Start()</code> method during the <code>setup()</code> method to enable radio
frequency communications and start listening for Bluetooth connections:</p>

<pre>
ADK L;
void setup() {
 L.adkInit();
 L.btStart();
}
...
void btStart(){
    uint8_t i, dlci;
    int f;

    L.btEnable(adkBtConnectionRequest, adkBtLinkKeyRequest, adkBtLinkKeyCreated,
               adkBtPinRequest, NULL);

    dlci = L.btRfcommReserveDlci(RFCOMM_DLCI_NEED_EVEN);

    if(!dlci) dbgPrintf("BTADK: failed to allocate DLCI\n");
    els