Accessing DLL in Java doesn't work - really it DOESN'T !!!
Hi,
I've got big troubles accessing a DLL in Java - almost for one week !!!
I want to call some methods from the LDCNLIB.DLL (www.logosolinc.com -> Software)
First, I tried to access the file via JNI ->
Exception in thread "main" java.lang.UnsatisfiedLinkError: LdcnInit
at Test.LdcnInit(Native Method)
at Test.main(Test.java:11)
Of Course, the DLL is loaded, everything seems fine.
I tried to create header files, I tried SWIG, JNIWrapper, JACE, JAWIN, ... Nothing!!!
I just want to call this method: "int count = LdcnInit("COM1", 19200);"
Can anybody help me? Please (don't be angry with me), just tell me what to do, no links to tutorials or documentations - I ALREADY READ THEM ALL!!!
Thanks
Torsten
Hi,
I had no problem at all to access this lib with JNative.
Here is a sample code.
package org.xvolks.test.Ldcnlib;
import org.xvolks.jnative.JNative;
import org.xvolks.jnative.Type;
import org.xvolks.jnative.exceptions.NativeException;
public class Test {
public static void main(String[] args) throws NativeException, InterruptedException, IllegalAccessException {
//System.setProperty("jnative.loadNative", "E:\workspace\JNativeCpp\Win32_Release\libJNativeCpp.dll")
for(String s : JNative.getDLLFileExports("C:\\Documents and Settings\\Administrateur\\Bureau\\ldcnlib\\Ldcnlib.dll")) {
System.err.println(s);
}
System.load("C:\\Documents and Settings\\Administrateur\\Bureau\\ldcnlib\\Ldcnlib.dll");
JNative LdcnInit = new JNative("Ldcnlib.dll", "LdcnInit");
LdcnInit.setRetVal(Type.INT);
LdcnInit.setParameter(0, "COM1");
LdcnInit.setParameter(1, 19200);
LdcnInit.invoke();
System.err.println("LdcnInit returned "+LdcnInit.getRetValAsInt());
}
}
The output was as expected :
AddArcSeg
AddLineSeg
AddPathPoints
ClearSegList
FixSioError
GetComPort
GetSioError
IOSynchOutput
InitPath
IoBitDirIn
IoBitDirOut
IoClrOutBit
IoGetADCVal
IoGetBitDir
IoGetOutputs
IoGetPWMVal
IoGetStat
IoGetTimerMode
IoGetTimerSVal
IoGetTimerVal
IoInBitSVal
IoInBitVal
IoOutBitVal
IoSetOutBit
IoSetOutputs
IoSetPWMVal
IoSetSynchOutput
IoSetTimerMode
IsBusy
LdcnChangeBaud
LdcnDefineStatus
LdcnFullInit
LdcnGetGroupAddr
LdcnGetModType
LdcnGetModVer
LdcnGetStat
LdcnGetStatItems
LdcnGroupLeader
LdcnHardReset
LdcnInit
LdcnNoOp
LdcnReadStatus
LdcnResetDevice
LdcnRestoreNetwork
LdcnSendCmd
LdcnSetGroupAddr
LdcnShutdown
LdcnSynchInput
MaxStepPeriod
MinStepPeriod
PathGetVelocity
PathTime
SegmentsInBuffer
ServoAddPathPoints
ServoClearBits
ServoEEPROMCtrl
ServoGetAD
ServoGetAD10
ServoGetAux
ServoGetCmdAcc
ServoGetCmdAdc
ServoGetCmdAdc10
ServoGetCmdPos
ServoGetCmdPwm
ServoGetCmdVel
ServoGetGain
ServoGetHome
ServoGetHomeCtrl
ServoGetInport1
ServoGetInport2
ServoGetInport3
ServoGetIoCtrl
ServoGetMoveCtrl
ServoGetNPoints
ServoGetOutport1
ServoGetOutport2
ServoGetOutport3
ServoGetOutport4
ServoGetPError
ServoGetPos
ServoGetSDMode
ServoGetServoInit
ServoGetStat
ServoGetStopCtrl
ServoGetVel
ServoInitPath
ServoLoadTraj
ServoLoadTraj10
ServoResetPos
ServoResetRelHome
ServoSetFastPath
ServoSetGain
ServoSetHoming
ServoSetOutputs
ServoStartMotion
ServoStartPathMode
ServoStopMotor
SetFeedrate
SetOrigin
SetPathParams
SetTangentTolerance
SimpleMsgBox
SioChangeBaud
SioClose
SioClrInbuf
SioGetChars
SioOpen
SioPutChars
SioTest
StepGetAD
StepGetCmdAcc
StepGetCmdPos
StepGetCmdST
StepGetCmdSpeed
StepGetCtrlMode
StepGetEmAcc
StepGetHoldCurrent
StepGetHome
StepGetHomeCtrl
StepGetIObyte
StepGetInbyte
StepGetMinSpeed
StepGetMvMode
StepGetOutputs
StepGetPos
StepGetRunCurrent
StepGetStat
StepGetStepPeriod
StepGetStepTime
StepGetStopCtrl
StepGetThermLimit
StepLoadTraj
StepLoadUnprofiledTraj
StepResetPos
StepSetHoming
StepSetOutputs
StepSetParam
StepStopMotor
StepTime2StepsPerSec
StepsPerSec2StepTime
StepsPerSec2mSecPerStep
CPPdebugHook
mSecPerStep2StepsPerSec
LdcnInit returned 0
--Marc (http://jnative.sf.net)
Hi guys,
thanks a lot. The JNative code works fine, but it's not that convenient to invoke all these "setter-methods" to do just one dll-call. How can I call functions with BOOL, byte, ... values (e.g. BOOL LdcnSendCmd(byte addr, byte cmd, char *datastr, byte n);) ?
@bschauwejava : Could you please give me an concrete example to do this. I was not able to get it working!
