From 9d0b4a0f0eed60322b3b48d67c56567c547a92c6 Mon Sep 17 00:00:00 2001
From: Jim Tan <jimtan@google.com>
Date: Wed, 21 Dec 2016 11:37:09 -0800
Subject: Move PMC from Master to AOSP

All the files of PMC are exactly the same as the files of PMC in
Master branch
Test: None
Bug: 33809986

Change-Id: Icf2c00908ab9ff147c6c06aecfa414f324cef4da
---
 PMC/Android.mk                                    |  24 ++
 PMC/AndroidManifest.xml                           |  46 +++
 PMC/build_pmc.sh                                  | 113 ++++++
 PMC/res/drawable-xhdpi/ic_launcher.png            | Bin 0 -> 12516 bytes
 PMC/res/layout/activity_linear.xml                |  96 ++++++
 PMC/res/layout/activity_setting.xml               | 110 ++++++
 PMC/res/menu/main.xml                             |  10 +
 PMC/res/values/dimens.xml                         |   7 +
 PMC/res/values/strings.xml                        |  27 ++
 PMC/res/values/styles.xml                         |  18 +
 PMC/src/com/android/pmc/BleScanReceiver.java      | 276 +++++++++++++++
 PMC/src/com/android/pmc/IperfClient.java          | 113 ++++++
 PMC/src/com/android/pmc/PMCMainActivity.java      | 400 ++++++++++++++++++++++
 PMC/src/com/android/pmc/SettingActivity.java      |  47 +++
 PMC/src/com/android/pmc/WifiConnScanReceiver.java | 149 ++++++++
 PMC/src/com/android/pmc/WifiDownloadReceiver.java | 185 ++++++++++
 PMC/src/com/android/pmc/WifiGScanReceiver.java    | 175 ++++++++++
 17 files changed, 1796 insertions(+)
 create mode 100644 PMC/Android.mk
 create mode 100644 PMC/AndroidManifest.xml
 create mode 100755 PMC/build_pmc.sh
 create mode 100644 PMC/res/drawable-xhdpi/ic_launcher.png
 create mode 100644 PMC/res/layout/activity_linear.xml
 create mode 100644 PMC/res/layout/activity_setting.xml
 create mode 100644 PMC/res/menu/main.xml
 create mode 100644 PMC/res/values/dimens.xml
 create mode 100644 PMC/res/values/strings.xml
 create mode 100644 PMC/res/values/styles.xml
 create mode 100644 PMC/src/com/android/pmc/BleScanReceiver.java
 create mode 100644 PMC/src/com/android/pmc/IperfClient.java
 create mode 100644 PMC/src/com/android/pmc/PMCMainActivity.java
 create mode 100644 PMC/src/com/android/pmc/SettingActivity.java
 create mode 100644 PMC/src/com/android/pmc/WifiConnScanReceiver.java
 create mode 100644 PMC/src/com/android/pmc/WifiDownloadReceiver.java
 create mode 100644 PMC/src/com/android/pmc/WifiGScanReceiver.java

diff --git a/PMC/Android.mk b/PMC/Android.mk
new file mode 100644
index 0000000..fcd25bd
--- /dev/null
+++ b/PMC/Android.mk
@@ -0,0 +1,24 @@
+LOCAL_PATH := $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_JAVA_LIBRARIES := bouncycastle conscrypt
+LOCAL_STATIC_JAVA_LIBRARIES := android-support-v4 android-support-v13 jsr305
+
+LOCAL_PACKAGE_NAME := PMC
+LOCAL_CERTIFICATE := platform
+LOCAL_DEX_PREOPT := false
+
+LOCAL_SRC_FILES := $(call all-java-files-under, src)
+LOCAL_RESOURCE_DIR := $(LOCAL_PATH)/res
+
+LOCAL_PRIVILEGED_MODULE := true
+LOCAL_PROGUARD_ENABLED := disabled
+
+include $(BUILD_PACKAGE)
+
+
+# only include rules to build other stuff for the original package, not the derived package.
+#ifeq ($(strip $(LOCAL_PACKAGE_OVERRIDES)),)
+# additionally, build unit tests in a separate .apk
+include $(call all-makefiles-under,$(LOCAL_PATH))
+#endif
diff --git a/PMC/AndroidManifest.xml b/PMC/AndroidManifest.xml
new file mode 100644
index 0000000..127e11d
--- /dev/null
+++ b/PMC/AndroidManifest.xml
@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.android.pmc"
+    android:versionCode="3"
+    android:versionName="3.0" >
+
+    <uses-sdk
+        android:minSdkVersion="19"
+        android:targetSdkVersion="21" />
+
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
+    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
+    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
+    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
+    <uses-permission android:name="android.permission.LOCATION_HARDWARE" />
+    <uses-permission android:name="android.permission.WAKE_LOCK" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.BLUETOOTH" />
+    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
+    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@drawable/ic_launcher"
+        android:label="@string/app_name"
+        android:theme="@style/AppTheme" >
+        <!-- Main activity -->
+        <activity
+            android:name="com.android.pmc.PMCMainActivity"
+            android:configChanges="keyboardHidden|orientation|screenSize"
+            android:label="@string/app_name" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <!-- Settings activity -->
+        <activity
+            android:name="com.android.pmc.SettingActivity"
+            android:configChanges="keyboardHidden|orientation|screenSize"
+            android:label="@string/settings" >
+        </activity>
+    </application>
+
+</manifest>
diff --git a/PMC/build_pmc.sh b/PMC/build_pmc.sh
new file mode 100755
index 0000000..4f57274
--- /dev/null
+++ b/PMC/build_pmc.sh
@@ -0,0 +1,113 @@
+#! /bin/bash
+#This script does a clean build of PMC and install it to your device through adb
+#Requires envsetup.sh in the branch
+
+#function to change jdk version
+function setup_jdk() {
+  # Remove the current JDK from PATH
+  if [ -n "$JAVA_HOME" ] ; then
+    PATH=${PATH/$JAVA_HOME\/bin:/}
+  fi
+  export JAVA_HOME=$1
+  export PATH=$JAVA_HOME/bin:$PATH
+}
+
+#Color code for echo
+r='\e[0;31m'
+brn='\e[0;33m'
+y='\e[1;33m'
+g='\e[0;32m'
+cy='\e[0;36m'
+lb='\e[1;34m'
+p='\e[0;35m'
+lg='\e[0;37m'
+NC='\e[0m' # No Color
+
+echo -e "Welcome to ${r}U${brn}N${y}I${g}C${lb}O${cy}R${p}N${NC} build system for ${g}PMC${NC}"
+
+IFS='_' read -a array <<< "$TARGET_PRODUCT"
+export TP=${array[0]}
+if [[ ${#array[@]} -eq 2 ]]; then
+  export TP=${array[1]}
+fi
+
+APP_NAME=PMC
+APP_PACKAGE_NAME=com.android.pmc
+
+BRANCH_ROOT=$PWD/../../../../..
+PMC_PROJ=$BRANCH_ROOT/vendor/google_testing/comms/Tools/PMC
+SHARED_LIB_JAR_ROOT=$BRANCH_ROOT/out/target/common/obj/JAVA_LIBRARIES
+APP_JAR_ROOT=$BRANCH_ROOT/out/target/common/obj/APPS
+APK_ROOT=$BRANCH_ROOT/out/target/product/$TP/system/priv-app/PMC
+
+function pmc_build {
+
+echo -e "${y}Removing intermeidates of the app${NC}"
+rm -r $APP_JAR_ROOT/"$APP_NAME"_intermediates
+#Remove the apk file
+rm $APK_ROOT/"$APP_NAME".apk
+
+#Build all the dependency libs
+. $BRANCH_ROOT/build/envsetup.sh
+
+exec () {
+  ${@:1:($#-1)}
+  if [ $? -ne 0 ]; then
+    echo -e "${r}Encountered error when ${@:$#}${NC}"
+    echo -e "${lg}UNICORN ${r}DIED${NC}!"
+    exit 1
+  fi
+}
+
+echo -e "${lb}+++++++ Building $APP_NAME.apk +++++++${NC}"
+cd $PMC_PROJ
+exec mm -B "building $APP_NAME.apk"
+echo
+
+}
+
+function pmc_flash {
+
+echo -e "${y}Switching to root${NC}"
+adb root
+adb wait-for-device remount
+
+echo -e "${y}Uninstalling old apk from device${NC}"
+adb uninstall $APP_PACKAGE_NAME
+adb shell rm -r /system/priv-app/$APP_NAME.apk
+
+echo -e "${lb}Installing apk to device${NC}"
+cd $APK_ROOT
+#exec adb install $APP_NAME.apk "installing apk to device"
+#exec adb push $APP_NAME.apk /system/priv-app "installing apk to previliged dir"
+exec adb install -r $APP_NAME.apk "installing apk to previliged dir"
+
+}
+
+DO_BUILD=1
+DO_FLASH=1
+
+if [ $# -ne 0 ] ; then
+  DO_BUILD=0
+  DO_FLASH=0
+  while getopts "bf" ARG
+  do
+    case $ARG in
+      b) DO_BUILD=1 && echo "Build it we will.";;
+      f) DO_FLASH=1 && echo "Flash it we must.";;
+      ?) echo "Invalid Argument ${ARG}" && exit 1;;
+    esac
+  done
+fi
+
+if [ ${DO_BUILD} -eq "1" ] ; then
+  pmc_build
+fi
+
+if [ ${DO_FLASH} -eq "1" ] ; then
+  pmc_flash
+fi
+
+echo "All clear!"
+echo -e " ${r}U${brn}N${y}I${g}C${cy}O${lb}R${p}N ${r}P${brn}O${y}W${g}E${cy}R${lb}!${p}!${NC}"
+
diff --git a/PMC/res/drawable-xhdpi/ic_launcher.png b/PMC/res/drawable-xhdpi/ic_launcher.png
new file mode 100644
index 0000000..d4fb7cd
Binary files /dev/null and b/PMC/res/drawable-xhdpi/ic_launcher.png differ
diff --git a/PMC/res/layout/activity_linear.xml b/PMC/res/layout/activity_linear.xml
new file mode 100644
index 0000000..6461b4d
--- /dev/null
+++ b/PMC/res/layout/activity_linear.xml
@@ -0,0 +1,96 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="fill_parent"
+    android:layout_height="fill_parent"
+    android:orientation="vertical" >
+
+    <TextView
+        android:id="@+id/text_title"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentTop="true"
+        android:textSize="18sp"
+        android:text="@string/choose_pm_activity" />
+
+    <RadioGroup
+        android:id="@+id/rb_dataselect"
+        android:layout_below="@+id/text_title"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content" >
+
+        <RadioButton
+            android:id="@+id/rb_connscan"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/conn_scan"
+            android:checked="true" />
+
+        <RadioButton
+            android:id="@+id/rb_kb"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/kbfile"/>
+
+        <RadioButton
+            android:id="@+id/rb_tenkb"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/tenkbfile" />
+
+        <RadioButton
+            android:id="@+id/rb_hundredkb"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/hundredkbfile" />
+
+        <RadioButton
+            android:id="@+id/rb_mb"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/mbfile" />
+
+        <RadioButton
+            android:id="@+id/rb_gscan2g"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/gscan_2g" />
+
+        <RadioButton
+            android:id="@+id/rb_gscan_without_dfs"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/gscan_without_dfs" />
+
+        <RadioButton
+            android:id="@+id/rb_iperf_client"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/iperf_client" />
+    </RadioGroup>
+
+    <Button
+        android:id="@+id/btnstart"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignBaseline="@+id/btnstop"
+        android:layout_alignBottom="@+id/btnstop"
+        android:layout_alignStart="@+id/rb_dataselect"
+        android:text="@string/btn_start" />
+
+    <Button
+        android:id="@+id/btnstop"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_below="@+id/rb_dataselect"
+        android:layout_toEndOf="@+id/text_content"
+        android:text="@string/btn_stop" />
+
+    <TextView
+        android:id="@+id/text_content"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignEnd="@+id/text_title"
+        android:layout_alignParentStart="true"
+        android:layout_below="@+id/btnstart" />
+
+</RelativeLayout>
diff --git a/PMC/res/layout/activity_setting.xml b/PMC/res/layout/activity_setting.xml
new file mode 100644
index 0000000..b682a9b
--- /dev/null
+++ b/PMC/res/layout/activity_setting.xml
@@ -0,0 +1,110 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="fill_parent"
+    android:layout_height="fill_parent"
+    android:orientation="vertical" >
+
+    <TextView
+        android:id="@+id/server_ip"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentTop="true"
+        android:labelFor="@+id/server_iptext"
+        android:textSize="16sp"
+        android:text="@string/server_ip" />
+
+    <EditText
+        android:id="@+id/server_iptext"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_alignParentStart="true"
+        android:layout_below="@+id/server_ip"
+        android:layout_marginTop="16dp"
+        android:inputType="phone"
+        android:ems="10" />
+
+    <TextView
+        android:id="@+id/server_port"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentStart="true"
+        android:layout_below="@+id/server_iptext"
+        android:labelFor="@+id/server_porttext"
+        android:layout_marginTop="33dp"
+        android:textSize="16sp"
+        android:text="@string/server_port" />
+
+   <EditText
+        android:id="@+id/server_porttext"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_alignParentStart="true"
+        android:layout_below="@+id/server_port"
+        android:layout_marginTop="17dp"
+        android:inputType="number"
+        android:ems="10" />
+
+    <TextView
+        android:id="@+id/interval"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentStart="true"
+        android:layout_below="@+id/server_porttext"
+        android:labelFor="@+id/intervaltext"
+        android:layout_marginTop="33dp"
+        android:textSize="16sp"
+        android:text="@string/interval" />
+
+   <EditText
+        android:id="@+id/intervaltext"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_alignParentStart="true"
+        android:layout_below="@+id/interval"
+        android:layout_marginTop="17dp"
+        android:inputType="number"
+        android:ems="10" />
+
+   <TextView
+       android:id="@+id/iperf_bandwidth"
+       android:layout_width="wrap_content"
+       android:layout_height="wrap_content"
+       android:layout_alignParentStart="true"
+       android:layout_below="@+id/intervaltext"
+       android:labelFor="@+id/iperf_bandwidthtext"
+       android:layout_marginTop="33dp"
+       android:textSize="16sp"
+       android:text="@string/iperf_bandwidth" />
+
+   <EditText
+       android:id="@+id/iperf_bandwidthtext"
+       android:layout_width="match_parent"
+       android:layout_height="wrap_content"
+       android:layout_alignParentStart="true"
+       android:layout_below="@+id/iperf_bandwidth"
+       android:layout_marginTop="17dp"
+       android:inputType="number"
+       android:ems="10" />
+
+   <TextView
+       android:id="@+id/iperf_logfile"
+       android:layout_width="wrap_content"
+       android:layout_height="wrap_content"
+       android:layout_alignParentStart="true"
+       android:layout_below="@+id/iperf_bandwidthtext"
+       android:labelFor="@+id/iperf_logfiletext"
+       android:layout_marginTop="33dp"
+       android:textSize="16sp"
+       android:text="@string/iperf_logfile" />
+
+   <EditText
+       android:id="@+id/iperf_logfiletext"
+       android:layout_width="match_parent"
+       android:layout_height="wrap_content"
+       android:layout_alignParentStart="true"
+       android:layout_below="@+id/iperf_logfile"
+       android:layout_marginTop="17dp"
+       android:inputType="text"
+       android:ems="10" />
+
+</RelativeLayout>
diff --git a/PMC/res/menu/main.xml b/PMC/res/menu/main.xml
new file mode 100644
index 0000000..0286b46
--- /dev/null
+++ b/PMC/res/menu/main.xml
@@ -0,0 +1,10 @@
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    tools:context="com.example.dataflow.MainActivity" >
+
+    <item
+        android:id="@+id/action_setting"
+        android:orderInCategory="100"
+        android:showAsAction="never"
+        android:title="@string/settings"/>
+</menu>
diff --git a/PMC/res/values/dimens.xml b/PMC/res/values/dimens.xml
new file mode 100644
index 0000000..55c1e59
--- /dev/null
+++ b/PMC/res/values/dimens.xml
@@ -0,0 +1,7 @@
+<resources>
+
+    <!-- Default screen margins, per the Android Design guidelines. -->
+    <dimen name="activity_horizontal_margin">16dp</dimen>
+    <dimen name="activity_vertical_margin">16dp</dimen>
+
+</resources>
diff --git a/PMC/res/values/strings.xml b/PMC/res/values/strings.xml
new file mode 100644
index 0000000..2d37c06
--- /dev/null
+++ b/PMC/res/values/strings.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <string name="app_name">PMC</string>
+    <string name="settings">Settings</string>
+    <string name="choose_pm_activity">Start Power Measuring Activity</string>
+    <string name="start_dataflow">Start background data!</string>
+    <string name="action_settings">Settings</string>
+    <string name="action_stop">Stop</string>
+    <string name="action_start">Start</string>
+    <string name="conn_scan">Connectivity Scan</string>
+    <string name="gscan_2g">GScan for Channel-1,6,11</string>
+    <string name="gscan_without_dfs">GScan without DFS Channel</string>
+    <string name="iperf_client">Iperf Client</string>
+    <string name="kbfile">Download 1KB file</string>
+    <string name="tenkbfile">Download 10KB file</string>
+    <string name="hundredkbfile">Download 100KB file</string>
+    <string name="mbfile">Download 1MB file</string>
+    <string name="btn_start">Start</string>
+    <string name="btn_stop">Stop</string>
+    <string name="server_ip">Server IP</string>
+    <string name="server_port">Server Port</string>
+    <string name="interval">Download/Scan Interval (seconds)</string>
+    <string name="iperf_bandwidth">Iperf Bandwidth</string>
+    <string name="iperf_logfile">Iperf Logfile</string>
+
+</resources>
diff --git a/PMC/res/values/styles.xml b/PMC/res/values/styles.xml
new file mode 100644
index 0000000..d53bc55
--- /dev/null
+++ b/PMC/res/values/styles.xml
@@ -0,0 +1,18 @@
+<resources>
+
+    <!--
+        Base application theme for API 14+. This theme completely replaces
+        AppBaseTheme from BOTH res/values/styles.xml and
+        res/values-v11/styles.xml on API 14+ devices.
+    -->
+    <style name="AppBaseTheme" parent="android:Theme.Holo.Light.DarkActionBar">
+        <!-- API 14 theme customizations can go here. -->
+    </style>
+
+     <!-- Application theme. -->
+    <style name="AppTheme" parent="AppBaseTheme">
+        <!-- All customizations that are NOT specific to a particular API-level can go here. -->
+    </style>
+
+
+</resources>
diff --git a/PMC/src/com/android/pmc/BleScanReceiver.java b/PMC/src/com/android/pmc/BleScanReceiver.java
new file mode 100644
index 0000000..91ab526
--- /dev/null
+++ b/PMC/src/com/android/pmc/BleScanReceiver.java
@@ -0,0 +1,276 @@
+/*
+ * Copyright (C) 2016 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+package com.android.pmc;
+
+import android.app.AlarmManager;
+import android.app.PendingIntent;
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.le.BluetoothLeScanner;
+import android.bluetooth.le.ScanCallback;
+import android.bluetooth.le.ScanFilter;
+import android.bluetooth.le.ScanResult;
+import android.bluetooth.le.ScanSettings;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.os.Bundle;
+import android.os.SystemClock;
+import android.util.Log;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Bluetooth LE Receiver functions for power testing.
+ */
+public class BleScanReceiver extends BroadcastReceiver {
+    public static final String TAG = "BLEPOWER";
+    public static final String BLE_SCAN_INTENT = "com.android.pmc.BLESCAN";
+    public static final int START_SCAN = 1;
+    public static final int STOP_SCAN = 2;
+    public static final int INIT_ALARM_NO = 1;
+    private final Context mContext;
+    private final AlarmManager mAlarmManager;
+    private final BleScanListener mAlarmScanListener;
+    private BluetoothLeScanner mBleScanner;
+    private ScanSettings mScanSettings;
+    private List<ScanFilter> mScanFilterList;
+
+    private ScanCallback mScanCallback = new ScanCallback() {
+        @Override
+        public void onScanResult(int callbackType, ScanResult result) {
+            Log.e(TAG, "Bluetooth scan result: " + result.toString());
+        }
+
+        @Override
+        public void onScanFailed(int errorCode) {
+            Log.e(TAG, "Scan Failed: " + errorCode);
+        }
+    };
+
+    /**
+     * Class to provide callback for AlarmManager to start BLE scan alarms
+     */
+    public class BleScanListener extends BroadcastReceiver {
+
+        public static final String BLESCAN =
+                       "com.android.pmc.BLESCAN.ALARM";
+
+        private int mScanTime;
+        private int mNoScanTime;
+        private int mNumAlarms;
+
+        /**
+         * Constructor
+         *
+         */
+        public BleScanListener() {
+            BluetoothAdapter bleAdaptor = BluetoothAdapter.getDefaultAdapter();
+            if (bleAdaptor == null) {
+                Log.e(TAG, "BleAdaptor is Null");
+                return;
+            } else {
+                if (!bleAdaptor.isEnabled()) {
+                    Log.e(TAG, "BleAdaptor is NOT enabled");
+                    return;
+                }
+            }
+            mBleScanner = bleAdaptor.getBluetoothLeScanner();
+            mScanFilterList = new ArrayList<ScanFilter>();
+        }
+
+        /**
+         * Function to be called by BleScanReceiver to start
+         * Initial Bluetooth scan alarm
+         *
+         * @param scanMode - scan mode
+         * @param startTime - time when the first scan needs to be started
+         * @param scanTime - time for the scan is lasted
+         * @param noScanTime - time when the scan is stopped
+         * @param numAlarms - number of alarms to start and to stop scan
+         *
+         */
+        public void firstAlarm(int scanMode, int startTime, int scanTime,
+                               int noScanTime, int numAlarms) {
+            Log.d(TAG, "First Alarm for scan mode: " + scanMode);
+            mScanTime = scanTime;
+            mNoScanTime = noScanTime;
+            mNumAlarms = numAlarms;
+            mScanSettings = new ScanSettings.Builder().setScanMode(
+                                            scanMode).build();
+
+            Intent alarmIntent = new Intent(BleScanListener.BLESCAN);
+            alarmIntent.putExtra("com.android.pmc.BLESCAN.Action", START_SCAN);
+            alarmIntent.putExtra("com.android.pmc.BLESCAN.CurrentAlarm", INIT_ALARM_NO);
+            long triggerTime = SystemClock.elapsedRealtime()
+                               + startTime * 1000;
+            mAlarmManager.setExactAndAllowWhileIdle(
+                          AlarmManager.ELAPSED_REALTIME_WAKEUP, triggerTime,
+                          PendingIntent.getBroadcast(mContext, 0,
+                                        alarmIntent, PendingIntent.FLAG_UPDATE_CURRENT));
+        }
+
+        /**
+         * Function to be called by onReceive() to start subsequent alarm
+         *
+         * @param intent - intent to get extra data
+         * @param timeInterval - time for alarm to trigger next alarm
+         * @param nextAction - next action for the alarm
+         *
+         */
+        public void repeatAlarm(Intent intent, int timeInterval,
+                                  int nextAction) {
+
+            int currentAlarm = intent.getIntExtra("com.android.pmc.BLESCAN.CurrentAlarm", 0);
+            Log.d(TAG, "repeatAlarm() currentAlarm: " + currentAlarm);
+            if (currentAlarm == 0) {
+                Log.d(TAG, "Received Alarm with no currentAlarm");
+                return;
+            }
+            if (currentAlarm >= mNumAlarms) {
+                Log.d(TAG, "All alarms are done");
+                return;
+            }
+            Log.d(TAG, "Next Action: " + nextAction);
+            Intent alarmIntent = new Intent(BleScanListener.BLESCAN);
+            alarmIntent.putExtra("com.android.pmc.BLESCAN.Action", nextAction);
+            alarmIntent.putExtra("com.android.pmc.BLESCAN.CurrentAlarm", ++currentAlarm);
+            long triggerTime = SystemClock.elapsedRealtime()
+                                          + timeInterval * 1000;
+            mAlarmManager.setExactAndAllowWhileIdle(
+                          AlarmManager.ELAPSED_REALTIME_WAKEUP, triggerTime,
+                          PendingIntent.getBroadcast(mContext, 0,
+                          alarmIntent, PendingIntent.FLAG_UPDATE_CURRENT));
+        }
+
+        /**
+         * Callback will be called for AlarmManager to start Bluetooth LE scan
+         *
+         * @param context - system will provide a context to this function
+         * @param intent - system will provide an intent to this function
+         */
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            if (!intent.getAction().equals(BLESCAN)) {
+                return;
+            }
+            int action = intent.getIntExtra("com.android.pmc.BLESCAN.Action", 0);
+            Log.d(TAG, "onReceive() Action: " + action);
+            if (action == -1) {
+                Log.e(TAG, "Received Alarm with no Action");
+                return;
+            }
+            if (action == START_SCAN) {
+                Log.v(TAG, "Before Start Scan");
+                mBleScanner.startScan(mScanFilterList, mScanSettings,
+                                 mScanCallback);
+                repeatAlarm(intent, mScanTime, STOP_SCAN);
+            } else if (action == STOP_SCAN) {
+                Log.v(TAG, "Before Stop scan");
+                mBleScanner.stopScan(mScanCallback);
+                repeatAlarm(intent, mNoScanTime, START_SCAN);
+            } else {
+                Log.e(TAG, "Unknown Action");
+            }
+        }
+    }
+
+    /**
+     * Constructor to be called by PMC
+     *
+     * @param context - PMC will provide a context
+     * @param alarmManager - PMC will provide alarmManager
+     */
+    public BleScanReceiver(Context context, AlarmManager alarmManager) {
+        // prepare for setting alarm service
+        mContext = context;
+        mAlarmManager = alarmManager;
+        mAlarmScanListener = new BleScanListener();
+
+        // RegisterAlarmReceiver for BleStartScanListener and BleStopScanListener
+        mContext.registerReceiver(mAlarmScanListener,
+                new IntentFilter(BleScanListener.BLESCAN));
+
+    }
+
+    /**
+     * Method to receive the broadcast from python client
+     *
+     * @param context - system will provide a context to this function
+     * @param intent - system will provide an intent to this function
+     */
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        if (intent.getAction().equals(BLE_SCAN_INTENT)) {
+            Bundle extras = intent.getExtras();
+            int scanMode = -1, startTime = 0, scanTime = 0, noScanTime = 0;
+            int repetitions = 1;
+            String str;
+
+            if (extras == null) {
+                Log.e(TAG, "No parameters specified");
+                return;
+            }
+
+            if (!extras.containsKey("ScanMode")) {
+                Log.e(TAG, "No scan mode specified");
+                return;
+            }
+            str = extras.getString("ScanMode");
+            Log.d(TAG, "Scan Mode = " + str);
+            scanMode = Integer.valueOf(str);
+
+            if (!extras.containsKey("StartTime")) {
+                Log.e(TAG, "No Start Time specified");
+                return;
+            }
+            str = extras.getString("StartTime");
+            Log.d(TAG, "Start Time = " + str);
+            startTime = Integer.valueOf(str);
+
+            if (!extras.containsKey("ScanTime")) {
+                Log.e(TAG, "No Scan Time specified");
+                return;
+            }
+            str = extras.getString("ScanTime");
+            Log.d(TAG, "Scan Time = " + str);
+            scanTime = Integer.valueOf(str);
+
+            if (extras.containsKey("Repetitions")) {
+
+                str = extras.getString("Repetitions");
+                Log.d(TAG, "Repetitions = " + str);
+                repetitions = Integer.valueOf(str);
+
+                if (!extras.containsKey("NoScanTime")) {
+                    Log.e(TAG, "No NoScan Time specified");
+                    return;
+                }
+                str = extras.getString("NoScanTime");
+                Log.d(TAG, "NoScan Time = " + str);
+                noScanTime = Integer.valueOf(str);
+            }
+            if (scanTime == 0 || startTime == 0 || scanMode == -1) {
+                Log.d(TAG, "Invalid paramters");
+                return;
+            }
+            mAlarmScanListener.firstAlarm(scanMode, startTime,
+                                       scanTime, noScanTime, repetitions * 2);
+        }
+    }
+}
diff --git a/PMC/src/com/android/pmc/IperfClient.java b/PMC/src/com/android/pmc/IperfClient.java
new file mode 100644
index 0000000..a6dbf99
--- /dev/null
+++ b/PMC/src/com/android/pmc/IperfClient.java
@@ -0,0 +1,113 @@
+package com.android.pmc;
+
+import android.app.AlarmManager;
+import android.app.PendingIntent;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.net.wifi.WifiManager;
+import android.os.AsyncTask;
+import android.os.PowerManager;
+import android.os.SystemClock;
+import android.util.Log;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Starts an iperf client with the provided params for data transmission tests.
+ * The client starts a UDP data transfer with the provided server with the max possible timeout.t a
+ */
+public class IperfClient {
+
+    private static final String IPERF_COMMAND = "iperf3";
+    private static final String IPERF_OPTION_SERVER_FLAG = "-c";
+    private static final String IPERF_OPTION_PORT_FLAG = "-p";
+    private static final String IPERF_OPTION_BANDWIDTH_FLAG = "-b";
+    private static final String IPERF_OPTION_INTERVAL_FLAG = "-i";
+    private static final String IPERF_OPTION_VERBOSE_FLAG = "-V";
+    private static final String IPERF_OPTION_UDP_FLAG = "-u";
+    private static final String IPERF_OPTION_JSON_OUTPUT_FLAG = "-J";
+    private static final String IPERF_OPTION_TIMEOUT_FLAG = "-t";
+    private static final String IPERF_OPTION_LOGFILE_FLAG = "--logfile";
+    private static final String IPERF_OPTION_TMPDIR_FLAG = "--tmpdir";
+    private static final int IPERF_OPTION_INTERVAL = 2;
+    // This is the max value supported by iperf3.
+    private static final int IPERF_OPTION_TIMEOUT = 86400;
+
+    private final PMCMainActivity mPMCMainActivity;
+    private final ProcessBuilder mProcessBuilder;
+    private PowerManager.WakeLock mWakeLock;
+    private Process mProcess;
+    private File mLogFile;
+
+    public IperfClient(PMCMainActivity activity, String serverAddress,
+            String serverPort, String bandWidthInMbps, String logFile) {
+        mPMCMainActivity = activity;
+        List<String> cmdList = new ArrayList<>();
+        cmdList.add(IPERF_COMMAND);
+        cmdList.add(IPERF_OPTION_VERBOSE_FLAG);
+        cmdList.add(IPERF_OPTION_UDP_FLAG);
+        cmdList.add(IPERF_OPTION_JSON_OUTPUT_FLAG);
+        cmdList.add(IPERF_OPTION_INTERVAL_FLAG);
+        cmdList.add(Integer.toString(IPERF_OPTION_INTERVAL));
+        cmdList.add(IPERF_OPTION_TIMEOUT_FLAG);
+        cmdList.add(Integer.toString(IPERF_OPTION_TIMEOUT));
+        cmdList.add(IPERF_OPTION_TMPDIR_FLAG);
+        cmdList.add(activity.getCacheDir().getPath());
+        if (serverAddress != null && serverAddress.length() > 0) {
+            cmdList.add(IPERF_OPTION_SERVER_FLAG);
+            cmdList.add(serverAddress);
+        }
+        if (serverPort != null && serverPort.length() > 0) {
+            cmdList.add(IPERF_OPTION_PORT_FLAG);
+            cmdList.add(serverPort);
+        }
+        if (bandWidthInMbps != null && bandWidthInMbps.length() > 0) {
+            cmdList.add(IPERF_OPTION_BANDWIDTH_FLAG);
+            cmdList.add(bandWidthInMbps);
+        }
+        if (logFile != null && logFile.length() > 0) {
+            mLogFile = new File(logFile);
+        }
+        mProcessBuilder = new ProcessBuilder(cmdList);
+    }
+
+    /**
+     * Start the iperf client
+     */
+    public void startClient() {
+        Log.i(PMCMainActivity.TAG, "Starting iperf client: " + mProcessBuilder.command());
+        PowerManager pm = (PowerManager) mPMCMainActivity.getSystemService(Context.POWER_SERVICE);
+        mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WIFITEST");
+        // Acquire the lock
+        mWakeLock.acquire();
+        try {
+            mProcessBuilder.redirectOutput(mLogFile);
+            mProcessBuilder.redirectError(mLogFile);
+            mProcess = mProcessBuilder.start();
+        } catch (Exception e) {
+            Log.e(PMCMainActivity.TAG, "Starting iperf client failed: " + e);
+            mPMCMainActivity.updateProgressStatus("Starting iperf client failed");
+        }
+    }
+
+    /**
+     * Stop the iperf client
+     */
+    public void stopClient() {
+        if (mProcess != null) {
+            Log.i(PMCMainActivity.TAG, "Stopping iperf client: " + mProcessBuilder.command());
+            try {
+                mProcess.destroy();
+                mProcess.waitFor();
+            } catch (Exception e) {
+                Log.e(PMCMainActivity.TAG, "Stopping iperf client failed: " + e);
+            }
+            mWakeLock.release();
+            mProcess = null;
+        }
+    }
+}
diff --git a/PMC/src/com/android/pmc/PMCMainActivity.java b/PMC/src/com/android/pmc/PMCMainActivity.java
new file mode 100644
index 0000000..71c7920
--- /dev/null
+++ b/PMC/src/com/android/pmc/PMCMainActivity.java
@@ -0,0 +1,400 @@
+package com.android.pmc;
+
+import android.app.Activity;
+import android.app.AlarmManager;
+import android.app.PendingIntent;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.net.wifi.WifiScanner;
+import android.net.wifi.WifiScanner.ChannelSpec;
+import android.net.wifi.WifiScanner.ScanSettings;
+import android.os.Bundle;
+import android.os.PowerManager;
+import android.util.Log;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.View;
+import android.widget.Button;
+import android.widget.RadioGroup;
+import android.widget.TextView;
+import android.widget.Toast;
+
+public class PMCMainActivity extends Activity {
+
+    public static final String TAG = "PMC";
+    public static final String SETTING_SERVER_IP_KEY = "ServerIP";
+    public static final String SETTING_SERVER_PORT_KEY = "ServerPort";
+    public static final String SETTING_INTERVAL_KEY = "Interval";
+    public static final String SETTING_IPERF_BANDWIDTH_KEY = "IperfBandwidth";
+    public static final String SETTING_IPERF_LOGFILE_KEY = "IperfLogfile";
+    private static final String sConnScanAction = "ConnectionScan";
+    private static final String sGScanAction = "GScan";
+    private static final String sDownloadAction = "DownloadData";
+    private static final String SETPARAMS_INTENT_STRING = "com.android.pmc.action.SETPARAMS";
+    private static final String AUTOPOWER_INTENT_STRING = "com.android.pmc.action.AUTOPOWER";
+
+    TextView mTextView;
+    Intent mSettingIntent;
+    private PendingIntent mPIGScan;
+    private PendingIntent mPIDownload;
+    private PendingIntent mPIConnScan;
+    private String mServerIP = "10.10.10.1";
+    private String mServerPort = "8080";
+    private int mIntervalMillis = 60 * 1000;
+    private String mIperfBandwidth = "1M";
+    private String mIperfLogFile = "/sdcard/iperf.txt";
+    private WifiConnScanReceiver mConnSR = null;
+    private WifiGScanReceiver mGScanR = null;
+    private WifiDownloadReceiver mDR = null;
+    private IperfClient mIperfClient = null;
+    private RadioGroup mRadioGroup;
+    private Button mBtnStart;
+    private Button mBtnStop;
+    private PMCReceiver mPMCReceiver;
+    private BleScanReceiver mBleScanReceiver;
+    private AlarmManager mAlarmManager;
+    private PowerManager.WakeLock mWakeLock;
+
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        //Initiate wifi service manger
+        mAlarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
+        mPIGScan = PendingIntent.getBroadcast(this, 0, new Intent(sGScanAction), 0);
+        mPIDownload = PendingIntent.getBroadcast(this, 0, new Intent(sDownloadAction), 0);
+        mPIConnScan = PendingIntent.getBroadcast(this, 0, new Intent(sConnScanAction), 0);
+        mPMCReceiver = new PMCReceiver();
+        mBleScanReceiver = new BleScanReceiver(this, mAlarmManager);
+        setContentView(R.layout.activity_linear);
+        mTextView = (TextView) findViewById(R.id.text_content);
+        mRadioGroup = (RadioGroup) findViewById(R.id.rb_dataselect);
+        mBtnStart = (Button) findViewById(R.id.btnstart);
+        mBtnStop = (Button) findViewById(R.id.btnstop);
+        addListenerOnButton();
+        registerReceiver(mPMCReceiver, new IntentFilter(AUTOPOWER_INTENT_STRING));
+        registerReceiver(mPMCReceiver, new IntentFilter(SETPARAMS_INTENT_STRING));
+        registerReceiver(mBleScanReceiver, new IntentFilter(BleScanReceiver.BLE_SCAN_INTENT));
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        unregisterReceiver(mPMCReceiver);
+    }
+
+    public void addListenerOnButton() {
+        mBtnStart.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                // get selected radio button from radioGroup
+                int selectedId = mRadioGroup.getCheckedRadioButtonId();
+                switch (selectedId) {
+                    case R.id.rb_hundredkb:
+                        startDownloadFile("100kb.txt");
+                        break;
+                    case R.id.rb_kb:
+                        startDownloadFile("1kb.txt");
+                        break;
+                    case R.id.rb_tenkb:
+                        startDownloadFile("10kb.txt");
+                        break;
+                    case R.id.rb_mb:
+                        startDownloadFile("1mb.txt");
+                        break;
+                    case R.id.rb_connscan:
+                        startConnectivityScan();
+                        break;
+                    case R.id.rb_gscan2g:
+                        Integer[] channelList = {2412, 2437, 2462};
+                        startGscan(WifiScanner.WIFI_BAND_UNSPECIFIED, channelList);
+                        break;
+                    case R.id.rb_gscan_without_dfs:
+                        startGscan(WifiScanner.WIFI_BAND_BOTH, null);
+                        break;
+                    case R.id.rb_iperf_client:
+                        startIperfClient();
+                        break;
+                    default:
+                        return;
+                }
+            }
+        });
+
+        mBtnStop.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                stopConnectivityScan();
+                stopDownloadFile();
+                stopGScan();
+                stopIperfClient();
+                mBtnStart.setEnabled(true);
+            }
+        });
+    }
+
+    /**
+     * Updates progress on the UI.
+     * @param status
+     */
+    public void updateProgressStatus(String status) {
+        mTextView.setText(status);
+    }
+
+    private void startDownloadFile(String filename) {
+        // Stop any ongoing download sessions before starting a new instance.
+        stopDownloadFile();
+        Log.d(TAG, "serverIP ::" + mServerIP + " Port ::" + mServerPort
+                + ". Interval: " + mIntervalMillis);
+        if (mServerIP.length() == 0 || mServerPort.length() == 0) {
+            String msg = "Provide server IP and Port information in Setting";
+            Toast errorMsg = Toast.makeText(getBaseContext(), msg, Toast.LENGTH_LONG);
+            errorMsg.show();
+            startSettingActivity();
+        } else {
+            mDR = new WifiDownloadReceiver(PMCMainActivity.this,
+                    "http://" + mServerIP + ":" + mServerPort + "/" + filename, mIntervalMillis,
+                    mAlarmManager, mPIDownload);
+            registerReceiver(mDR, new IntentFilter(sDownloadAction));
+            Log.d(TAG, "Setting download data alarm. Interval: " + mIntervalMillis);
+            mDR.scheduleDownload();
+            mBtnStart.setEnabled(false);
+            mRadioGroup.setFocusable(false);
+            mTextView.setText("Started downloadng " + filename);
+        }
+    }
+
+    private void stopDownloadFile() {
+        if (mDR != null) {
+            unregisterReceiver(mDR);
+            mDR.cancelDownload();
+            mDR = null;
+            mBtnStart.setEnabled(true);
+            mRadioGroup.setFocusable(true);
+            mTextView.setText("Stopped download");
+        }
+    }
+
+    private void startConnectivityScan() {
+        // Stop any ongoing scans before starting a new instance.
+        stopConnectivityScan();
+        mConnSR = new WifiConnScanReceiver(this, mIntervalMillis, mAlarmManager, mPIConnScan);
+        registerReceiver(mConnSR, new IntentFilter(sConnScanAction));
+        Log.d(TAG, "Setting connectivity scan alarm. Interval: " + mIntervalMillis);
+        mConnSR.scheduleConnScan();
+        mBtnStart.setEnabled(false);
+        mRadioGroup.setFocusable(false);
+        mTextView.setText("Started connectivity scan");
+    }
+
+    private void stopConnectivityScan() {
+        if (mConnSR != null) {
+            unregisterReceiver(mConnSR);
+            mConnSR.cancelConnScan();
+            mConnSR = null;
+            mBtnStart.setEnabled(true);
+            mRadioGroup.setFocusable(true);
+            mTextView.setText("Stopped connectivity scan");
+        }
+    }
+
+    private void startGscan(int band, Integer[] channelList) {
+        // Stop any ongoing scans before starting a new instance.
+        stopGScan();
+        ScanSettings scanSettings = new ScanSettings();
+        String message;
+        if (band == WifiScanner.WIFI_BAND_UNSPECIFIED) {
+            ChannelSpec[] channels = new ChannelSpec[channelList.length];
+            for (int i = 0; i < channelList.length; i++) {
+                channels[i] = new ChannelSpec(channelList[i]);
+            }
+            scanSettings.channels = channels;
+            message = "Started GScan for social channels";
+        } else {
+            scanSettings.band = band;
+            message = "Started Gscan for both band without DFS channel";
+        }
+        mGScanR = new WifiGScanReceiver(
+                this, scanSettings, mIntervalMillis, mAlarmManager, mPIGScan);
+        registerReceiver(mGScanR, new IntentFilter(sGScanAction));
+        Log.d(TAG, "Setting Gscan alarm. Interval: " + mIntervalMillis);
+        mGScanR.scheduleGscan();
+        mBtnStart.setEnabled(false);
+        mRadioGroup.setFocusable(false);
+        mTextView.setText(message);
+    }
+
+    private void stopGScan() {
+        if (mGScanR != null) {
+            unregisterReceiver(mGScanR);
+            mGScanR.cancelGScan();
+            mGScanR = null;
+            mBtnStart.setEnabled(true);
+            mRadioGroup.setFocusable(true);
+            mTextView.setText("Stopped Gscan");
+        }
+    }
+
+    private void startIperfClient() {
+        // Stop any ongoing iperf sessions before starting a new instance.
+        stopIperfClient();
+        mIperfClient =
+                new IperfClient(this, mServerIP, mServerPort, mIperfBandwidth, mIperfLogFile);
+        mIperfClient.startClient();
+        mBtnStart.setEnabled(false);
+        mRadioGroup.setFocusable(false);
+        mTextView.setText("Started iperf client");
+    }
+
+    private void stopIperfClient() {
+       if (mIperfClient != null) {
+           mIperfClient.stopClient();
+           mIperfClient = null;
+           mBtnStart.setEnabled(true);
+           mRadioGroup.setFocusable(true);
+           mTextView.setText("Stopped iperf client");
+       }
+    }
+
+    private void turnScreenOn(Context context) {
+        if (mWakeLock == null) {
+            PowerManager pm = (PowerManager)context.getSystemService(Context.POWER_SERVICE);
+            mWakeLock = pm.newWakeLock(
+                    PowerManager.SCREEN_DIM_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP, TAG);
+        }
+        if (mWakeLock != null && !mWakeLock.isHeld()) {
+            Log.i(TAG, "Turning screen on");
+            mWakeLock.acquire();
+        }
+    }
+
+    private void turnScreenOff() {
+        if (mWakeLock != null && mWakeLock.isHeld()) {
+            Log.i(TAG, "Turning screen off");
+            mWakeLock.release();
+        }
+    }
+
+    private void startSettingActivity() {
+        mSettingIntent = new Intent(PMCMainActivity.this, SettingActivity.class);
+        mSettingIntent.putExtra(SETTING_SERVER_IP_KEY, mServerIP);
+        mSettingIntent.putExtra(SETTING_SERVER_PORT_KEY, mServerPort);
+        mSettingIntent.putExtra(SETTING_INTERVAL_KEY, String.valueOf(mIntervalMillis / 1000));
+        mSettingIntent.putExtra(SETTING_IPERF_BANDWIDTH_KEY, mIperfBandwidth);
+        mSettingIntent.putExtra(SETTING_IPERF_LOGFILE_KEY, mIperfLogFile);
+        this.startActivityForResult(mSettingIntent, 0);
+    }
+
+    private void setIntervalFromUser(String newValueInSeconds) {
+        if (newValueInSeconds.length() != 0 && Integer.parseInt(newValueInSeconds) >= 0) {
+            mIntervalMillis = Integer.parseInt(newValueInSeconds) * 1000;
+        }
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        // Inflate the menu; this adds items to the action bar if it is present.
+        getMenuInflater().inflate(R.menu.main, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()) {
+            case R.id.action_setting:
+                startSettingActivity();
+                return true;
+            default:
+                return super.onOptionsItemSelected(item);
+        }
+    }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+        //Retrieve data in the intent
+        if (resultCode == 0) {
+            mServerIP = data.getStringExtra(SETTING_SERVER_IP_KEY);
+            mServerPort = data.getStringExtra(SETTING_SERVER_PORT_KEY);
+            setIntervalFromUser(data.getStringExtra(SETTING_INTERVAL_KEY));
+            mIperfBandwidth = data.getStringExtra(SETTING_IPERF_BANDWIDTH_KEY);
+            mIperfLogFile = data.getStringExtra(SETTING_IPERF_LOGFILE_KEY);
+        }
+    }
+
+    class PMCReceiver extends BroadcastReceiver {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            if (intent.getAction().equals(AUTOPOWER_INTENT_STRING)) {
+                Bundle extras = intent.getExtras();
+                String key = "PowerAction";
+                if (extras != null) {
+                    if (extras.containsKey(key)) {
+                        String actionstring = extras.getString(key);
+                        Log.d(TAG, "PowerAction = " + actionstring);
+                        if (actionstring.equalsIgnoreCase("StartConnectivityScan")) {
+                            startConnectivityScan();
+                        } else if (actionstring.equalsIgnoreCase("StopConnectivityScan")) {
+                            stopConnectivityScan();
+                        } else if (actionstring.equalsIgnoreCase("Download1KB")) {
+                            startDownloadFile("1kb.txt");
+                        } else if (actionstring.equalsIgnoreCase("Download10KB")) {
+                            startDownloadFile("10kb.txt");
+                        } else if (actionstring.equalsIgnoreCase("Download100KB")) {
+                            startDownloadFile("100kb.txt");
+                        } else if (actionstring.equalsIgnoreCase("Download1MB")) {
+                            startDownloadFile("1mb.txt");
+                        } else if (actionstring.equalsIgnoreCase("StopDownload")) {
+                            stopDownloadFile();
+                        } else if (actionstring.equalsIgnoreCase("StartGScanChannel")) {
+                            Integer[] channelList = {2412, 2437, 2462};
+                            startGscan(WifiScanner.WIFI_BAND_UNSPECIFIED, channelList);
+                        } else if (actionstring.equalsIgnoreCase("StartGScanBand")) {
+                            startGscan(WifiScanner.WIFI_BAND_BOTH, null);
+                        } else if (actionstring.equalsIgnoreCase("StopGScan")) {
+                            stopGScan();
+                        } else if (actionstring.equalsIgnoreCase("GetDownloadRate")) {
+                            if (mDR != null) {
+                                String dataRateString = "Data Rate: "
+                                        + Integer.toString(mDR.getDownloadRate()) + " bytes/sec";
+                                this.setResultData(dataRateString);
+                            } else {
+                                this.setResultData("No download running");
+                            }
+                        } else if (actionstring.equalsIgnoreCase("StartIperfClient")) {
+                            startIperfClient();
+                        } else if (actionstring.equalsIgnoreCase("StopIperfClient")) {
+                            stopIperfClient();
+                        } else if (actionstring.equalsIgnoreCase("TurnScreenOn")) {
+                            turnScreenOn(context);
+                        } else if (actionstring.equalsIgnoreCase("TurnScreenOff")) {
+                            turnScreenOff();
+                        }
+                        intent.removeExtra(key);
+                    }
+                }
+            } else if (intent.getAction().equals(SETPARAMS_INTENT_STRING)) {
+                Bundle extras = intent.getExtras();
+                if (extras != null) {
+                    if (extras.containsKey(SETTING_INTERVAL_KEY)) {
+                        setIntervalFromUser(extras.getString(SETTING_INTERVAL_KEY));
+                    }
+                    if (extras.containsKey(SETTING_SERVER_IP_KEY)) {
+                        mServerIP = extras.getString(SETTING_SERVER_IP_KEY);
+                    }
+                    if (extras.containsKey(SETTING_SERVER_PORT_KEY)) {
+                        mServerPort = extras.getString(SETTING_SERVER_PORT_KEY);
+                    }
+                    if (extras.containsKey(SETTING_IPERF_BANDWIDTH_KEY)) {
+                        mIperfBandwidth = extras.getString(SETTING_IPERF_BANDWIDTH_KEY);
+                    }
+                    if (extras.containsKey(SETTING_IPERF_LOGFILE_KEY)) {
+                        mIperfLogFile = extras.getString(SETTING_IPERF_LOGFILE_KEY);
+                    }
+                }
+            }
+        }
+    }
+}
diff --git a/PMC/src/com/android/pmc/SettingActivity.java b/PMC/src/com/android/pmc/SettingActivity.java
new file mode 100644
index 0000000..4b95577
--- /dev/null
+++ b/PMC/src/com/android/pmc/SettingActivity.java
@@ -0,0 +1,47 @@
+package com.android.pmc;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.os.Bundle;
+import android.widget.EditText;
+
+public class SettingActivity extends Activity {
+
+    EditText mServerIP;
+    EditText mServerPort;
+    EditText mInterval;
+    EditText mIperfBandwidth;
+    EditText mIperfLogfile;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_setting);
+        mServerIP = (EditText) findViewById(R.id.server_iptext);
+        mServerPort = (EditText) findViewById(R.id.server_porttext);
+        mInterval = (EditText) findViewById(R.id.intervaltext);
+        mIperfBandwidth = (EditText) findViewById(R.id.iperf_bandwidthtext);
+        mIperfLogfile = (EditText) findViewById(R.id.iperf_logfiletext);
+        // Populate the fields with the current values passed from PMCMainActivity.
+        Intent intent = this.getIntent();
+        mServerIP.setText(intent.getStringExtra(PMCMainActivity.SETTING_SERVER_IP_KEY));
+        mServerPort.setText(intent.getStringExtra(PMCMainActivity.SETTING_SERVER_PORT_KEY));
+        mInterval.setText(intent.getStringExtra(PMCMainActivity.SETTING_INTERVAL_KEY));
+        mIperfBandwidth.setText(intent.getStringExtra(PMCMainActivity.SETTING_IPERF_BANDWIDTH_KEY));
+        mIperfLogfile.setText(intent.getStringExtra(PMCMainActivity.SETTING_IPERF_LOGFILE_KEY));
+    }
+
+    @Override
+    public void onBackPressed() {
+        Intent intent = new Intent();
+        intent.putExtra(PMCMainActivity.SETTING_SERVER_IP_KEY, mServerIP.getText().toString());
+        intent.putExtra(PMCMainActivity.SETTING_SERVER_PORT_KEY, mServerPort.getText().toString());
+        intent.putExtra(PMCMainActivity.SETTING_INTERVAL_KEY, mInterval.getText().toString());
+        intent.putExtra(PMCMainActivity.SETTING_IPERF_BANDWIDTH_KEY,
+                mIperfBandwidth.getText().toString());
+        intent.putExtra(PMCMainActivity.SETTING_IPERF_LOGFILE_KEY,
+                mIperfLogfile.getText().toString());
+        setResult(0, intent); //The data you want to send back
+        finish();
+    }
+}
diff --git a/PMC/src/com/android/pmc/WifiConnScanReceiver.java b/PMC/src/com/android/pmc/WifiConnScanReceiver.java
new file mode 100644
index 0000000..15aeb11
--- /dev/null
+++ b/PMC/src/com/android/pmc/WifiConnScanReceiver.java
@@ -0,0 +1,149 @@
+package com.android.pmc;
+
+import android.app.AlarmManager;
+import android.app.PendingIntent;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.net.wifi.WifiManager;
+import android.os.AsyncTask;
+import android.os.PowerManager;
+import android.os.SystemClock;
+import android.util.Log;
+
+/**
+ * Call wifi scan whenever an alarm is received.
+ */
+public class WifiConnScanReceiver extends BroadcastReceiver {
+    int mScanCount = 0;
+    ConnectvityScanTask mConnScanTask;
+    PMCMainActivity mPMCMainActivity;
+    private WifiManager mWifiManager;
+    private Context mContext;
+    private PowerManager.WakeLock mWakeLock;
+    private int mAlarmInterval;
+    private AlarmManager mAlarmManager;
+    private PendingIntent mAlarmIntent;
+
+    public WifiConnScanReceiver(PMCMainActivity activity, int interval, AlarmManager alarmManager,
+                                PendingIntent alarmIntent) {
+        mPMCMainActivity = activity;
+        mScanCount = 0;
+        mAlarmInterval = interval;
+        mAlarmManager = alarmManager;
+        mAlarmIntent = alarmIntent;
+    }
+
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        if (mConnScanTask != null && mConnScanTask.getStatus() != AsyncTask.Status.FINISHED) {
+            Log.e(PMCMainActivity.TAG, "Previous connection scan still running.");
+            try {
+                mConnScanTask.get();
+            } catch (Exception e) {
+                Log.e(PMCMainActivity.TAG, "Connection scan cancelled.");
+            }
+        } else {
+            mContext = context;
+            PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
+            mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WIFITEST");
+            // Acquire the lock
+            mWakeLock.acquire();
+            mWifiManager = (WifiManager) context.getApplicationContext()
+                    .getSystemService(Context.WIFI_SERVICE);
+            Log.i(PMCMainActivity.TAG, "Starting Connectivity Scan Task");
+            mConnScanTask = new ConnectvityScanTask();
+            mConnScanTask.execute();
+        }
+        scheduleConnScan();
+    }
+
+    /**
+     * Schedule the next connectivity scan.
+     */
+    public void scheduleConnScan() {
+        Log.i(PMCMainActivity.TAG, "Scheduling the next conn scan after " + mAlarmInterval);
+        mAlarmManager.setAndAllowWhileIdle(AlarmManager.ELAPSED_REALTIME_WAKEUP,
+                SystemClock.elapsedRealtime() + mAlarmInterval, mAlarmIntent);
+    }
+
+    /**
+     * Cancel the connectivity scans.
+     */
+    public void cancelConnScan() {
+        mAlarmManager.cancel(mAlarmIntent);
+        if (mConnScanTask != null) mConnScanTask.cancel(true);
+    }
+
+    class ConnectvityScanTask extends AsyncTask<Integer, Integer, String> {
+        WifiScanReceiver mWifiScanReceiver;
+        Boolean mScanCompleted = false;
+
+        ConnectvityScanTask() {
+            mWifiScanReceiver = new WifiScanReceiver();
+            mContext.getApplicationContext().registerReceiver(mWifiScanReceiver,
+                    new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
+        }
+
+        @Override
+        protected String doInBackground(Integer... stime) {
+            //android.os.Debug.waitForDebugger();
+            int waitCount = 0;
+            try {
+                mScanCompleted = false;
+                mWifiManager.startScan();
+                while (!mScanCompleted) {
+                    if (waitCount >= 100) {
+                        return "Timeout, scan results avaiable action didn't triggered";
+                    } else {
+                        Thread.sleep(100);
+                        waitCount += 1;
+                    }
+                }
+                waitCount = 0;
+                mScanCount += 1;
+                Log.d(PMCMainActivity.TAG, "Number of scan completed " + mScanCount);
+                publishProgress(mScanCount);
+            } catch (Exception e) {
+                Log.e(PMCMainActivity.TAG, e.toString());
+                return e.toString();
+            }
+            return null;
+        }
+
+        @Override
+        protected void onCancelled(String result) {
+            mContext.getApplicationContext().unregisterReceiver(mWifiScanReceiver);
+            mWakeLock.release();
+        }
+
+        @Override
+        protected void onProgressUpdate(Integer... values) {
+            Log.d(PMCMainActivity.TAG, "ConnectvityScanTask onProgressUpdate updating the UI");
+            mPMCMainActivity.updateProgressStatus("Total Connectivity scan completed :: "
+                    + Integer.toString(values[0].intValue()));
+        }
+
+        @Override
+        protected void onPostExecute(String error) {
+            if (error != null) {
+                Log.e(PMCMainActivity.TAG, error);
+                mPMCMainActivity.updateProgressStatus(error);
+            }
+            mContext.getApplicationContext().unregisterReceiver(mWifiScanReceiver);
+            mWakeLock.release();
+        }
+
+        class WifiScanReceiver extends BroadcastReceiver {
+            @Override
+            public void onReceive(Context c, Intent intent) {
+                String action = intent.getAction();
+                if (action.equals(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION)) {
+                    Log.d(PMCMainActivity.TAG, "Wifi connection scan finished, results available.");
+                    mScanCompleted = true;
+                }
+            }
+        }
+    }
+}
diff --git a/PMC/src/com/android/pmc/WifiDownloadReceiver.java b/PMC/src/com/android/pmc/WifiDownloadReceiver.java
new file mode 100644
index 0000000..a8a7d9a
--- /dev/null
+++ b/PMC/src/com/android/pmc/WifiDownloadReceiver.java
@@ -0,0 +1,185 @@
+package com.android.pmc;
+
+import android.app.AlarmManager;
+import android.app.PendingIntent;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.os.AsyncTask;
+import android.os.PowerManager;
+import android.os.SystemClock;
+import android.util.Log;
+
+import java.io.InputStream;
+import java.net.HttpURLConnection;
+import java.net.URL;
+/**
+ * Call wifi Download data whenever an alarm is received.
+ */
+public class WifiDownloadReceiver extends BroadcastReceiver {
+    private static final int DOWNLOAD_BUFFER_SIZE = 1024 * 4;
+
+    DownloadTask mDownloadTask;
+    PMCMainActivity mPMCMainActivity;
+    int mFileCount;
+    int mBytesCount;
+    long mDownloadStartTime;
+    String mDownloadURL;
+    private Context mContext;
+    private PowerManager.WakeLock mWakeLock;
+    private int mAlarmInterval;
+    private AlarmManager mAlarmManager;
+    private PendingIntent mAlarmIntent;
+
+    public WifiDownloadReceiver(PMCMainActivity activity, String url, int interval,
+                                AlarmManager alarmManager, PendingIntent alarmIntent) {
+        mPMCMainActivity = activity;
+        mDownloadURL = url;
+        mFileCount = 0;
+        mBytesCount = 0;
+        mDownloadStartTime = -1;
+        mAlarmInterval = interval;
+        mAlarmManager = alarmManager;
+        mAlarmIntent = alarmIntent;
+    }
+
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        if (mDownloadTask != null && mDownloadTask.getStatus() != AsyncTask.Status.FINISHED) {
+            Log.e(PMCMainActivity.TAG, "Previous download still running.");
+            try {
+                mDownloadTask.get();
+            } catch (Exception e) {
+                Log.e(PMCMainActivity.TAG, "Download cancelled.");
+            }
+        } else {
+            mContext = context;
+            PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
+            mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WIFITEST");
+            // Acquire the lock
+            mWakeLock.acquire();
+            Log.i(PMCMainActivity.TAG, "Starting Download Task");
+            mDownloadTask = new DownloadTask();
+            mDownloadTask.execute(mDownloadURL);
+        }
+        scheduleDownload();
+    }
+
+    /**
+     * Schedule the next download.
+     */
+    public void scheduleDownload() {
+        if (mDownloadStartTime == -1) {
+            // Note down the start of all download activity
+            mDownloadStartTime = System.currentTimeMillis();
+        }
+        Log.i(PMCMainActivity.TAG, "Scheduling the next download after " + mAlarmInterval);
+        mAlarmManager.setAndAllowWhileIdle(AlarmManager.ELAPSED_REALTIME_WAKEUP,
+                SystemClock.elapsedRealtime() + mAlarmInterval, mAlarmIntent);
+    }
+
+    /**
+     * Cancel the downloads.
+     */
+    public void cancelDownload() {
+        mAlarmManager.cancel(mAlarmIntent);
+        if (mDownloadTask != null) mDownloadTask.cancel(true);
+    }
+
+    /**
+     * Returns an approximate data rate at which we're downloading the files.
+     * @return
+     */
+    public int getDownloadRate() {
+        long durationInMilliSeconds = (System.currentTimeMillis() - mDownloadStartTime);
+        int durationInSeconds = (int) (durationInMilliSeconds / 1000);
+        return (mBytesCount / durationInSeconds);
+    }
+
+    class DownloadTask extends AsyncTask<String, Integer, String> {
+        @Override
+        protected String doInBackground(String... sUrl) {
+            //android.os.Debug.waitForDebugger();
+            Log.d(PMCMainActivity.TAG, "Starting background task for downloading file");
+            HttpURLConnection connection = null;
+            try {
+                URL url = new URL(sUrl[0]);
+                connection = (HttpURLConnection) url.openConnection();
+                connection.connect();
+                // expect HTTP 200 OK, so we don't mistakenly save error report
+                // instead of the file
+                if (connection.getResponseCode() != HttpURLConnection.HTTP_OK) {
+                    return "Server returned HTTP " + connection.getResponseCode()
+                            + " " + connection.getResponseMessage();
+                }
+                // this will be useful to display download percentage
+                // might be -1: server did not report the length
+                int fileLength = connection.getContentLength();
+                int bytesRead = downloadFile(connection);
+                if (fileLength != bytesRead) {
+                    return "Expected file of size " + fileLength + " but only received "
+                            + bytesRead;
+                }
+                Log.d(PMCMainActivity.TAG, "Downloaded file size " + fileLength);
+                mFileCount += 1;
+                mBytesCount += fileLength;
+                publishProgress(mFileCount, getDownloadRate());
+                Thread.sleep(10000);
+            } catch (Exception e) {
+                Log.e(PMCMainActivity.TAG, e.toString());
+                return e.toString();
+            } finally {
+                if (connection != null) {
+                    connection.disconnect();
+                }
+            }
+            return null;
+        }
+
+        @Override
+        protected void onCancelled(String result) {
+            mWakeLock.release();
+        }
+
+        @Override
+        protected void onProgressUpdate(Integer... values) {
+            Log.d(PMCMainActivity.TAG, "DownloadTask onProgressUpdate updating the UI");
+            mPMCMainActivity.updateProgressStatus("Total file downloaded :: "
+                    + values[0].toString() + ", Data rate :: "
+                    + values[1].toString() + " bytes/sec");
+        }
+
+        @Override
+        protected void onPostExecute(String error) {
+            if (error != null) {
+                Log.e(PMCMainActivity.TAG, error);
+                mPMCMainActivity.updateProgressStatus(error);
+            }
+            mWakeLock.release();
+        }
+
+        private int downloadFile(HttpURLConnection connection) {
+            if (connection == null) return -1;
+            int totalBytesRead = 0;
+            InputStream inputStream = null;
+            // Just read out the input file, not saving it anywhere in the device
+            try {
+                inputStream = connection.getInputStream();
+                int bytesRead = -1;
+                byte[] buffer = new byte[DOWNLOAD_BUFFER_SIZE];
+                while ((bytesRead = inputStream.read(buffer)) != -1) {
+                    totalBytesRead += bytesRead;
+                }
+            } catch (Exception e) {
+                Log.e(PMCMainActivity.TAG, "Downloaded failed");
+            } finally {
+                try {
+                    if (inputStream != null) inputStream.close();
+                } catch (Exception e) {
+                    Log.e(PMCMainActivity.TAG, "Downloaded close failed");
+                }
+            }
+            return totalBytesRead;
+        }
+    }
+}
diff --git a/PMC/src/com/android/pmc/WifiGScanReceiver.java b/PMC/src/com/android/pmc/WifiGScanReceiver.java
new file mode 100644
index 0000000..e865364
--- /dev/null
+++ b/PMC/src/com/android/pmc/WifiGScanReceiver.java
@@ -0,0 +1,175 @@
+package com.android.pmc;
+
+import android.app.AlarmManager;
+import android.app.PendingIntent;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.net.wifi.ScanResult;
+import android.net.wifi.WifiManager;
+import android.net.wifi.WifiScanner;
+import android.net.wifi.WifiScanner.ScanData;
+import android.net.wifi.WifiScanner.ScanSettings;
+import android.os.AsyncTask;
+import android.os.PowerManager;
+import android.os.SystemClock;
+import android.util.Log;
+
+/**
+ * Call wifi Gscan whenever an alarm is received.
+ */
+public class WifiGScanReceiver extends BroadcastReceiver {
+    int mScanCount = 0;
+    GScanTask mGScanTask;
+    PMCMainActivity mPMCMainActivity;
+    private WifiManager mWifiManager;
+    private Context mContext;
+    private PowerManager.WakeLock mWakeLock;
+    private WifiScanner mScan;
+    private ScanSettings mScanSettings;
+    private int mAlarmInterval;
+    private AlarmManager mAlarmManager;
+    private PendingIntent mAlarmIntent;
+
+
+    public WifiGScanReceiver(PMCMainActivity activity, ScanSettings settings, int interval,
+                             AlarmManager alarmManager, PendingIntent alarmIntent) {
+        mPMCMainActivity = activity;
+        mScanSettings = settings;
+        mScanCount = 0;
+        mAlarmInterval = interval;
+        mAlarmManager = alarmManager;
+        mAlarmIntent = alarmIntent;
+    }
+
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        if (mGScanTask != null && mGScanTask.getStatus() != AsyncTask.Status.FINISHED) {
+            Log.e(PMCMainActivity.TAG, "Previous Gscan still running.");
+            try {
+                mGScanTask.get();
+            } catch (Exception e) {
+                Log.e(PMCMainActivity.TAG, "Gscan cancelled.");
+            }
+        } else {
+            mContext = context;
+            PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
+            mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WIFITEST");
+            // Acquire the lock
+            mWakeLock.acquire();
+            mScan = (WifiScanner) context.getSystemService(Context.WIFI_SCANNING_SERVICE);
+            Log.i(PMCMainActivity.TAG, "Starting GScan Task");
+            mGScanTask = new GScanTask();
+            mGScanTask.execute(mScanSettings);
+        }
+        scheduleGscan();
+    }
+
+    /**
+     * Schedule the next Gscan.
+     */
+    public void scheduleGscan() {
+        Log.i(PMCMainActivity.TAG, "Scheduling the next gscan after " + mAlarmInterval);
+        mAlarmManager.setAndAllowWhileIdle(AlarmManager.ELAPSED_REALTIME_WAKEUP,
+                SystemClock.elapsedRealtime() + mAlarmInterval, mAlarmIntent);
+    }
+
+    /**
+     * Cancel the Gscans.
+     */
+    public void cancelGScan() {
+        mAlarmManager.cancel(mAlarmIntent);
+        if (mGScanTask != null) mGScanTask.cancel(true);
+    }
+
+    class GScanTask extends AsyncTask<ScanSettings, Integer, String> {
+        WifiScanListener mWifiScanListener;
+        Boolean mScanCompleted = false;
+
+        GScanTask() {
+            mWifiScanListener = new WifiScanListener();
+        }
+
+        @Override
+        protected String doInBackground(ScanSettings... settings) {
+            //android.os.Debug.waitForDebugger();
+            Log.d(PMCMainActivity.TAG, "Starting background task for gscan with channel");
+            int waitCount = 0;
+            try {
+                mScanCompleted = false;
+                mScan.startScan(settings[0], mWifiScanListener);
+                while (!mScanCompleted) {
+                    if (waitCount >= 100) {
+                        return "Timeout, scan results avaiable action didn't triggered";
+                    } else {
+                        Thread.sleep(100);
+                        waitCount += 1;
+                    }
+                }
+                mScanCount += 1;
+                waitCount = 0;
+                Log.d(PMCMainActivity.TAG, "Number of scan completed " + mScanCount);
+                publishProgress(mScanCount);
+            } catch (Exception e) {
+                Log.e(PMCMainActivity.TAG, e.toString());
+                return e.toString();
+            } finally {
+                mScan.stopScan(mWifiScanListener);
+            }
+            return null;
+        }
+
+        @Override
+        protected void onCancelled(String result) {
+            mWakeLock.release();
+        }
+
+        @Override
+        protected void onProgressUpdate(Integer... values) {
+            Log.d(PMCMainActivity.TAG, "GScanTask onProgressUpdate updating the UI");
+            mPMCMainActivity.updateProgressStatus("Total Gscan completed :: "
+                    + Integer.toString(values[0].intValue()));
+        }
+
+        @Override
+        protected void onPostExecute(String error) {
+            if (error != null) {
+                Log.e(PMCMainActivity.TAG, error);
+                mPMCMainActivity.updateProgressStatus(error);
+            }
+            mWakeLock.release();
+        }
+
+        private class WifiScanListener implements WifiScanner.ScanListener {
+            WifiScanListener() {
+
+            }
+
+            @Override
+            public void onSuccess() {
+                Log.d(PMCMainActivity.TAG, "onSuccess called");
+            }
+
+            @Override
+            public void onFailure(int reason, String description) {
+                Log.d(PMCMainActivity.TAG, "onFailure called");
+            }
+
+            @Override
+            public void onPeriodChanged(int periodInMs) {
+                Log.d(PMCMainActivity.TAG, "onPeriodChanged called");
+            }
+
+            @Override
+            public void onFullResult(ScanResult fullScanResult) {
+                Log.d(PMCMainActivity.TAG, "onFullResult called");
+            }
+
+            @Override
+            public void onResults(ScanData[] results) {
+                Log.d(PMCMainActivity.TAG, "onResult WifiScanListener called");
+                mScanCompleted = true;
+            }
+        }
+    }
+}
-- 
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