 | | Re: Using the rotation sensor as velocity sensor
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Checked in to CVS. Thank you again, Jochen. By the way, for those of you who may want to check it out, I've disabled it by default in boot/config.h (as we probably should with rotation sensors) so you'll have to go in there and uncomment it (...) (26 years ago, 8-Sep-00, to lugnet.robotics.rcx.legos)
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| | c++ classes
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Dear legOSers, I have written a set of c++ classes for manipulating sensors and motors within legOS. The classes include: A) Sensor, a base class for accessing sensors B) LightSensor, derived from Sensor, but uses the LIGHT function to get values C) (...) (26 years ago, 8-Sep-00, to lugnet.robotics.rcx.legos)
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| | Re: Using the rotation sensor as velocity sensor
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Looks solid to me, and I appreciate the effort to isolate all the code with #defines- hopefully, most future feature additions will be similarly controlled. If no one objects, I'm going to check this into CVS this afternoon. Thanks a lot, Jochen... (...) (26 years ago, 8-Sep-00, to lugnet.robotics.rcx.legos)
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| | Using the rotation sensor as velocity sensor
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Hello, For my own project I need to measure the velocity at which my robot is moving. I finally patched the legOS kernel to get accurate values. I think that others may profit from a good velocity sensor. The velocity is given in rotation ticks (...) (26 years ago, 8-Sep-00, to lugnet.robotics.rcx.legos)
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| | Re: IRPD sensors and LegOS (long)
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Well, I worked on it a bit and added two routines: TurnTo(int New_Direction) => Figures the quickest way to turn from the current Direction to the new one. Retrace(int N) => Retraces the last N number of legs of it's journey. Change the #define LEGS (...) (26 years ago, 30-Aug-00, to lugnet.robotics.rcx.legos)
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| | Re: IRPD sensors and LegOS (long)
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Since IRPD doesn't use the upper half of the sensor range (above 512), it looks like it could easily be multiplexed with a touch sensor. Has anyone tried this? (I would try it myself, but I haven't bought an IRPD [yet!].) (...) -- ___...___ $50,000 (...) (26 years ago, 30-Aug-00, to lugnet.robotics.rcx.legos)
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| | IRPD sensors and LegOS (long)
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Well, after much frustration and a great deal of help from the very wise Rossz, I was finally able to get up and running w/ DJGPP and LegOS 0.2.4 The first thing I did was write a program to use with Pete Sevcik's IRPD proximity detectors that he (...) (26 years ago, 30-Aug-00, to lugnet.robotics.rcx.legos)
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| | Re: Linking failure when 'making' an lx file
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(...) Sorry about the extra stuff, the linking problem was due to the compiler trying to find the above link "___ucmpsi2". When I used h8300-hitachi-hms-nm I could see all the methods and links in my code, and this was the only strange looking one. (...) (26 years ago, 28-Aug-00, to lugnet.robotics.rcx.legos)
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| | Linking failure when 'making' an lx file
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Hi Can anyone tell me why I'm getting a linking failure when trying to compile my C code, in the standard way. The linker is failing to find a fucntion I have defined in my source: /usr/local/crossgcc/...chi-hms-ld -T ../boot/legOS.lds -relax (...) (26 years ago, 28-Aug-00, to lugnet.robotics.rcx.legos)
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| | Re: Blockin LNP calls
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(...) I guess I'm using lnp_logical_write then? That is, I include the standard lib_lnp.h file into my code and then link my app with liblnp.so.....does this answer your question? Is there a way in which I can call lnp_logical_write directly to test (...) (26 years ago, 28-Aug-00, to lugnet.robotics.rcx.legos)
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| | Re: Blockin LNP calls
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(...) No, I meant lnp_logical_write, which is called from lnp_addressing_write. lnp_logical_write is not within the file lnp.c, which I guess you link into your app. This function is supposed to actually write to the serial device communicating with (...) (26 years ago, 28-Aug-00, to lugnet.robotics.rcx.legos)
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| | Re: Blockin LNP calls
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(...) Sorry, I was using an unsigned char variable, this was just a remnant of some testing I did..... I tried a lot of variations ;-) (...) (26 years ago, 28-Aug-00, to lugnet.robotics.rcx.legos)
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| | Re: Blockin LNP calls
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(...) Yes, the problem is on the host PC (running Red Hat 6.2). What I cant figure out is how identical code works fine if I instantiate the wrapper class in a simple demo app, but once I try calling it form within my CORBA server, it blocks on (...) (26 years ago, 28-Aug-00, to lugnet.robotics.rcx.legos)
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| | Re: Blockin LNP calls
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(...) From the statement "data is received by the RCX" I assume you have this problem on the host system. What OS are you using? Also, how does your lnp_logical_write() routine look like? Eddie C. Dost ecd@skynet.be (26 years ago, 27-Aug-00, to lugnet.robotics.rcx.legos)
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| | Re: Blockin LNP calls
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(...) ,testaddress, 8); It shouldn't be the real problem, but are you sure about the port paramenter? How about: result = lnp_addressing_write...estbuffer, testlen ,testaddress, testport); Bye, Paolo. --- Maier's Law: If the facts do not conform to (...) (26 years ago, 27-Aug-00, to lugnet.robotics.rcx.legos)
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| | Re: Blockin LNP calls
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HELP! I'll ellaborate a little on the details of my previous posting: My code (removing some CORBA detail) looks like this: I have a class "nanOrbDemo_i" which has the following constructor: inline nanOrbDemo_i(){ if ( lnp_init(0,0,0,0,0) ){ cout << (...) (26 years ago, 27-Aug-00, to lugnet.robotics.rcx.legos)
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| | Re: Statically and Dynamically linking lnp ....
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(...) Colin, The "standard" for doing this is to wrap the extern "C" { and } in #ifdef __cplusplus clauses. You can see how to do this in most .h files in the include directory. Especially if it's a .h that may be used in mixed (C/C++) projects. (...) (26 years ago, 27-Aug-00, to lugnet.robotics.rcx.legos)
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| | Blockin LNP calls
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Hi Can anyone tell me why a call to lnp_addressing_write(...) might block? My environment seems okay. I have some simple clients written that have no difficulty in communicating wth the RCX, but I have one client ( a lot more complex) which seems to (...) (26 years ago, 26-Aug-00, to lugnet.robotics.rcx.legos)
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| | Re: Statically and Dynamically linking lnp ....
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Regarding the previous posting: Please disregard ... I figured it out, but thought it may be useful to post a reply to myself, in case it's ever of use to anyone else using the same tools: I forgot to wrap my include in an ' extern "C" ' block. As I (...) (26 years ago, 26-Aug-00, to lugnet.robotics.rcx.legos)
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| | Statically and Dynamically linking lnp ....
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Hi All, I was wondering if someone could give me a quick guide as to the compilation/linking options when using liblnp.h etc. I'm having a few difficulties. I wanted to know how exactly to link in the shared library. I tried installing it in the (...) (26 years ago, 26-Aug-00, to lugnet.robotics.rcx.legos)
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