 | | setjmp/longjmp for brickOS
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Hi all, I am currently attending to a lecture in real time system on my university and we were assigned the homework to do exception handling in C on the RCX using setjmp and longjmp. Of course those are not available in brickOS so that task (...) (22 years ago, 13-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: BrickOS Threading...
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(...) <snip> (...) Steve, Yes, infact I had tested a couple different applications with the motor controller being called every 1 ms and the same ones with a 2 ms interval. I didn't see a difference with those applications, but did recognize the (...) (22 years ago, 13-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: BrickOS Threading...
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(...) ... (...) This change seem to improve things. Can I change it back to the way it was before? Thanks Steve (22 years ago, 13-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: sys_time (long post)
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Mark, Excellent Post ! Ok, I will admit it; I was the one that put the sys_time handler on the NMI. 8-) I guess I will want to think about this a bit; but I see that you have done a good bit of that yourself. ... Could the 'Get' function do the (...) (22 years ago, 12-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: Win98 cygwin USB installation
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Hi Collin, This post by John Hansen fixed things for me: (URL) Spencer" <cspencer@andrew.cmu.edu> wrote in message news:H71CzB.Ipu@lugnet.com... (...) USB (...) them or (...) to (...) the (...) the (...) USB (...) that (...) the (...) (22 years ago, 13-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: Win98 cygwin USB installation
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Ok, I think I figured it out...I don't completely understand the logistics of makefiles, but I changed the following line in Makefile.common: Before: CFLAGS = -O2 -Wall After: CFLAGS += -O2 -Wall I suspect that a later assignment to CFLAGS was (...) (22 years ago, 13-Dec-02, to lugnet.robotics.rcx.legos)
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| | Win98 cygwin USB installation
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Hello, I recently bought the LEGO mindstorms Invention System kit and I am trying to get brickOS v0.2.6 working on my PC (Win98). I also have the USB tower. So far, I have found 4 bugs in the current script. I was able to fix 3 them or work around (...) (22 years ago, 13-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: BrickOS Threading...
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The motor handler is only called once ever 2ms in the latest version of BrickOS (as opposed to every 1ms in earlier versions). This is a fairly recent change and it could be causing a "granularity" type problem with certain speed settings in your (...) (22 years ago, 12-Dec-02, to lugnet.robotics.rcx.legos)
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| | BrickOS Threading...
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I'm having a problem, and I hope someone can help me. I've been running winLegOS, and I've switched to the latest version of BrickOS. I created a way to control the motors, which will reliably speed them up, and slow them down by using different (...) (22 years ago, 12-Dec-02, to lugnet.robotics.rcx.legos)
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| | sys_time (long post)
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As I was poking around in the BrickOS kernel, it occurred to me that using the sys_time variable isn't entirely safe. Since sys_time is 32-bits and the processor can only read 16-bits at a time into a register, there is a period of time between the (...) (22 years ago, 12-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: Cygwin under Virtual PC on OS X
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(...) David, I was not sure how you tried to build the cross compiler but I know that Apple provides several gnu tools that work under Darwin. Darwin from my understanding is the underlying code for the Mac OS X (See FAQ at (URL) So one might be (...) (22 years ago, 12-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: Cygwin under Virtual PC on OS X
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Oops, Sorry if I accidentally gave anyone false hope, I ment to say: I have not found any cross compiler packages for LegOS or the Hitachi H8 that are buildable under OS X (but would love to find one). Anyone know of any? (...) (22 years ago, 12-Dec-02, to lugnet.robotics.rcx.legos)
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| | RE: Installation Help!
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Max, Aha! I did that and it got a lot further this time, but still failed. I'll have to wade through the log file to try and pinpoint where it went wrong as I don't want to post the whole 180k. Thanks for your help! Andy -----Original Message----- (...) (22 years ago, 10-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: Installation Help!
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(...) You need to install the Cygwin gcc package. You need the normal Cygwin gcc to build the Cygwin->H8300 cross-compiler gcc. Max. (22 years ago, 9-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: installation of cygwin and legos/brickos
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John, It looks as if you don't have the cross compiler or it is is not in a known directory. Try searching your entire hard drive for h8300. That might bring something up. You should have either tired to build the cross compiler or downloaded it (...) (22 years ago, 9-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: Installation Help!
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Thanks for the info! I checked and I do have grep installed. But I did not install anything other than was listed. I initially tried to install everything but the download died after a couple of hours on my T1 connection. Would some kind person with (...) (22 years ago, 9-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: Installation Help!
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(...) Hi Max, I got: $ gcc -v BASH: gcc: command not found but the command I am running to get all this output is the buildgcc.sh command to build gcc. Andy (22 years ago, 9-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: installation of cygwin and legos/brickos
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(...) Saw this problem before. You might check older mails in this newsgroup discussing that. Running brickOS under Linux I don't know much about the cygwin problems. But your makefile assumes that the c compiler can be run with the command "cc" (...) (22 years ago, 8-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: installation of cygwin and legos/brickos
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John, What version of legOS are you using? Looking at the code below it seems to indicate that you are using legOS ver 0.2.6 (unless in the newer versions of brickOS we forgot to change a directory name). I am also going to gues that you are using (...) (22 years ago, 8-Dec-02, to lugnet.robotics.rcx.legos)
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| | installation of cygwin and legos/brickos
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I have previously reported problems in installing cygwin and legos, and have tried again to get this up and running. I believe that cygwin is not properly installed and have included information here on all modules included and error messages when I (...) (22 years ago, 8-Dec-02, to lugnet.robotics.rcx.legos)
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