Hi Philippe. I was wondering if there are any plans to provide an option to Xenomai to allow the use of interrupt priorities. I mean, by having the timer source as the most prioritary interrupt so that the scheduler could preempt the interrupt.
Let me explain why such option would be good. When I was testing my framegrabber driver, I had to reboot my PC about 10 times until I could identificate what was causing total freeze of the system. The problem was on the interrupt handler. One of the problems was that I was not clearing the interrupt events correctly so that the handler was in loop. The other problem was a crash inside the interrupt due to something like: uint64_t timestamp=rtdm_clock_read(); b.timestamp = *((struct timeval *) timestamp); Where it should be b.timestamp = *((struct timeval *) ×tamp); I forgot the '&' char. If it was possible to preempt the interrupt, by a task of greater priority, I could write a watchdog that would disable the interrupt in case the system stops responding. Do you think it would worth providing such option to Xenomai, at least as a debug feature? Best Regards, Rodrigo. P.S: BTW, I think my driver is usable now, so that you (or someone else) could cite it in some article or documentation. When I finish my master thesis (my deadline is the end of June ), I think I'll have time to comment it better and to remove the Data Translation specific code so that it can me made available as a template for real-time video interfaces. Or maybe you could convince Data Translation to allow me to show all the code! ;) _______________________________________________________ Yahoo! Acesso Grátis - Internet rápida e grátis. Instale o discador agora! http://br.acesso.yahoo.com _______________________________________________ Xenomai-core mailing list Xenomaifirstname.lastname@example.org https://mail.gna.org/listinfo/xenomai-core