 | | Firmware behaviour
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Hi all, does the ON/OFF Button work while a program is running with the standard firmware? Or do you need to press RUN to stop it first? Markus. (25 years ago, 27-Oct-99, to lugnet.robotics.rcx)
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| | Re: legOS limitation
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Hi Colin, (...) The one task per priority level requirement is gone at least since March. There is a priority chain mechanism now, with round-robin scheduling within a priority level. (...) Yes, a task won't die while higher-priority tasks are (...) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx.legos)
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| | Re: Group to discuss Teaching Lego Robotics?? lugnet.robotics.teaching ???
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(...) OK, getting closer. I went more closely through a bunch of recent messages here, scanned a few more papers, and thought more about what Seymour Papert said in his talk, then culled what seemed like the core issues and wrote down a couple (...) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx.nqc, lugnet.admin.general)
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| | Re: IR questinos and more
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Hi Sergey, (...) if you intend only to transmit, you may just disable receiving altogether. (...) for an axle. yes, angle=rotation. (...) using the rotation sensor. otherwise, slippage may occur. night, markus. (25 years ago, 27-Oct-99, to lugnet.robotics.rcx.legos)
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| | Re: Group to discuss Teaching Lego Robotics?? lugnet.robotics.teaching ???
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(...) Aha -- Rich, thanks for stepping forward. I wasn't there until the very end of the meeting, so I missed your question, but I heard about it second- or third-hand. What was the answer to your question, and were you satisfied by it? What subset (...) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx.nqc, lugnet.robotics.events, lugnet.admin.general)
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| | Re: Group to discuss Teaching Lego Robotics?? lugnet.robotics.teaching ???
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(...) I think that might have been me. I was sitting in the front row right across from Mitchel. (...) Rich (25 years ago, 27-Oct-99, to lugnet.robotics.rcx.nqc, lugnet.admin.general)
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| | RE: Double echo
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(...) Yup. Dave tells me he is working on integrating the speedier loader into NQC or even making standalone loaders by themselves... Sergey, which features do you REALLY want/need for the next release. I'm doing the following... 1. ECHO_ON/ECHO_OFF (...) (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'll see to it. --Todd (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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(...) I think major areas of education will [have to] end up going through the same push->pull revolution that traditional media have begun to go through in recent years. Pushing television shows, commercials, movies -- and especially news -- in (...) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx.nqc, lugnet.admin.general)
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| | Re: LegOS 0.2.0a multi-threading problem
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(...) I'd say this is the way to leave it, since it seems to be how you meant it in the first place. It's just very annoying to take out the batteries if ON/OFF is pressed by mistake while something is running. (...) Don't know, I've never used (...) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx.legos)
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| | legOS limitation
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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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