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Try setting the classpath to point to the place where the install class is. I have this problem a few times, and most of the time I can't get it to work. :-( Most of the time people just have to experiment as very few ever seem to report having this (...) (25 years ago, 24-May-01, to lugnet.robotics.rcx.java)
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| | Re: LVI install problems
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(...) Yes, this is with the compiled classes. Trying from the source didn't work either. Could it have something to do with the CLASSPATH variable? I used the command set CLASSPATH=C:\Steve\L...\tools.jar before trying "java install" from the (...) (25 years ago, 23-May-01, to lugnet.robotics.rcx.java)
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| | Re: LVI install problems
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Which version did you download? I assume you got the compiled classes? If you downloaded the source, make sure all the classes are compiled, and that you are in the directory where the install class is. Andy (...) -- See my Visual Interface for (...) (25 years ago, 23-May-01, to lugnet.robotics.rcx.java)
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| | LVI install problems
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Given that I'm new to Java this is probably a silly question, but when I try to install LVI I get the error: C:\Steve\Lego\lejos\lvi>java install Exception in thread "main" java.lang.NoClassDefFoundError: install Java2 and LeJOS seem to be working (...) (25 years ago, 23-May-01, to lugnet.robotics.rcx.java)
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| | Re: Wishlist leJOS
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(...) You could use the JavaComm package, look on the Java website for it. It should not be that hard to set up the port, write to it, and then get replies back. Look at the other Java projects mentioned on (URL) to see how communication is done. I (...) (25 years ago, 23-May-01, to lugnet.robotics.rcx.java)
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| | Re: Wishlist leJOS
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I (another newbie) also would like to upload data from the RCX to a Windows PC. It looks like adding the data to a StringBuffer would be a good way to save it, but I have not much of a clue about how to write (1) the Java that runs on the PC to (...) (25 years ago, 23-May-01, to lugnet.robotics.rcx.java)
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| | Re: Wishlist leJOS
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(...) I didn't think of that, but it might explain why my attemps to use the OP cods failed (they hung the RCX completely dead). Then again, I might have used them wrong... Björn (25 years ago, 22-May-01, to lugnet.robotics.rcx.java)
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| | Re: Wishlist leJOS
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(...) There still could be some special rom code that is called when the opcode is called for the standard firmware. Not very likely, but still possible. Andy -- See my Visual Interface for leJOS at (URL) (25 years ago, 22-May-01, to lugnet.robotics.rcx.java)
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| | Re: Wishlist leJOS
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(...) Remember that Lejos is replacement firmware, the OP codes no longer exist as they are part of the standard firmware. Regards Gordon (25 years ago, 22-May-01, to lugnet.robotics.rcx.java)
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| | Re: Wishlist leJOS
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(...) I think that the datalogging area is just a special limited firmware array, but , IIRC, since it mentions nowhere that you have to remember to keep the datalog size into account. Try using the opcodes, and see what works. Andy -- See my Visual (...) (25 years ago, 21-May-01, to lugnet.robotics.rcx.java)
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| | Re: Wishlist leJOS
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(...) It does answer my question, but I was thinking that a feature like that would be more memory efficient. It seems to me (knowing very little of programmimg small devices) that there are special OP codes (looking at Keokea Proudfoot's RCX (...) (25 years ago, 21-May-01, to lugnet.robotics.rcx.java)
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| | Re: Wishlist leJOS
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There's no need to implement this because Java allows you to create an array and store as much data as you want in it. You have a lot more power by using an array over the NQC feature, which I believe is limited to something like 100 numbers. Hope (...) (25 years ago, 21-May-01, to lugnet.robotics.rcx.java)
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| | Re: Problem with Lejos 1.0.0Beta3
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Are you sure the port you IR tower is connected to is really com2? You might try connecting to com1, and then just use lejosfirndl . For me, this works - it tries com1, and then downloads. (...) (25 years ago, 17-May-01, to lugnet.robotics.rcx.java)
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| | Re: Data-transfering RCX -> PC in LeJOS
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I hope you can solve your problem; I would be very interested in finding out how you did it. I also would like to upload large chunks of data from the RCX to calibrate the light sensor for example. (...) (25 years ago, 11-May-01, to lugnet.robotics.rcx.java)
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| | Problem with Lejos 1.0.0Beta3
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C:\>lejosfirmdl --tty=com2 Use --help for options. file://f/work/lejos/...josfirmdl: bad ir link what does this error mean? I did everything to work lejos, but I got that error all the time. There's nothing wrong with serial connection, nor tower (...) (25 years ago, 10-May-01, to lugnet.robotics.rcx.java)
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| | Data-transfering RCX -> PC in LeJOS
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I'm trying to transfer some log-data from the RCX to the PC, using the "Serial.sendPacket(byte[] aBuffer, int aOffset, int aLen)", but it does not seem to work with a packet-length bigger than approx.. 24 bytes. The packet is constructed as a (...) (25 years ago, 18-Apr-01, to lugnet.robotics.rcx.java)
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| | Wishlist leJOS
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Hi! I'm a leJos newbie, but at a glance, I miss the logging functions that I think NQC has, the ability to store numbers in the RCX for later upload. Is ther a chance that it will be implemented ? At least I would appreciate it Björn Lundin (25 years ago, 13-Apr-01, to lugnet.robotics.rcx.java)
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| | Re: Lejos Rerun
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(...) Isn't the memory battery backed? I had intended to get it to shut down before the batteries go completely flat for this reason. I can then swap battery packs(I am using external sealed lead acid batteries and the internal batteries back this (...) (25 years ago, 5-Apr-01, to lugnet.robotics.rcx.java)
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| | Re: Lejos Rerun
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(...) If the batteries are flat, then nothing would be remembered anyway, right? :) I guess that you could upload data to the PC, and then download it again when the 'bot needs it. The PC could also do some processing on the data to make the RCX's (...) (25 years ago, 30-Mar-01, to lugnet.robotics.rcx.java)
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| | Lejos Rerun
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Hi All, I am working in Lejos, which I've found to be a great environment to get working (on Windows 98) and to work in, and have a problem. In earlier versions of Lejos(at least according to the docs), and Tinyvm, objects persisted across runs. I (...) (25 years ago, 30-Mar-01, to lugnet.robotics.rcx.java)
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