 | | Re: pass by refrence or value?
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Some basic facts about C semantics: As already stated, globals MUST be volatile if they are accessed by more than one thread, otherwise reads and writes can be out of sync. What are the types of the variables involved? Scalar values like integers (...) (24 years ago, 25-Mar-01, to lugnet.robotics.rcx.legos)
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| | Re: Obstacle detection : infrared sensor ??
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(...) We have done this in C using LegOS (it is much easier to get it off the ground in nqc). The principle is simple: * Attach the light sensor in front of the brick, close to the IR tranceiver. preferably in a low position, since you want to (...) (24 years ago, 25-Mar-01, to lugnet.robotics.rcx.legos)
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| | .lx format
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Hi! I am presently helping some PhD students here at my university prepare the labs for a real-time course using LegOS. As part of the course, we want our students to experience a modern development environment for embedded systems, and have (...) (24 years ago, 25-Mar-01, to lugnet.robotics.rcx.legos)
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| | Re: Obstacle detection : infrared sensor ??
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(...) Yeah, I built a robot and programed it whith a nqc program that someone else wrote. I dont't remember who and I don't have any links, but I do remember how it worked The rcx would send out a infarad message every cauple of mlseconds and a (...) (24 years ago, 25-Mar-01, to lugnet.robotics.rcx.legos)
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| | Obstacle detection : infrared sensor ??
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Hey.. I don't know if this is a LegOS question, but here it goes... Is it possible to detect obstacles via the infrared sensor, before you bump into them ?? Like measuring reflection of infrared light or something... If it is... how ?? can anybody (...) (24 years ago, 24-Mar-01, to lugnet.robotics.rcx.legos)
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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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| | Re: video game type thing...
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(...) havent followed the whole conversation here, but if ur doing an "if "test and it doesnt hit when it should, you might consider displaying the TOUCH_2 variable on the display just before the "if" test, it might not be what you think it is! (...) (24 years ago, 22-Mar-01, to lugnet.robotics.rcx.legos)
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| | video game type thing...
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Well, it still doesn't work even with the if(TOUCH_2){} instead of if(TOUCH_2 == 1){} . Any ideas? Nick H. (24 years ago, 22-Mar-01, to lugnet.robotics.rcx.legos)
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| | Re: More than one Source C file
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Please ignore this message, Dyanimc objects :) - Ciaran (24 years ago, 20-Mar-01, to lugnet.robotics.rcx.legos)
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| | More than one Source C file
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Hi, I'm trying to compile together several C++ objects, each of which is contained in a seperate .c file, with a seperate header file, in GCC, I'd just use gcc foo.c fooa.c foob.c -o out.exe ... or whatever, how do I adjust the legos Makefile to (...) (24 years ago, 20-Mar-01, to lugnet.robotics.rcx.legos)
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