Added option to wait for device to be connected (on by default)

Script looks for device every two seconds until device is found or script is aborted.
If Ctrl-C is detected script performs cleanup and exits.

aml-flash

@@ -12,6 +12,7 @@ destroy=
 update_return=
 debug=0
 simu=0
+wait_device=1
 RED='\033[0;31m'
 GREEN='\033[0;32m'
 YELLOW='\033[0;33m'
@@ -34,6 +35,7 @@ show_help()
     echo "             --*-file     => Force overload of partition files"
     echo "             --password   => Unlock usb mode using password file provided"
     echo "             --destroy    => Erase the bootloader and reset the board"
+    echo "             --no-wait    => Do not wait for device to be pluged in"
 }
 
 # Check if a given file exists and exit if not
@@ -59,6 +61,7 @@ cleanup()
 }
 cleanup_trap()
 {
+	echo -e "\nOperation stopped. Cleaning up..."
     cleanup
     exit 1
 }
@@ -182,6 +185,9 @@ for opt do
     --debug)
         debug=1
         ;;
+    --no-wait)
+        wait_device=0
+        ;;
     *)
         if [[ ${opt%=*} == "--"*"-file" ]]; then
            newvar=`echo ${opt%=*} | sed 's/--//' | sed 's/-file/_file/'`
@@ -215,18 +221,28 @@ if [[ "$soc" != "gxl" ]] && [[ "$soc" != "axg" ]] && [[ "$soc" != "txlx" ]] && [
    echo "Soc type is invalid, should be either gxl,axg,txlx,m8"
    exit 1
 fi
+
+# Set trap
+# --------
+trap cleanup_trap SIGHUP SIGINT SIGTERM
+
 run_update_return identify 7
 if [[ "$simu" != "1" ]]; then
    if ! `echo $update_return | grep -iq firmware`; then
-      echo "Amlogic device not found"
-      exit 1
+      if [[ "$wait_device" != "1" ]]; then
+         echo "Amlogic device not found"
+         exit 1
+      else
+         echo "Waiting for Amlogic device to be connected..."
+         while [ ! `echo $update_return | grep -iq firmware` ]
+         do
+             sleep 2
+             run_update_return identify 7
+         done
+      fi
    fi
 fi
 
-# Set trap
-# --------
-trap cleanup_trap SIGHUP SIGINT SIGTERM
-
 # Check if the board is locked with a password
 # --------------------------------------------
 need_password=0