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-rw-r--r--host/examples/CMakeLists.txt5
-rw-r--r--host/examples/tx_continuous_samples.cpp110
-rw-r--r--host/include/uhd/transport/alignment_buffer.ipp13
3 files changed, 125 insertions, 3 deletions
diff --git a/host/examples/CMakeLists.txt b/host/examples/CMakeLists.txt
index 5071b114f..10a9a833a 100644
--- a/host/examples/CMakeLists.txt
+++ b/host/examples/CMakeLists.txt
@@ -15,6 +15,10 @@
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
+
+ADD_EXECUTABLE(tx_continuous_samples tx_continuous_samples.cpp)
+TARGET_LINK_LIBRARIES(tx_continuous_samples uhd)
+
ADD_EXECUTABLE(benchmark_rx_rate benchmark_rx_rate.cpp)
TARGET_LINK_LIBRARIES(benchmark_rx_rate uhd)
@@ -25,6 +29,7 @@ ADD_EXECUTABLE(tx_timed_samples tx_timed_samples.cpp)
TARGET_LINK_LIBRARIES(tx_timed_samples uhd)
INSTALL(TARGETS
+ tx_continuous_samples
benchmark_rx_rate
rx_timed_samples
tx_timed_samples
diff --git a/host/examples/tx_continuous_samples.cpp b/host/examples/tx_continuous_samples.cpp
new file mode 100644
index 000000000..cf70b07fb
--- /dev/null
+++ b/host/examples/tx_continuous_samples.cpp
@@ -0,0 +1,110 @@
+//
+// 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/simple_usrp.hpp>
+#include <boost/program_options.hpp>
+#include <boost/thread/thread_time.hpp> //system time
+#include <boost/format.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_duration;
+ size_t samps_per_packet;
+ 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")
+ ("duration", po::value<size_t>(&total_duration)->default_value(3), "number of seconds 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")
+ ("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")
+ ;
+ 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 Continuous Samples %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::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_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;
+ sdev->set_tx_freq(freq);
+
+ //allocate data to send
+ std::vector<std::complex<float> > buff(samps_per_packet, std::complex<float>(ampl, ampl));
+
+ //setup the metadata flags
+ uhd::tx_metadata_t md;
+ md.start_of_burst = true; //always SOB (good for continuous streaming)
+ md.end_of_burst = false;
+
+ //send the data in multiple packets
+ boost::system_time end_time(boost::get_system_time() + boost::posix_time::seconds(total_duration));
+ while(end_time > boost::get_system_time()){
+ //send samples per packet (driver fragments internally)
+ size_t num_tx_samps = dev->send(
+ &buff.front(), samps_per_packet, md,
+ uhd::io_type_t::COMPLEX_FLOAT32,
+ uhd::device::SEND_MODE_FULL_BUFF
+ );
+ if(verbose) std::cout << std::endl << boost::format("Sent %d samples") % num_tx_samps << std::endl;
+ }
+
+ //send a mini EOB packet
+ if(verbose) std::cout << std::endl << boost::format("Sending packet with end-of-burst") << std::endl;
+ md.start_of_burst = false;
+ md.end_of_burst = true;
+ dev->send(
+ NULL, 0, md,
+ uhd::io_type_t::COMPLEX_FLOAT32,
+ uhd::device::SEND_MODE_FULL_BUFF
+ );
+
+ //finished
+ std::cout << std::endl << "Done!" << std::endl << std::endl;
+
+ return 0;
+}
diff --git a/host/include/uhd/transport/alignment_buffer.ipp b/host/include/uhd/transport/alignment_buffer.ipp
index ed7cfd26c..61b3b60f5 100644
--- a/host/include/uhd/transport/alignment_buffer.ipp
+++ b/host/include/uhd/transport/alignment_buffer.ipp
@@ -57,12 +57,15 @@ namespace uhd{ namespace transport{ namespace{ /*anon*/
std::vector<elem_type> &elems,
const time_duration_t &time
){
+ boost::system_time exit_time = boost::get_system_time() + time;
buff_contents_type buff_contents_tmp;
std::list<size_t> indexes_to_do(_all_indexes);
//do an initial pop to load an initial sequence id
size_t index = indexes_to_do.front();
- if (not _buffs[index]->pop_with_timed_wait(buff_contents_tmp, time)) return false;
+ if (not _buffs[index]->pop_with_timed_wait(
+ buff_contents_tmp, exit_time - boost::get_system_time()
+ )) return false;
elems[index] = buff_contents_tmp.first;
seq_type expected_seq_id = buff_contents_tmp.second;
indexes_to_do.pop_front();
@@ -75,7 +78,9 @@ namespace uhd{ namespace transport{ namespace{ /*anon*/
_there_was_a_clear = false;
indexes_to_do = _all_indexes;
index = indexes_to_do.front();
- if (not _buffs[index]->pop_with_timed_wait(buff_contents_tmp, time)) return false;
+ if (not _buffs[index]->pop_with_timed_wait(
+ buff_contents_tmp, exit_time - boost::get_system_time()
+ )) return false;
elems[index] = buff_contents_tmp.first;
expected_seq_id = buff_contents_tmp.second;
indexes_to_do.pop_front();
@@ -83,7 +88,9 @@ namespace uhd{ namespace transport{ namespace{ /*anon*/
//pop an element off for this index
index = indexes_to_do.front();
- if (not _buffs[index]->pop_with_timed_wait(buff_contents_tmp, time)) return false;
+ if (not _buffs[index]->pop_with_timed_wait(
+ buff_contents_tmp, exit_time - boost::get_system_time()
+ )) return false;
//if the sequence id matches:
// store the popped element into the output,
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-16 16:51:44 +0000