uhd: windows fixes and formatting for hammer example

1 files changed, 293 insertions, 293 deletions

diff --git a/host/examples/transport_hammer.cpp b/host/examples/transport_hammer.cpp
index 29926b615..8e588e2fb 100644
--- a/host/examples/transport_hammer.cpp
+++ b/host/examples/transport_hammer.cpp
@@ -35,29 +35,29 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
     double delay;
     size_t total_num_samps;
     double rate;
-	int step;
-	int rand_begin;
-	int rand_end;
-	size_t samp_begin;
-	size_t samp_end;
-	float ampl;
+    int step;
+    int rand_begin;
+    int rand_end;
+    size_t samp_begin;
+    size_t samp_end;
+    float ampl;
 
     //setup the program options
     po::options_description desc("Allowed options");
     desc.add_options()
         ("help", "help message")
         ("args", po::value<std::string>(&args)->default_value(""), "single uhd device address args")
-		("delay", po::value<double>(&delay)->default_value(0.0), "delay between sample jumps")
-		("step", po::value<int>(&step)->default_value(1), "delta between number of samples collected/sent")
-		("samp_begin", po::value<size_t>(&samp_begin)->default_value(1), "Beginning number of samples")
-		("samp_end", po::value<size_t>(&samp_end)->default_value(32768), "End number of samples")
+        ("delay", po::value<double>(&delay)->default_value(0.0), "delay between sample jumps")
+        ("step", po::value<int>(&step)->default_value(1), "delta between number of samples collected/sent")
+        ("samp_begin", po::value<size_t>(&samp_begin)->default_value(1), "Beginning number of samples")
+        ("samp_end", po::value<size_t>(&samp_end)->default_value(32768), "End number of samples")
         ("rate", po::value<double>(&rate)->default_value(3.125e6), "rate of incoming samples")
-		("tx", "specify to use TX samples instead of RX samples")
-		("rx", "specify to use RX samples (already default")
-		("rand_vals", "specify to continuously use random numbers of samples")
-		("rand_begin", po::value<int>(&rand_begin)->default_value(0), "specify minimum value outputted by random number generator")
-		("rand_end", po::value<int>(&rand_end)->default_value(2000), "specify maximum value outputting by random number generator")
-		("ampl", po::value<float>(&ampl)->default_value(float(0.3)), "amplitude of each sample")
+        ("tx", "specify to use TX samples instead of RX samples")
+        ("rx", "specify to use RX samples (already default")
+        ("rand_vals", "specify to continuously use random numbers of samples")
+        ("rand_begin", po::value<int>(&rand_begin)->default_value(0), "specify minimum value outputted by random number generator")
+        ("rand_end", po::value<int>(&rand_end)->default_value(2000), "specify maximum value outputting by random number generator")
+        ("ampl", po::value<float>(&ampl)->default_value(float(0.3)), "amplitude of each sample")
         ("verbose", "Enables verbosity")
     ;
     po::variables_map vm;
@@ -69,280 +69,280 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
         std::cout << boost::format("UHD Transport Hammer - %s") % desc << std::endl;
         return ~0;
     }
-	
-	bool use_tx = vm.count("tx") > 0;
-	bool rand_vals = vm.count("rand_vals") > 0;
-	bool verbose = vm.count("verbose") > 0;
-	
-	if (use_tx)
-	{
-		//create a usrp device
-		std::cout << boost::format("Creating the usrp device with: %s...") % args << std::endl;
-		uhd::usrp::multi_usrp::sptr usrp = uhd::usrp::multi_usrp::make(args);
-		std::cout << boost::format("Using Device: %s") % usrp->get_pp_string() << std::endl;
-		
-		//set the tx sample rate
-		std::cout << boost::format("Setting TX Rate: %f Msps...") % (rate/1e6) << std::endl;
-		usrp->set_tx_rate(rate);
-		std::cout << boost::format("Actual TX Rate: %f Msps...") % (usrp->get_tx_rate()/1e6) << std::endl << std::endl;
-		usrp->set_time_now(uhd::time_spec_t(0.0));
-		
-		//create a transmit streamer
-		uhd::stream_args_t stream_args("fc32"); //complex floats
-		uhd::tx_streamer::sptr tx_stream = usrp->get_tx_stream(stream_args);
-		
-		//allocate buffer with data to send
-		std::vector<std::complex<float> > buff(tx_stream->get_max_num_samps(), std::complex<float>(ampl, ampl));
-		
-		//setup metadata for the first packet
-		uhd::tx_metadata_t md;
-		md.start_of_burst = false;
-		md.end_of_burst = false;
-		md.has_time_spec = false;
-		//md.time_spec = uhd::time_spec_t(seconds_in_future);
-		
-		
-		if(rand_vals){
-			
-			srand(time(NULL));
-			
-			while(true){
-				size_t total_num_samps = (rand() % (rand_end - rand_begin)) + rand_begin;
-				size_t num_acc_samps = 0;
-				float timeout = 0;
-				
-				std::cout << "----------------------------------------" << std::endl;
-				std::cout << boost::format("About to send %u samples.") % total_num_samps << std::endl << std::endl;
-				
-				usrp->set_time_now(uhd::time_spec_t(0.0));
-				
-				while(num_acc_samps < total_num_samps){
-					size_t samps_to_send = std::min(total_num_samps - num_acc_samps, buff.size());
-					if(verbose) std::cout << boost::format("Sent %u samples.") % samps_to_send << std::endl;
-					
-					
-					//send a single packet
-					size_t num_tx_samps = tx_stream->send(&buff.front(), samps_to_send, md, timeout);
-					
-					if(num_tx_samps < samps_to_send) std::cerr << "Send timeout..." << std::endl;
-					//if(verbose) std::cout << boost::format("Sent packet: %u samples") % num_tx_samps << std::endl;
-					
-					num_acc_samps += num_tx_samps;
-				}
-				
-				md.end_of_burst   = true;
-				tx_stream->send("", 0, md);
-				
-				if(verbose) std::cout << std::endl;
-				std::cout << "Waiting for async burst ACK... " << std::endl << std::flush;
-				uhd::async_metadata_t async_md;
-				bool got_async_burst_ack = false;
-				//loop through all messages for the ACK packet (may have underflow messages in queue)
-				while (not got_async_burst_ack and usrp->get_device()->recv_async_msg(async_md, timeout)){
-					got_async_burst_ack = (async_md.event_code == uhd::async_metadata_t::EVENT_CODE_BURST_ACK);
-				}
-				std::cout << (got_async_burst_ack? "Success!" : "Failure...") << std::endl << std::endl;
-				
-				std::cout << boost::format("Successfully sent %u samples.") % total_num_samps << std::endl << "----------------------------------------" << std::endl << std::endl;
-				
-				sleep(delay);
-				
-			}
-		}
-		else{
-			
-			float timeout = 0;
-			
-			if(verbose){
-				std::cout << "About to start sending samples." << std::endl;
-				std::cout << boost::format("Samples will start at %u and end with %u with steps of %u.") % samp_begin % samp_end % step << std::endl;
-				
-				sleep(2);
-			}
-			
-			for(int i = int(samp_begin); i <= int(samp_end); i += step){
-				
-				std::cout << "----------------------------------------" << std::endl;
-				
-				usrp->set_time_now(uhd::time_spec_t(0.0));
-				
-				std::cout << boost::format("About to send %u samples.") % i << std::endl;
-				if(verbose) std::cout << std::endl;
-				
-				size_t num_acc_samps = 0; //number of accumulated samples
-				total_num_samps = i;
-				
-				while(num_acc_samps < total_num_samps){
-					size_t samps_to_send = std::min(total_num_samps - num_acc_samps, buff.size());
-					
-					if(verbose) std::cout << boost::format("Sent %u samples.") % samps_to_send << std::endl;
-					
-					//send a single packet
-					size_t num_tx_samps = tx_stream->send(
-						&buff.front(), samps_to_send, md, timeout
-					);
-					
-					if (num_tx_samps < samps_to_send) std::cerr << "Send timeout..." << std::endl;
-					
-					num_acc_samps += num_tx_samps;
-				}
-				
-				//send a mini EOB packet
-				md.end_of_burst   = true;
-				tx_stream->send("", 0, md);
-				
-				std::cout << std::endl << "Waiting for async burst ACK... " << std::endl << std::flush;
-				uhd::async_metadata_t async_md;
-				bool got_async_burst_ack = false;
-				//loop through all messages for the ACK packet (may have underflow messages in queue)
-				while (not got_async_burst_ack and usrp->get_device()->recv_async_msg(async_md, timeout)){
-					got_async_burst_ack = (async_md.event_code == uhd::async_metadata_t::EVENT_CODE_BURST_ACK);
-				}
-				std::cout << (got_async_burst_ack? "Success!" : "Failure...") << std::endl << std::endl;
-				
-				std::cout << boost::format("Successfully sent %u samples.") % i << std::endl << "----------------------------------------" << std::endl << std::endl;
-				
-				sleep(delay);
-			}
-			
-			//finished
-			std::cout << "Done!" << std::endl << std::endl;
-		}
-		
-		return 0;
-	}
-	else
-	{
-		//create a usrp device
-		std::cout << boost::format("Creating the usrp device with: %s...") % args << std::endl;
-		uhd::usrp::multi_usrp::sptr usrp = uhd::usrp::multi_usrp::make(args);
-		std::cout << boost::format("Using Device: %s") % usrp->get_pp_string() << std::endl;
-		
-		//set the rx sample rate
-		std::cout << boost::format("Setting RX Rate: %f Msps...") % (rate/1e6) << std::endl;
-		usrp->set_rx_rate(rate);
-		std::cout << boost::format("Actual RX Rate: %f Msps...") % (usrp->get_rx_rate()/1e6) << std::endl << std::endl;
-		
-
-		
-		if(rand_vals){
-			//random here
-			
-			srand(time(NULL));
-			
-			while(true){
-				total_num_samps = (rand() % (rand_end - rand_begin)) + rand_begin;
-				
-				usrp->set_time_now(uhd::time_spec_t(0.0));
-				
-				//create a receive streamer
-				uhd::stream_args_t stream_args("fc32"); //complex floats
-				uhd::rx_streamer::sptr rx_stream = usrp->get_rx_stream(stream_args);
-				
-				std::cout << std::endl << "----------------------------------------" << std::endl;
-				std::cout << boost::format("About to receive %u samples.") % total_num_samps << std::endl << std::endl;
-				
-				uhd::stream_cmd_t stream_cmd(uhd::stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_DONE);
-				stream_cmd.num_samps = total_num_samps;
-				stream_cmd.stream_now = true;
-				usrp->issue_stream_cmd(stream_cmd);
-				
-				//meta-data will be filled in by recv()
-				uhd::rx_metadata_t md;
-				
-				//allocate buffer to receive with samples
-				std::vector<std::complex<float> > buff(rx_stream->get_max_num_samps());
-				double timeout = 0;
-				
-				size_t num_acc_samps = 0; //number of accumulated samples
-				while(num_acc_samps < total_num_samps){
-					//receive a single packet
-					size_t num_rx_samps = rx_stream->recv(
-						&buff.front(), buff.size(), md, timeout, true
-					);
-					
-					//handle the error code
-					if (md.error_code == uhd::rx_metadata_t::ERROR_CODE_TIMEOUT) break;
-					if (md.error_code != uhd::rx_metadata_t::ERROR_CODE_NONE){
-						throw std::runtime_error(str(boost::format(
-							"Unexpected error code 0x%x"
-						) % md.error_code));
-					}
-					if(verbose) std::cout << boost::format("Received %u samples.") % num_rx_samps << std::endl;
-					num_acc_samps += num_rx_samps;
-				}
-				sleep(delay);
-				
-				if (num_acc_samps < total_num_samps) std::cerr << "Receive timeout before all samples received..." << std::endl;
-				
-				if(verbose) std::cout << std::endl;
-				std::cout << boost::format("Successfully received %u samples.") % total_num_samps << std::endl << "----------------------------------------" << std::endl;
-			}
-		}
-		else{
-			
-			if(verbose) {
-				std::cout << std::endl << "About to start receiving samples." << std::endl;
-				std::cout << boost::format("Samples will start at %u and end with %u with steps of %u.") % samp_begin % samp_end % step << std::endl << std::endl;
-				
-				sleep(2);
-			}
-			
-			for(int i = int(samp_begin); i <= int(samp_end); i += step){
-				
-				usrp->set_time_now(uhd::time_spec_t(0.0));
-				
-				//create a receive streamer
-				uhd::stream_args_t stream_args("fc32"); //complex floats
-				uhd::rx_streamer::sptr rx_stream = usrp->get_rx_stream(stream_args);
-				
-				//setup streaming
-				std::cout << std::endl;
-				std::cout << "----------------------------------------" << std::endl;
-				std::cout << boost::format("About to receive %u samples.") % i << std::endl << std::endl;
-				uhd::stream_cmd_t stream_cmd(uhd::stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_DONE);
-				stream_cmd.num_samps = i;
-				stream_cmd.stream_now = true;
-				usrp->issue_stream_cmd(stream_cmd);
-				
-				//meta-data will be filled in by recv()
-				uhd::rx_metadata_t md;
-				
-				//allocate buffer to receive with samples
-				std::vector<std::complex<float> > buff(rx_stream->get_max_num_samps());
-				
-				double timeout = 0;
-				
-				size_t num_acc_samps = 0; //number of accumulated samples
-				while(int(num_acc_samps) < i){
-					//receive a single packet
-					size_t num_rx_samps = rx_stream->recv(
-						&buff.front(), buff.size(), md, timeout, true
-					);
-					
-					//handle the error code
-					if (md.error_code == uhd::rx_metadata_t::ERROR_CODE_TIMEOUT) break;
-					if (md.error_code != uhd::rx_metadata_t::ERROR_CODE_NONE){
-						throw std::runtime_error(str(boost::format(
-							"Unexpected error code 0x%x"
-						) % md.error_code));
-					}
-					
-					if(verbose) std::cout << boost::format("Received %u samples.") % num_rx_samps << std::endl;
-					
-					num_acc_samps += num_rx_samps;
-					
-				}
-				if(verbose) std::cout << std::endl;
-				std::cout << boost::format("Successfully received %u samples.") % i << std::endl << "----------------------------------------" << std::endl;
-				
-				sleep(delay);
-				
-				//std::cout << boost::format("num_acc_samps=%u, i=%u") % num_acc_samps % i << std::endl;
-				
-				if (int(num_acc_samps) < i) std::cerr << "Receive timeout before all samples received..." << std::endl;
-			}
-		}
-	return 0;
-	}
-}
\ No newline at end of file
+
+    bool use_tx = vm.count("tx") > 0;
+    bool rand_vals = vm.count("rand_vals") > 0;
+    bool verbose = vm.count("verbose") > 0;
+
+    if (use_tx)
+    {
+        //create a usrp device
+        std::cout << boost::format("Creating the usrp device with: %s...") % args << std::endl;
+        uhd::usrp::multi_usrp::sptr usrp = uhd::usrp::multi_usrp::make(args);
+        std::cout << boost::format("Using Device: %s") % usrp->get_pp_string() << std::endl;
+
+        //set the tx sample rate
+        std::cout << boost::format("Setting TX Rate: %f Msps...") % (rate/1e6) << std::endl;
+        usrp->set_tx_rate(rate);
+        std::cout << boost::format("Actual TX Rate: %f Msps...") % (usrp->get_tx_rate()/1e6) << std::endl << std::endl;
+        usrp->set_time_now(uhd::time_spec_t(0.0));
+
+        //create a transmit streamer
+        uhd::stream_args_t stream_args("fc32"); //complex floats
+        uhd::tx_streamer::sptr tx_stream = usrp->get_tx_stream(stream_args);
+
+        //allocate buffer with data to send
+        std::vector<std::complex<float> > buff(tx_stream->get_max_num_samps(), std::complex<float>(ampl, ampl));
+
+        //setup metadata for the first packet
+        uhd::tx_metadata_t md;
+        md.start_of_burst = false;
+        md.end_of_burst = false;
+        md.has_time_spec = false;
+        //md.time_spec = uhd::time_spec_t(seconds_in_future);
+
+
+        if(rand_vals){
+
+            std::srand((unsigned int) time(NULL));
+
+            while(true){
+                size_t total_num_samps = (rand() % (rand_end - rand_begin)) + rand_begin;
+                size_t num_acc_samps = 0;
+                float timeout = 0;
+
+                std::cout << "----------------------------------------" << std::endl;
+                std::cout << boost::format("About to send %u samples.") % total_num_samps << std::endl << std::endl;
+
+                usrp->set_time_now(uhd::time_spec_t(0.0));
+
+                while(num_acc_samps < total_num_samps){
+                    size_t samps_to_send = std::min(total_num_samps - num_acc_samps, buff.size());
+                    if(verbose) std::cout << boost::format("Sent %u samples.") % samps_to_send << std::endl;
+
+
+                    //send a single packet
+                    size_t num_tx_samps = tx_stream->send(&buff.front(), samps_to_send, md, timeout);
+
+                    if(num_tx_samps < samps_to_send) std::cerr << "Send timeout..." << std::endl;
+                    //if(verbose) std::cout << boost::format("Sent packet: %u samples") % num_tx_samps << std::endl;
+
+                    num_acc_samps += num_tx_samps;
+                }
+
+                md.end_of_burst   = true;
+                tx_stream->send("", 0, md);
+
+                if(verbose) std::cout << std::endl;
+                std::cout << "Waiting for async burst ACK... " << std::endl << std::flush;
+                uhd::async_metadata_t async_md;
+                bool got_async_burst_ack = false;
+                //loop through all messages for the ACK packet (may have underflow messages in queue)
+                while (not got_async_burst_ack and usrp->get_device()->recv_async_msg(async_md, timeout)){
+                    got_async_burst_ack = (async_md.event_code == uhd::async_metadata_t::EVENT_CODE_BURST_ACK);
+                }
+                std::cout << (got_async_burst_ack? "Success!" : "Failure...") << std::endl << std::endl;
+
+                std::cout << boost::format("Successfully sent %u samples.") % total_num_samps << std::endl << "----------------------------------------" << std::endl << std::endl;
+
+                boost::this_thread::sleep(boost::posix_time::microseconds(long(delay*1e6)));
+
+            }
+        }
+        else{
+
+            float timeout = 0;
+
+            if(verbose){
+                std::cout << "About to start sending samples." << std::endl;
+                std::cout << boost::format("Samples will start at %u and end with %u with steps of %u.") % samp_begin % samp_end % step << std::endl;
+
+                boost::this_thread::sleep(boost::posix_time::seconds(2));
+            }
+
+            for(int i = int(samp_begin); i <= int(samp_end); i += step){
+
+                std::cout << "----------------------------------------" << std::endl;
+
+                usrp->set_time_now(uhd::time_spec_t(0.0));
+
+                std::cout << boost::format("About to send %u samples.") % i << std::endl;
+                if(verbose) std::cout << std::endl;
+
+                size_t num_acc_samps = 0; //number of accumulated samples
+                total_num_samps = i;
+
+                while(num_acc_samps < total_num_samps){
+                    size_t samps_to_send = std::min(total_num_samps - num_acc_samps, buff.size());
+
+                    if(verbose) std::cout << boost::format("Sent %u samples.") % samps_to_send << std::endl;
+
+                    //send a single packet
+                    size_t num_tx_samps = tx_stream->send(
+                        &buff.front(), samps_to_send, md, timeout
+                    );
+
+                    if (num_tx_samps < samps_to_send) std::cerr << "Send timeout..." << std::endl;
+
+                    num_acc_samps += num_tx_samps;
+                }
+
+                //send a mini EOB packet
+                md.end_of_burst   = true;
+                tx_stream->send("", 0, md);
+
+                std::cout << std::endl << "Waiting for async burst ACK... " << std::endl << std::flush;
+                uhd::async_metadata_t async_md;
+                bool got_async_burst_ack = false;
+                //loop through all messages for the ACK packet (may have underflow messages in queue)
+                while (not got_async_burst_ack and usrp->get_device()->recv_async_msg(async_md, timeout)){
+                    got_async_burst_ack = (async_md.event_code == uhd::async_metadata_t::EVENT_CODE_BURST_ACK);
+                }
+                std::cout << (got_async_burst_ack? "Success!" : "Failure...") << std::endl << std::endl;
+
+                std::cout << boost::format("Successfully sent %u samples.") % i << std::endl << "----------------------------------------" << std::endl << std::endl;
+
+                boost::this_thread::sleep(boost::posix_time::microseconds(long(delay*1e6)));
+            }
+
+            //finished
+            std::cout << "Done!" << std::endl << std::endl;
+        }
+
+        return 0;
+    }
+    else
+    {
+        //create a usrp device
+        std::cout << boost::format("Creating the usrp device with: %s...") % args << std::endl;
+        uhd::usrp::multi_usrp::sptr usrp = uhd::usrp::multi_usrp::make(args);
+        std::cout << boost::format("Using Device: %s") % usrp->get_pp_string() << std::endl;
+
+        //set the rx sample rate
+        std::cout << boost::format("Setting RX Rate: %f Msps...") % (rate/1e6) << std::endl;
+        usrp->set_rx_rate(rate);
+        std::cout << boost::format("Actual RX Rate: %f Msps...") % (usrp->get_rx_rate()/1e6) << std::endl << std::endl;
+
+
+
+        if(rand_vals){
+            //random here
+
+            std::srand((unsigned int) time(NULL));
+
+            while(true){
+                total_num_samps = (rand() % (rand_end - rand_begin)) + rand_begin;
+
+                usrp->set_time_now(uhd::time_spec_t(0.0));
+
+                //create a receive streamer
+                uhd::stream_args_t stream_args("fc32"); //complex floats
+                uhd::rx_streamer::sptr rx_stream = usrp->get_rx_stream(stream_args);
+
+                std::cout << std::endl << "----------------------------------------" << std::endl;
+                std::cout << boost::format("About to receive %u samples.") % total_num_samps << std::endl << std::endl;
+
+                uhd::stream_cmd_t stream_cmd(uhd::stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_DONE);
+                stream_cmd.num_samps = total_num_samps;
+                stream_cmd.stream_now = true;
+                usrp->issue_stream_cmd(stream_cmd);
+
+                //meta-data will be filled in by recv()
+                uhd::rx_metadata_t md;
+
+                //allocate buffer to receive with samples
+                std::vector<std::complex<float> > buff(rx_stream->get_max_num_samps());
+                double timeout = 0;
+
+                size_t num_acc_samps = 0; //number of accumulated samples
+                while(num_acc_samps < total_num_samps){
+                    //receive a single packet
+                    size_t num_rx_samps = rx_stream->recv(
+                        &buff.front(), buff.size(), md, timeout, true
+                    );
+
+                    //handle the error code
+                    if (md.error_code == uhd::rx_metadata_t::ERROR_CODE_TIMEOUT) break;
+                    if (md.error_code != uhd::rx_metadata_t::ERROR_CODE_NONE){
+                        throw std::runtime_error(str(boost::format(
+                            "Unexpected error code 0x%x"
+                        ) % md.error_code));
+                    }
+                    if(verbose) std::cout << boost::format("Received %u samples.") % num_rx_samps << std::endl;
+                    num_acc_samps += num_rx_samps;
+                }
+                boost::this_thread::sleep(boost::posix_time::microseconds(long(delay*1e6)));
+
+                if (num_acc_samps < total_num_samps) std::cerr << "Receive timeout before all samples received..." << std::endl;
+
+                if(verbose) std::cout << std::endl;
+                std::cout << boost::format("Successfully received %u samples.") % total_num_samps << std::endl << "----------------------------------------" << std::endl;
+            }
+        }
+        else{
+
+            if(verbose) {
+                std::cout << std::endl << "About to start receiving samples." << std::endl;
+                std::cout << boost::format("Samples will start at %u and end with %u with steps of %u.") % samp_begin % samp_end % step << std::endl << std::endl;
+
+                boost::this_thread::sleep(boost::posix_time::seconds(2));
+            }
+
+            for(int i = int(samp_begin); i <= int(samp_end); i += step){
+
+                usrp->set_time_now(uhd::time_spec_t(0.0));
+
+                //create a receive streamer
+                uhd::stream_args_t stream_args("fc32"); //complex floats
+                uhd::rx_streamer::sptr rx_stream = usrp->get_rx_stream(stream_args);
+
+                //setup streaming
+                std::cout << std::endl;
+                std::cout << "----------------------------------------" << std::endl;
+                std::cout << boost::format("About to receive %u samples.") % i << std::endl << std::endl;
+                uhd::stream_cmd_t stream_cmd(uhd::stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_DONE);
+                stream_cmd.num_samps = i;
+                stream_cmd.stream_now = true;
+                usrp->issue_stream_cmd(stream_cmd);
+
+                //meta-data will be filled in by recv()
+                uhd::rx_metadata_t md;
+
+                //allocate buffer to receive with samples
+                std::vector<std::complex<float> > buff(rx_stream->get_max_num_samps());
+
+                double timeout = 0;
+
+                size_t num_acc_samps = 0; //number of accumulated samples
+                while(int(num_acc_samps) < i){
+                    //receive a single packet
+                    size_t num_rx_samps = rx_stream->recv(
+                        &buff.front(), buff.size(), md, timeout, true
+                    );
+
+                    //handle the error code
+                    if (md.error_code == uhd::rx_metadata_t::ERROR_CODE_TIMEOUT) break;
+                    if (md.error_code != uhd::rx_metadata_t::ERROR_CODE_NONE){
+                        throw std::runtime_error(str(boost::format(
+                            "Unexpected error code 0x%x"
+                        ) % md.error_code));
+                    }
+
+                    if(verbose) std::cout << boost::format("Received %u samples.") % num_rx_samps << std::endl;
+
+                    num_acc_samps += num_rx_samps;
+
+                }
+                if(verbose) std::cout << std::endl;
+                std::cout << boost::format("Successfully received %u samples.") % i << std::endl << "----------------------------------------" << std::endl;
+
+                boost::this_thread::sleep(boost::posix_time::microseconds(long(delay*1e6)));
+
+                //std::cout << boost::format("num_acc_samps=%u, i=%u") % num_acc_samps % i << std::endl;
+
+                if (int(num_acc_samps) < i) std::cerr << "Receive timeout before all samples received..." << std::endl;
+            }
+        }
+    return 0;
+    }
+}