mirror of https://github.com/gnss-sdr/gnss-sdr
319 lines
13 KiB
C++
319 lines
13 KiB
C++
/*!
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* \file uhd_signal_source.cc
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* \brief Universal Hardware Driver signal source
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* \author Javier Arribas, 2012. jarribas(at)cttc.es
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*
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* -------------------------------------------------------------------------
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*
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* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
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*
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* GNSS-SDR is a software defined Global Navigation
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* Satellite Systems receiver
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*
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* This file is part of GNSS-SDR.
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*
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* GNSS-SDR is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GNSS-SDR is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
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*
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* -------------------------------------------------------------------------
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*/
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#include "uhd_signal_source.h"
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#include "GPS_L1_CA.h"
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#include "configuration_interface.h"
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#include "gnss_sdr_valve.h"
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#include <glog/logging.h>
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#include <uhd/exception.hpp>
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#include <uhd/types/device_addr.hpp>
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#include <volk/volk.h>
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#include <iostream>
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#include <utility>
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using google::LogMessage;
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UhdSignalSource::UhdSignalSource(ConfigurationInterface* configuration,
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const std::string& role, unsigned int in_stream, unsigned int out_stream,
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boost::shared_ptr<gr::msg_queue> queue) : role_(role), in_stream_(in_stream), out_stream_(out_stream), queue_(std::move(queue))
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{
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// DUMP PARAMETERS
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std::string empty = "";
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std::string default_dump_file = "./data/signal_source.dat";
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std::string default_item_type = "cshort";
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// UHD COMMON PARAMETERS
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uhd::device_addr_t dev_addr;
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device_address_ = configuration->property(role + ".device_address", empty);
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// When left empty, the device discovery routines will search all
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// available transports on the system (ethernet, usb...).
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// To narrow down the discovery process to a particular device,
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// specify a transport key/value pair specific to your device.
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if (empty != device_address_) // if not empty
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{
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dev_addr["addr"] = device_address_;
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}
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//filter the device by serial number if required (useful for USB devices)
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std::string device_serial = configuration->property(role + ".device_serial", empty);
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if (empty != device_serial) // if not empty
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{
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dev_addr["serial"] = device_serial;
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}
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subdevice_ = configuration->property(role + ".subdevice", empty);
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clock_source_ = configuration->property(role + ".clock_source", std::string("internal"));
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RF_channels_ = configuration->property(role + ".RF_channels", 1);
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sample_rate_ = configuration->property(role + ".sampling_frequency", 4.0e6);
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item_type_ = configuration->property(role + ".item_type", default_item_type);
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if (RF_channels_ == 1)
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{
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// Single RF channel UHD operation (backward compatible config file format)
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samples_.push_back(configuration->property(role + ".samples", 0));
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dump_.push_back(configuration->property(role + ".dump", false));
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dump_filename_.push_back(configuration->property(role + ".dump_filename", default_dump_file));
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freq_.push_back(configuration->property(role + ".freq", GPS_L1_FREQ_HZ));
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gain_.push_back(configuration->property(role + ".gain", 50.0));
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IF_bandwidth_hz_.push_back(configuration->property(role + ".IF_bandwidth_hz", sample_rate_ / 2));
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}
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else
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{
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// multiple RF channels selected
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for (int i = 0; i < RF_channels_; i++)
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{
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// Single RF channel UHD operation (backward compatible config file format)
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samples_.push_back(configuration->property(role + ".samples" + std::to_string(i), 0));
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dump_.push_back(configuration->property(role + ".dump" + std::to_string(i), false));
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dump_filename_.push_back(configuration->property(role + ".dump_filename" + std::to_string(i), default_dump_file));
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freq_.push_back(configuration->property(role + ".freq" + std::to_string(i), GPS_L1_FREQ_HZ));
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gain_.push_back(configuration->property(role + ".gain" + std::to_string(i), 50.0));
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IF_bandwidth_hz_.push_back(configuration->property(role + ".IF_bandwidth_hz" + std::to_string(i), sample_rate_ / 2));
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}
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}
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// 1. Make the uhd driver instance
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//uhd_source_= uhd::usrp::multi_usrp::make(dev_addr);
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// single source
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// param: device_addr the address to identify the hardware
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// param: io_type the desired output data type
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// fc64: Complex floating point (64-bit floats) range [-1.0, +1.0].
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// fc32: Complex floating point (32-bit floats) range [-1.0, +1.0].
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// sc16: Complex signed integer (16-bit integers) range [-32768, +32767].
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// sc8: Complex signed integer (8-bit integers) range [-128, 127].
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if (item_type_ == "cbyte")
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{
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item_size_ = sizeof(lv_8sc_t);
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uhd_stream_args_ = uhd::stream_args_t("sc8");
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}
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else if (item_type_ == "cshort")
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{
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item_size_ = sizeof(lv_16sc_t);
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uhd_stream_args_ = uhd::stream_args_t("sc16");
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}
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else if (item_type_ == "gr_complex")
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{
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item_size_ = sizeof(gr_complex);
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uhd_stream_args_ = uhd::stream_args_t("fc32");
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}
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else
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{
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LOG(WARNING) << item_type_ << " unrecognized item type. Using cshort.";
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item_size_ = sizeof(lv_16sc_t);
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uhd_stream_args_ = uhd::stream_args_t("sc16");
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}
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// select the number of channels and the subdevice specifications
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for (int i = 0; i < RF_channels_; i++)
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{
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uhd_stream_args_.channels.push_back(i);
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}
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// 1.2 Make the UHD source object
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uhd_source_ = gr::uhd::usrp_source::make(dev_addr, uhd_stream_args_);
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// Set subdevice specification string for USRP family devices. It is composed of:
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// <motherboard slot name>:<daughterboard frontend name>
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// For motherboards: All USRP family motherboards have a first slot named A:.
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// The USRP1 has two daughterboard subdevice slots, known as A: and B:.
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// For daughterboards, see http://files.ettus.com/uhd_docs/manual/html/dboards.html
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// "0" is valid for DBSRX, DBSRX2, WBX Series
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// Dual channel example: "A:0 B:0"
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// TODO: Add support for multiple motherboards (i.e. four channels "A:0 B:0 A:1 B1")
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uhd_source_->set_subdev_spec(subdevice_, 0);
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// 2.1 set sampling clock reference
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// Set the clock source for the usrp device.
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// Options: internal, external, or MIMO
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uhd_source_->set_clock_source(clock_source_);
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// 2.2 set the sample rate for the usrp device
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uhd_source_->set_samp_rate(sample_rate_);
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// the actual sample rate may differ from the rate set
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std::cout << boost::format("Sampling Rate for the USRP device: %f [sps]...") % (uhd_source_->get_samp_rate()) << std::endl;
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LOG(INFO) << boost::format("Sampling Rate for the USRP device: %f [sps]...") % (uhd_source_->get_samp_rate());
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std::vector<std::string> sensor_names;
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for (int i = 0; i < RF_channels_; i++)
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{
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std::cout << "UHD RF CHANNEL #" << i << " SETTINGS" << std::endl;
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// 3. Tune the usrp device to the desired center frequency
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uhd_source_->set_center_freq(freq_.at(i), i);
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std::cout << boost::format("Actual USRP center freq.: %f [Hz]...") % (uhd_source_->get_center_freq(i)) << std::endl;
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LOG(INFO) << boost::format("Actual USRP center freq. set to: %f [Hz]...") % (uhd_source_->get_center_freq(i));
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// TODO: Assign the remnant IF from the PLL tune error
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std::cout << boost::format("PLL Frequency tune error %f [Hz]...") % (uhd_source_->get_center_freq(i) - freq_.at(i)) << std::endl;
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LOG(INFO) << boost::format("PLL Frequency tune error %f [Hz]...") % (uhd_source_->get_center_freq(i) - freq_.at(i));
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// 4. set the gain for the daughterboard
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uhd_source_->set_gain(gain_.at(i), i);
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std::cout << boost::format("Actual daughterboard gain set to: %f dB...") % uhd_source_->get_gain(i) << std::endl;
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LOG(INFO) << boost::format("Actual daughterboard gain set to: %f dB...") % uhd_source_->get_gain(i);
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//5. Set the bandpass filter on the RF frontend
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std::cout << boost::format("Setting RF bandpass filter bandwidth to: %f [Hz]...") % IF_bandwidth_hz_.at(i) << std::endl;
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uhd_source_->set_bandwidth(IF_bandwidth_hz_.at(i), i);
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//set the antenna (optional)
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//uhd_source_->set_antenna(ant);
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// We should wait? #include <boost/thread.hpp>
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// boost::this_thread::sleep(boost::posix_time::seconds(1));
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// Check out the status of the lo_locked sensor (boolean for LO lock state)
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sensor_names = uhd_source_->get_sensor_names(i);
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if (std::find(sensor_names.begin(), sensor_names.end(), "lo_locked") != sensor_names.end())
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{
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uhd::sensor_value_t lo_locked = uhd_source_->get_sensor("lo_locked", i);
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std::cout << boost::format("Check for front-end %s ...") % lo_locked.to_pp_string() << " is ";
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if (lo_locked.to_bool() == true)
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{
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std::cout << "Locked" << std::endl;
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}
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else
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{
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std::cout << "UNLOCKED!" << std::endl;
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}
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//UHD_ASSERT_THROW(lo_locked.to_bool());
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}
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}
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for (int i = 0; i < RF_channels_; i++)
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{
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if (samples_.at(i) != 0)
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{
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LOG(INFO) << "RF_channel " << i << " Send STOP signal after " << samples_.at(i) << " samples";
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valve_.push_back(gnss_sdr_make_valve(item_size_, samples_.at(i), queue_));
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DLOG(INFO) << "valve(" << valve_.at(i)->unique_id() << ")";
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}
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if (dump_.at(i))
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{
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LOG(INFO) << "RF_channel " << i << "Dumping output into file " << dump_filename_.at(i);
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file_sink_.push_back(gr::blocks::file_sink::make(item_size_, dump_filename_.at(i).c_str()));
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DLOG(INFO) << "file_sink(" << file_sink_.at(i)->unique_id() << ")";
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}
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}
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if (in_stream_ > 0)
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{
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LOG(ERROR) << "A signal source does not have an input stream";
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}
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if (out_stream_ > 1)
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{
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LOG(ERROR) << "This implementation only supports one output stream";
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}
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}
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UhdSignalSource::~UhdSignalSource() = default;
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void UhdSignalSource::connect(gr::top_block_sptr top_block)
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{
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for (int i = 0; i < RF_channels_; i++)
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{
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if (samples_.at(i) != 0)
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{
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top_block->connect(uhd_source_, i, valve_.at(i), 0);
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DLOG(INFO) << "connected usrp source to valve RF Channel " << i;
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if (dump_.at(i))
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{
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top_block->connect(valve_.at(i), 0, file_sink_.at(i), 0);
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DLOG(INFO) << "connected valve to file sink RF Channel " << i;
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}
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}
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else
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{
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if (dump_.at(i))
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{
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top_block->connect(uhd_source_, i, file_sink_.at(i), 0);
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DLOG(INFO) << "connected usrp source to file sink RF Channel " << i;
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}
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}
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}
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}
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void UhdSignalSource::disconnect(gr::top_block_sptr top_block)
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{
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for (int i = 0; i < RF_channels_; i++)
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{
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if (samples_.at(i) != 0)
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{
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top_block->disconnect(uhd_source_, i, valve_.at(i), 0);
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LOG(INFO) << "UHD source disconnected";
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if (dump_.at(i))
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{
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top_block->disconnect(valve_.at(i), 0, file_sink_.at(i), 0);
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}
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}
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else
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{
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if (dump_.at(i))
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{
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top_block->disconnect(uhd_source_, i, file_sink_.at(i), 0);
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}
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}
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}
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}
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gr::basic_block_sptr UhdSignalSource::get_left_block()
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{
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LOG(WARNING) << "Trying to get signal source left block.";
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//return gr_basic_block_sptr();
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return gr::uhd::usrp_source::sptr();
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}
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gr::basic_block_sptr UhdSignalSource::get_right_block()
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{
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return get_right_block(0);
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}
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gr::basic_block_sptr UhdSignalSource::get_right_block(int RF_channel)
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{
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//TODO: There is a incoherence here: Multichannel UHD is a single block with multiple outputs, but if the sample limit is enabled, the output is a multiple block!
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if (samples_.at(RF_channel) != 0)
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{
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return valve_.at(RF_channel);
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}
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return uhd_source_;
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}
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