 | | Re: Aborting from ISR
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(...) This should be : IsISRFree? 'UserISR ['] NoOp = ; of course. (23 years ago, 14-Jul-02, to lugnet.robotics.rcx.pbforth)
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| | Re: Aborting from ISR
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(...) To remove your program from the UserISR just set 'UserISR to ['] NoOp - or even better: to the previously stored old value. (...) Yes, you just have to read the current value of 'UserISR. If no other program is hooked to the ISR this is the (...) (23 years ago, 14-Jul-02, to lugnet.robotics.rcx.pbforth)
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| | Running legOS under DJGPP Status
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With increase discussion about running legOS under DJGPP I started investigating this process. The following is a status report of where I am and the steps I took to get there. Beware that I have jumped around some, left some tasks unfinished, and (...) (23 years ago, 14-Jul-02, to lugnet.robotics.rcx.legos)
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| | whats up with lnp_init?
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i have 2 threads (pthreads), 1 that sends and 1 that recieves on my PC. both of these runs in while(1) sentences. so.. i thought lnp_init was to be run only once, but unless i run the lnp_init routine each time i want to send a message nothing get (...) (23 years ago, 14-Jul-02, to lugnet.robotics.rcx.legos)
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| | Alternative uploader for mindstorm running windows 2000 or linux?
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well thats my qestion running around on the web didn't gave anything just like to know. Best regards Marcel (23 years ago, 13-Jul-02, to lugnet.robotics)
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| | Aborting from ISR
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Hi, Is there any way of ABORTing the current program from the ISR ? I want to attach a routine to 'UserISR and have it ABORT and then execute POWER_OFF when the off/on button is pressed. I would also like to know whether a user program or the idle (...) (23 years ago, 14-Jul-02, to lugnet.robotics.rcx.pbforth)
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| | Re: Rechargeable batteries and the RCX
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In article (...) Depends. Rechargeable alkaline have a higher nominal voltage, but also higher internal resistance than NiMH. Under light load the alkalines will provide a higher voltage for a longer period of time. Under heavy load, they provide (...) (23 years ago, 14-Jul-02, to lugnet.robotics)
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| | Re: Rechargeable batteries and the RCX
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(...) NiCd batteries are cheap, but that's about the only advantage to them. I'd suggest either NiMH or rechargeable alkaline depending on your usage habits. I actually use both types of batteries, but I probably won't bother replacing the (...) (23 years ago, 14-Jul-02, to lugnet.robotics)
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| | Re: Rechargeable batteries and the RCX
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(...) Well, all Alkaline batteries (rechargeable or not) do this if left in equipment in a discharged state. Both NiMH and rechargeable alkalines have a limited life and have to be discarded sooner or later. Some of the older ones claimed to be good (...) (23 years ago, 15-Jul-02, to lugnet.robotics)
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| | Re: Rechargeable batteries and the RCX
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Thanks to all that responded to my questions regarding batteries. I was concerned about a post I read in rec.toys.lego in which someone reported problems after switching to alkaline rechargeable batteries (the post can be seen at the following URL): (...) (23 years ago, 14-Jul-02, to lugnet.robotics)
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| | *** legOS new name - reminder ***
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What is the better name for legOS? Is it osmOS or brickOS? Make up your mind and send your vote, either for brickOS or for osmOS, with the usual identification phrase, to legOS-namepoll@gmx.de The last day for your vote is Thursday, 18th. Regards, (...) (23 years ago, 14-Jul-02, to lugnet.robotics.rcx.legos)
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| | Re: RCX to RCX communication
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(...) Mark, I was a TA(Teaching Assistant) for a course at Brown University that invovled building robots with the mindstorms kit. Go to the web site: (URL) and click on the link to take you to the normal page. Then go to the "LegOS" section fo the (...) (23 years ago, 14-Jul-02, to lugnet.robotics.rcx.legos)
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| | RCX to RCX communication
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I have studied the sources on the WEB for LNP but have not found any examples of C or C++ code for RCX to RCX communication. I have two RCXs and would like to build something that takes advantage of 6 inputs and 6 outputs. Do you have a sample you (...) (23 years ago, 14-Jul-02, to lugnet.robotics.rcx.legos)
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| | Solicitud de Informacion
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LEGO Estimados Señores: Me es grato dirigirme a ustedes para manifestarles mi enorme interes en recibir información sobre todo lo que tenga que ver con Robotica (accesorios de hardware, software, lenguajes de programación, nuevas tecnologías, (...) (23 years ago, 13-Jul-02, to lugnet.robotics)
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| | RE: Rechargeable batteries and the RCX
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Thanks for the alert, but the batteries don't pose a threat if used properly. Just don't incinerate or eat them. Maybe it was Li-ion batteries I was thinking of that lose their charge sitting dormant... In any event, does anyone have specific and (...) (23 years ago, 13-Jul-02, to lugnet.robotics)
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| | RE: Audio Difficulty with Dacta MS RoboLab 2.5
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The audio on mine doesn't play either. This appears to be a bug in the program that plays the video and audio files. I checked out the CD. The audio files are separate from the video files. They worked just fine when I manually played them. The (...) (23 years ago, 13-Jul-02, to lugnet.robotics)
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| | RE: Rechargeable batteries and the RCX
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Aren't rechargeable alkaline supposed to be better than NiMH? Don't NiMH batteries lose their charge just "sitting around" if not placed in a trickle charger? (...) (23 years ago, 13-Jul-02, to lugnet.robotics)
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| | Audio Difficulty with Dacta MS RoboLab 2.5
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We installed the Dacta MS RoboLab 2.5 on a Win98 desk top machine and found that the audio on the video RCX start up movie would not play. Dacta could offer no explanation. Anyone had this problem and solved it? -- Wayne T. Watson (121.015 Deg. W, (...) (23 years ago, 13-Jul-02, to lugnet.robotics)
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| | Re: Announcing BricxCC release 3.3.5.6
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(...) I wanted to publicly thank Rob Doucette for reporting the Access Violation bug and for helping me track down where it was occurring. I'd never have fixed it without his help. A big thank you also goes to David Schilling for reported the (...) (23 years ago, 13-Jul-02, to lugnet.robotics.rcx, lugnet.robotics.rcx.nqc, lugnet.robotics.scout)
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| | Re: Rechargeable batteries and the RCX -- Firmware error
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One or more of the battery contacts could have lost its springiness. Try bending all the contacts in towards the other side of the compartment (not too far!). Also, the contacts that supply the power from the batteries to the circuit board may be (...) (23 years ago, 13-Jul-02, to lugnet.robotics)
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| | Re: Rechargeable batteries and the RCX
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Thanks for asking this question. I've been meaning to do so myself. One of the books shows a modified RCX using a 9.6v RC battery pack. Another (or possibly the same one) talks about someone who increased the voltage of rechargables by using 5 AA, 1 (...) (23 years ago, 13-Jul-02, to lugnet.robotics)
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| | Re: How do I switch other devices with my RCX.
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(...) Or can't this be done with just one switching device? Thanks in advance! Remko (23 years ago, 13-Jul-02, to lugnet.robotics)
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| | Re: detecting memory leaks
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In case anyone attempts to use the mm_defrag() posted previously... you will need the following update to mm_try_join() //! check for free blocks after this one and join them if possible /* \param ptr pointer to size field of current block \return (...) (23 years ago, 13-Jul-02, to lugnet.robotics.rcx.legos)
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| | Re: detecting memory leaks
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Jason, Excellent points! I like where this is going. "Jason Clark" wrote <snip> (...) See below. (...) then (...) Yes, it uses mm_try_join() --- here it is: //! defragment free blocks /*! use mm_try_join on each free block of memory */ void (...) (23 years ago, 12-Jul-02, to lugnet.robotics.rcx.legos)
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| | RE: Rechargeable batteries and the RCX -- Firmware error
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Our class uses NiMH batteries. Haven't seen any problem... but we do have one problem off and on and I guess that could be related. On one RCX, we do get an error that the firmware needs to be downloaded quite often, and the battery level on the RCX (...) (23 years ago, 12-Jul-02, to lugnet.robotics)
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| | Re: Rechargeable batteries and the RCX
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(...) Definitely use NiMH's. NiCd's are a problem - they only generate 1.2 volts instead of the usual 1.5 of disposable batteries - and I've found that this *sometimes* causes problems with the RCX. I'm not sure exactly what the situations where it (...) (23 years ago, 13-Jul-02, to lugnet.robotics)
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| | Rechargeable batteries and the RCX
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Does anyone have any comments about using rechargeable batteries in the RCX? Has anyone had any bad experiences with this? Can anyone recommend whether NiMH is better or worse than NiCd? Thanks. Laura (23 years ago, 12-Jul-02, to lugnet.robotics)
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| | Re: MIBO Kits, Any interest?
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(...) That would make more sense to me. I have a complete RIS and Jim Sato's book, so 'everything else' would probably be interesting. I think most potential buyers wouldn't balk at the idea of ending up with a few inexpensive pieces that duplicate (...) (23 years ago, 12-Jul-02, to lugnet.robotics)
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| | AFOL Meetup?
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Dunno if any Lego fans out there have heard about this new 'MEETUP' internet service, I went to a meeting that they arranged a couple of weeks ago on a different subject and it was a great success. The idea is that their web site suggests a day and (...) (23 years ago, 13-Jul-02, to lugnet.robotics)
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| | Re: detecting memory leaks
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(...) Please, post. (...) I'm guessing you defrag using mm_try_join()? malloc() uses this to defrag the beginning of the pool until it finds a big enough block (which can then be split again if its too big); Defragging during idle would save this (...) (23 years ago, 12-Jul-02, to lugnet.robotics.rcx.legos)
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| | Announcing BricxCC release 3.3.5.6
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(...) I was updating the website earlier today which may have caused some disruption. The link worked for me a few minutes ago. This is as good a time as any to post about my new release of BricxCC. Version 3.3.5.6 fixes an Access Violation during (...) (23 years ago, 12-Jul-02, to lugnet.robotics.rcx, lugnet.robotics.rcx.nqc, lugnet.robotics.scout)
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| | Re: anyone know how to check free space on RCX?
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(...) Thanks for conducting the test... being 200+ miles away from my RCX this was bugging me :). My sources (gcc-2.95.2) have the same #define... but with the following about 120 lines earlier: /* Make int's 32 bits. */ #define TARGET_INT32 (...) (23 years ago, 12-Jul-02, to lugnet.robotics.rcx.legos)
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| | RE: Gutting an optical mouse - Part I
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(...) Gee, that's too bad. That means there are only three states that can be distinguished. It seems like they could have easily increased the resolution by 1/3, without any cost. (23 years ago, 12-Jul-02, to lugnet.robotics)
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| | Re: anyone know how to check free space on RCX?
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John A. Tamplin, Jason Clark, Jochen Hoenicke and Michael J Ash: Thank you all for addressing these issues! It all make sense after reading the preceeding messages. I appologize for causing confusion. I am glad, however, to get it straight. ??So (...) (23 years ago, 12-Jul-02, to lugnet.robotics.rcx.legos)
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| | detecting memory leaks
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In the thread "anyone know how to check free space on RCX?" the issue of checking for memory leaks was raised. I wanted to mention that I have some code that may help in that area. I wrote a function for the memory manager called mm_defrag() It (...) (23 years ago, 12-Jul-02, to lugnet.robotics.rcx.legos)
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| | RE: Gutting an optical mouse - Part I
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(...) I thought this was an error to, so I spent about an hour triplechecking my findings. Bear in mind that the scroll wheel doesn't need 7.5-degree-per-step accuracy, which is what that extra bit would give. This is a chart of the data I collected (...) (23 years ago, 12-Jul-02, to lugnet.robotics)
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| | Re: MIBO Kits, Any interest?
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(...) ...or at least if you looked at 100 people who might have the desires, abilities and budget to build the beast, you'd see 100 different inventory needs. Some might have one RIS, others two, others one - plus a bunch of ad-hoc parts. I think (...) (23 years ago, 13-Jul-02, to lugnet.robotics)
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| | Re: anyone know how to check free space on RCX?
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(...) The header is ok, but int is 2 bytes = 16 bit. You can check this with this highly optimized program: #include <conio.h> int main(int argc, char *argv[]) { lcd_int( sizeof( int ) ); for(;;) ; return 0; } And in the kernel sources, mm.c says (...) (23 years ago, 12-Jul-02, to lugnet.robotics.rcx.legos)
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| | Re: anyone know how to check free space on RCX?
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(...) This can't be right. I'm about 99% sure that all of the ints I've used with my legOS programs have been 2 bytes. When using LNP to send RCX ints to a PC, for example, you have to use short on the PC end of things to make it all work right. (...) (23 years ago, 12-Jul-02, to lugnet.robotics.rcx.legos)
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| | Re: Gutting an optical mouse - Part I
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(...) It appears to me there is a slight mistake here. According to this, there is no way to distinguish between the first row and the second. I assume the second should be 10, so it would go 00 10 11 01. Steve (23 years ago, 12-Jul-02, to lugnet.robotics)
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