Subject:
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Re: light sensor problem?
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Mon, 24 Jul 2000 01:04:01 GMT
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Viewed:
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2472 times
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> I'm not sure which comments you are referring to- do you have a URL for
> the lugnet post?
http://www.lugnet.com/robotics/rcx/legos/?n=203
> > I doubt we need this very fast reading of sensors. This makes implementing
> > more sophisticated events like change over time and such harder.
>
> You mean change over time of the sensors? Shouldn't that kind of stuff be
> done in "user space" anyway?
Yes, when we have user space timers...
> As far as assembly goes, I have to say that the current implementation is
> pretty tame.
This is correct, but there are many good reasons for keeping assembly
low bandwidth, like pitfalls in assembler embedded in c source
(see our memcpy problem). If the compiler is bad and we need speed, the
speed argument wins, though.
> Can we also add this to the 0.2.5 todo list? Again, this is a pretty big
> change (possibly).
Of course. I totally agree to have these ideas collected first, and get
0.2.4 out. This keeps a lot of pressure out of the development of new
things, as it would not be that hard if they work not fully from scratch.
Eddie C. Dost
ecd@skynet.be
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Message has 1 Reply:
 | | Re: light sensor problem?
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| (...) proof that this occurs (even though his logic does seem pretty dead on.) (...) Well, we do... time_t current_time = sys_time; while (sys_time < current_time + the amount of time I want to wait) { do nothing; } It's not pretty, but it is (...) (24 years ago, 24-Jul-00, to lugnet.robotics.rcx.legos)
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Message is in Reply To:
| | Re: light sensor problem?
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| (...) :) Bad is, of course, all relative... (...) Yes, though IMHO fast = good. It allows us to do things with legOS that might not be doable with other firmwares. (...) I'm not sure which comments you are referring to- do you have a URL for the (...) (24 years ago, 24-Jul-00, to lugnet.robotics.rcx.legos)
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