From e6aaffc886eb209e29614390e628e6914df98c63 Mon Sep 17 00:00:00 2001
From: Camil Staps <info@camilstaps.nl>
Date: Sat, 17 Jun 2017 14:39:22 +0000
Subject: [PATCH] Added shell script

---
 terminal.sh | 83 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100755 terminal.sh

diff --git a/terminal.sh b/terminal.sh
new file mode 100755
index 0000000..4b7efea
--- /dev/null
+++ b/terminal.sh
@@ -0,0 +1,83 @@
+#!/bin/bash
+PGM="$0"
+PORT="$1"
+CMD="$2"
+
+BAUD=115200
+
+chr () {
+	printf \\$(printf '%03o' $1)
+}
+
+led () {
+	LED="$1"
+	OPT="$2"
+
+	case "$LED" in
+		1|a|A) LED=0;;
+		2|b|B) LED=16;;
+		3|c|C) LED=32;;
+		4|d|D) LED=48;;
+		*)
+			echo "Unknown LED '$LED'"
+			echo "Usage: $PGM $PORT led [1aA2bB3cC4dD] {off|green|red|green+blink|red+blink}"
+			exit 1
+	esac
+
+	case "$OPT" in
+		off) OPT=0;;
+		green) OPT=1;;
+		red) OPT=2;;
+		green+blink) OPT=5;;
+		red+blink) OPT=6;;
+		*)
+			echo "Unknown option '$OPT'"
+			echo "Usage: $PGM $PORT led [1aA2bB3cC4dD] {off|green|red|green+blink|red+blink}"
+			exit 1
+	esac
+
+	OPT=$(($LED+$OPT))
+
+	(echo -ne '\x11'; chr $OPT) > "$PORT"
+}
+
+backlight () {
+	OPT="$1"
+
+	case "$OPT" in
+		off)
+			echo -ne '\x12\x00' > "$PORT"
+			;;
+		on)
+			echo -ne '\x12\x01' > "$PORT"
+			;;
+		flash)
+			echo -ne '\x12\x02' > "$PORT"
+			;;
+		*)
+			echo "Unknown option '$OPT'"
+			echo "Usage: $PGM $PORT $CMD {on|off|flash}"
+			exit 1
+	esac
+}
+
+write () {
+	echo -n "${@:1}" > "$PORT"
+}
+
+stty -F "$PORT" -crtscts -hupcl "$BAUD"
+
+case "$CMD" in
+	backlight|bl)
+		backlight "$3"
+		;;
+	led)
+		led "$3" "$4"
+		;;
+	write)
+		write "${@:3}"
+		;;
+	*)
+		echo "Usage: $PGM PORT {backlight|bl|led|write}"
+		exit 1
+esac
-- 
2.20.1