 | | 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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| | Re: light values?
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Ah... that makes sense- I didn't realize that power was completely cut. Should have (I'm not *that* incompetent in reading electronics diagrams). Oh well. Thanks for the feedback, John... Luis (...) ###...### God was my co-pilot, but we crashed in (...) (25 years ago, 28-May-99, to lugnet.robotics.rcx.legos)
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| | Re: light values?
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(...) The light sensor is an active sensor, which means that it requires power to operate. When you call ds_passive, you are no longer supplying power to the sensor between readings. Some people have reported being able to use the light sensor for (...) (25 years ago, 28-May-99, to lugnet.robotics.rcx.legos)
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| | Re: light values?
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Some months ago, I posted this question, but got no response. I've finally played with it some more this morning and have some observations: 1) After setting ds_active, my light sensor returns values of 0-100, as I should. 2) After calling (...) (25 years ago, 28-May-99, to lugnet.robotics.rcx.legos)
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| | Re: Lego Network Protocol questions
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In lugnet.robotics.rcx.legos, Kekoa Proudfoot writes: [ ... ] (...) To this end, i've started work on a Discrete Event Simulator. The idea is to use this to see the effects of some of the things you mention above. Note that this is not an (...) (25 years ago, 21-May-99, to lugnet.robotics.rcx.legos, lugnet.robotics)
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| | Download at www.multimania.com
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Hi, I'm not sure exactly why this is, but for some reason I can't get a binary download to work from .. (URL) .. Whenever I try and download any of the files from this server ( using both a PPP line at home, and the connection at Uni.) I get (...) (25 years ago, 16-May-99, to lugnet.robotics.rcx.legos)
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| | Re: firmdl question
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(...) I believe the units are tens of firmware bytes downloaded already. Oh, to point out the obvious, this is a ROM thing, not a firmdl thing. -Kekoa (25 years ago, 13-May-99, to lugnet.robotics.rcx.legos)
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| | Re: Rom sensor read routine
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(...) The current LegOS model really hammers the sensors, almost to the point of oversampling them. It only takes a short while (less than 0.1 ms, I think) to sample all four sensors; I think LegOS samples the next sensor immediately after finishing (...) (25 years ago, 13-May-99, to lugnet.robotics.rcx.legos)
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| | firmdl question
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When using firmdl to download a program to the RCX, what exactly do the numbers on the LCD indicate? Are there units I should be attaching to them, or are they just there to indicate progress without specific units? Just curious- Luis ###...### God (...) (25 years ago, 13-May-99, to lugnet.robotics.rcx.legos)
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| | Re: Rom sensor read routine
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Hi Kekoa, (...) I am fixing this right now. (...) The current legOS sensor read cycle is this (i=illuminate, c=A/D conversion) S1: iii iii iii ccc S2: ccc iii iii iii S3: iii ccc iii iii S4: iii iii ccc iii If you find your sensor 2 readings to be (...) (25 years ago, 2-May-99, to lugnet.robotics.rcx.legos)
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| | Re: Lego Network Protocol questions
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(...) I believe transmission and reception are independent, i.e. the emitter circuit is decoupled from the receiver circuit. The hardware on the H8 is full duplex. Once you finish sending a byte, I think you get two interrupts: one saying a byte has (...) (25 years ago, 5-May-99, to lugnet.robotics.rcx.legos, lugnet.robotics)
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| | Floating point emulation
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I succeeded in using (emulated) floats in a legOS program. Here are some instructions in case some of you want/need to try 32 bit FP emulation. First of all I must point out that I have no merit at all in having got this result, a part from having (...) (25 years ago, 5-May-99, to lugnet.robotics.rcx.legos)
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| | Re: Lego Network Protocol questions
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(...) Just to state my interests: I'm mainly interested in the protocol, eg what level of service it would provide etc. In particular, I'm interested in layering a higher level gauranteed delivery protocol atop whatever simple one is provided. (...) (...) (25 years ago, 5-May-99, to lugnet.robotics.rcx.legos, lugnet.robotics)
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| | Re: I'm being stupid. But how?
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Here's the fair play policy: (URL) right. The Lego Group is exceedingly protective of their trademarks and intellectual property. If they haven't pursued action against legOS, it's very likely a deliberate policy rather than an oversight. Jonathan (...) (25 years ago, 5-May-99, to lugnet.robotics.rcx.legos)
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| | Re: Lego Network Protocol questions
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In lugnet.robotics.rcx.legos, Ralph Hempel writes: [ ... ] (...) This is actually the book from which the thoughts I posted about arose. It is, indeed, a great book ;-) (25 years ago, 5-May-99, to lugnet.robotics.rcx.legos, lugnet.robotics)
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| | Re: I'm being stupid. But how?
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(...) Considering the past history of TLG, I'd say the fact that they haven't said anything about the name LegOS says a lot. TLG is paranoid about their trademark. Use Lego like a noun (as in, "I liked Legos a lot when I was a kid," or "I play with (...) (25 years ago, 4-May-99, to lugnet.robotics.rcx.legos)
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| | Re: I'm being stupid. But how?
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(...) Lego's always been a bit of a hobbyist's thing[1] so probably even TLG thinks there isn't much point in siccing lawyers on us, even if they disapproved. Big companies[2] lawyering hobbyists is really bad PR :) [1] not in any way derogatory, (...) (25 years ago, 4-May-99, to lugnet.robotics.rcx.legos)
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| | Re: HOWTO v 0.1
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(...) Not ATM. (If I get gdb actually *working* with the LegOS I'll do a little HOWTO for that and stick it on the web, though... has anyone got it working right yet? I'm not stuck or anything, I just haven't finished getting it running.) (25 years ago, 4-May-99, to lugnet.robotics.rcx.legos)
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| | tm-and-ir.c
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Is anyone else having problems with this? The receive and display part works fine but it won't send "Hello World" when I press the View button. The srec from the LegOS home page works fine but if I build it myself it doesn't. I've tried both the web (...) (25 years ago, 1-May-99, to lugnet.robotics.rcx.legos)
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| | Re: I'm being stupid. But how?
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(...) Hahaha, regarding that LegOS is more of a library than an OS, my opinion too. But you have to admit the name has some appeal, even if it is something of a misnomer... :) Clearly it says something about TLG's attitude toward LegOS that they (...) (25 years ago, 3-May-99, to lugnet.robotics.rcx.legos)
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| | Re: HOWTO v 0.1
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(...) Thanks (I think...) (...) Because I've found that it is significantly faster, and nearly canonical (as, technically speaking, it is part of the same domain, despite being hosted elsewhere(Stanford, IIRC.)) The only reason I found it in the (...) (25 years ago, 3-May-99, to lugnet.robotics.rcx.legos)
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| | I'm being stupid. But how?
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I've written a test program using the 19990330 LegOS snapshot[1], and it's misbehaving oddly. The program looks like this: (the headers are the result of my frobbing the LegOS headers to refer to <mindstorms/{legOS header}>...) #include (...) (25 years ago, 29-Apr-99, to lugnet.robotics.rcx.legos)
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| | Re: HOWTO v 0.1
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(...) Not half bad IMHO. But why point egcs searchers at ftp://go.cygnus.com/...gcs-1.1.2/ ? The canonical site is ftp://egcs.cygnus.co...cs-1.1.2/. egcs-1.2 will be out fairly soon. There have been changes to the h8300 support, but the changes are (...) (25 years ago, 29-Apr-99, to lugnet.robotics.rcx.legos)
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| | Read me first! Re: case statement doesn't work- any clue?
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Nevermind. Dangit. Forgot break statements like a moron. -Luis (...) ###...### God was my co-pilot, but we crashed in the mountains and I had to eat him. -bumper sticker ###...### (25 years ago, 3-May-99, to lugnet.robotics.rcx.legos)
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| | Re: case statement doesn't work- any clue?
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(...) Doh! You haven't put any breaks between the cases. BTW, if LegOS can change the semantics of C its cleverer than I thought ... :-) Cheers, Ben. -- (URL) grandfather once told me that there are two kinds of people: those who work and those who (...) (25 years ago, 3-May-99, to lugnet.robotics.rcx.legos)
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| | case statement doesn't work- any clue?
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I'm trying to program some very rudimentary debugging stuff- just outputting variables to the screen. Basically, I want to use a switch/case statement to read an integer variable (in this case ID_number) which is then linked (by the case statement) (...) (25 years ago, 3-May-99, to lugnet.robotics.rcx.legos)
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| | Re: Lego Network Protocol questions
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(...) Oops, I must've just caught the tail end of the conversation. I assumed the standard [lame] lego protocol was being discussed, not a custom protocol. Sorry. Dave (25 years ago, 2-May-99, to lugnet.robotics.rcx.legos, lugnet.robotics)
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| | RE: Lego Network Protocol questions
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With all of the talk about networking and IP embedding and such, and since I'm working on a proprietary '485 master/slave protocol for a client, I had to dust off a GREAT university text on networks. It devotes an entire chapter to ALOHA and slotted (...) (25 years ago, 1-May-99, to lugnet.robotics.rcx.legos, lugnet.robotics)
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| | Re: Lego Network Protocol questions
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(...) Dave, did you catch the crosspost from lugnet.robotics.rcx.legos? I think there were details discussed there that may or may not have amounted to a fairly specific proposal for a protocol for LegOS. Anybody care to summarize whatever was (...) (25 years ago, 1-May-99, to lugnet.robotics.rcx.legos, lugnet.robotics)
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| | Re: Lego Network Protocol questions
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(...) Transmit whenever you feel like it and hope you didn't obliterate data coming from the other direction. Rudimentary, but still quite effective given the typical use pattern with is host driven command/response. With RCX to RCX communication (...) (25 years ago, 30-Apr-99, to lugnet.robotics.rcx.legos, lugnet.robotics)
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| | Lego Network Protocol questions
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Hi all. I came to the discussions on the LNP a bit late and was wondering if the following questions had been discussed (I flipped through an old Communications course book and noted some thoughts): - Can we do Carrier Sense *whilst* we are (...) (25 years ago, 30-Apr-99, to lugnet.robotics.rcx.legos, lugnet.robotics)
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