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/
