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Java programming on 8051

Discussion in 'Electronic Basics' started by Dean Krick, May 18, 2005.

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  1. Dean Krick

    Dean Krick Guest

    I would like to program an 8051 using Java. I know this is a really bad
    idea, especially since C is so much nicer and widely supported. I want
    to teach microprocessors to my AP computer science class after the AP
    test. FYI, the computer science test is in Java now, (not in C++
    anymore). Learning another language isn't probable due to time
    constraints and confusion. Any resources/ideas would be greatly
    appreciated. Are there other chip sets other than the 8051 which support
    Java programming? Thanx
    Dean Krick.
     
  2. Guest

    if the students understand Java, learning C shouldn't be that hard. CS
    students at my university are required to do it fast. The intro class
    is Java, then the structures class uses C within two weeks of starting.
    All that really changes are I/O and structures/classes. Both of which
    are different for uCs anyway.
     
  3. Chris

    Chris Guest

    I'm hearing you say you've got a group of computer science students who
    don't have a lot of electronics hardware background, and you just want
    them to have a quick overview of a hardware uC setup using a language
    they're very familiar with. (Hopefully, without paying an arm and a
    leg -- this is an academic environment.)

    One thing that comes to mind for a quick&dirty intro to
    microcontrollers for the Java over-enhanced is the Javelin Stamp, made
    by our friends at Parallax.

    http://www.parallax.com/javelin/index.asp

    It's a hybrid circuit on an alumina substrate with DIP pins. It's got
    the same footprint as the BASIC Stamp II, with an SX-type chip on
    board. I believe the "compiler" software actually tokenizes the text
    file containing the program, then sends the tokens to the Stamp to run.
    Their setup will give you the I/O you need, and it uses a subset of
    the Java language. The biggest downside is that you can't mix
    higher-level language and assembler, like you can with most
    microcontrollers or single board computers that are supported by a
    higher-level language.

    Parallax is very good at providing data and literature that's suitable
    for newbies. They've also published a project book for the Javelin
    Stamp which might be of help. Look on the website for more
    information. (Disclaimer: I haven't used the Javelin Stamp myself.)

    Once you've purchased a starter kit, you should be able to etch a
    programming board and cobble up what's needed for individual students
    or pairs to have a "programming pod" from what you've got laying
    around.

    Although it might be useful in giving students who know Java an intro
    into microcontrollers, I don't see this becoming a very popular option
    for uC high-level language compilers. I'd just tell your students to
    take a flying leap into the C. But obviously, I don't teach. ;-)


    Good luck
    Chris
     
  4. Rich Grise

    Rich Grise Guest

    If you really merely want to teach microprocessor principles, then
    write an emulator as an applet, and let them run it on their laptops, and
    let them see the program counter, instruction register, ALU, and so
    on, do their thing.

    If you want to teach them hands-on real microprocessors, then avoid
    Java like the plague, bite the bullet, and get some BASIC Stamp trainers
    or something.

    Cheers!
    Rich
     
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