uhd: added rx samples to udp example, cleaned up other examples, added gain options

5 files changed, 187 insertions, 36 deletions

diff --git a/host/examples/CMakeLists.txt b/host/examples/CMakeLists.txt
index e355ce241..ce2ca9640 100644
--- a/host/examples/CMakeLists.txt
+++ b/host/examples/CMakeLists.txt
@@ -20,8 +20,9 @@
 ########################################################################
 SET(example_sources
     benchmark_rx_rate.cpp
+    rx_samples_to_file.cpp
+    rx_samples_to_udp.cpp
     rx_timed_samples.cpp
-    rx_to_file.cpp
     test_async_messages.cpp
     test_pps_input.cpp
     tx_timed_samples.cpp
diff --git a/host/examples/rx_to_file.cpp b/host/examples/rx_samples_to_file.cpp
index 25727a7d3..6671644fa 100644
--- a/host/examples/rx_to_file.cpp
+++ b/host/examples/rx_samples_to_file.cpp
@@ -20,21 +20,21 @@
 #include <uhd/usrp/single_usrp.hpp>
 #include <boost/program_options.hpp>
 #include <boost/format.hpp>
+#include <boost/thread.hpp>
 #include <iostream>
 #include <fstream>
 #include <complex>
 
 namespace po = boost::program_options;
 
-
 int UHD_SAFE_MAIN(int argc, char *argv[]){
     uhd::set_thread_priority_safe();
 
     //variables to be set by po
     std::string args, file;
-    time_t seconds_in_future;
     size_t total_num_samps;
-    double rx_rate, freq;
+    double rate, freq;
+    float gain;
 
     //setup the program options
     po::options_description desc("Allowed options");
@@ -42,10 +42,10 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
         ("help", "help message")
         ("args", po::value<std::string>(&args)->default_value(""), "single uhd device address args")
         ("file", po::value<std::string>(&file)->default_value("out.16sc.dat"), "name of the file to write binary samples to")
-        ("secs", po::value<time_t>(&seconds_in_future)->default_value(1), "number of seconds in the future to receive")
         ("nsamps", po::value<size_t>(&total_num_samps)->default_value(1000), "total number of samples to receive")
-        ("rxrate", po::value<double>(&rx_rate)->default_value(100e6/16), "rate of incoming samples")
+        ("rate", po::value<double>(&rate)->default_value(100e6/16), "rate of incoming samples")
         ("freq", po::value<double>(&freq)->default_value(0), "rf center frequency in Hz")
+        ("gain", po::value<float>(&gain)->default_value(0), "gain for the RF chain")
         ("dilv", "specify to disable inner-loop verbose")
     ;
     po::variables_map vm;
@@ -67,30 +67,28 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
     uhd::device::sptr dev = sdev->get_device();
     std::cout << boost::format("Using Device: %s") % sdev->get_pp_string() << std::endl;
 
-    //set properties on the device
-    std::cout << boost::format("Setting RX Rate: %f Msps...") % (rx_rate/1e6) << std::endl;
-    sdev->set_rx_rate(rx_rate);
-    std::cout << boost::format("Actual RX Rate: %f Msps...") % (sdev->get_rx_rate()/1e6) << std::endl;
-    std::cout << boost::format("Setting device timestamp to 0...") << std::endl;
+    //set the rx sample rate
+    std::cout << boost::format("Setting RX Rate: %f Msps...") % (rate/1e6) << std::endl;
+    sdev->set_rx_rate(rate);
+    std::cout << boost::format("Actual RX Rate: %f Msps...") % (sdev->get_rx_rate()/1e6) << std::endl << std::endl;
+
+    //set the rx center frequency
+    std::cout << boost::format("Setting RX Freq: %f Mhz...") % (freq/1e6) << std::endl;
     sdev->set_rx_freq(freq);
-    sdev->set_time_now(uhd::time_spec_t(0.0));
+    std::cout << boost::format("Actual RX Freq: %f Mhz...") % (sdev->get_rx_freq()/1e6) << std::endl << std::endl;
 
-    uhd::gain_range_t rx_gain = sdev->get_rx_gain_range();
-    std::cout << "Setting RX Gain to: " << rx_gain.max << std::endl;
-    sdev->set_rx_gain(rx_gain.max);
+    //set the rx rf gain
+    std::cout << boost::format("Setting RX Gain: %f dB...") % gain << std::endl;
+    sdev->set_rx_gain(gain);
+    std::cout << boost::format("Actual RX Gain: %f dB...") % sdev->get_rx_gain() << std::endl << std::endl;
 
-    sleep(1);
+    boost::this_thread::sleep(boost::posix_time::seconds(1)); //allow for some setup time
     std::cout << "LO Locked = " << sdev->get_rx_lo_locked() << std::endl;
 
     //setup streaming
-    std::cout << std::endl;
-    std::cout << boost::format(
-        "Begin streaming %u samples, %d seconds in the future..."
-    ) % total_num_samps % seconds_in_future << 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 = false;
-    stream_cmd.time_spec = uhd::time_spec_t(seconds_in_future);
+    stream_cmd.stream_now = true;
     sdev->issue_stream_cmd(stream_cmd);
 
     //loop until total number of samples reached
diff --git a/host/examples/rx_samples_to_udp.cpp b/host/examples/rx_samples_to_udp.cpp
new file mode 100644
index 000000000..c81b43ee3
--- /dev/null
+++ b/host/examples/rx_samples_to_udp.cpp
@@ -0,0 +1,142 @@
+//
+// Copyright 2010 Ettus Research LLC
+//
+// This program 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.
+//
+// This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#include <uhd/utils/thread_priority.hpp>
+#include <uhd/utils/safe_main.hpp>
+#include <uhd/usrp/single_usrp.hpp>
+#include <uhd/transport/udp_simple.hpp>
+#include <boost/program_options.hpp>
+#include <boost/format.hpp>
+#include <boost/thread.hpp>
+#include <iostream>
+#include <complex>
+
+namespace po = boost::program_options;
+
+int UHD_SAFE_MAIN(int argc, char *argv[]){
+    uhd::set_thread_priority_safe();
+
+    //variables to be set by po
+    std::string args;
+    size_t total_num_samps;
+    double rate, freq;
+    float gain;
+    std::string addr, port;
+
+    //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")
+        ("nsamps", po::value<size_t>(&total_num_samps)->default_value(1000), "total number of samples to receive")
+        ("rate", po::value<double>(&rate)->default_value(100e6/16), "rate of incoming samples")
+        ("freq", po::value<double>(&freq)->default_value(0), "rf center frequency in Hz")
+        ("gain", po::value<float>(&gain)->default_value(0), "gain for the RF chain")
+        ("port", po::value<std::string>(&port)->default_value("7124"), "server udp port")
+        ("addr", po::value<std::string>(&addr)->default_value("192.168.1.10"), "resolvable server address")
+        ("dilv", "specify to disable inner-loop verbose")
+    ;
+    po::variables_map vm;
+    po::store(po::parse_command_line(argc, argv, desc), vm);
+    po::notify(vm);
+
+    //print the help message
+    if (vm.count("help")){
+        std::cout << boost::format("UHD RX to UDP %s") % desc << std::endl;
+        return ~0;
+    }
+
+    bool verbose = vm.count("dilv") == 0;
+
+    //create a usrp device
+    std::cout << std::endl;
+    std::cout << boost::format("Creating the usrp device with: %s...") % args << std::endl;
+    uhd::usrp::single_usrp::sptr sdev = uhd::usrp::single_usrp::make(args);
+    uhd::device::sptr dev = sdev->get_device();
+    std::cout << boost::format("Using Device: %s") % sdev->get_pp_string() << std::endl;
+
+    //set the rx sample rate
+    std::cout << boost::format("Setting RX Rate: %f Msps...") % (rate/1e6) << std::endl;
+    sdev->set_rx_rate(rate);
+    std::cout << boost::format("Actual RX Rate: %f Msps...") % (sdev->get_rx_rate()/1e6) << std::endl << std::endl;
+
+    //set the rx center frequency
+    std::cout << boost::format("Setting RX Freq: %f Mhz...") % (freq/1e6) << std::endl;
+    sdev->set_rx_freq(freq);
+    std::cout << boost::format("Actual RX Freq: %f Mhz...") % (sdev->get_rx_freq()/1e6) << std::endl << std::endl;
+
+    //set the rx rf gain
+    std::cout << boost::format("Setting RX Gain: %f dB...") % gain << std::endl;
+    sdev->set_rx_gain(gain);
+    std::cout << boost::format("Actual RX Gain: %f dB...") % sdev->get_rx_gain() << std::endl << std::endl;
+
+    boost::this_thread::sleep(boost::posix_time::seconds(1)); //allow for some setup time
+    std::cout << "LO Locked = " << sdev->get_rx_lo_locked() << std::endl;
+
+    //setup streaming
+    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;
+    sdev->issue_stream_cmd(stream_cmd);
+
+    //loop until total number of samples reached
+    size_t num_acc_samps = 0; //number of accumulated samples
+    uhd::rx_metadata_t md;
+    std::vector<std::complex<float> > buff(dev->get_max_recv_samps_per_packet());
+    uhd::transport::udp_simple::sptr udp_xport = uhd::transport::udp_simple::make_connected(addr, port);
+
+    while(num_acc_samps < total_num_samps){
+        size_t num_rx_samps = dev->recv(
+            &buff.front(), buff.size(), md,
+            uhd::io_type_t::COMPLEX_FLOAT32,
+            uhd::device::RECV_MODE_ONE_PACKET
+        );
+
+        //handle the error codes
+        switch(md.error_code){
+        case uhd::rx_metadata_t::ERROR_CODE_NONE:
+            break;
+
+        case uhd::rx_metadata_t::ERROR_CODE_TIMEOUT:
+            if (num_acc_samps == 0) continue;
+            std::cout << boost::format(
+                "Got timeout before all samples received, possible packet loss, exiting loop..."
+            ) << std::endl;
+            goto done_loop;
+
+        default:
+            std::cout << boost::format(
+                "Got error code 0x%x, exiting loop..."
+            ) % md.error_code << std::endl;
+            goto done_loop;
+        }
+
+        //send complex single precision floating point samples over udp
+        udp_xport->send(boost::asio::buffer(buff, num_rx_samps));
+
+        if(verbose) std::cout << boost::format(
+            "Got packet: %u samples, %u full secs, %f frac secs"
+        ) % num_rx_samps % md.time_spec.get_full_secs() % md.time_spec.get_frac_secs() << std::endl;
+
+        num_acc_samps += num_rx_samps;
+    } done_loop:
+
+    //finished
+    std::cout << std::endl << "Done!" << std::endl << std::endl;
+
+    return 0;
+}
diff --git a/host/examples/rx_timed_samples.cpp b/host/examples/rx_timed_samples.cpp
index 441665900..8a810811f 100644
--- a/host/examples/rx_timed_samples.cpp
+++ b/host/examples/rx_timed_samples.cpp
@@ -32,7 +32,7 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
     std::string args;
     time_t seconds_in_future;
     size_t total_num_samps;
-    double rx_rate, freq;
+    double rate, freq;
 
     //setup the program options
     po::options_description desc("Allowed options");
@@ -41,7 +41,7 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
         ("args", po::value<std::string>(&args)->default_value(""), "single uhd device address args")
         ("secs", po::value<time_t>(&seconds_in_future)->default_value(3), "number of seconds in the future to receive")
         ("nsamps", po::value<size_t>(&total_num_samps)->default_value(1000), "total number of samples to receive")
-        ("rxrate", po::value<double>(&rx_rate)->default_value(100e6/16), "rate of incoming samples")
+        ("rate", po::value<double>(&rate)->default_value(100e6/16), "rate of incoming samples")
         ("freq", po::value<double>(&freq)->default_value(0), "rf center frequency in Hz")
         ("dilv", "specify to disable inner-loop verbose")
     ;
@@ -64,12 +64,17 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
     uhd::device::sptr dev = sdev->get_device();
     std::cout << boost::format("Using Device: %s") % sdev->get_pp_string() << std::endl;
 
-    //set properties on the device
-    std::cout << boost::format("Setting RX Rate: %f Msps...") % (rx_rate/1e6) << std::endl;
-    sdev->set_rx_rate(rx_rate);
-    std::cout << boost::format("Actual RX Rate: %f Msps...") % (sdev->get_rx_rate()/1e6) << std::endl;
-    std::cout << boost::format("Setting device timestamp to 0...") << std::endl;
+    //set the rx sample rate
+    std::cout << boost::format("Setting RX Rate: %f Msps...") % (rate/1e6) << std::endl;
+    sdev->set_rx_rate(rate);
+    std::cout << boost::format("Actual RX Rate: %f Msps...") % (sdev->get_rx_rate()/1e6) << std::endl << std::endl;
+
+    //set the rx center frequency
+    std::cout << boost::format("Setting RX Freq: %f Mhz...") % (freq/1e6) << std::endl;
     sdev->set_rx_freq(freq);
+    std::cout << boost::format("Actual RX Freq: %f Mhz...") % (sdev->get_rx_freq()/1e6) << std::endl << std::endl;
+
+    std::cout << boost::format("Setting device timestamp to 0...") << std::endl;
     sdev->set_time_now(uhd::time_spec_t(0.0));
 
     //setup streaming
diff --git a/host/examples/tx_timed_samples.cpp b/host/examples/tx_timed_samples.cpp
index 863446682..799da37e0 100644
--- a/host/examples/tx_timed_samples.cpp
+++ b/host/examples/tx_timed_samples.cpp
@@ -33,7 +33,7 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
     time_t seconds_in_future;
     size_t total_num_samps;
     size_t samps_per_packet;
-    double tx_rate, freq;
+    double rate, freq;
     float ampl;
 
     //setup the program options
@@ -44,7 +44,7 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
         ("secs", po::value<time_t>(&seconds_in_future)->default_value(3), "number of seconds in the future to transmit")
         ("nsamps", po::value<size_t>(&total_num_samps)->default_value(1000), "total number of samples to transmit")
         ("spp", po::value<size_t>(&samps_per_packet)->default_value(1000), "number of samples per packet")
-        ("txrate", po::value<double>(&tx_rate)->default_value(100e6/16), "rate of outgoing samples")
+        ("rate", po::value<double>(&rate)->default_value(100e6/16), "rate of outgoing samples")
         ("freq", po::value<double>(&freq)->default_value(0), "rf center frequency in Hz")
         ("ampl", po::value<float>(&ampl)->default_value(float(0.3)), "amplitude of each sample")
         ("dilv", "specify to disable inner-loop verbose")
@@ -68,12 +68,17 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
     uhd::device::sptr dev = sdev->get_device();
     std::cout << boost::format("Using Device: %s") % sdev->get_pp_string() << std::endl;
 
-    //set properties on the device
-    std::cout << boost::format("Setting TX Rate: %f Msps...") % (tx_rate/1e6) << std::endl;
-    sdev->set_tx_rate(tx_rate);
-    std::cout << boost::format("Actual TX Rate: %f Msps...") % (sdev->get_tx_rate()/1e6) << std::endl;
-    std::cout << boost::format("Setting device timestamp to 0...") << std::endl;
+    //set the tx sample rate
+    std::cout << boost::format("Setting TX Rate: %f Msps...") % (rate/1e6) << std::endl;
+    sdev->set_tx_rate(rate);
+    std::cout << boost::format("Actual TX Rate: %f Msps...") % (sdev->get_tx_rate()/1e6) << std::endl << std::endl;
+
+    //set the tx center frequency
+    std::cout << boost::format("Setting TX Freq: %f Mhz...") % (freq/1e6) << std::endl;
     sdev->set_tx_freq(freq);
+    std::cout << boost::format("Actual TX Freq: %f Mhz...") % (sdev->get_tx_freq()/1e6) << std::endl << std::endl;
+
+    std::cout << boost::format("Setting device timestamp to 0...") << std::endl;
     sdev->set_time_now(uhd::time_spec_t(0.0));
 
     //allocate data to send