private byte readByteFromSerialBuffer() throws InterruptedException, ShieldFrameNotComplete {
if (ShieldFrameTimeout != null && ShieldFrameTimeout.isTimeout())
throw new ShieldFrameNotComplete();
isSerialBufferWaiting = true;
byte temp = serialBuffer.take();
if (ShieldFrameTimeout != null) ShieldFrameTimeout.resetTimer();
return temp;
}
