We have the latest USB Interface Card K8055N / VM110N DLL version (4.0.0.0) and have downloaded the latest “Complete SDK Pack (Rev 4.0)” for Windows 7, 64Bit. Unfortunately we cannot find any programming examples how to interface program this board using Java.
For a project we need to use the K8055N USB interface card to be controlled under Windows 7, 64 Bit using Java programming language.
Can you please provide us with a small programming example on how to use and control the VM110N or K8055N using Java programming language?
And currently there is no native solution for java are available.
But it’s possible to call methods from a DLL with java. see here =>link
As an Alternative you could use a library written in java that can be found on GitHub (search K8055 in github).
In the mean time we will be looking into making a official java library and examples for the K8055N/VM110N.
(should be expected in coming weeks)
Looking forward to the official native Vellemann solution for Win 7 / 64 Bit for Java supporting the K8055N/VM110N, comming soon.
We really need your solution (Java lib and examples) for a project latest until end of Jan 2016.
Thank you for providing the K8055N_Java.zip.
I have unzipped it, read the PDF and opened the Java example program in Netbeans 8.2.
Running it in Netbeans, results in:
java.lang.UnsatisfiedLinkError: C:\Windows\System32\K8055NW_x64.dll: Can’t find dependent libraries
It seems to properly find and load K8055NW_x64.dll but then something goes wrong. As if another (depending) DLL is missing.
Clean and build the Java example, in Netbeans, works fine; no errors or warnings. But running fails.
(JRE=1.8.0_141-b15, Windows10)
Any help would be appriciated.
I have downloaded that jdk1.8.0_191 and made it the new default platform for Netbeans, but the problem remains the same.
Also I tried java -jar “K8055N.jar” on the command line, outside Netbeans, with the two DLL-s in the same directory as K8055N.jar. This results in exactly the same error message (as above), suggesting it has properly found your K8055NW_x64.dll.
OK.
It seems that maybe a dependent library is missing from your Windows.
One such is MSVCR110.dll.
The msvcr110.dll is a part of Microsoft Visual C++ Redistributable.
As a test I renamed MSVCR110.dll in the System32 folder and got following result when running the application in Netbeans:
java.lang.UnsatisfiedLinkError: C:\Windows\System32\K8055NW_x64.dll: Can't find dependent libraries
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1857)
at java.lang.Runtime.loadLibrary0(Runtime.java:870)
at java.lang.System.loadLibrary(System.java:1122)
at k8055n.K8055N.<clinit>(K8055N.java:61)
Exception in thread "main" C:\Users\VEL255\AppData\Local\NetBeans\Cache\8.2\executor-snippets\run.xml:53: Java returned: 1
BUILD FAILED (total time: 4 seconds)
Thank you, that solved the problem!
Indeed this library file MSVCR110.DLL was missing from directory C:\Windows\System32, this was probably not a wild guess
Fortunately I was able to copy this library from a similar PC, where it was not missing. The Java example program is now running properly and controlling the K8055N board.
I can further focus on using the K8055N from Java programs
Thanks VEL255
I have been using the Java wrapper K8055NW_x64.dll for quite some time now and it works well.
Next step is to deploy my Java program to a 32-bit PC.
Here I get the error: java.lang.UnsatisfiedLinkError: C:\Windows\System32\K8055NW_x64.dll: Can’t load AMD 64-bit .dll on a IA 32-bit platform
Is there also a 32-bit version of the wrapper available? I think I have not seen it.
The original source code for the wrapper DLL is included into this package.
The wrapper is written using Microsoft Visual Studio Express Visual C++ 2012.
If you have this or other compatible compiler, you may recompile it using Win32 platform instead of the original x64 platform.
Then you can use the 32 bit DLL with the 32 bit version of K8055D.DLL available here.
Alternatively you can download here the ready compiled 32 bit wrapper DLL and the latest 32 bit version of the K8055D.DLL.
This wrapper is renamed to K8055NW_Win32.dll
Thanks for the quick response.
The compiled 32-bit DLL from the download is working properly.
My Java program is now also working on a 32-bit Windows PC
Thanks
