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//
// Copyright 2010-2011 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;
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(), 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());
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(), 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());
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(), 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());
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(), 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(), 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(), 2.45e9);
std::cout << tr.to_pp_string() << std::endl;
BOOST_CHECK_CLOSE(tr.actual_inter_freq, 2.45e9, tolerance);
}
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