Subject:
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Re: please help with threaded robot program
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Newsgroups:
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lugnet.robotics.rcx.java
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Date:
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Tue, 20 Feb 2001 18:32:43 GMT
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Viewed:
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2363 times
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Hi Susan,
Subsumption works great in leJOS. See this message for some example
code:
http://news.lugnet.com/robotics/rcx/java/?n=23
I think what you're missing is an arbitrator, which will probably run as
yet another thread.
Regards,
Jonathan
Susan Hoover wrote:
>
> Hi, this is my first message to the robotics groups. A little background: I've
> had RIS 1.0 for a couple of years, I have ~14 years of programming experience
> but only 1 year of Java (mostly server side).
>
> I downloaded leJOS beta 3 last week and wrote a simple program that goes
> forward, turns, and backs up when it hits a wall, but it was strictly a
> procedural do this - then do that kind of program. I am also reading Jonathan's
> book for tips.
>
> My question is this: will subsumption architecture work under leJOS? I tried
> implementing something similar what's in the Robotag chapter, except with fewer
> tasks. My program has two tasks: (1) go forward (following a line) and (2)
> react to falling off the line. I kicked off a new thread for each of these
> tasks. However, when I run it, it just keeps going forward as if the "hey, am I
> off the line?" thread is not even there (or is not getting processing time).
> Since I haven't done a whole lot of thread programming, I'm not sure whether the
> problem lies in (1) my understanding of subsumption architecture, (2) my
> implementation of threaded tasks, or (3) something in leJOS.
>
> The code is here if anyone wants to look at it: <URL: http://code.shoover.com/>
>
> Thanks in advance for any assistance,
> Susan
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 | | please help with threaded robot program
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| Hi, this is my first message to the robotics groups. A little background: I've had RIS 1.0 for a couple of years, I have ~14 years of programming experience but only 1 year of Java (mostly server side). I downloaded leJOS beta 3 last week and wrote (...) (24 years ago, 19-Feb-01, to lugnet.robotics.rcx.java)
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