onnection allows two way communication between the ADK accessory and Android
devices.</p>

<p class="note"><strong>Note:</strong> The implementation of the ADK hardware allows the use of
other profiles and multiple connections. However, the basic communication between the ADK 2012
accessory and the Android application uses SPP.</p>

<h4 id="acc-bt-code">Accessory Bluetooth Code</h4>

<p>In order to enable Bluetooth communications, the <code>clock.ino</code> sketch for the ADK 2012
accessory calls a <code>bt