notification.sh: Simple script to blink LED and show an notification

.env

@@ -1,5 +1,11 @@
+# Serial device
 SERIAL_DEV="/dev/cu.usbserial-A700e0gN"
 #SERIAL_DEV="/dev/ttyUSB0"
+
+# Serial baud rate
 SERIAL_SPEED=9600
 #SERIAL_SPEED=19200
 #SERIAL_SPEED=115200
+
+# FIFO filename
+FIFO="/tmp/mapid"

fifo_bridge.py

@@ -7,7 +7,8 @@ import mapid
 from serial.serialutil import SerialException
 
 
-FIFO = "/tmp/mapid"
+mapid.load_dotenv()
+FIFO = return os.environ.get("FIFO")
 
 
 def main():

notification.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+
+source "$(dirname $0)/.env"
+
+
+#FIFO=/tmp/mapid
+LINE1='Backup finished!'
+LINE2=''
+LED_BLINK=".5s"
+DISPLAY_DURATION="4s"
+
+
+if [[ ! -e $FIFO ]]; then
+	echo "Error: $FIFO does not exist." >&2
+	exit 2
+fi
+
+
+echo >$FIFO "CLS"
+
+if [[ -n $LINE1 ]]; then
+        echo >$FIFO "LINE 1"
+        echo >$FIFO "ECHO $LINE1"
+fi
+
+if [[ -n $LINE2 ]]; then
+        echo >$FIFO "LINE 2"
+        echo >$FIFO "ECHO $LINE2"
+fi
+
+echo >$FIFO "LCDON"
+echo >$FIFO "ON"
+gsleep $LED_BLINK
+echo >$FIFO "OFF"
+gsleep $DISPLAY_DURATION
+echo >$FIFO "LCDOFF"