Hello, In this case, which is a nice library for HMI to use with real-time software?
I am not working right now with this at the moment, but I intend to work with it soon. And, probably, I will face similar issues. Best Regards, Flavio Flavio de Castro Alves Filho [email protected] Tel.: + 55 11 8494 5676 Embedded Software Services www.phiinnovations.com Escritórios: São Paulo Campinas -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Wolfgang Denk Sent: quarta-feira, 23 de setembro de 2009 14:53 To: Felipe Castro Cc: [email protected] Subject: Re: [Xenomai-help] Realtime data processing + VGA display Dear Felipe Castro, In message <[email protected]> you wrote: > > I need some suggestion about how to deal with QT library, or another and > xenomai real time path. > What I'm working on, is a real time data processing and i need to show the > results in a VGA display. > > I have my data processing routine running in real time kernel with a high > priority task, and now after 5ms i need to refresh all data in display. What makes you think so? A refresh every 5 milliseconds means 200 frames per second. No human eye is fast enough to see that. Even if you relax your timings by a factor of 10 (!) you get 20 frames per second, which is faster than you can actually see. > I don't know how to handle it to get my realtime response shown in display > in a realtime too ... You don't need that, and you don't want that. Instead, you want to split your design into a real-time part that does the data acqui- sition and processing, and a non-realtime part that does the visualization. There are few excations, like when you must control alarm signals; but in this case you normally want to have hardware support for that, i. e. separate alram lights, beepers etc. > I did some tests using a simple QT software but it appears to refresh to > slow. Is it possible to do ? another question is , is there another library > to handle VGA display tha you suggest me ? There are many options for the GUI, but you should not attempt to select these for their real-time capabilities. If you need a RT-capable graphics environment, you can be pretty sure that your system is misdesigned. Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: [email protected] C++ was an interesting and valuable experiment, but we've learned its lessons and it's time to move on. - Peter Curran in <[email protected]> _______________________________________________ Xenomai-help mailing list [email protected] https://mail.gna.org/listinfo/xenomai-help No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.409 / Virus Database: 270.13.112/2394 - Release Date: 09/25/09 05:51:00 _______________________________________________ Xenomai-help mailing list [email protected] https://mail.gna.org/listinfo/xenomai-help
