 | | Re: LegOS newbie wants more info.
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(...) decided (...) the (...) demo (...) demo (...) Hi Kevin, look at the excellent legOS HOWTO by Luis Villa: (URL) (25 years ago, 29-Oct-99, to lugnet.robotics.rcx.legos)
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| | LegOS newbie wants more info.
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Hi everyone. I just got my Robotics Invention System 2 weeks ago and decided to not even try the Lego software. I also just got the O'Reilly book in the mail. I have been able to compile LegOS 0.2.0a and download firmare & demo programs. Can someone (...) (25 years ago, 29-Oct-99, to lugnet.robotics.rcx.legos)
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| | Re: What should be in the next version of RcxCC
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Mark, even though it's "Not Quite RcxCC", are you open to more 'features' in your tutorial "Programming Lego Robots using NQC" ?? (Looking for URL... mmmm..) found at: (URL) is more related to the 'Education' stuff we've been talking about (and will (...) (25 years ago, 29-Oct-99, to lugnet.robotics.rcx.nqc)
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| | RE: Double echo
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(...) I think I can add auto stack stuff before the weekend. (...) I did it, it works. (...) Yes, but hopefully if you set the mode, you wont forget it too quickly! :-) Here are the new words for the next release: RCX_ECHO - a variable, initially 0 (...) (25 years ago, 29-Oct-99, to lugnet.robotics.rcx.pbforth)
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| | Re: Firmware behaviour
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(...) And I always thought people would strike at the red button instinctively. Well, it's the green one. legOS will behave likewise, then - ON/OFF will work even if tasks are running. Markus. (25 years ago, 28-Oct-99, to lugnet.robotics.rcx)
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| | New newsgroups lugnet.robotics.edu & lugnet.edu
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lugnet.robotics.edu and lugnet.edu have just been created. For background information on how these came to be, please see the following messages and related threads: (URL) <-- especially this one (URL) <-- and this one (3 URLs) new discussion groups (...) (25 years ago, 28-Oct-99, to lugnet.admin.general, lugnet.robotics, lugnet.robotics.rcx.nqc, lugnet.robotics.events, lugnet.robotics.edu, lugnet.edu, lugnet.loc.us.ma.bos, lugnet.dacta, lugnet.general, lugnet.announce)
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| | RE: Double echo
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Hi Ralph, (...) Yea, no stack-hungry applications... Just to be sure, do you plan to add an automatic stack boundary alignment to HAT word? I think it could be a good solution. And memory, you are right, with Forth we have enough memory ;-> (...) (...) (25 years ago, 28-Oct-99, to lugnet.robotics.rcx.pbforth)
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| | RE: Double echo
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(...) There are no "tasks really, just a big loop that executes a bunch of opcodes...I'm paraphrasing here. The memory waste issue isn't that big a deal. The average distance to a boundary is 128 bytes, right. Say we allocate a 32 element data stack (...) (25 years ago, 28-Oct-99, to lugnet.robotics.rcx.pbforth)
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| | Re: Double echo
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Hi Ralph, (...) Means that we will have to waste memory a lot... Do you know how the standard LEGO firmware works? Does it allocate stack frame for each task or may be it's not an issue at all? (...) Yes, "4th" was always my favourite. Only question (...) (25 years ago, 28-Oct-99, to lugnet.robotics.rcx.pbforth)
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| | Re: fast firmware downloader
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(...) I'm willing to cover the DOS port since I'm working on a DOS->RCX comm project already. I already have my HP LX200 doing minimal comm with the RCX with hopes of having it ride alongside as a computational component. -Wes Matchett (25 years ago, 28-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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(...) I'll start by pulling the 4x code into the NQC source base. That should make it trivial to build a stand-alone command line based downloader for Win32 (95/nt/98), Linux, Solaris, and Mac 68k/ppc under MPW. We could also get Win3.1 and DOS (...) (25 years ago, 28-Oct-99, to lugnet.robotics.rcx.legos, lugnet.robotics.rcx, lugnet.robotics.rcx.pbforth)
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| | Re: What should be in the next version of RcxCC
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(...) I was considering writing an RCX bytecode simulator. If I get some free time I'll throw something together. Considering the last simulator I wrote was for an ARM 7111 with about a dozen on-chip peripherals, modeling the RCX bytecode (...) (25 years ago, 28-Oct-99, to lugnet.robotics.rcx.nqc)
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| |
| | RE: Double echo
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(...) Yes, it should. The issue is that you never really know if the stack will blast through the 256 byte boundary, unless HAT checks it. You generally allocate small stacks, so HAT could be modified to FORCE the data stack to start at the boundary (...) (25 years ago, 28-Oct-99, to lugnet.robotics.rcx.pbforth)
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| | Re: Firmware behaviour
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(...) The on/off button is always operational. It makes a great NO! STOP THAT! button when your robot is tearing itself apart accidentally. :) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx)
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| | Re: Double echo
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(...) Standalone loader would be nice. (...) Well, the most important, of course, is the stack bug. BTW, what about multitasker? How many cells would you recommend to allocate? Should be it checked by HAT word or not? (...) Sure, I would like to (...) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx.pbforth)
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| | 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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| | 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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| | Re: Interests in non-GNU C compiler for RIS?
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(...) Ahah! Now *that* is interesting to me. Obviously (as the legOS HOWTO maintainer), a gcc replacement doesn't really interest me, unless you have a reliable solaris->h8300 cross-compiler, in which case maybe we can talk :) However, I think I (as (...) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx)
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| | RE: Group to discuss Teaching Lego Robotics?? lugnet.robotics.teaching ???
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Terry wrote (...) I'd like to participate in this too. I'm an engineer that has two kids in grade 2 and another starting K in two years. So I want to get things moving in the right direction up here too! Todd, how about it? A group for educators (or (...) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx.nqc)
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| | Group to discuss Teaching Lego Robotics?? lugnet.robotics.teaching ???
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|
I will be teaching several 5th to 8th grade students how to build Lego-based Robots and how to program them in RcxCODE and NQC. We're located in Rural Vermont (!tm) in the NorthEast U.S. I was privileged to get to MindFest on Sunday at MIT, and (...) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx.nqc)
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| | RE: Double echo
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|
Sergey wrote: <Discussion of ECHO_ON ECHO_OFF snipped> (...) Personally, this is a BIG advantage. Users who do not have access to Tcl now have to deal with double respose characters. A simple ECHO_OFF at the beginning of their script and they now (...) (25 years ago, 27-Oct-99, to lugnet.robotics.rcx.pbforth)
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| | Re: Interests in non-GNU C compiler for RIS?
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|
(...) native H8 machine code, and that doesn't require a huge investment in time and disk space to install and configure. As I see it, there are already many development systems out there for free that are this simple to install and use, as long as (...) (25 years ago, 26-Oct-99, to lugnet.robotics.rcx)
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| |
| | Re: LegOS 0.2.0a multi-threading problem
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|
Hi, yes, currently, you'll have to make main() your first function. version 0.2.1 will support arbitrary starting offsets. could you report about the stability of repeated program runs? if this works fine, I'll change the ON/OFF behaviour to (...) (25 years ago, 26-Oct-99, to lugnet.robotics.rcx.legos)
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| |
| | Re: A few questions on NQC vs. VB
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|
(...) Hi, Don't miss the opportunity to learn Forth! It's unique environment, it's just another world. :) Here is a history of Forth: (URL) Sergey Udovenko (25 years ago, 26-Oct-99, to lugnet.robotics.rcx)
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| | Re: Double echo
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|
Hi Ralph, (...) Yes, it works. After fighting for a while with Cygwin32 + binutils (it's still present a bug in linker configuration), finally I got the development environment. Your makefile works fine so it was very easy to get pbFORTH compiled. (...) (25 years ago, 26-Oct-99, to lugnet.robotics.rcx.pbforth)
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| | Interests in non-GNU C compiler for RIS?
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|
I know most lego alternative SW seems to be Open Source, but please don't flame me for asking this question - ImageCraft is a company that provides low cost C compilers for 8/16 bit microcontrollers such as Atmel AVR, Moto HC11/12/16. While not Free (...) (25 years ago, 26-Oct-99, to lugnet.robotics.rcx)
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| | Re: A few questions on NQC vs. VB
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(...) Hi, I don't see this as a matter of choice. It really depends on what you want to do with your robots. NQC programs are executed directly on the RCX and needs no communication with the PC, whereas programs written in VB using SPIRIT.OCX are (...) (25 years ago, 26-Oct-99, to lugnet.robotics.rcx)
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| | Re: A few questions on NQC vs. VB
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|
Hi Zac, Dave Baum's NQC is excellent ... not quite the capabilities of pbForth, but *much* easier to learn. Mark Overmars' RCX-CC makes NQC even easier to use ... and best of all, both Dave and Mark have made their efforts available for use free of (...) (25 years ago, 26-Oct-99, to lugnet.robotics.rcx)
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| | Re: A few questions on NQC vs. VB
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|
(...) I'd recommend NQC; if you use visual basic, you'll need to go through a lot of communicating-with-the-brick and user-interface crap every time you want to make a program. With NQC, you concentrate on writing your code for the robot, and don't (...) (25 years ago, 26-Oct-99, to lugnet.robotics.rcx)
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| | RE: A few questions on NQC vs. VB
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(...) After seeing all the cool stuff at Mindfest this weekend, I'll say this: 1. Learn about basic bot building using the graphical tools from LEGO 2. When you need more control, go to NQC 3. When you run out of variables or timers, etc go to (...) (25 years ago, 26-Oct-99, to lugnet.robotics.rcx, lugnet.robotics.rcx.pbforth)
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| | Re: A few questions on NQC vs. VB
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Zac, I may not understand your objectives, but I'd say that using NQC with the Rcx Command Center RcxCC is the current best choice for work that is primarily concerned with programming the Rcx and Robots. You'll find it very easy to use, and there's (...) (25 years ago, 26-Oct-99, to lugnet.robotics.rcx)
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| | Re: LegOS 0.2.0a multi-threading problem
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(...) [snip] Heh. I've spent 2 days on this, so I know how you feel :). main() must be the first function in your source file, otherwise really weird stuff happens. -- Regards, Modemch (25 years ago, 25-Oct-99, to lugnet.robotics.rcx.legos)
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| | A few questions on NQC vs. VB
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|
Hi all. I've been lurking in the shadows reading posts for a couple of weeks and now have a question of my own. I'd like to move beyond the programming capabilities of the RIS software and am trying to decide which way to go. I have VERY little (...) (25 years ago, 26-Oct-99, to lugnet.robotics.rcx)
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| |
| | RE: Double echo
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|
(...) This is a good idea Sergey. Obvoiusly you have got a set of tools up to build the pbForth from the distribution. Does the makefile work OK for you? I might suggest that I add a word that turns the echos off or on? How does ECHO_OFF ( -- ) (...) (25 years ago, 26-Oct-99, to lugnet.robotics.rcx.pbforth)
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| |
| | Re: H8 tools problems on Linux
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|
(...) Hi! I got the precompiled tools from the LegOS page, tried with both the 'old' and the 'new' set... by the way, the Windows version works fine. Not 0.2.0, but that's not the tools' fault... thanks for all the help Vlad (25 years ago, 26-Oct-99, to lugnet.robotics.rcx.legos)
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| | Re: H8 tools problems on Linux
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|
Thanks for the plug, Jacob. I in fact have received a set of instructions for gcc 2.9.5, and began the work of integrating them into the HOWTO last night. However, I was interrupted and will not have time to finish the task tonight, so do expect gcc (...) (25 years ago, 25-Oct-99, to lugnet.robotics.rcx.legos)
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| | Re: H8 tools problems on Linux
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(...) I've compiled LegOS under RedHat 5.2 without problems. I recently upgraded to 6.0 and I still have no problems. Have you downloaded some odd version of gcc or binutils? I've experienced problems when compiling gcc 2.95, but they can (easily) (...) (25 years ago, 24-Oct-99, to lugnet.robotics.rcx.legos)
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| | Re: AI and even more exiciting stuff
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|
(...) Here is a simple example where 32 bits isn't enough precision. Task: Given a robot with at least one motor, rotational velocity sensors [1] on each motor and a light sensor, implement a program to compile statistics on motor speed and light (...) (25 years ago, 25-Oct-99, to lugnet.robotics, lugnet.robotics.rcx.pbforth)
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| | LegOS 0.2.0a multi-threading problem
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|
I have been attempting to us the thread API for a LegOS project. I have been following the examples I found on the LegOS How-To page with out much success. If I run some simple code inside the main function it works fine but if I try the same code (...) (25 years ago, 25-Oct-99, to lugnet.robotics.rcx.legos)
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| | Re: H8 tools problems on Linux
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(...) Vlad- First off, I'd suggest building your own tools, instead of downloading the pre-built tools (which, like anything pre-built, tends to work only on systems very similar to the original builder's.) There are pretty clear directions (I (...) (25 years ago, 24-Oct-99, to lugnet.robotics.rcx.legos)
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| | Re: H8 tools problems on Linux
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(...) I'll let someone else address the rest of your question, but: there is no "Linux 5.2". The latest stable version of Linux is 2.2.13, and the latest devel release is 2.3.22. Perhaps you mean Red Hat 5.2? In that case, I'd suggest upgrading -- (...) (25 years ago, 24-Oct-99, to lugnet.robotics.rcx.legos)
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| | H8 tools problems on Linux
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Hi all! The H8 tools on Linux won't work for me - it's Linux 5.2 and the C compiler complains about "null char when parsing input" for anything else than a comment... I tried with both the old and new tools form the legOS site.... any ideas? thanks (...) (25 years ago, 24-Oct-99, to lugnet.robotics.rcx.legos)
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| | Re: Spirit.ocx Download
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(...) Actually, NQC works without spirit.ocx (or any ocxes at all, for that matter). (25 years ago, 23-Oct-99, to lugnet.robotics.rcx)
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| | Spirit.ocx Download
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Hello, I am still waiting for my RIS 1.5 to arrive. I would like to try out some programs like NQC, but none of them work without spirit.ocx installed. Is there anywhere I can download Spirit.ocx (Legally) so that I can get started?. Regards, Garry (...) (25 years ago, 23-Oct-99, to lugnet.robotics.rcx)
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| | Double echo
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Hi Ralph, I just tried out to remove all EMITs from ACCEPT word, in order to eliminate back echo from RCX. It works good: less Frame Errors and Break Interrupts from comm port during the session. And you can use "normal" terminal program, like (...) (25 years ago, 22-Oct-99, to lugnet.robotics.rcx.pbforth)
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| | Serializing tasks
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Hi, I'm writing a Visual C++ program to control simultaneously 2 RCX (using Spirit.ocx). I'd need to know when a task is ended to start the download of a new task (I'd need a kind of TaskDone event). Is there a way to do this? Does anybody have (...) (25 years ago, 21-Oct-99, to lugnet.robotics.rcx)
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| | RE: Palm Pilot Control
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(...) Cool! This is what I origianlly designed pbFORTH fro, so you could upload source prom your PalmPilot via the Serial interface to the IR tower... There's even an ANSI forth for the PalmPilot for testing code!!! I for one would LOVE to see this (...) (25 years ago, 20-Oct-99, to lugnet.robotics, lugnet.robotics.rcx.pbforth)
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| | Re: Sharing variables and using expressions (was Re: NQC 2.0 and some math questions
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(...) I appreciate this -- that's what the "Not Quite" is all about. As long as you explain things well, I think this kind of compromise is the right way. (25 years ago, 20-Oct-99, to lugnet.robotics.rcx.nqc)
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| | Re: Sharing variables and using expressions (was Re: NQC 2.0 and some math questions
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The optimization was intentional (and quite a lot of work, actually). I know it breaks with multiple tasks, but I was more concerned with keeping the variable pool from being cluttered with temporaries. With only 32 vars to use, its quite easy to (...) (25 years ago, 20-Oct-99, to lugnet.robotics.rcx.nqc)
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| | FW: RCX Firmware and SP
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-----Original Message----- From: Sergey Udovenko [mailto:udovenko@bluewin.ch] Sent: Tuesday, October 19, 1999 5:56 PM To: Ralph Hempel Subject: Re: RCX Firmware and SP Hi Ralph, I'm just yet another hobbyist, so nothing is special about my plans. (...) (25 years ago, 19-Oct-99, to lugnet.robotics.rcx.pbforth)
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| | RE: additional pbforth questions
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Hmm, this is the kind of message I should use for FAQ fodder... (...) You can run it either way. The original intent was to use the dumbest tool possible to interact with the RCX. For DOS this is Procomm Plus or some such tool, for Windows its (...) (25 years ago, 19-Oct-99, to lugnet.robotics.rcx.pbforth)
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| | additional pbforth questions
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Does pbforth run under dos or windows on the PC? Does it use blocks or dos/windows file system on the PC? Does it use blocks in RAM on the RCX? If I program directly on the RCX can I upload the programs to the PC for further development? In using (...) (25 years ago, 19-Oct-99, to lugnet.robotics.rcx.pbforth)
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| | 0.2.0a patch
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Hello, apparently I introduced a glitch when adding last-minute support for non-patched standard egcs. This and a broken symlink in the archive prevented dllback from compiling on the host. A patched version of legOS is available on (URL) for the (...) (25 years ago, 19-Oct-99, to lugnet.robotics.rcx.legos)
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| | RCX-enhanced egcs
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Hello, I just posted the final RCX interrupt handling patch for egcs. There is no need for wrappers anymore. Interrupt handlers can be declared like this now: void handler() __attribute__((rcx_interrupt)); void handler() { // do stuff } For a leaf (...) (25 years ago, 19-Oct-99, to lugnet.robotics.rcx.legos)
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| | pbforth questions
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My 15 year old son is into legos big time. He has asked for the Lego robot package. I developed in Forth many years ago and I am just getting back into it with Forth Inc.'s SwiftForth for Windows. I have enjoyed messing about with it but what I am (...) (25 years ago, 19-Oct-99, to lugnet.robotics.rcx.pbforth)
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| | Sharing variables and using expressions (was Re: NQC 2.0 and some math questions
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I have discovered a somewhat non-intuitive feature of NQC (in my version, at least, which is pre-2.0) The statement: var = (20 * var) / 21; gets compiled into the following: MUL var, 20 ; var = var * 20 DIV var, 21 ; var = var / 21 rather than the (...) (25 years ago, 19-Oct-99, to lugnet.robotics.rcx.nqc)
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| | RE: RCX Firmware and SP
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(...) Unfortunately, yes. The current version of pbFORTH allocates a 256 byte stack, but it's JUST above a 256 byte boundary. When you run the test code, everything works, but if your stack depth is around 12 and you run SENSOR_READ, it allocates (...) (25 years ago, 19-Oct-99, to lugnet.robotics.rcx.pbforth)
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| | Re: RCX Firmware and SP
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(...) [...] Hi Ralph, Could you please explain more about consequences for pbFORTH user? As far as I can see, pbFORTH uses fixed 256-byte stack - does it mean that pbFORTH suffers from this problem too? Thanks Sergey Udovenko (25 years ago, 19-Oct-99, to lugnet.robotics.rcx.pbforth)
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| | Re: Announce: NQCIPC -- simple IPC for Not Quite C programs
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[forwarding a copy to the .rcx.nqc newsgroup... --Todd] (...) (25 years ago, 19-Oct-99, to lugnet.robotics.rcx.nqc)
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| | RE: AI and even more exiciting stuff
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Richard, I hope you don't mind me using your quote... <snipped discussion of junior programmer and temp sensor application) (...) Yesss! I am going to tie the moon mission into my panel presentation at Mindfest. Here's a source I used on the Apollo (...) (25 years ago, 18-Oct-99, to lugnet.robotics.rcx.pbforth, lugnet.robotics)
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| | Re: Annoying Journalist's Request
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To the list: this morning is a break for me, so I'm going to use it to type this out. Hope no one minds that it gets sent to the "annoying journalist" as well. Here at Duke, we are teaching a class with the mindstorms. Recently, we completed a class (...) (25 years ago, 18-Oct-99, to lugnet.robotics, lugnet.robotics.rcx.legos)
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| | RE: AI and even more exiciting stuff
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(...) OK, time to get out the soapbox. If you are trying to teach AI, and are using floating point math, then you probably have really fast computers with floating point processors that are sometimes quicker than equivalent fixed point calcs...... I (...) (25 years ago, 18-Oct-99, to lugnet.robotics, lugnet.robotics.rcx.pbforth)
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| | RE: AI and even more exiciting stuff
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(...) Well, we are trying to teach AI, not embedded systems :) Towards that end, we've sort of tried to simplify things as much as possible for the kids who are taking the class, since most of them will probably never do an embedded system again. (...) (25 years ago, 18-Oct-99, to lugnet.robotics, lugnet.robotics.rcx.pbforth)
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| | RE: AI and even more exiciting stuff
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(...) Yes, and no. It is an interpreter, that you can type (or upload) ASCII text to. It then compiles it into an efficient bytecode (really 16 bits) that lets you execute later. It allows for LOTS of variables and best of all, you don't need to be (...) (25 years ago, 18-Oct-99, to lugnet.robotics, lugnet.robotics.rcx.pbforth)
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| | RE: AI and even more exiciting stuff
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(...) ACK! Don't they teach fixed point any more? I encourage anyone to post an application where the dynamic range of signed 32 bit values is outside the range of numbers which would be useful to an RCX application! I'm not flaming, I'm just trying (...) (25 years ago, 18-Oct-99, to lugnet.robotics, lugnet.robotics.rcx.pbforth)
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| | Re: legOS 0.2.0 released
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Well, this is a bad week to say the least, but I hope to have rudimentary HOWTO stuff for 0.2.0 within two weeks. Thanks for everything, Markus! Luis (...) ###...### Profanity is the one language that all programmers understand. -Anonymous ###...### (25 years ago, 18-Oct-99, to lugnet.robotics.rcx.legos, lugnet.robotics)
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| | legOS 0.2.0 released
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Hello, legOS 0.2.0 is out. If you like to program your Mindstorms in C, or if you would like to try, it has become better than ever. Dynamic linking and program loading are fully supported now, as well as unreliable LNP datagram networking. Lots of (...) (25 years ago, 19-Oct-99, to lugnet.robotics.rcx.legos, lugnet.robotics)
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| | RCX Firmware and SP
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Hi All, After a very frustrating weekend of fiddling with pbFORTH, I caved and asked Kekoa to help with a problem I was having with read_sensor() and pbFORTH. The problem we (mostly he) unearthed has to do with the SP and RCX firmware routines, so I (...) (25 years ago, 17-Oct-99, to lugnet.robotics, lugnet.robotics.rcx.legos, lugnet.robotics.rcx.pbforth)
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| | Re:Solved?? rotation sensor problem
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On Sep.10,I posted the message regarding rotation-sensor problem. I realized that the first threshold value '0x6fc0' in CURRENT_STATE is too small. Some sensors give raw values around 0x7000. #define CURRENT_STATE (raw<0x6fc0?STATE_0:...STATE_3))) (...) (25 years ago, 17-Oct-99, to lugnet.robotics.rcx.legos)
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| | RE: Rotaion Sensor Sampling Speed?
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(...) I thought the problem was that it vibrated itself? (...) <snip forth code, which looks cool :)> (...) Take a look at the code that Markus sent out a while ago with the new firmdl he cooked up, particularly the code in keepalive.c and the code (...) (25 years ago, 14-Oct-99, to lugnet.robotics, lugnet.robotics.rcx.pbforth)
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| | RE: Rotaion Sensor Sampling Speed?
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(...) Well, I'd need to vibrate things while looking at raw values, which is possible, I guess. I could run the gantry, smaple as long as possible and then store the value in an array... Something like: CREATE BUFFER 5000 CELLS ALLOT ( makes room (...) (25 years ago, 14-Oct-99, to lugnet.robotics, lugnet.robotics.rcx.pbforth)
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| | RE: pbForth
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(...) I think there are some C to FORTH translators at www.forth.org, but the problem is you need to configure them to run on your CPU and then to output FORTH compatible with your target. Not an easy task. Why not just learn FORTH? I learned about (...) (25 years ago, 14-Oct-99, to lugnet.robotics.rcx.pbforth)
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