Thomas Eschenbacher writes:
> is there any simple way to access an RT device driver from user
> space?
Sure. Add a wrapper to communicate through FIFOs to user space and the
rt_com API in kernel space :-)
> My problem is that we have a C library that has to access a serial ports
> /dev/ttyS0 through the "rt_com" driver.
>
> I use rtlinux-2.2, kernel-2.2.14/i386 and the rt_com-0.4. The kernel,
> modules and examples work fine, even the examples in rt_com do work
> (open the port, send bytes etc.). The device driver uses char-major-60
> and the serial driver of the linux kernel is removed.
> I did "rm /dev/ttyS0" and "mknod /dev/ttyS0 c 60 0".
Do you have rt_fifos.o loaded ?
Do you have a handler to do the communication ?
Jochen
--
Heinrich-Heine-Universität
Institut für Physikalische Chemie I
Jochen Küpper
Universitätsstr. 1, Geb. 26.43 Raum 02.29
40225 Düsseldorf, Germany
phone ++49-211-8113681, fax ++49-211-8115195
http://www.Jochen-Kuepper.de
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