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  1. #1
    aswinkavali is offline Member
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    Default Java for jtag interface

    Hi,

    Is there any library available for sending Jtag instructions in Java?

    Could you please post the link?

    If possible, a sample program which will read idcode?

    Thanks,
    Aswin

  2. #2
    SurfMan's Avatar
    SurfMan is offline Godlike
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    Default Re: Java for jtag interface

    JTag:
    - Joint Test Action Group
    - Jtag to modify the XBox
    - Testing and in-system programming printed circuit boards and systems
    - A Java ID3 tagger
    - A software package which enables working with JTAG-aware (IEEE 1149.1) hardware devices (parts) and boards through JTAG adapter.
    - Joshua Tree Art Gallery is a Co-operative Fine Art Gallery featuring the best of Painting, Sculpture and Photography in the Hi-desert.

    I guess you need to be a little more specific.
    "It's not fixed until you stop calling the problem weird and you understand what was wrong." - gimbal2 2013

  3. #3
    aswinkavali is offline Member
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    Default Re: Java for jtag interface

    Sorry that i was not specific!

    Jtag --> Joint Test action group.

    Every Fpga (Field programable gate array) will be having Jtag access where user can access the device for programming the devices.

    I just need a java sample code for reading IDCODE of the tap controller via Jtag standard jtag instruction. By that i should be able to code for other instructions (USERCODE, EXTEST, INTEST etc).

    JTAG - A Technical Overview - TAP Signals and Instructions

    Thanks,
    Aswin

  4. #4
    gimbal2 is offline Just a guy
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    Default Re: Java for jtag interface

    While we're on the topic of making things specific, what's wrong with the results that you get when you type "jtag java example" into Google?

    I assume you did at least basic research yourself before you came here, so what did you find already and why wasn't it sufficient?
    "Syntactic sugar causes cancer of the semicolon." -- Alan Perlis

  5. #5
    JosAH's Avatar
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    Default Re: Java for jtag interface

    I like that JTAG interface; even the smallest processors such as those tiny Atmel thingies implement it; tip: never drop one of those tiny thingies on the floor; you'll never find it again. The dog will, but it prefers to swallow it.
    I've never seen a Java implementation of that interface though and I question the use of it ...

    kind regards,

    Jos
    Build a wall around Donald Trump; I'll pay for it.

  6. #6
    gimbal2 is offline Just a guy
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    Default Re: Java for jtag interface

    Quote Originally Posted by JosAH View Post
    I've never seen a Java implementation of that interface though and I question the use of it ...
    The top hit of the google query I mentioned:

    jjtag - A Java interface for IEEE-1149.1 JTAG controllers

    I know the OP picked another meaning of JTAG from the list of possibilities, but I'm still pretty positive it is actually this one given the need to talk to "devices".
    "Syntactic sugar causes cancer of the semicolon." -- Alan Perlis

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