@Override
public void frameReceived(final FrameEvent e) {
try {
// with EMI1 frames, there is the possibility we receive some left-over Get-Value responses
// from BCU switching during link setup, silently discard them
final byte[] emi1 = e.getFrameBytes();
if (emi1 != null && BcuSwitcher.isEmi1GetValue(emi1[0] & 0xff)) return;
final CEMI cemi = onReceive(e);
if (cemi instanceof CEMIDevMgmt) {
// XXX check .con correctly (required for setting cEMI link layer mode)
final int mc = cemi.getMessageCode();
if (mc == CEMIDevMgmt.MC_PROPWRITE_CON) {
final CEMIDevMgmt f = (CEMIDevMgmt) cemi;
if (f.isNegativeResponse())
logger.error("L-DM negative response, " + f.getErrorMessage());
}
}
// from this point on, we are only dealing with L_Data
if (!(cemi instanceof CEMILData)) return;
final CEMILData f = (CEMILData) cemi;
final int mc = f.getMessageCode();
if (mc == CEMILData.MC_LDATA_IND) {
addEvent(l -> l.indication(new FrameEvent(source, f)));
logger.debug("indication {}", f.toString());
} else if (mc == CEMILData.MC_LDATA_CON) {
addEvent(l -> l.confirmation(new FrameEvent(source, f)));
logger.debug("confirmation of {}", f.getDestination());
} else
logger.warn("unspecified frame event - ignored, msg code = 0x" + Integer.toHexString(mc));
} catch (final KNXFormatException | RuntimeException ex) {
logger.warn(
"received unspecified frame {}", DataUnitBuilder.toHex(e.getFrameBytes(), ""), ex);
}
}
@Override
public void send(final CEMILData msg, final boolean waitForCon)
throws KNXTimeoutException, KNXLinkClosedException {
if (closed) throw new KNXLinkClosedException("link closed");
if (cEMI && !sendCEmiAsByteArray) {
final CEMILData adjusted = adjustMsgType(msg);
addMediumInfo(adjusted);
onSend(adjusted, waitForCon);
return;
}
onSend(msg.getDestination(), createEmi(msg), waitForCon);
}
/**
* {@inheritDoc}<br>
* If a maximum size is set and the queue already reached maximum size, if {@link #isOverwrite()}
* evaluates to<br>
* - <code>true</code>, <code>frame</code> will replace the oldest inserted frame<br>
* - <code>false</code>, <code>frame</code> is ignored and not queued.
*/
public synchronized void setFrame(final CEMILData frame) {
if (!frame.getDestination().equals(getKey()))
throw new KNXIllegalArgumentException("frame key differs from this key");
if (!max) ensureCapacity();
else if (!overwrite && size == timestamps.length) return;
final CEMILData[] c = (CEMILData[]) value;
// notify on first time queue fills up
final boolean notifyListener = max && size == c.length - 1;
resetTimestamp();
c[next] = frame;
timestamps[next] = getTimestamp();
++next;
next %= c.length;
if (size < c.length) ++size;
if (notifyListener) fireQueueFilled();
}