Re: Serial port over TCP/IP

[Rob van Nieuwkerk]

Michael Buesch wrote:
> Is it possible to make a char-dev (a serial device ttyS0)
> available via TCP/IP on a network like it is possible
> for block-devices like a harddisk via nbd?
> Is kernel-support for this present?
> If not, is it technically possible to develop such a driver?

Hi Michael,

No need for kernel support.  This simple shell-script is what I use for
a project at the moment.

	greetings,
	Rob van Nieuwkerk

------------------------------------------------
#!/bin/sh

TCP_PORT=4000
SERIAL_PORT=/dev/ttyS1
BAUDRATE=19200

while (true)
	do
	(stty $BAUDRATE -echo clocal raw pass8 ; exec nc -l -p $TCP_PORT) \
		< $SERIAL_PORT > $SERIAL_PORT
done
------------------------------------------------