Date: Tue, 8 Mar 2005 14:04:39 -0800 From: Jerry Toung <jtoung@arc.nasa.gov> To: hackers <freebsd-hackers@freebsd.org> Subject: send data to serial port from kernel code Message-ID: <200503081404.39320.jtoung@arc.nasa.gov>
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Good afternoon list,
I am looking for a way to write data to the serial interface (/dev/cuaa0) from
a kernel module and also read /dev/ttyd0 still from that same kernel module.
Any pointers to doing that will be great.
I want on exchange IP traffic from FreeBSD to another host with different OS
via serial cable (null modem). So instead of making a call the NIC driver, I
want to use the serial port as may physical layer.
Any other ideas for doing this is welcome as well.
I know the basics of serial programming from a regular C application:
#include <termios.h>
fd = open("/dev/cuaa0", O_RDWR|O_NDELAY)
tcsetattr and tcgetattr
etc etc.
but that's not what I am looking for.
Thank you.
Jerry
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