Johan Borkhuis wrote: > I am trying to use semaphores inside my driver. It is a driver that can > be used as standard Linux driver and RTDM driver. > > However, when I use rt_sem_p or rtdm_sem_timeddown in my read_nrt > function I get a -1 return value, indicating EPERM.
Your read_nrt function is only for non real-time tasks. So if you use a call to a service which requires primary execution mode of Xenomai it consequentially fails. > When I look at the > thread state I see a value of 0x00400080, which indicates a standard > Linux thread. The rtdm-context is 0x00000001. > The userspace thread has a thread state of 00300380. > > What am I doing wrong here? How can I get a semaphore or other sync > mechanism to work inside my RTDM driver? Use RTDM services inside the *_rt functions and plain Linux services inside the *_nrt functions of your driver. -- Sebastian _______________________________________________ Xenomai-help mailing list [email protected] https://mail.gna.org/listinfo/xenomai-help
