#!/bin/bash

stty -echo
dmesg -n 1

function chksum (){
	echo -n "$1" | md5sum | awk '{print $1}'
}

function tx_data (){
	File="$1"
	
	if [ ! -f $File ] ; then
		echo "File $File not found."
	fi
	
	md5sum $File | awk '{print $1}'

	cat $File | base64 | while read -r x ; do
		Sum=$(chksum "$x")

		while true ; do
			# Send the data
			echo "$x:$Sum"

			read X < /dev/ttyS0
			X=$(echo "$X" | tr -d '\n')
			if [[ "$X" == "$1" ]] ; then
				break
			elif [[ "$X" == "quit" ]] ; then
				exit
			fi
		done
	done
	
	echo "EOF"
}

tx_data $@