 | | Re: Blocking IR
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Great, I'll try this out tonight. Many Thanks, Phil. (...) (25 years ago, 14-Jun-99, to lugnet.robotics.rcx.legos)
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| | Re: Are there any limitations/restrictions on releasing legOS compiled programs (.srec files)?
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I am not a lawyer, but I have been interested in license issues for some time. Because LegOS is basically a library and not really an OS, and because it is compiled in with the rest of your code, technically speaking you must release code to anyone (...) (25 years ago, 14-Jun-99, to lugnet.robotics.rcx.legos)
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| | Are there any limitations/restrictions on releasing legOS compiled programs (.srec files)?
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Are there any limitations/restrictions on releasing legOS compiled programs (.srec files)? I'm aware that legOS itself is MPL (Mozilla Public License), but are the programs that are compiled with it, and contain a portion of it, subject to open (...) (25 years ago, 13-Jun-99, to lugnet.robotics.rcx.legos)
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| | Re: Blocking IR
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(...) I forgot to mention. At the top of dir_write, you probably want to add: if (dir_tx_state == TX_ACTIVE) return -1; Or something to that effect, so you don't transmit a second message while a first is still transmitting, and so you have a way of (...) (25 years ago, 10-Jun-99, to lugnet.robotics.rcx.legos)
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| | Re: Blocking IR
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(...) Do you mean dir_write? This is a problem with LegOS only. If you want non-blocking writes, comment out (in version 0.1.7 at least): while(dir_tx_state==TX_ACTIVE) ; // FIXME: scheduler integration if(dir_tx_state==TX_OK) return len; // (...) (25 years ago, 10-Jun-99, to lugnet.robotics.rcx.legos)
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| | Blocking IR
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Before I start trying to do this, does anyone know why the LegOS function write_ir is a blocking function? I'm trying to write an IR detection system but am unable to do so in LegOS because every time I write a byte to the IR port the RCX locks up. (...) (25 years ago, 10-Jun-99, to lugnet.robotics.rcx.legos)
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| | Re: arbitrary motor allocation
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(...) Why does the code need a case statement? What interface are you looking for? void motor_dir(motor, dir) and motor_speed(motor, speed)? I missed the previous discussion. This is easy to implement, with no major changes to the code, just an (...) (25 years ago, 9-Jun-99, to lugnet.robotics.rcx.legos)
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| | arbitrary motor allocation
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If I recall correctly, there was some discussion of a rewrite of the OS's motor code so that arbitrary motors could be assigned by the code without the need for a large case statement in user code. Has that happened? Is it happening? Can I help? (...) (25 years ago, 8-Jun-99, to lugnet.robotics.rcx.legos)
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| | RE: Lego Network Protocol questions
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(...) I'll back you up on this. My pbFORTH sends a simple character stream and it seems to work fine. No complements are necessary. I sure would like to be able to keep the RCX tower alive, though. I wonder if it's the character going through that (...) (25 years ago, 7-Jun-99, to lugnet.robotics.rcx.legos, lugnet.robotics)
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| | tm-and-ir (again)
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Hi all, I've been using Legos without any major problems but never got the tm-and-ir demo to work properly. I can receive characters on the RCX fine but when the 'view' button is pressed (within 3 seconds) the results are normally junk on the screen (...) (25 years ago, 7-Jun-99, to lugnet.robotics.rcx.legos)
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| | Re: Lego Network Protocol questions
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(...) So of course I was curious about getting rid of the complements. Apparently, they are not necessary, or so my testing so far seems to indicate. Under the several lighting conditions I tried, and for distances of up to 27' (the farthest I could (...) (25 years ago, 6-Jun-99, to lugnet.robotics.rcx.legos, lugnet.robotics)
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| | Re: Lego Network Protocol questions
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(...) I forgot to mention that one possible deficiency is the complements. They can be eliminated, for the most part, with careful counting of zeros. I haven't done any testing regarding this, so I don't know how many zeros in a row will break (...) (25 years ago, 6-Jun-99, to lugnet.robotics.rcx.legos, lugnet.robotics)
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| | Re: Lego Network Protocol questions
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Regarding the IR protocol, I have elsewhere suggested the following simple low-level format: 1 start, 1 stop, 2400 baud, odd parity 55 f0 f0 L ~L D1 ~D1 .. Dn ~Dn C ~C L is number of data bytes, valid range 1..255, less depending on buffer sizes Dx (...) (25 years ago, 6-Jun-99, to lugnet.robotics.rcx.legos, lugnet.robotics)
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| | RE: Lego Network Protocol questions
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Sorry, I have been out of the loop for quite some time now on the protocol. Next time will someone smack me when I voluntarily take a compiler theory course on top of 3 other computer sciences courses. I had no life for over a month. I am currently (...) (25 years ago, 5-Jun-99, to lugnet.robotics.rcx.legos, lugnet.robotics)
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| | Re: I'm having problems getting legos to compile
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(...) you can specify where the .h files are using the -I switch... maybe you just need to check the Makefile (or Makefile.common) and change some paths there... or: check the configuration of compiler, sorry, I can't help with that... erik (25 years ago, 5-Jun-99, to lugnet.robotics.rcx.legos)
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| | I'm having problems getting legos to compile
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on cygwin.. I'm sure it's something I forgot to setup. Can anyone help?? it's complaining that it can't find the .h files.. (25 years ago, 5-Jun-99, to lugnet.robotics.rcx.legos)
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| | compilation errors w/ legOS 0.1.7+patches
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Hello all! I just downloaded and installed legOS 0.1.7 and applied all of the available patches. I created a quick program, one which one turns on a motor, sleeps, the returns, and attempted to compile it. This is the error that I get: (...) (25 years ago, 3-Jun-99, to lugnet.robotics.rcx.legos)
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| | Re: Download at www.multimania.com
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I have all the LegOS files (including reasonably recent egcs and binutils .tar files) here: (URL) As usual, I recommend the LegOS howto for new users- (URL) it helps... (...) ###...### God was my co-pilot, but we crashed in the mountains and I had (...) (25 years ago, 1-Jun-99, to lugnet.robotics.rcx.legos)
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| | Re: Download at www.multimania.com
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I got exactly the same problem - I cannot get the legos nor other files from the legos site. I always get random sized files (shorter than actual size of files I try to dowanload). somebody help please. I just got the mindstorm and would love to (...) (25 years ago, 31-May-99, to lugnet.robotics.rcx.legos)
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| | emulegOS: a legOS (and RCX) emulator
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Marco Beri and I just released the first version of emulegOS, a software emulator of legOS and the RCX itself. We like a lot legOS and the way it opens a broad range of possibilities to the RCX, but felt the need of a more comfortable environment (...) (25 years ago, 29-May-99, to lugnet.announce, lugnet.robotics, lugnet.robotics.rcx.legos)
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