Update load

Author: Helio

load

@@ -3,15 +3,25 @@
 mac_address="$1"
 file="$2"
 
-if [[ "$mac_address" =~ ^([a-fA-F0-9]{2}:){5}[a-zA-Z0-9]{2}$ && -r $file && -f $file ]]; then
+function load() {
   while read line; do
-    line=$(printf '%s\r' "$line" | xxd -p)
-    echo gatttool -i hci0 -b "$mac_address" --char-write-req -a 0x0031 -n "$line"
+    line=$(printf '%s\r' "$line" | xxd -p | tr -d '\n')
+    echo gatttool -i hci0 -b "$mac_address" --char-write-req -a 0x0031 -n $line # @0xFACE: Remove echo when done
   done < $file
+}
+
+if [[ ! "$mac_address" =~ ^([a-fA-F0-9]{2}:){5}[a-zA-Z0-9]{2}$ ]]; then
+  error="Wrong MAC address! Example: AA:BB:CC:DD:EE:FF"
+elif [[ ! -r $file && -f $file ]]; then
+  error="No such file!"
+else
+  load
   exit
 fi
 
 cat <<- EOH
+  $error
+
   Usage: $0 <MAC address> <file>
 
   This tool will upload the file to the BlueBasic device that has that MAC address