000$, my accrual amount is 500$ with rate of 10%. In the 2nd month i have to bill 1000$ and i have given an discount of 500$, it means my billed value is 500$ and my accrual amount is 50$@10%. In month 3 again i billed 500$ and my accrual amount is 50$@10%.
Requirement is that, when i am going to pay the accrual to client, i should pay correct accrual for which he is entitled for. Means i should pay 100$ accrual not 600$ because i have already given an discount of 500$. Discount which i have given already of 500$ should need to be offest with the first month accrual of 500$. So remaning accrual is 100$.
Great if somebody can help me out for the solutioning of the above requirements.

Thanks Ivano,
Somebody has started the conversation.
Let me put my questions again.
This requirement is nothing to do with Payment procedure in the agreement type.
1. In any month if i billed 1000$, so my account receivable would be 1000$. My rebate for that month is 100$ at the rate of 10%. During customer receipt if i collected against my invoice 900$ instead of 1000$, my accrual needs to be corrected 90$ instead of 100$.
I know this can not be fullfilled by standard SAP, by any thoughts on this welcomed.
2. I know Rebate can be settled partially or full settlement by payment method( by cheque, bank transfer, or by credit memo) we have configure in rebate agreement type. But here requirement is totally different.
Here, i need to pay the Rebate as a Discount instead of by cheque or by credit memo. While doing the partial or full settlement system will take into account collected accrual up to that day & apply as a discount to the final bill.
Scenario is like that sometimes customer asked to give us the discount on bill for whatever they accrued so far.
This is again cannot solved by standard SAP, but any thought by any body welcome. We have already thought that we need to enhance the solution.
Solution needed urgently.

Help needed urgent please ( parallel port access in linux)

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