Many thanks for your suggestion, I have checked the references You gave me and I believe that RTAI would be a good solution to solve our problem. Actually I'm working with a quite old version of HardHat package (CDK 1.2 with 2.4.0-test2 kernel) with some minor patches in order to have the ethernet 100% functionality, do You think we can easily port the RTAI on this version or shall we migrate to HardHat 2.0?
Gianfranco ----- Original Message ----- From: "Wolfgang Denk" <[EMAIL PROTECTED]> To: "Ing.Gianfranco Morandi" <gianfranco.morandi at euro-studio.it> Cc: "LinuxPPC" <linuxppc-embedded at lists.linuxppc.org> Sent: Monday, September 09, 2002 9:36 PM Subject: Re: 8260 MCC Interrupt priority > Dear Gianfranco, > > in message <020c01c25820$89c23880$0700a8c0 at pc005> you wrote: > > > > I'm currently working on a custom board derived from EST8260. We are trying > > to implement a device driver of MCC to control the interface with a > > synchrounous PCM. > > I have noted that when there is an interrupt on SCC1 (or FCCx) the latency > > time of MCC interrupt increase. Now I'm really concerned about the > > possibility to loose some frame due to an heavy use of such interfaces. > > If losing a frame is _that_ critical to you yoy should consider using > RTAI. > > > Do anybody knows if there is the possibility to avoid such behaviour (maybe > > allowing an interrupt casting with the MCC ISR)? > > With RTAI you can register the MCC as a real-time interrupt which has > higher priority than all Linux stuff, guaranteed. > > See http://www.rtai.org/ , and feel free to contact me when you need > help. > > Wolfgang Denk > > -- > Software Engineering: Embedded and Realtime Systems, Embedded Linux > Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de > The software required `Windows 95 or better', so I installed Linux. ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
