 | | Re: LNP-problem...
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Why don't you post the code you're using. Then we can tell you if it's a problem with the program. Steve ----- Original Message ----- From: Tom Wouters <aqua@no__spam.ulyssis.org> Date: Wed, 20 Nov 2002 17:21:47 GMT To: (...) (22 years ago, 20-Nov-02, to lugnet.robotics.rcx.legos)
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| | LNP-problem...
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hi there we seem to have a not so tiny problem with lnp, we can send messages from the tower to the rcx, but until now we have failed to get the rcx to send a message tot the computer, we have tried various versions of the legos kernel, none of them (...) (22 years ago, 20-Nov-02, to lugnet.robotics.rcx.legos)
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| | Re: BrickOS & Cygwin
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(...) You bet. I've fixed this in CVS so it will be in our next test release. Thanks for reporting it. (This is why we do test releases ;-) Regards, Stephen -- Stephen M. Moraco stephen@debian.org (22 years ago, 19-Nov-02, to lugnet.robotics.rcx.legos)
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| | BrickOS & Cygwin
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I've downloaded and installed test release 09. Once again things worked very well. But there is one definite problem with this release (as well as 08) when running under Cygwin. In Makefile.Common the lines ifdef BUILDING_HOST_UTILS # ---...--- # (...) (22 years ago, 19-Nov-02, to lugnet.robotics.rcx.legos)
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| | Re: Motor Control Register (0xf000)
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(...) As it is, it seems[1] that two of the three NAND gates in the 74HC10 are being used as a driver for speaker output (it's odd that it's two, not one though). So, this leaves one three input NAND gate to do the decoding. Now that I think about (...) (22 years ago, 14-Nov-02, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | Re: Motor Control Register (0xf000)
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<snip> (...) Ok, thank you for the explaination! I am thinking that the Memory Manager would need some rework to support this, since the start of memory is currently established at compile time. I will have to take a look at this (time allowing). (...) (22 years ago, 14-Nov-02, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | Re: Motor Control Register (0xf000)
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(...) I have implemented what Mark Riley has suggested. I submitted a patch to the patches section at the sourceforge project page. The changes are quite small but require some tricky tweaks to the build process. I have only minimally tested it and (...) (22 years ago, 14-Nov-02, to lugnet.robotics.rcx.legos)
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| | Re: Motor Control Register (0xf000)
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(...) While you are at it you could also make a remark near the explanation of the f000 motor control register, and make it clear that this is a hardware function. When I started to use this extra memory in leJOS I missed the remark at the very end (...) (22 years ago, 14-Nov-02, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | Re: Motor Control Register (0xf000)
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(...) In that case, why didn't the RCX designers use an 8 input NAND to decode their addresses, to leave more of the RAM usable? Maybe there werent aware of this possibility? Jürgen (22 years ago, 14-Nov-02, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | Re: Motor Control Register (0xf000)
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It also turns out that there are 8 bytes of external RAM that peek through at addresses 0xff80-0xff87. Writes to these locations also affect the motor control register. I suppose there's a small advantage in using these registers to control the (...) (22 years ago, 14-Nov-02, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | Re: Motor Control Register (0xf000)
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(...) This is interesting. It makes sense that the memory backing these locations still works, but I never would have thought to try to use it. I will make a note of this on my pages. -Kekoa (22 years ago, 13-Nov-02, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | Re: Motor Control Register (0xf000)
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(...) Interesting, I never looked at that version. I think the one disassembled by Kekoa is 0309. Current versions of leJOS also use this upper memory to store part of its firmware (almost 3K). Jürgen (22 years ago, 13-Nov-02, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | Re: Motor Control Register (0xf000)
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Joe, [some reordering of comments for clarity] (...) The idea is to pick a certain number of functions that will fit in the upper RAM space (~2900 bytes) and put these functions in a seperate linker section (other than the default ".text" section). (...) (22 years ago, 13-Nov-02, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | Re: Motor Control Register (0xf000)
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Mark, This is very interesting. I have experienced strange motor behavior with programs on BrickOS before; I now wonder if this may have been the situation. I do not currently know enough about GCC to make the changes that you mentioned, but I am (...) (22 years ago, 13-Nov-02, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | Motor Control Register (0xf000)
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Seeing as how there's been little traffic here recently, I thought I'd post about something I found that's cleared up a little mystery (for me at least). It concerns the RCX register that is used to control the motors. This register lives at 0xf000. (...) (22 years ago, 13-Nov-02, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | Re: download speed
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(...) Daniel, Much more than the 600 byte class gets downloaded. If you do lejos myclass -o myclass.bin, and look at the size of myclass.bin, you will see the true size of the download. If you have a serial rather than usb tower, then you can use (...) (22 years ago, 11-Nov-02, to lugnet.robotics.rcx.java)
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| | download speed
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hi first, i would like to congratulate the Lejos team. When i bought Mindstorms, didn't imagine i was going to use it with my favorite programming language! I noticed that Lejos (2.0.0) is very slow to download programs or firmware to the rcx, (...) (22 years ago, 11-Nov-02, to lugnet.robotics.rcx.java)
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| | 'Cyber Sorter' a live (was B.Sc in LEGO)
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Hi everybody, A few monthes ago I announced that I'm making my final project for my B.Sc in electronics from LEGO mindstorms bricks. First of all I'd to say thanks for those who offered help and a name for my robot. The chosen name was 'Cyber (...) (22 years ago, 9-Nov-02, to lugnet.robotics, lugnet.robotics.rcx)
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| | Re: RIS 1.0 -> 1.5 -> 2.0 upgrade questions
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all it supplies is the new software, no USB tower....otherwise I would have gotten one long ago..... Timothy (...) (22 years ago, 6-Nov-02, to lugnet.robotics.rcx)
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| | Re: RIS 1.0 -> 1.5 -> 2.0 upgrade questions
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(...) Does the upgrade kit come with the USB tower, or just a CD-ROM? (...) Will the new RIS software support the IR tower or only a USB one? (22 years ago, 5-Nov-02, to lugnet.robotics.rcx)
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