Added tx timed samples example.

Added called to device to get max samples per packet.
Removed device props that gave max samples per packet.

3 files changed, 104 insertions, 5 deletions

diff --git a/host/examples/CMakeLists.txt b/host/examples/CMakeLists.txt
index 242857625..a537c0901 100644
--- a/host/examples/CMakeLists.txt
+++ b/host/examples/CMakeLists.txt
@@ -18,3 +18,7 @@
 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)
+
+ADD_EXECUTABLE(tx_timed_samples tx_timed_samples.cpp)
+TARGET_LINK_LIBRARIES(tx_timed_samples uhd)
+INSTALL(TARGETS tx_timed_samples RUNTIME DESTINATION ${PKG_DATA_DIR}/examples)
diff --git a/host/examples/rx_timed_samples.cpp b/host/examples/rx_timed_samples.cpp
index 4b8774036..d2306c7c4 100644
--- a/host/examples/rx_timed_samples.cpp
+++ b/host/examples/rx_timed_samples.cpp
@@ -29,7 +29,7 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
     std::string args;
     int seconds_in_future;
     size_t total_num_samps;
-    double rx_rate;
+    double rx_rate, freq;
 
     //setup the program options
     po::options_description desc("Allowed options");
@@ -39,10 +39,11 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
         ("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")
         ("rxrate", po::value<double>(&rx_rate)->default_value(100e6/16), "rate of incoming samples")
+        ("freq", po::value<double>(&freq)->default_value(0), "rf center frequency in Hz")
     ;
     po::variables_map vm;
     po::store(po::parse_command_line(argc, argv, desc), vm);
-    po::notify(vm); 
+    po::notify(vm);
 
     //print the help message
     if (vm.count("help")){
@@ -62,6 +63,7 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
     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;
+    sdev->set_rx_freq(freq);
     sdev->set_time_now(uhd::time_spec_t(0));
 
     //setup streaming
@@ -78,10 +80,11 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
     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];
+        std::vector<std::complex<float> > buff(dev->get_max_recv_samps_per_packet());
         size_t num_rx_samps = dev->recv(
-            boost::asio::buffer(buff, sizeof(buff)),
-            md, uhd::io_type_t::COMPLEX_FLOAT32
+            boost::asio::buffer(buff),
+            md, uhd::io_type_t::COMPLEX_FLOAT32,
+            uhd::device::RECV_MODE_ONE_PACKET
         );
         if (num_rx_samps == 0) continue; //wait for packets with contents
 
diff --git a/host/examples/tx_timed_samples.cpp b/host/examples/tx_timed_samples.cpp
new file mode 100644
index 000000000..6dee69cd5
--- /dev/null
+++ b/host/examples/tx_timed_samples.cpp
@@ -0,0 +1,92 @@
+//
+// 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/usrp/simple_usrp.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 args;
+    int seconds_in_future;
+    size_t total_num_samps;
+    double tx_rate, freq;
+    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(""), "simple uhd device address args")
+        ("secs", po::value<int>(&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")
+        ("txrate", po::value<double>(&tx_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(0.3), "amplitude of each sample")
+    ;
+    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 TX 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...") % args << std::endl;
+    uhd::usrp::simple_usrp::sptr sdev = uhd::usrp::simple_usrp::make(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
+    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;
+    sdev->set_tx_freq(freq);
+    sdev->set_time_now(uhd::time_spec_t(0));
+
+    //data to send
+    std::vector<std::complex<float> > buff(total_num_samps, std::complex<float>(ampl, ampl));
+    uhd::tx_metadata_t md;
+    md.start_of_burst = true;
+    md.end_of_burst = true;
+    md.has_time_spec = true;
+    md.time_spec = uhd::time_spec_t(seconds_in_future);
+
+    //send the entire buffer, let the driver handle fragmentation
+    size_t num_tx_samps = dev->send(
+        boost::asio::buffer(buff),
+        md, uhd::io_type_t::COMPLEX_FLOAT32,
+        uhd::device::SEND_MODE_FULL_BUFF
+    );
+    std::cout << std::endl << boost::format("Sent %d samples") % num_tx_samps << std::endl;
+
+
+    //finished
+    std::cout << std::endl << "Done!" << std::endl << std::endl;
+
+    return 0;
+}