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Hey, this is a small but frustrating one. This is in legOS 1.7 but I beleive it will still be in 2.0 as it's caused by the 1 priority to a task requirement. If you write code like the following: while(1){ wait(for something); kill(t1); t1 = (...) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx.legos)
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| | Re: LegOS 0.2.0a multi-threading problem
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(...) If ON/OFF is desired while programs run, just drop the if. If ON/OFF isn't to work while programs run, it has to be this: if(nb_tasks<=3) { killall(PRIO_HIGHEST); return 0; // killall doesn't kill self } break; What does standard firmware do? (...) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx.legos)
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| | Re: Interests in non-GNU C compiler for RIS?
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Hello Luis, thanks for respomding (and thanks to others who have email me privately...) (...) We got into the business selling REXIS (REal eXecutive for Intelligent Systems) but stop after a couple years since the support cost is too high :-( I may (...) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx)
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| | Re: LegOS 0.2.0a multi-threading problem
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(...) Following up to myself, but here's the error (kernel/program/.c) lines 255-260: case KEY_ONOFF: // works only if no programs are running. if(nb_tasks<=3) { killall(PRIO_HIGHEST); } return 0; ^^^^ This should be 'break'. The way the code is (...) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx.legos)
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| | IR questinos and more
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Hi All. I'm trying to build an IR proximity sensor with LegOS, by using the on-board transmitter and light sensor. I'm having problems figuring out how to send data, however. I tried using lnp_logical_write(), but 'cu -l /dev/ttyS0' doesn't show any (...) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx.legos)
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| | Re: LegOS 0.2.0a multi-threading problem
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(...) That would be nice, actually. I have only one problem with stability - every once in a while, the "Run" key stops working, and all the other keys as well (don't remember exactly, but I think that's how it is). The program keeps running (...) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx.legos)
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| | Thanks to All!
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I really appreciate all of the great feedback. I've figured out which way I'm going so I'll probably have more specific programming questions in the near future. Luckily for me, I've found an excellent forum for intellectual exchange. Thanks again, (...) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx)
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| | Re: RCX 1.0 availablilty
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(...) Cost. Plain and simple. (25 years ago, 27-Oct-99, to lugnet.robotics.rcx)
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| | Re: RCX 1.0 availablilty
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(...) Sounds like I may need to make a run on RCX units if I want some for use with train layouts etc where I want them running on wall power rather than battery power. Any idea why TLG has removed the power jack? (25 years ago, 27-Oct-99, to lugnet.robotics.rcx)
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| | Re: What should be in the next version of RcxCC
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(...) I'd like to see a linux version. (25 years ago, 27-Oct-99, to lugnet.robotics.rcx.nqc)
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| | Re: Group to discuss Teaching Lego Robotics?? lugnet.robotics.teaching ???
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(...) This is a brilliant insight. I am not a "teacher" by trade (I also have the title "Engineer" tattooed across my cranium) but I have had many opportunities to teach small classes on various topics. It took me awhile to discover that trying to (...) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx.nqc, lugnet.admin.general)
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| | Re: Group to discuss Teaching Lego Robotics?? lugnet.robotics.teaching ???
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Todd, Dave, Ralph, OK!! This can work. I like the simple .edu (I was just grumbling, avoiding the Educator noun...) We're all learners and teachers. I'm out the door to work on Mindstorms with my Grandchildren! Be back this PM.... Todd, who can (...) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx.nqc, lugnet.admin.general)
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| | What should be in the next version of RcxCC
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Dear RcxCC users, I am running out of ideas of what to add to Rcx Command Center. So I like to ask you what you like to see next. Please be as specific as you can. In particular, I have heard a number of people making remarks about tools for (...) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx.nqc)
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| | Re: Double echo
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(...) I also think that standardisation is not a primary goal in our case ;) I still can't see a real necessity to have it as switchable feature, but having these ECHO_ON / ECHO_OFF available it's better then nothing. Would be nice to have them in a (...) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx.pbforth)
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| | Re: Group to discuss Teaching Lego Robotics?? lugnet.robotics.teaching ???
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(...) I was moved and motivated too -- and had a great time overall. (And I didn't even get to see half of everything!) (...) Hmm, so there was no panel "by educators, for educators" to discuss meta-topics? How about workshops? I missed the (...) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx.nqc, lugnet.admin.general)
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| | Re: Interests in non-GNU C compiler for RIS?
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Well, what I think (hope!) Richard means is... well... to start from scratch: The subsumption architecture is a way of thinking about programming robots. The idea is that you program lots of very small, simple modules that take simple inputs and (...) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx)
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| | RCX 1.0 availablilty
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This is a message I posted on RTL: Here is what I have observed so far: The RCX's in the plain 1.0 boxes all have power jacks. The RCX's in the 1.0 boxes with 1.5 upgrade stickers also have the jacks The RCX's in the 1.5 boxes do not have power (...) (25 years ago, 27-Oct-99, to lugnet.market.shopping, lugnet.robotics.rcx)
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| | RE: fast firmware downloader
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(...) Count me in. I'm ditching the Tcl interface - it's just too damn goofy! A standard firmware downloader would be great - especially if it ran on all platforms. As far As I know, Dave Baum is the only guy here who has got a downloader for the (...) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx.legos, lugnet.robotics.rcx, lugnet.robotics.rcx.pbforth)
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| | Re: fast firmware downloader
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(...) If there's interest in a stand-alone firmware downloader running on the Mac, please let me know. I can certainly add the approriate quad-speed stuff into NQC, and can also make a stand-alone version if Mac users are using pbFORTH or something (...) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx.legos, lugnet.robotics.rcx)
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| | Re: Group to discuss Teaching Lego Robotics?? lugnet.robotics.teaching ???
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(...) have in (...) not the (...) I agree - a discussion group for teaching would be a very good thing. One of the highlights of my NQC workshops was when one kid excitedly ran up to me anxious to show me how he changed the program in the "exercise" (...) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx.nqc)
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