Index: scripts/wifi_start_wpa_supplicant.sh
===================================================================
diff -u -rfa1cf5c0749a6249bec9a5f5653e3a19cbaba24a -r0629dfe6bcc3e85047319284fa4c534efbf58594
--- scripts/wifi_start_wpa_supplicant.sh	(.../wifi_start_wpa_supplicant.sh)	(revision fa1cf5c0749a6249bec9a5f5653e3a19cbaba24a)
+++ scripts/wifi_start_wpa_supplicant.sh	(.../wifi_start_wpa_supplicant.sh)	(revision 0629dfe6bcc3e85047319284fa4c534efbf58594)
@@ -1,7 +1,13 @@
 #!/bin/sh
+
+if [ $# -eq 0 ]; then
+    currentFile=$(basename "$0")
+    echo "Usage: ./$currentFile <iface> <wpa_supplicant_conf_path>"
+    exit 0
+fi
+
 iface=$1
 wpa_supplicant_path=$2
 killall udhcpc
 wpa_cli terminate
-sleep 1
 wpa_supplicant -B -i $iface -c $wpa_supplicant_path wext