Merge branch 'usrp_e' of git@ettus.sourcerepo.com:ettus/uhd into usrp_e

2 files changed, 119 insertions, 0 deletions

diff --git a/host/examples/CMakeLists.txt b/host/examples/CMakeLists.txt
new file mode 100644
index 000000000..242857625
--- /dev/null
+++ b/host/examples/CMakeLists.txt
@@ -0,0 +1,20 @@
+#
+# 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/>.
+#
+
+ADD_EXECUTABLE(rx_timed_samples rx_timed_samples.cpp)
+TARGET_LINK_LIBRARIES(rx_timed_samples uhd)
+INSTALL(TARGETS rx_timed_samples RUNTIME DESTINATION ${PKG_DATA_DIR}/examples)
diff --git a/host/examples/rx_timed_samples.cpp b/host/examples/rx_timed_samples.cpp
new file mode 100644
index 000000000..88e112584
--- /dev/null
+++ b/host/examples/rx_timed_samples.cpp
@@ -0,0 +1,99 @@
+//
+// 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/safe_main.hpp>
+#include <uhd/simple_device.hpp>
+#include <uhd/props.hpp>
+#include <boost/program_options.hpp>
+#include <boost/format.hpp>
+#include <iostream>
+#include <complex>
+
+namespace po = boost::program_options;
+
+int UHD_SAFE_MAIN(int argc, char *argv[]){
+    //variables to be set by po
+    std::string transport_args;
+    int seconds_in_future;
+    size_t total_num_samps;
+
+    //setup the program options
+    po::options_description desc("Allowed options");
+    desc.add_options()
+        ("help", "help message")
+        ("args", po::value<std::string>(&transport_args)->default_value(""), "simple uhd transport args")
+        ("secs", po::value<int>(&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")
+    ;
+    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 Timed Samples %s") % desc << std::endl;
+        return ~0;
+    }
+
+    //create a usrp device
+    std::cout << std::endl;
+    std::cout << boost::format("Creating the usrp device with: %s...")
+        % transport_args << std::endl;
+    uhd::simple_device::sptr sdev = uhd::simple_device::make(transport_args);
+    uhd::device::sptr dev = sdev->get_device();
+    std::cout << boost::format("Using Device: %s") % sdev->get_name() << std::endl;
+
+    //set properties on the device
+    double rx_rate = sdev->get_rx_rates()[4]; //pick some rate
+    std::cout << boost::format("Setting RX Rate: %f Msps...") % (rx_rate/1e6) << std::endl;
+    sdev->set_rx_rate(rx_rate);
+    std::cout << boost::format("Setting device timestamp to 0...") << std::endl;
+    sdev->set_time_now(uhd::time_spec_t(0));
+
+    //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;
+    stream_cmd.stream_now = false;
+    stream_cmd.time_spec = uhd::time_spec_t(seconds_in_future);
+    stream_cmd.continuous = false;
+    stream_cmd.num_samps = total_num_samps;
+    sdev->issue_stream_cmd(stream_cmd);
+
+    //loop until total number of samples reached
+    size_t num_acc_samps = 0; //number of accumulated samples
+    while(num_acc_samps < total_num_samps){
+        uhd::rx_metadata_t md;
+        std::complex<float> buff[1000];
+        size_t num_rx_samps = dev->recv(
+            boost::asio::buffer(buff, sizeof(buff)),
+            md, uhd::io_type_t::COMPLEX_FLOAT32
+        );
+        if (num_rx_samps == 0) continue; //wait for packets with contents
+
+        std::cout << boost::format("Got packet: %u samples, %u secs, %u ticks")
+            % num_rx_samps % md.time_spec.secs % md.time_spec.ticks << std::endl;
+
+        num_acc_samps += num_rx_samps;
+    }
+
+    //finished
+    std::cout << std::endl << "Done!" << std::endl << std::endl;
+
+    return 0;
+}