Hello, Our application is written with some kind of super-loop scheduling : we have many drivers that call rt_event_signal (when data have been written to the hardware or new data are available to be processed) and 1 task that is calling rt_event_wait. After receiving an event, the superloop task is then reading/writing the data from/to the appropriate driver. Those calls to the drivers must never block (except to some locking to protect the consistency of data-structures) to garantuee the real-time behaviour of the application. Now we want to communicate with the Linux-domain and thought we have to use the Xenomai pipe-object for that purpose.
How can the superloop task in Xenomai receive an event from the pipe-object when data are available to be read/written (so without already reading the data)? The ideal solution would be if one can ask the pipe-driver to call a user-callback function when there is a change in the status (read/write) or an equivalent system to the EPOLL interface (from the uclinux domain). Best regards, Filip.
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