> It seems to me that if the FIFO handler have a lot of things to do
> will result in a segmentation fault of the user program (which
> write to the FIFO and result in the running of the rtl FIFO
> handler). I used some for loops witin the handler, the user
> program works fine. But If I put some rtl_printf within
> those for loops, the user program ends up with a segmentation fault.
> When doing some more calculations instead of rtl_printf, the user
> program ends up with the same segmentaion fault. My RTL thread
> runs at 1khz rate. And my user program runs at 20Hz. Does these
> frequencies explain the reason?
What's the RTLinux version?
>
> As my user program was choked with a segmentatin fault, and left the
> file (/dev/rtf12) descripter associated with the FIFO open,
> without closing it. When I try to re-run the user program,
> the device was busy, ...I
> did not know how to solve this problem but deleted the /dev/rtf12 by
> a mistake. Is there anybody there able to tell me how could I
> recover /dev/rtf12 with crw-r--r-- mode?
mknod /dev/rtf12 c 150 12
chmod 644 /dev/rtf12
Michael.
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