 | | Today's Challenge
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A cry for help: I am trying to implement Ben Williamson’s Fetchbot (URL). I am happy that I have the mechanics right. The problem is that I want to emulate Ben’s code in Robolab. (Yes, there are reasons I use Robolab which include me being a teacher (...) (20 years ago, 4-Jan-05, to lugnet.robotics.rcx.robolab)
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| | Re: questions on events
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(...) This is where you use the event fork(s) that you asked about in a different message. You nest these forks to determine which event has been triggered. (...) Robolab is just a LabVIEW program. Viewed in that context, it is an amazing bit of (...) (20 years ago, 3-Jan-05, to lugnet.robotics.rcx.robolab, lugnet.robotics.rcx.nqc)
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| | Re: questions on events
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(...) Yeah, my fault. I said two things that do not have to follow. Yes, you can use one event monitor to watch more than one event... and yes, you can't nest event monitoring statements. I've not used an event watcher to monitor more than one event (...) (20 years ago, 3-Jan-05, to lugnet.robotics.rcx.robolab, lugnet.robotics.rcx.nqc)
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| | Swan Firmware
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I have installed the new Swan Firmware via Brixcc 3.3.7.8 using standard nqc coding works ok. I'm having problems trying to include any of the new code. Question 1 How do we use the Swan.nqh file Question 2 Can we use the new variables defined in (...) (20 years ago, 3-Jan-05, to lugnet.robotics.rcx.nqc)
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| | RE: Formula container?
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Ok, I got it... Thanks to the Tufts site. (URL) is kind of odd that the navigation is to "create ---> constant"... "constant?" Hmmm... -- E (...) (20 years ago, 3-Jan-05, to lugnet.robotics.rcx.robolab, lugnet.robotics.rcx.nqc)
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| | RE: Define Event icon...
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(...) Hi Jerry, Event Handling can be a long chapter to talk about. I am sure you will find a more well-explained chapter in some OS or just language book such as C++, or even in Java. Briefly speaking, event is a piece of real time information, (...) (20 years ago, 3-Jan-05, to lugnet.robotics.rcx.robolab)
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| | Formula container?
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I am trying to compare the light value of two sensors, namely s1, & s2 . I don't want to go through the long route which is to save the light values from different sensors to different container, then, compare them. How about using "formula (...) (20 years ago, 3-Jan-05, to lugnet.robotics.rcx.robolab, lugnet.robotics.rcx.nqc)
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| | RE: questions on events
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(...) Hmm..., notice that the start monitoring icon allows to watch for multiple events within the same task. If each task can only monitor a single event, that feature being there does not quite make sense. (...) This is why I suspect the "event" (...) (20 years ago, 3-Jan-05, to lugnet.robotics.rcx.robolab, lugnet.robotics.rcx.nqc)
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| | RE: Define Event icon...
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Yes, Tom. This is exactly what I was trying to do... To trigger an event when it becomes 3. Great! Thank you very much! Cool! (...) (20 years ago, 3-Jan-05, to lugnet.robotics.rcx.robolab, lugnet.robotics.rcx.nqc)
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| | Re: Define Event icon...
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(...) The condition of being equal to 3 is not an event. However, the action of transitioning to 3 is. I'd use the "set up normal event" command followed by the "define event" command. Set the upper threshold to 4, the lower to 2, and the duration (...) (20 years ago, 2-Jan-05, to lugnet.robotics.rcx.robolab)
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| | Re: questions on events
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(...) See previous post for the "I-don't-actually-do-Robolab" disclaimer, but, since Robolab & NQC both work on the same firmware... You can monitor multiple events, but only in *different* tasks. In other words, (to my knowledge) you can not "nest" (...) (20 years ago, 2-Jan-05, to lugnet.robotics.rcx.robolab, lugnet.robotics.rcx.nqc)
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| | Re: Define Event icon...
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(...) I fear I became very frustrated with Robolab, so can't help you *specificly* with that enviroment, but... at a firmware level, events can "watch" several different sources: sensors, timers, three simple counters... however, they can not be (...) (20 years ago, 2-Jan-05, to lugnet.robotics.rcx.robolab, lugnet.robotics.rcx.nqc)
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| | Re: Define Event icon...
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(...) Elizabeth, you are a few steps ahead of me in working with 'Events'. Could you explain, in plain English, what exactly an 'Event' is? ...it's not a 'State' because it can be a constant or a variable. Yet you can have an 'Event Fork' which is (...) (20 years ago, 2-Jan-05, to lugnet.robotics.rcx.robolab, lugnet.robotics.rcx.nqc)
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| | Define Event icon...
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Hi I'd like to set up an event to watch for a containers value = 3. I am trying to use the "Define Event" icon, but has no luck yet. Just wonder if there is anyone out there has suggestion. The official doc does not explain much different from what (...) (20 years ago, 2-Jan-05, to lugnet.robotics.rcx.robolab, lugnet.robotics.rcx.nqc)
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| | questions on events
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Are events stackable? Or it works more like "signal()", e.g. in C? e.g. I have 2 different light sensor events set to watch for value higher than 42, yellow & blue. Let say both sensors read 45 at the same time, RCX returns only one event being (...) (20 years ago, 2-Jan-05, to lugnet.robotics.rcx.robolab, lugnet.robotics.rcx.nqc)
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| | crosscompiler does not compile arrays of objects
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Hello! I made a cross-compiler with the sources of gcc-3.4.2 and tried to compile this: Behavior a(); Behavior b() Behavior behaviors[] = {a,b}; ... Make fails with the error message: conversion from Behavior()() to non-scalar type Behavior (...) (20 years ago, 30-Dec-04, to lugnet.robotics.rcx.legos)
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| | RE: brickOS port to FreeBSD
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John, I'm interested in how you got the USB tower working... I've got a Tcl package that talks to the LEGO USB tower driver under Windows, but nothing for FreeBSD yet. I'm willing to share the Tcl script with you if I ever get the tower working (...) (20 years ago, 23-Dec-04, to lugnet.robotics.rcx.legos)
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| | Re: using MacNQC with Spybotics via USB Tower
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(...) It is a capability of NQC but I was mistaken about the Mac version of NQC. It currently does not support the Spybotics target when the USB tower is used. One of the first changes I made when I took over NQC was to add the ability for NQC to (...) (20 years ago, 29-Dec-04, to lugnet.robotics.spybotics, lugnet.robotics.rcx, lugnet.robotics.rcx.nqc)
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| | Re: RCX IR Transceiver Circuit
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(...) Indeed, you probably had something wrong there: I checked the battery of a serial tower I didn't use for a very long time, it was still fully charged. Philo (20 years ago, 29-Dec-04, to lugnet.robotics.rcx, FTX)
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| | Re: RCX IR Transceiver Circuit
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(...) I can verify the data on all but the zener and 6Cp transistor. I intended to put it in a text file with the diagram, but I'll add it to the diagram instead. The 1Kp and 3Kp transistors have equivalents of BC548B and BC558B, which are common (...) (20 years ago, 28-Dec-04, to lugnet.robotics.rcx, FTX)
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