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 | | Re: Event monitoring
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| (...) You can generate a message internally with InternalMessage(X); but X must be a constant (can't be a variable). I'm not sure if this will trigger the message event - I haven't tried it myself. If it does trigger an event, you could use the (...) (24 years ago, 15-Mar-01, to lugnet.robotics.rcx.nqc)
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event
(score: 0.914)
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| | LNP in Java
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| Hi there, Few weeks ago, someone's asked if there were any Java handler for LNP. Here we are ! There is one now. Including with this mail is the Java listing. What to do 1) download the JVM 2) download java communication API from Sun (lets you drive (...) (24 years ago, 13-Jan-01, to lugnet.robotics.rcx.legos)
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event
(score: 0.914)
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| | undefined reference to `___ucmpsi2'
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| I get this error when linking if I have the following in my source code in a wait_event function: #define THRESHOLD (unsigned short)50 static wakeup_t light_found(wakeup_t sens_num) { switch (sens_num) { case 2: return (LIGHT(SENSOR_2) > THRESHOLD); (...) (24 years ago, 18-Jan-01, to lugnet.robotics.rcx.legos)
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event
(score: 0.913)
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| | Parallel sensor problem
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| Hi, all. I'm experiencing a strange problem. I'm using two RCXs to control my crane, and I have a single touch sensor connected to input 1 on RCX 1 & input 2 on RCX 2. However, when I run both programs, which both have a wait_event function like: (...) (24 years ago, 23-Jan-01, to lugnet.robotics.rcx.legos)
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event
(score: 0.913)
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| | LEGO Brick Battles
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| I’ve started a small (but growing) league of LEGO robot designers. We have our robots engage in different contests, including combat. We’re looking to recruit more members. Specifically, were looking for interested folks in the Chicagoland area. Our (...) (24 years ago, 24-Jan-01, to lugnet.robotics)
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event
(score: 0.912)
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| | sleep efficientcy
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| Hi again, i would like to know which is more efficient in code? having a while loop which is checking for a condition to be true and sleeping for an arbitary value while it is not, or using a wait_event statement passing a function pointer to a (...) (24 years ago, 25-Jan-01, to lugnet.robotics.rcx.legos)
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event
(score: 0.912)
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| | Event monitoring
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| Hi all, I have just switched to NQC 2.3 b1 (from 2.2) to implement the new features of the RCX 2.0. I have used event monitoring to clean up my if/else statements that control outputs. This works fine with all legal event sources, but I use allot of (...) (24 years ago, 14-Mar-01, to lugnet.robotics.rcx.nqc)
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event
(score: 0.912)
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| | Spirit.ocx and Regsrv32
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| Hi folks, It's less than 12 hours away from rtlToronto 7, and I need to prep a laptop for general use at our the Toronto Lego Robotics Event. :) I'm having some trouble registering Spirit.ocx with Regsrv32.exe. It gives me an error, (...) (24 years ago, 17-Feb-01, to lugnet.robotics)
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event
(score: 0.910)
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| | Re: multiple "execi" with different priorities
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| (...) That line seems ok to me. Setting priority for a task above 10 (normal priority) may cause starvation to other tasks. This depend on what your function process() does. If it never waits (using calls like wait_event(), sleep(), sem_wait()...) (...) (24 years ago, 21-Feb-01, to lugnet.robotics.rcx.legos)
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event
(score: 0.909)
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| | Re: Robotics Competition - reg deadline 2/2/2001
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| As one of the founders of this competition, I would be happy to answer any questions anyone would have regarding this event. Steven B. Combs Associate Professor / Instructional Technologist Ivy Tech Community Collge of Indiana 3501 First Avenue (...) (24 years ago, 26-Feb-01, to lugnet.robotics.events)
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event
(score: 0.909)
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| | Re: DDK - What use are they / lower prices seen
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| (...) These are (far better) comments than I was going to make wrt to scout and micro-scout. Essentially, the scout and micro-scout allow you to experiment with team and cooperative robotics--as Miles said: "a higher level". I bought my 7.5 YO son a (...) (24 years ago, 26-Feb-01, to lugnet.robotics)
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event
(score: 0.909)
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| | Kernel proposal - message passing and signals
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| Hi, I have been poking around in the legOS kernel and it appears that there is no formal way to pass messages between tasks - only shared protected resources through semaphores. I intend to modify the kernel to add the features descried below. Note (...) (24 years ago, 13-Mar-01, to lugnet.robotics.rcx.legos)
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event
(score: 0.907)
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| | Re: video game type thing...
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| (...) Are you doing the if() in some kind of loop, or an event function? If the button isn't pressed at the exact time you happen to execute the statement, it won't work. It's difficult to help debug your code without seeing your code 8?) ROSCO (24 years ago, 22-Mar-01, to lugnet.robotics.rcx.legos)
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event
(score: 0.907)
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| | code
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| Hi, I'm a newbie to c++ and legOS. Here is my code. Do you know what is wrong with it cause I don't. Thanks /* s.c*/ #include <unistd.h> #include <dmotor.h> #include <dsensor.h> int main(int argc, char **argv) { /* turn it on */ (...) (24 years ago, 26-Mar-01, to lugnet.robotics.rcx.legos)
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event
(score: 0.906)
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| | Re: Electrical Data Link between 2 RCXs
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| Thanks for the info on the electric datalink. It's a clever idea that I never would have thought of myself. It seems to me that you could cut down on your transmission time if you changed the shape of your pulse train. The pauses between bits don't (...) (24 years ago, 26-Mar-01, to lugnet.robotics.rcx.nqc)
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event
(score: 0.906)
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| | Re: Assembly in my C-program
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| (...) If you want to drive directly the motors you should first disable motor handling in legOS (remove CONF_DMOTOR definition in config.h). Then you can create a high priority task that switches motors on and off writing in the motor output port. (...) (24 years ago, 28-Mar-01, to lugnet.robotics.rcx.legos)
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event
(score: 0.906)
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| | Re: Running IR in the background
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| Hannes, I got it to work last night. I'm modifying Markus Noga rover.c code (included when you download legos files) to include support for IR port and (passive) light sensor. Great code to look at if you're just learning C/C++. Basically, the (...) (24 years ago, 27-Mar-01, to lugnet.robotics.rcx.legos)
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event
(score: 0.906)
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| | "Speed" of control statments
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| I have been currently working on a control program that necessitates the highest reaction time possible. Does anyone what the fastest control statements would be using NQC (making the outputs react to sensor values as fast as possible)? i.e. Which (...) (24 years ago, 30-Mar-01, to lugnet.robotics.rcx.nqc)
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event
(score: 0.906)
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| | Re: BattleBricks
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| Will Gorman <willgorman@hotmail.com> wrote in message news:GBFt8L.F6F@lugnet.com... (...) I've been doing exactly this kind of thing with a few other people (all the robots are human-controlled, but mostly with wires) -- it seems fairly popular. (...) (23 years ago, 8-Apr-01, to lugnet.robotics.rcx)
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event
(score: 0.905)
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| | Re: code
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| (...) [snip] (...) Can't see anything glaringly obvious, except you've used different priorities for your tasks. As they're infinite loops with no waiting, it's probably better to make their priorities equal. But the best way is probably to do all (...) (23 years ago, 19-Apr-01, to lugnet.robotics.rcx.legos)
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event
(score: 0.903)
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