#!/bin/bash


[ -z "$2" ] && echo "usage: $0 <dev> <rate> [<console-tty>]" && exit 1

TTY=$1
BAUD=$2
shift
shift

# Ensure some kind of mutial exclusion.
if lsof $TTY; then
	echo "$TTY in use"
	exit 1
fi

TARGET_TTY=$TTY,b$BAUD,raw,echo=0

# treat console end as a terminal. run this in an xterm or emacs
# terminal emulator.

CONSOLE_TTY=`tty`,raw,echo=0

# give the argument "-" to run without console special keys, i.e. in
# an emacs shell buffer.

[ -z "$1" ] || CONSOLE_TTY=$1

echo "Connecting $TARGET_TTY to $CONSOLE_TTY"
exec socat $TARGET_TTY $CONSOLE_TTY
echo Failed.