Release 0.2.1

=============

Features
~~~~~~~~

- Add the 'packet' characteristic to the DFUService. This helps mimic the
  layout of the actual DFU service in the dfu-bootloader. Without this, some
  FOTA clients might get confused as service definitions change after handing
  control over to the bootloader.

- Initialize DFUService's controlPoint characteristic to have the value
  0xFFFF. This helps distinguish an application from the dfu-bootloader; since
  both provide the DFU-Service.

Bugfixes
~~~~~~~~

None.

Compatibility
~~~~~~~~~~~~~

No APIs have changed between 0.2.0 and this release. Applications need not be

services/DFUService.h

@@ -43,6 +43,7 @@ public:
     DFUService(BLEDevice &_ble, ResetPrepare_t _handoverCallback = NULL) :
         ble(_ble),
         controlBytes(),
+        packetBytes(),
         controlPoint(DFUServiceControlCharacteristicUUID, controlBytes, SIZEOF_CONTROL_BYTES, SIZEOF_CONTROL_BYTES,
                      GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY),
         packet(DFUServicePacketCharacteristicUUID, packetBytes, SIZEOF_PACKET_BYTES, SIZEOF_PACKET_BYTES,
@@ -52,6 +53,11 @@ public:
             return;
         }
 
+        /* Set an initial value for control bytes so that the application's DFUService can
+         * be distinguished from the real DFU service provided by the bootloader. */
+        controlBytes[0] = 0xFF;
+        controlBytes[1] = 0xFF;
+
         GattCharacteristic *dfuChars[] = {&controlPoint, &packet};
         GattService         dfuService(DFUServiceUUID, dfuChars, sizeof(dfuChars) / sizeof(GattCharacteristic *));
 
@@ -86,7 +92,7 @@ private:
     static const unsigned SIZEOF_CONTROL_BYTES = 2;
     static const unsigned SIZEOF_PACKET_BYTES  = 20;
 
-    static ResetPrepare_t  handoverCallback;  /**< application specific handover callback. */
+    static ResetPrepare_t handoverCallback;  /**< application specific handover callback. */
 
 private:
     BLEDevice          &ble;