diff --git a/.idea/misc.xml b/.idea/misc.xml
index 44bc9b2..3d21ecd 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -37,7 +37,7 @@
     <ConfirmationsSetting value="0" id="Add" />
     <ConfirmationsSetting value="0" id="Remove" />
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="true" assert-keyword="true" jdk-15="true" project-jdk-name="JDK" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" default="true" assert-keyword="true" jdk-15="true" project-jdk-name="JDK" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">
diff --git a/Application/src/main/java/com/example/android/bluetoothlegatt/BluetoothLeService.java b/Application/src/main/java/com/example/android/bluetoothlegatt/BluetoothLeService.java
index 694faaf..54e77e9 100644
--- a/Application/src/main/java/com/example/android/bluetoothlegatt/BluetoothLeService.java
+++ b/Application/src/main/java/com/example/android/bluetoothlegatt/BluetoothLeService.java
@@ -63,8 +63,10 @@ public class BluetoothLeService extends Service {
     public final static String EXTRA_DATA =
             "com.example.bluetooth.le.EXTRA_DATA";
 
+    /* TODO
     public final static UUID UUID_HEART_RATE_MEASUREMENT =
             UUID.fromString(SampleGattAttributes.HEART_RATE_MEASUREMENT);
+            */
 
     // Implements callback methods for GATT events that the app cares about.  For example,
     // connection change and services discovered.
@@ -123,6 +125,7 @@ public class BluetoothLeService extends Service {
                                  final BluetoothGattCharacteristic characteristic) {
         final Intent intent = new Intent(action);
 
+        /* TODO
         // This is special handling for the Heart Rate Measurement profile.  Data parsing is
         // carried out as per profile specifications:
         // http://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurement.xml
@@ -140,6 +143,7 @@ public class BluetoothLeService extends Service {
             Log.d(TAG, String.format("Received heart rate: %d", heartRate));
             intent.putExtra(EXTRA_DATA, String.valueOf(heartRate));
         } else {
+        */
             // For all other profiles, writes the data formatted in HEX.
             final byte[] data = characteristic.getValue();
             if (data != null && data.length > 0) {
@@ -148,7 +152,9 @@ public class BluetoothLeService extends Service {
                     stringBuilder.append(String.format("%02X ", byteChar));
                 intent.putExtra(EXTRA_DATA, new String(data) + "\n" + stringBuilder.toString());
             }
+        /* TODO
         }
+        */
         sendBroadcast(intent);
     }
 
@@ -296,6 +302,7 @@ public class BluetoothLeService extends Service {
         }
         mBluetoothGatt.setCharacteristicNotification(characteristic, enabled);
 
+        /* TODO
         // This is specific to Heart Rate Measurement.
         if (UUID_HEART_RATE_MEASUREMENT.equals(characteristic.getUuid())) {
             BluetoothGattDescriptor descriptor = characteristic.getDescriptor(
@@ -303,6 +310,7 @@ public class BluetoothLeService extends Service {
             descriptor.setValue(BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE);
             mBluetoothGatt.writeDescriptor(descriptor);
         }
+        */
     }
 
     /**
diff --git a/Application/src/main/java/com/example/android/bluetoothlegatt/SampleGattAttributes.java b/Application/src/main/java/com/example/android/bluetoothlegatt/SampleGattAttributes.java
index e8db74c..b2eb58b 100644
--- a/Application/src/main/java/com/example/android/bluetoothlegatt/SampleGattAttributes.java
+++ b/Application/src/main/java/com/example/android/bluetoothlegatt/SampleGattAttributes.java
@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2013 The Android Open Source Project
+ * Copyright (C) 2017 Louis-Guillaume Dubois
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -23,16 +24,26 @@ import java.util.HashMap;
  */
 public class SampleGattAttributes {
     private static HashMap<String, String> attributes = new HashMap();
-    public static String HEART_RATE_MEASUREMENT = "00002a37-0000-1000-8000-00805f9b34fb";
-    public static String CLIENT_CHARACTERISTIC_CONFIG = "00002902-0000-1000-8000-00805f9b34fb";
 
     static {
         // Sample Services.
-        attributes.put("0000180d-0000-1000-8000-00805f9b34fb", "Heart Rate Service");
-        attributes.put("0000180a-0000-1000-8000-00805f9b34fb", "Device Information Service");
+        attributes.put("0000180a-0000-1000-8000-00805f9b34fb", "Device Information");
+        attributes.put("00001801-0000-1000-8000-00805f9b34fb", "Generic Attribute");
+        attributes.put("00001800-0000-1000-8000-00805f9b34fb", "Generic Access");
+        attributes.put("0000180f-0000-1000-8000-00805f9b34fb", "Battery Service");
+
+        attributes.put("11223344-5566-7788-9900-aabbccddeeff", "Private Service");
+
+
         // Sample Characteristics.
-        attributes.put(HEART_RATE_MEASUREMENT, "Heart Rate Measurement");
-        attributes.put("00002a29-0000-1000-8000-00805f9b34fb", "Manufacturer Name String");
+        attributes.put("00002a19-0000-1000-8000-00805f9b34fb", "Battery Level");
+        attributes.put("00002a00-0000-1000-8000-00805f9b34fb", "Device Name");
+        attributes.put("00002a01-0000-1000-8000-00805f9b34fb", "Appearance");
+        attributes.put("00002a04-0000-1000-8000-00805f9b34fb", "Peripheral Preferred Connection Parameters");
+        attributes.put("00002a29-0000-1000-8000-00805f9b34fb", "Manufacturer Name");
+
+        attributes.put("01020304-0506-0708-0900-0a0b0c0d0e0f", "5-byte r char.");
+        attributes.put("ff020304-0506-0708-0900-0a0b0c0d0e0f", "3-byte rw notif. char.");
     }
 
     public static String lookup(String uuid, String defaultName) {
diff --git a/Application/src/main/res/values/base-strings.xml b/Application/src/main/res/values/base-strings.xml
index 8b742b7..62b5ed0 100644
--- a/Application/src/main/res/values/base-strings.xml
+++ b/Application/src/main/res/values/base-strings.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
  Copyright 2013 The Android Open Source Project
+ Copyright 2017 Louis-Guillaume Dubois
 
  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
@@ -16,7 +17,7 @@
 -->
 
 <resources>
-    <string name="app_name">BluetoothLeGatt</string>
+    <string name="app_name">Client BLE</string>
     <string name="intro_message">
         <![CDATA[
         
diff --git a/TODO.md b/TODO.md
new file mode 100644
index 0000000..ffc5946
--- /dev/null
+++ b/TODO.md
@@ -0,0 +1,9 @@
+À FAIRE
+=======
+
+Par ordre décroissant d’urgence :
+
+- prise en charge de l’écriture des caractéristiques ;
+- prise en charge des notifications des caractéristiques ;
+- filtrage des services et caractéristiques dans l’activité « DeviceControl » ;
+- filtrage des appareils avec notre service dans l’activité « DeviceScan ».
\ No newline at end of file