Added a new tracking algorithm that uses TCP sockets to move the work of a processing block to a remote machine executing MATLAB Simulink.

git-svn-id: https://svn.code.sf.net/p/gnss-sdr/code/trunk@185 64b25241-fba3-4117-9849-534c7e92360d

src/algorithms/tracking/libs/jamfile.jam

@@ -7,3 +7,4 @@ obj tracking_2nd_PLL_filter	: tracking_2nd_PLL_filter.cc ;
 obj tracking_2nd_DLL_filter	: tracking_2nd_DLL_filter.cc ;
 obj correlator : correlator.cc ;
 obj cordic : cordic.cc ;
+obj tcp_communication : tcp_communication.cc ;

src/algorithms/tracking/libs/tcp_communication.cc

@@ -0,0 +1,115 @@
+/*!
+ * \file tcp_communication.h
+ * \brief Library with the definition of the TCP communication class
+ * \author David Pubill, 2011. dpubill(at)cttc.es
+ *
+ *
+ * -------------------------------------------------------------------------
+ *
+ * Copyright (C) 2010-2012  (see AUTHORS file for a list of contributors)
+ *
+ * GNSS-SDR is a software defined Global Navigation
+ *          Satellite Systems receiver
+ *
+ * This file is part of GNSS-SDR.
+ *
+ * GNSS-SDR is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * at your option) any later version.
+ *
+ * GNSS-SDR is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * -------------------------------------------------------------------------
+ */
+
+#include "tcp_packet_data.h"
+#include "tcp_communication.h"
+#include <iostream>
+#include <string>
+
+
+#define NUM_TX_VARIABLES 7
+#define NUM_RX_VARIABLES 3
+
+tcp_communication::tcp_communication() : tcp_socket_(io_service_){
+}
+
+tcp_communication::~tcp_communication(){
+}
+
+int tcp_communication::listen_tcp_connection(size_t d_port_)
+{
+	try
+	{
+		//! Specify IP type and port
+		boost::asio::ip::tcp::endpoint endpoint(boost::asio::ip::tcp::v4(), d_port_);
+		boost::asio::ip::tcp::acceptor acceptor(io_service_, endpoint);
+
+		//! Reuse the IP address for each connection
+		acceptor.set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
+
+		std::cout << "Server ready on port " << d_port_ << std::endl;
+
+		//! Listen for a connection and accept it
+		acceptor.listen(12);
+		acceptor.accept(tcp_socket_);
+
+	    std::cout << "Socket accepted on port " << d_port_ << std::endl;
+	}
+
+	catch(std::exception& e)
+	{
+	    std::cerr << "Exception: " << e.what() << std::endl;
+	}
+
+    return false;
+}
+
+void tcp_communication::send_receive_tcp_packet(boost::array<float, NUM_TX_VARIABLES> buf, tcp_packet_data *tcp_data_)
+{
+	int controlc = 0;
+	boost::array<float, NUM_RX_VARIABLES> readbuf;
+	float d_control_id_ = buf.data()[6];
+
+	try
+    {
+    	//! Send a TCP packet
+    	tcp_socket_.write_some(boost::asio::buffer(buf));
+
+    	//! Read the received TCP packet
+    	tcp_socket_.read_some(boost::asio::buffer(readbuf));
+
+    	//! Recover the variables received
+    	tcp_data_->proc_pack_code_error = readbuf.data()[0];
+    	tcp_data_->proc_pack_carr_error = readbuf.data()[1];
+
+    	//! Control. The GNSS-SDR program ends if an error in a TCP packet is detected.
+    	if (d_control_id_ != readbuf.data()[2])
+    	{
+    		throw "Packet error!";
+    	}
+    }
+
+	catch(std::exception& e)
+    	{
+    	    std::cerr << "Exception: " << e.what() << ". Please press Ctrl+C to end the program." << std::endl;
+    	    std::cin >> controlc;
+    	}
+    return;
+}
+
+void tcp_communication::close_tcp_connection(size_t d_port_)
+{
+	//! Close the TCP connection
+	tcp_socket_.close();
+	std::cout << "Socket closed on port " << d_port_ << std::endl;
+
+	return;
+}

src/algorithms/tracking/libs/tcp_communication.h

@@ -0,0 +1,54 @@
+/*!
+ * \file tcp_communication.h
+ * \brief Library with the definition of the TCP communication class
+ * \author David Pubill, 2011. dpubill(at)cttc.es
+ *
+ *
+ * -------------------------------------------------------------------------
+ *
+ * Copyright (C) 2010-2012  (see AUTHORS file for a list of contributors)
+ *
+ * GNSS-SDR is a software defined Global Navigation
+ *          Satellite Systems receiver
+ *
+ * This file is part of GNSS-SDR.
+ *
+ * GNSS-SDR is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * at your option) any later version.
+ *
+ * GNSS-SDR is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * -------------------------------------------------------------------------
+ */
+
+#ifndef TCP_COMMUNICATION_H_
+#define TCP_COMMUNICATION_H_
+
+#include <boost/asio.hpp>
+#include "tcp_packet_data.h"
+
+class tcp_communication
+{
+public:
+
+	tcp_communication();
+	~tcp_communication();
+
+	int listen_tcp_connection(size_t d_port_);
+	void send_receive_tcp_packet(boost::array<float, 7> buf, tcp_packet_data *tcp_data_);
+	void close_tcp_connection(size_t d_port_);
+
+private:
+	boost::asio::io_service io_service_;
+	boost::asio::ip::tcp::socket tcp_socket_;
+};
+
+#endif

src/algorithms/tracking/libs/tcp_packet_data.h

@@ -0,0 +1,46 @@
+/*!
+ * \file tcp_packet_data.h
+ * \brief Library with the definition of the TCP packet data class
+ * \author David Pubill, 2011. dpubill(at)cttc.es
+ *
+ *
+ * -------------------------------------------------------------------------
+ *
+ * Copyright (C) 2010-2012  (see AUTHORS file for a list of contributors)
+ *
+ * GNSS-SDR is a software defined Global Navigation
+ *          Satellite Systems receiver
+ *
+ * This file is part of GNSS-SDR.
+ *
+ * GNSS-SDR is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * at your option) any later version.
+ *
+ * GNSS-SDR is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * -------------------------------------------------------------------------
+ */
+
+#ifndef TCP_PACKET_DATA_H_
+#define TCP_PACKET_DATA_H_
+
+class tcp_packet_data
+{
+public:
+	tcp_packet_data();
+
+	float proc_pack_code_error;
+    float proc_pack_carr_error;
+
+    ~tcp_packet_data();
+};
+
+#endif