#!/bin/bash

TTY=/dev/ttyS1
stty -F $TTY -hupcl -opost -onlcr -isig -iexten -echo -echoe -echok -echoctl -echoke -icanon min 0 time 5

echo -n "RA: "
echo ":GR#" > /dev/ttyS1 && cat /dev/ttyS1
echo -n "Dec: "
echo ":GD#" > /dev/ttyS1 && cat /dev/ttyS1