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(...) Do you have a patch? (...) I'm writing a compiler (automaton model of the robot to C). With dynamic addresses, it could manage an "addresses pool", and simply add a call to change the address when the program starts... On the other hand, if (...) (23 years ago, 30-Dec-01, to lugnet.robotics.rcx.legos)
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| | Re: host address
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Eric, see the thread started by Zhengrong Zhang on 11/5/01 about this. short: we can't find any compelling reason to hardcode the address. I'm not sure about Zhengrong, but I've modified my copy of LegOS to support "dynamic" addresses (i.e. can (...) (23 years ago, 30-Dec-01, to lugnet.robotics.rcx.legos)
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| | Re: How to make shared memory....not
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Hi Steve, (...) Yes. Actually, I am working on a robot that finds a path trough a maze. After solving the maze, a second program can run through the maze with the informations from the first program. (I will do this with shared mem). Both programs (...) (23 years ago, 28-Dec-01, to lugnet.robotics.rcx.legos)
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| | LNPD: communication between clients
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It seems that when a client of lnpd sends data to the IR tower, these are not sent to the other clients connected to the daemon. Unfortunately, I really need this feature... So I tried to call "deliver_packet(tx_buffer, tx_end-tx_buffer);" in (...) (23 years ago, 28-Dec-01, to lugnet.robotics.rcx.legos)
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| | Re: How to make shared memory....not
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(...) Yes, I'm sure I can. And I think it would be 'safer' that way. But Mike's idea about functions sounds interesting. I don't really have any idea about how I would use that in a real program, but it sure sounds interesting. Steve (23 years ago, 27-Dec-01, to lugnet.robotics.rcx.legos)
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| | Re: How to make shared memory....not
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I think this is what you want, but I am still learning. :) int inc (int&); int dec (int&); int (*pFunc) (int); //pointer to a function that accepts/returns an int if (add) { pFunc = inc; } else { pFunc = dec; } int a = pFunc(10); So, if add is true, (...) (23 years ago, 27-Dec-01, to lugnet.robotics.rcx.legos)
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| | Re: How to make shared memory....not
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(...) ooohh. I like that idea. So I can write one program with all my functions and my other programs can just include a couple function calls. Again, in my VB world, I don't mess with pointers. When you have a minute, can you type up a sample (...) (23 years ago, 27-Dec-01, to lugnet.robotics.rcx.legos)
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| | Re: How to make shared memory....not
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(...) Yes. That is the only thing you have to do. You can store whatever you want. (...) Exactly. If you know you what you do, nothing bad can happen. BTW., this scheme can be extended to something like a shared library. If you store pointers to (...) (23 years ago, 27-Dec-01, to lugnet.robotics.rcx.legos)
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| | Re: How to make shared memory....not
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(...) Thanks, Michael. This appears to be exactly what I'm looking for. I assume if I want to store more values, I can just change the 'shared' struct, right? (add l, m, n...) When you say 'multitasking problems', you're talking about storing & (...) (23 years ago, 27-Dec-01, to lugnet.robotics.rcx.legos)
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| | How to make shared memory....not
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(...) You ask for it, you get it. BUT: It works, sort of. It will not survive any multitasking problems. Shared memory has to be handled by the OS, not by a user program. I split your problem to 3 programs. Program 1 allocates the memory and prints (...) (23 years ago, 22-Dec-01, to lugnet.robotics.rcx.legos)
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| | Re: USB, Windows, legOS
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I tried the patch and still get the error "Error 6 GetCommState". Anyone know what this error means and what I can do to correct it? I would really like to get legOS running. (...) (23 years ago, 21-Dec-01, to lugnet.robotics.rcx.legos)
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| | Re: Storing Data
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(...) It was suggested by some of my 'c++' co-workers that this was the case (shared memory was available). However, I don't deal with that in my Visual Basic world. They also suggested there were 'unused' memory blocks in LegOS where data could be (...) (23 years ago, 21-Dec-01, to lugnet.robotics.rcx.legos)
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| | Re: Storing Data
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(...) As there is no memory management, any memory not on the stack is by definition shared between any threads. Concurrency control is up to you however. John A. Tamplin jat@jaet.org 770/436-5387 HOME 4116 Manson Ave 770/431-9459 FAX Smyrna, GA (...) (23 years ago, 21-Dec-01, to lugnet.robotics.rcx.legos)
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| | Re: Storing Data
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(...) What you request is shared memory and shared memory is not a part of legOS. My way to simulate shared mem is to put the two (or more) tasks into one legOS program. Each task is started as a thread by an execi() call, triggered by the user via (...) (23 years ago, 21-Dec-01, to lugnet.robotics.rcx.legos)
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| | LNP: host address
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Is there a reason to "hardcode" the host address using a define (LNP_HOSTADDR)? Things would be easier for me if I could change the address at run time (when calling lnp_init). Is it safe to replace the defines by a variable? Eric (23 years ago, 21-Dec-01, to lugnet.robotics.rcx.legos)
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| | Proximity
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Next question: Does any one have a proximity routne (code) I can review (steal) using LegOS, a light sensor, and the IR port? I've used the NQC stuff, but now I've moved up to LegOS. I haven't been able to find the right commands for the IR port. (...) (23 years ago, 20-Dec-01, to lugnet.robotics.rcx.legos)
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| | Storing Data
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When using LegOS (a most excellent creation, btw) is it possible to store a value and use it in different programs? Actually, I'm sure it is, but how would someone do it? I want to have one program to configure my light sensor, and use those values (...) (23 years ago, 20-Dec-01, to lugnet.robotics.rcx.legos)
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| | Re: Serial Port (IR Tower) communication procedures with LegOs
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If you mean standard firmware message, I think you should use my remote control patch for legOS025, you can find them at (URL) luck! Zhengrong (...) (23 years ago, 19-Dec-01, to lugnet.robotics, lugnet.robotics.rcx.legos)
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| | Re: How to get interval of time
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(...) correct? Yep, that's how I do it & it seems to work. ROSCO (23 years ago, 18-Dec-01, to lugnet.robotics.rcx.legos)
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| | How to get interval of time
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In NQC, I can use ClearTimer(0) and Timer(0) to get interval of time, how can I do it in legOS? I used t1 = sys_time, then t2 = sys_time, so interval = t2 - t1, is it correct? Zhengrong (23 years ago, 18-Dec-01, to lugnet.robotics.rcx.legos)
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