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Altera_Forum's avatar
Altera_Forum
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14 years ago

Error : Could not initialize class com.altera.systemconsole.internal.plugin.jtag.aji

Hi everyone,

I have a custom board with an EP3C10 wich I access with the JTAG port. I have an USB Blaster to download both the vhdl and the code for the nios2. I'm working with windows 7 32bits with Quartus2 10.1 sp1.05.

Yesterday, everything worked fine, but today morning, I cannot download the nios2 software.

I manage to download the vhdl and the output of the FPGA run fine so I understand that my FPGA and the JTAG port are both OK. and so do the USB Blaster.

In Eclipse when I select "run configuration", on the "target connection" tap, I have this error message :

system console: could not initialize class com.altera.systemconsole.internal.plugin.jtag.aji.ajicable

and when I click on "refresh connection", nothing happen! Well, the button is locked for 2 second and then it come back to its previous state...

Has anyone any clue to solve that ?

Thank you

4 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    Can I ask a couple of questions about your setup?

    What's on your path when you run Eclipse?

    Do you have multiple copies of Quartus/ACDS installed?

    Thanks.
  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    Hi, I forgot to reply to this thread. The system is working again.

    But, because there is a but, I can't explain why it wasn't working and why it works now. I have tried several times several way to have my download to success:

    - I have closed eclipse and started it again => no use.

    - switched off the computer and reboot => same here.

    - re-install the USB driver => again it wasn't that.

    - others stuff I can't remember.

    And every time, the same error message appeared.

    But once, and I don't know why, it worked, and since, I don't have any problem anymore. I should have done something to change the behavior but I don't know what it is.

    To answer your question : yes, I have quartus 9.1sp2 and quartus 10.1sp1.05 installed.
  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    I'm glad you've got it working again.

    The error message occurs because that Java code is unable to load it's native library, JtagJNI.dll.

    What I suspect happened here is that your path had somehow made windows load the wrong versions of the native library - one which is not compatible with the Java - or that that DLL found the wrong version of a dll it depends on. (The windows DLL loading rules are byzantine, and Java doesn't really provide any good ways to override them)

    But I'd like proof before jumping to conclusions.
  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    hi!

    i have had a long discussion with wombat for building a connection from matlab to my nios2. after many hours of reading and searching, i suppose that the best possibility should be, to use systemconsole via matlab (=> Matlabapi) - wombat told me.

    after a long time i finally can create a java object in matlab for establishing the connection.

    the problem:

    when i use "L1 = com.altera.systemconsole.matlabapi.SystemConsoleLink" the object is created successfully but i get the message:

    ----------

    05.08.2011 09:42:55 com.altera.systemconsole.internal.core.SystemConsole$PluginDiscovery run

    INFO: Finished initialization

    05.08.2011 09:42:55 com.altera.systemconsole.internal.core.SystemConsole logSevere

    SCHWERWIEGEND: Could not initialize class com.altera.systemconsole.internal.plugin.jtag.aji.AJICable

    java.lang.RuntimeException: java.lang.NoClassDefFoundError: Could not initialize class com.altera.systemconsole.internal.plugin.jtag.aji.AJICable

    at com.altera.systemconsole.internal.core.SystemExecutor$3.run(SystemExecutor.java:438)

    at com.altera.systemconsole.internal.core.SystemExecutor$TaskComparator$ComparatorPolicy.run(SystemExecutor.java:207)

    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)

    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

    at java.lang.Thread.run(Unknown Source)

    Caused by: java.lang.NoClassDefFoundError: Could not initialize class com.altera.systemconsole.internal.plugin.jtag.aji.AJICable

    at com.altera.systemconsole.internal.plugin.jtag.aji.AJIConnectionProvider.queryCables(AJIConnectionProvider.java:48)

    at com.altera.systemconsole.internal.plugin.jtag.JtagConnectionProvider.doRescan(JtagConnectionProvider.java:174)

    ...

    -----------------------------

    so i get the same error when i try to build a connection via matlabapi and the problem is - ???

    when i start system-console.exe (from the E:\altera\11.0\quartus\sopc_builder\bin) system-console can establish the connection and i can send tcl-commands.

    ok today i was able to produce the error with an other file.

    i have a copy from system-console.exe from an old installtion (i set up a new system win7-64 ->winXP-32) and its possible to start it but i got the same error like in matlab. problem with jtagdni.dll.

    mhh - i have no idea how to fix it ???

    do you have an idea now how you fixed your problem?