Date: Tue, 08 Mar 2005 17:26:05 -0500 From: Stephan Uphoff <ups@tree.com> To: jtoung@arc.nasa.gov Cc: hackers <freebsd-hackers@freebsd.org> Subject: Re: send data to serial port from kernel code Message-ID: <1110320765.29804.7607.camel@palm> In-Reply-To: <200503081404.39320.jtoung@arc.nasa.gov> References: <200503081404.39320.jtoung@arc.nasa.gov>
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On Tue, 2005-03-08 at 17:04, Jerry Toung wrote:
> 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
What is wrong with just using PPP ?
Stephan
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