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-rw-r--r--host/tests/tune_helper_test.cpp255
1 files changed, 255 insertions, 0 deletions
diff --git a/host/tests/tune_helper_test.cpp b/host/tests/tune_helper_test.cpp
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+++ b/host/tests/tune_helper_test.cpp
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+//
+// 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 <boost/test/unit_test.hpp>
+#include <uhd/usrp/tune_helper.hpp>
+#include <uhd/usrp/subdev_props.hpp>
+#include <uhd/usrp/dsp_props.hpp>
+#include <uhd/usrp/dsp_utils.hpp>
+#include <iostream>
+
+using namespace uhd;
+using namespace uhd::usrp;
+
+/***********************************************************************
+ * Dummy properties objects
+ **********************************************************************/
+class dummy_subdev : public wax::obj{
+public:
+ dummy_subdev(double resolution):
+ _resolution(resolution)
+ {
+ /* NOP */
+ }
+private:
+ void get(const wax::obj &key, wax::obj &val){
+ switch(key.as<subdev_prop_t>()){
+
+ case SUBDEV_PROP_FREQ:
+ val = _freq;
+ return;
+
+ case SUBDEV_PROP_USE_LO_OFFSET:
+ val = false;
+ return;
+
+ default: UHD_THROW_PROP_GET_ERROR();
+ }
+ }
+
+ void set(const wax::obj &key, const wax::obj &val){
+ switch(key.as<subdev_prop_t>()){
+ case SUBDEV_PROP_FREQ:
+ _freq = _resolution*int(val.as<double>()/_resolution);
+ return;
+
+ default: UHD_THROW_PROP_SET_ERROR();
+ }
+ }
+
+ double _freq, _resolution;
+};
+
+class dummy_subdev_basic : public wax::obj{
+private:
+ void get(const wax::obj &key, wax::obj &val){
+ switch(key.as<subdev_prop_t>()){
+
+ case SUBDEV_PROP_FREQ:
+ val = double(0.0); //always zero
+ return;
+
+ case SUBDEV_PROP_USE_LO_OFFSET:
+ val = false;
+ return;
+
+ default: UHD_THROW_PROP_GET_ERROR();
+ }
+ }
+
+ void set(const wax::obj &key, const wax::obj &){
+ switch(key.as<subdev_prop_t>()){
+ case SUBDEV_PROP_FREQ:
+ // do nothing
+ return;
+
+ default: UHD_THROW_PROP_SET_ERROR();
+ }
+ }
+};
+
+class dummy_subdev_bw : public wax::obj{
+private:
+ void get(const wax::obj &key, wax::obj &val){
+ switch(key.as<subdev_prop_t>()){
+
+ case SUBDEV_PROP_FREQ:
+ val = _freq;
+ return;
+
+ case SUBDEV_PROP_USE_LO_OFFSET:
+ val = true;
+ return;
+
+ case SUBDEV_PROP_BANDWIDTH:
+ val = _bandwidth;
+ return;
+
+ default: UHD_THROW_PROP_GET_ERROR();
+ }
+ }
+
+ void set(const wax::obj &key, const wax::obj &val){
+ switch(key.as<subdev_prop_t>()){
+ case SUBDEV_PROP_FREQ:
+ _freq = val.as<double>();
+ return;
+
+ case SUBDEV_PROP_BANDWIDTH:
+ _bandwidth = val.as<double>();
+ return;
+
+ default: UHD_THROW_PROP_SET_ERROR();
+ }
+ }
+
+ double _freq, _bandwidth;
+};
+
+class dummy_dsp : public wax::obj{
+public:
+ dummy_dsp(double codec_rate):
+ _codec_rate(codec_rate)
+ {
+ /* NOP */
+ }
+private:
+ void get(const wax::obj &key_, wax::obj &val){
+ named_prop_t key = named_prop_t::extract(key_);
+ switch(key.as<dsp_prop_t>()){
+ case DSP_PROP_CODEC_RATE:
+ val = _codec_rate;
+ return;
+
+ case DSP_PROP_HOST_RATE:
+ val = _host_rate;
+ return;
+
+ case DSP_PROP_FREQ_SHIFT:
+ val = _freq_shift;
+ return;
+
+ case DSP_PROP_FREQ_SHIFT_NAMES:
+ val = prop_names_t(1, "");
+ return;
+
+ default: UHD_THROW_PROP_GET_ERROR();
+ }
+ }
+
+ void set(const wax::obj &key_, const wax::obj &val){
+ named_prop_t key = named_prop_t::extract(key_);
+ switch(key.as<dsp_prop_t>()){
+ case DSP_PROP_FREQ_SHIFT:
+ _freq_shift = val.as<double>();
+ dsp_type1::calc_cordic_word_and_update(_freq_shift, _codec_rate);
+ return;
+
+ case DSP_PROP_HOST_RATE:
+ _host_rate = val.as<double>();
+ return;
+
+ default: UHD_THROW_PROP_SET_ERROR();
+ }
+ }
+
+ double _codec_rate, _freq_shift, _host_rate;
+};
+
+/***********************************************************************
+ * Test cases
+ **********************************************************************/
+static const double tolerance = 0.001;
+
+BOOST_AUTO_TEST_CASE(test_tune_helper_rx){
+ dummy_subdev subdev(1e6);
+ dummy_dsp dsp(100e6);
+
+ std::cout << "Testing tune helper RX automatic IF offset" << std::endl;
+ tune_result_t tr = tune_rx_subdev_and_dsp(subdev.get_link(), dsp.get_link(), 0, 2.3451e9);
+ std::cout << tr.to_pp_string() << std::endl;
+ BOOST_CHECK_CLOSE(tr.actual_inter_freq, 2.345e9, tolerance);
+ BOOST_CHECK_CLOSE(tr.actual_dsp_freq, -100e3, tolerance);
+
+ double freq_derived = derive_freq_from_rx_subdev_and_dsp(subdev.get_link(), dsp.get_link(), 0);
+ BOOST_CHECK_CLOSE(freq_derived, 2.3451e9, tolerance);
+}
+
+BOOST_AUTO_TEST_CASE(test_tune_helper_tx){
+ dummy_subdev subdev(1e6);
+ dummy_dsp dsp(100e6);
+
+ std::cout << "Testing tune helper TX automatic IF offset" << std::endl;
+ tune_result_t tr = tune_tx_subdev_and_dsp(subdev.get_link(), dsp.get_link(), 0, 2.3451e9);
+ std::cout << tr.to_pp_string() << std::endl;
+ BOOST_CHECK_CLOSE(tr.actual_inter_freq, 2.345e9, tolerance);
+ BOOST_CHECK_CLOSE(tr.actual_dsp_freq, 100e3, tolerance);
+
+ double freq_derived = derive_freq_from_tx_subdev_and_dsp(subdev.get_link(), dsp.get_link(), 0);
+ BOOST_CHECK_CLOSE(freq_derived, 2.3451e9, tolerance);
+}
+
+BOOST_AUTO_TEST_CASE(test_tune_helper_rx_nyquist){
+ dummy_subdev_basic subdev;
+ dummy_dsp dsp(100e6);
+
+ std::cout << "Testing tune helper RX dummy basic board" << std::endl;
+ tune_result_t tr = tune_rx_subdev_and_dsp(subdev.get_link(), dsp.get_link(), 0, 55e6);
+ std::cout << tr.to_pp_string() << std::endl;
+ BOOST_CHECK_CLOSE(tr.actual_inter_freq, 0.0, tolerance);
+ BOOST_CHECK_CLOSE(tr.actual_dsp_freq, 45e6, tolerance);
+
+ double freq_derived = derive_freq_from_rx_subdev_and_dsp(subdev.get_link(), dsp.get_link(), 0);
+ BOOST_CHECK_CLOSE(freq_derived, -45e6, tolerance);
+}
+
+BOOST_AUTO_TEST_CASE(test_tune_helper_rx_lo_off){
+ dummy_subdev_bw subdev;
+ dummy_dsp dsp(100e6);
+ tune_result_t tr;
+
+ std::cout << "Testing tune helper RX automatic LO offset B >> fs" << std::endl;
+ subdev[SUBDEV_PROP_BANDWIDTH] = double(40e6);
+ dsp[DSP_PROP_HOST_RATE] = double(4e6);
+ tr = tune_rx_subdev_and_dsp(subdev.get_link(), dsp.get_link(), 0, 2.45e9);
+ std::cout << tr.to_pp_string() << std::endl;
+ BOOST_CHECK_CLOSE(tr.actual_inter_freq, 2.45e9+4e6/2, tolerance);
+
+ std::cout << "Testing tune helper RX automatic LO offset B > fs" << std::endl;
+ subdev[SUBDEV_PROP_BANDWIDTH] = double(40e6);
+ dsp[DSP_PROP_HOST_RATE] = double(25e6);
+ tr = tune_rx_subdev_and_dsp(subdev.get_link(), dsp.get_link(), 0, 2.45e9);
+ std::cout << tr.to_pp_string() << std::endl;
+ BOOST_CHECK_CLOSE(tr.actual_inter_freq, 2.45e9+(40e6-25e6)/2, tolerance);
+
+ std::cout << "Testing tune helper RX automatic LO offset B < fs" << std::endl;
+ subdev[SUBDEV_PROP_BANDWIDTH] = double(20e6);
+ dsp[DSP_PROP_HOST_RATE] = double(25e6);
+ tr = tune_rx_subdev_and_dsp(subdev.get_link(), dsp.get_link(), 0, 2.45e9);
+ std::cout << tr.to_pp_string() << std::endl;
+ BOOST_CHECK_CLOSE(tr.actual_inter_freq, 2.45e9, tolerance);
+}
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