add xbee_wrapper that uses the 'packet' interface

node/main/xbee_wrapper.cpp

@@ -0,0 +1,30 @@
+#include "xbee_wrapper.h"
+
+
+XBeeWrapper::XBeeWrapper(){ xbee = XBee(); };
+
+
+void XBeeWrapper::begin(unsigned long baud){
+	xbee.setSerial(Serial1);
+	Serial1.begin(baud);
+};
+
+
+uint8_t XBeeWrapper::receive(Packet& pkt){
+	xbee.readPacket();
+
+	if( !xbee.getResponse().isAvailable() )
+		return XBWRCV_NONE;
+
+	if( xbee.getResponse().getApiId() != ZB_RX_RESPONSE )
+		return XBWRCV_NONE;
+
+	Rx64Response res;
+	xbee.getResponse().getZBRxResponse(res);
+
+	// extract data and propagate error
+	if( !pkt.read(res.getData(), res.getDataLength()) )
+		return XBWRCV_ERROR;
+
+	return XBWRCV_OK;
+};

node/main/xbee_wrapper.h

@@ -0,0 +1,31 @@
+#ifndef _WBEE_WRAPPER_H_
+	#define _WBEE_WRAPPER_H_
+
+	#include <Wire.h>
+	#include <XBee.h>
+	#include "protocol.h"
+	#include "packet.h"
+
+	#define XBWRCV_OK    0
+	#define XBWRCV_NONE  1
+	#define XBWRCV_ERROR 2
+
+
+	class XBeeWrapper{
+		private:
+			XBee xbee;
+
+		public:
+			XBeeWrapper();
+
+			// initialises the XBee interface
+			void begin(unsigned long baud);
+
+			// tries to extract a received packet
+			uint8_t receive(Packet& pkt);
+
+	};
+
+
+
+#endif