#!/bin/sh
#
#       ser_cmd v0.1 - Robert Pectol - kk7av node 3515
#       Simple script for sending a, 'one-shot' command over
#       the serial port to an external device (controller).
#
############################################################

################################
#  USER CONFIGURABLE SETTINGS  #
################################

## The only required variables are, "baud_rate", "device",
## and, "command."  The contents of the, "command" variable
## are what get sent over the serial port.

# set baud rate
baud_rate="9600"

# set com port device
device="/dev/ttyS0"

# example - form the command string
curtime=`date +%I%M`
ampm=`date +%p`
if [ "$ampm" == "AM" ]; then
	ampm="0"
else
	ampm="1"
fi
command="058${curtime}${ampm}"

##############################
#  END USER CONFIG SETTINGS  #
##############################

###
############# NO MODS BELOW HERE #############
###

# set up the serial port parameters
stty -F $device ispeed $baud_rate ospeed $baud_rate -echo

# send the data and get the response back
exec 3<>$device
printf "$command\r" >&3
read response <&3
echo "$response"
exec 3>&-
exit 0