Access COMEDI from LXRT

[Andreas Leuner]

> Hi,
>
> I'm presently trying to access my ME2600i A/D-card via COMEDI from an
> LXRT-Thread.
>
> When I try to read with comedi_data_read(...), I'm thrown out of the hard
> realtime. Do I have to use special functions? I always thought I could use
> identical COMEDI function calls in realtime and non-realtime environments.

- What header file does your program include? that of user space
libcomedi0 (i.e. comedilib.h) or that of libkcomedilxrt.a (i.e.
rtai_comedi.h)? The libcomedi0 library uses linux system calls,
libkcomedilxrt doesn't (lxrt calls into rtai_comedi module instead)

- did you load the rtai_comedi module prior to running your programm?

I hope this provides some insight. Otherwise please post back with more info.

Andreas Leuner