Stephane,
The move to RTLinux seems ideal for you, given the other concerns
you mentioned. A couple of points to mention:
1) the use of C math libraries at the kernel level requires
static linking of these libs with your application.
This has been addressed several times on this group and
the solution can be easily found on the mail archive list,
2) user I/O (screen / keyboard) are handled differently in RTL.
Essentially the Linux "OS" is run as a low priority task under
a small RT kernel. User I/O generally gets passed beween the
Linux (non real time) and RTL levels via fifos. The examples
in the distribution demo this well.
3) You may want to use the RTL box in a "host / target" configuration
with another PC running Linux and your user interface. There are
several advantages to this. They are discussed in a previous
posting you will find in the archive (submitted by C.Wright I think).
So far I have been very happy with RTLinux. Staying on this group
is an excellent (if not the best) way to get solutions to any problems.
Also, get the following books: "Linux kernel internals",
ISBN 0-201-33143-8, and "Linux device drivers", ISBN 1-56592-292-1.
good luck
Rich
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For more information on Real-Time Linux see:
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