Subject:
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Interruptions in BrickOS
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Mon, 4 Nov 2002 07:15:15 GMT
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Viewed:
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2464 times
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Hi, I'am a researcher of the Free University Of Brussels. We're currently
working on embedded systems. We would like to generate code for embedded
systems from a specification language which could be used for formal
verification. We chose Legos for our tests.
For us, real-time properties of the platform is really important :
so, I have 3 questions :
- it seems that the only possible interruption is the one from the 1ms timer.
Is it right?
- In the scheduler code, there is a remark saying it can't be interrupted.
Why? Is it because you assume it will always has finished his job in less
than 1ms, thus before the next interruption? Or is it because the
interruptions are suspended by some mean I did not see?
- Last question : when the scheduler is called, if its task structure is
blocked by another task, it'll let this task finish. So, if that task is
active for a whole new timeslice, he'll take control again only afther this
whole timeslice. So it's possible the scheduler is not really used for two
(or more) timeslices in place of one. Is it right?
Thank you.
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Message has 1 Reply:
 | | Re: Interruptions in BrickOS
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| Good questions! See responses below... "Martin De Wulf" <madewulf@ulb.ac.be> wrote in message news:H51ItF.Ax1@lugnet.com... <snip> (...) You may want to check out the latest (now called BrickOS) at (URL) For us, real-time properties of the platform (...) (22 years ago, 4-Nov-02, to lugnet.robotics.rcx.legos)
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