#!/bin/bash
set -e

usage () { echo 'usage: write-firmware FILE [PORT]'; }

home=/home/reprap/play
ourfile="$home/Marlin.hex"

infile="$1"

case $# in
1)   shift; port=/dev/ttyUSB0 ;;
2)   shift; port="$1"; shift ;;
*)   usage >&2; exit 1;;
esac

ad () {
   avrdude -b 38400 -v -P $port -p atmega644P -c arduino "$@"
}

cp -v -- "$infile" "$ourfile"

ad "$@"
ad "$@" -U flash:w:$ourfile