[Gambas-user] Did anybody try to run stepper motors through paralel port

[Zelimir Ikovic]

I wanted to know how predictable and reliable GAMBAS is when a reaction to real-world events is required. 

Let say that Java RealTimeSystem is intended only for suitable  operating systems, which means that only a 
real-time operating system, such as QNX, is appropriate for implementing the JVM.
So that means it depends on underlynig OS version ...
 
 Simply installing an RTS extension 
 and renaming java.lang.Thread instances to 
 javax.realtime.RealtimeThread will not turn the 
 application into a real-time app.
 
 I just wanted to know what is Gamas reaction to real world compared under different underlyng OS.
 FreeBSD, OpenBSD and Linux are not he same.
 

--- On Sun, 4/18/10, Les Hardy <les at ...2337...> wrote:

> From: Les Hardy <les at ...2337...>
> Subject: Re: [Gambas-user] Did anybody try to run stepper motors through paralel port
> To: "mailing list for gambas users" <gambas-user at lists.sourceforge.net>
> Received: Sunday, April 18, 2010, 12:27 PM
> Doriano Blengino wrote:
> > Les Hardy ha scritto:
> >   
> >> Zelimir Ikovic wrote:
> >>   
> >>     
> >>> I have VB6 program that run CNC plasma
> machine. It work very well and smooth under win200, but in
> WinXP machine motion is not good. 
> >>>
> >>> It doesnot help if I set REALTIME prority for
> the process ...
> >>>
> >>> How about Linux and Gambas? Daes it depent on
> version of Linux ...
> >>>
> >>> What is resolution for Gambas Timer? Can I
> wait 10 microsec do something wait 10 microsec and so on
> ...
> >>>
> >>> Regards
> >>>     
> >>>       
> > Uhm... under linux, no matter what version, you can
> use the parallel 
> > port and high resolution timers, but... 10 us? What is
> the speed of your 
> > motor(s)?
> > Anyway, I see it difficult to do it in gambas, mainly
> because of tight 
> > GUI integration and impossibility to use interrupts;
> the best way would 
> > be to separate hi-level logic from lo-level timing,
> perhaps through a 
> > library written in C.
> >
> >   
> Yes, I agree. I did a lot of work with parallel ports in
> the past, but I 
> would not attempt a serious application for that job in
> Gambas.
> 
> Since I retired, I have been building my own hobby CNC
> machines, but I 
> just use EMC2. It is GPL, and very efficient, so I figured
> I had no need 
> to write my own app.
> 
> Les Hardy
> 
> 
> 
> 
> 
> 
> ------------------------------------------------------------------------------
> Download Intel® Parallel Studio Eval
> Try the new software tools for yourself. Speed compiling,
> find bugs
> proactively, and fine-tune applications for parallel
> performance.
> See why Intel Parallel Studio got high marks during beta.
> http://p.sf.net/sfu/intel-sw-dev
> _______________________________________________
> Gambas-user mailing list
> Gambas-user at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/gambas-user
>