 | | 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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| | Re: IS free()'s operation atomic?
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(...) I agree, free() is not ISR safe. One thread can get preempted after the check but before the store, and a second thread can adjust mm_first_free, making the first thread's check invalid. -Kekoa (25 years ago, 29-Apr-99, to lugnet.robotics.rcx.legos)
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| | Re: Compiling NQC
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(...) Of course, I did not mean to imply she is off course. (...) > > (...) (25 years ago, 29-Apr-99, to lugnet.robotics, lugnet.robotics.rcx.nqc)
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| | IS free()'s operation atomic?
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Hi all I think that free() operation in mm.c is not ISR safe in multitasking mode. This operation is not keep coherence about value of mm_first_free,is it? ---...--- in mm.c ---...--- // for task safe operations, free needs to be // atomic and (...) (25 years ago, 29-Apr-99, to lugnet.robotics.rcx.legos)
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| | Re: Compiling NQC
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Well what do you know...I install gcc 2.8.0 and still no luck. But a clue lurks in the docs....and since I had none (clues that is) I read on. To compile c++ you must install libstdc 2.8.0. I find it and compile into gcc. Just for luck I grab the (...) (25 years ago, 29-Apr-99, to lugnet.robotics.rcx.nqc)
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| | NQC 1.3 has been released
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I just posted NQC 1.3 to the main web site: (URL) an excerpt from the readme... version 1.3 ---...--- Calls to inline function may now be made before their definition. abs() and sign() operators added. SetWatch() added to rcx.nqh. Toggle() added to (...) (25 years ago, 28-Apr-99, to lugnet.robotics.rcx.nqc, lugnet.robotics)
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| | RE: Compiling NQC
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I will pull gcc down tonight and try a fresh install...the gcc installation that came with openlinux is what I installed, and I am seeing make problems elsewhere now. Rich Thompson rich_thompson@cmcsmart.com (URL) -----Original Message----- (...) (25 years ago, 28-Apr-99, to lugnet.robotics.rcx.nqc)
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| | Re: Compiling NQC
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Rich Thompson <richone@midsouth.rr.com> wrote in message news:FAvu5G.4Hw@lugnet.com... (...) This sounds like gcc isn't installed properly. cc1plus is the first stage of the compiler. Can you compile anything properly? alex (25 years ago, 28-Apr-99, to lugnet.robotics.rcx.nqc)
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| | Compiling NQC
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I am delving into the world of Linux (I have abandoned BSD and Windows but keeping my Mac) and I am having trouble compiling NQC in Caldera's OpenLinux 2.2 for i386. A basic output of the errors I am seeing: gcc -c -O6 -pipe -m486 -Iplatform (...) (25 years ago, 28-Apr-99, to lugnet.robotics.rcx.nqc)
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| | Re: Typo
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(...) NQC 1.3 is pretty minor... inline functions can be used before they are defined. I added abs() and sign() support. Technically they are not functions, but are operators with a function syntax (like sizeof in C). A couple new functions (...) (25 years ago, 28-Apr-99, to lugnet.robotics.rcx.nqc)
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| | Re: Typo
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Can you give us a "press release" about what's new in 1.3? (...) Joel Shafer joel@connect.net (25 years ago, 28-Apr-99, to lugnet.robotics.rcx.nqc)
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| | Re: Typo
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Thanks - I had already noticed that and fixed it in the upcoming 1.3 release, which has been "ready to go" for about 3 weeks now. I just have to take the time to do all of the platform builds, update the web site, etc. Dave (...) (25 years ago, 28-Apr-99, to lugnet.robotics.rcx.nqc)
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| | Typo
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In browsing the rcx.nqh file, I found that the SMODE_CELSIUS input mode constant is misspelled with a 'c' instead of an 's'. Jonathan (25 years ago, 27-Apr-99, to lugnet.robotics.rcx.nqc)
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| | Re: RcxCC Help!
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William: Do you have the official Mindstorms software loaded that came with the RCX? Most of the 3rd party programs need the main program loaded inorder for their program to run properly. Hope this helps... Best Regards, Patrick McLean William Ng (...) (25 years ago, 26-Apr-99, to lugnet.robotics.rcx.nqc)
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| | Re: RcxCC Help!
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OH! i forgot i need to install the mindstorm software before i use RcxCC!! now it works, sorry guys. (...) (25 years ago, 26-Apr-99, to lugnet.robotics.rcx.nqc)
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| | RcxCC Help!
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i downloaded the RcxCC version 2.2 and extracted it with winzip. when i try to run the RcxCC.EXE, my system say "Exception EOleSysError in module RcxCC.EXE at 00053AF9. Class not registered" does anyone know what it is and what can i do?? thanks in (...) (25 years ago, 26-Apr-99, to lugnet.robotics.rcx.nqc)
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| | Rom sensor read routine
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In writing some sensor code yesterday/today (it's 6 am), I passed over the ROM sensor code at 14c0. The documentation has been put in the usual place. The rotation code is pretty simple: the expected state machine, with split points between the four (...) (25 years ago, 25-Apr-99, to lugnet.robotics.rcx.legos)
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