mirror of https://github.com/gnss-sdr/gnss-sdr
228 lines
8.2 KiB
C++
228 lines
8.2 KiB
C++
/*!
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* \file osmosdr_signal_source.cc
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* \brief Signal source for the Realtek RTL2832U USB dongle DVB-T receiver
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* (see https://osmocom.org/projects/rtl-sdr/wiki for more information)
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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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* GNSS-SDR is a Global Navigation Satellite System software-defined receiver.
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* This file is part of GNSS-SDR.
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*
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* Copyright (C) 2010-2020 (see AUTHORS file for a list of contributors)
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* SPDX-License-Identifier: GPL-3.0-or-later
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*
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* -----------------------------------------------------------------------------
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*/
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#include "osmosdr_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_string_literals.h"
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#include "gnss_sdr_valve.h"
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#include <glog/logging.h>
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#include <gnuradio/blocks/file_sink.h>
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#include <iostream>
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#include <utility>
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using namespace std::string_literals;
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OsmosdrSignalSource::OsmosdrSignalSource(const ConfigurationInterface* configuration,
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const std::string& role, unsigned int in_stream, unsigned int out_stream,
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Concurrent_Queue<pmt::pmt_t>* queue)
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: SignalSourceBase(configuration, role, "Osmosdr_Signal_Source"s), in_stream_(in_stream), out_stream_(out_stream)
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{
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// DUMP PARAMETERS
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const std::string empty;
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const std::string default_dump_file("./data/signal_source.dat");
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const std::string default_item_type("gr_complex");
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samples_ = configuration->property(role + ".samples", static_cast<int64_t>(0));
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dump_ = configuration->property(role + ".dump", false);
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dump_filename_ = configuration->property(role + ".dump_filename",
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default_dump_file);
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// OSMOSDR Driver parameters
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AGC_enabled_ = configuration->property(role + ".AGC_enabled", true);
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freq_ = configuration->property(role + ".freq", GPS_L1_FREQ_HZ);
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gain_ = configuration->property(role + ".gain", 40.0);
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rf_gain_ = configuration->property(role + ".rf_gain", 40.0);
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if_gain_ = configuration->property(role + ".if_gain", 40.0);
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sample_rate_ = configuration->property(role + ".sampling_frequency", 2.0e6);
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item_type_ = configuration->property(role + ".item_type", default_item_type);
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osmosdr_args_ = configuration->property(role + ".osmosdr_args", std::string());
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antenna_ = configuration->property(role + ".antenna", empty);
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if (item_type_ == "short")
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{
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item_size_ = sizeof(int16_t);
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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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// 1. Make the driver instance
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OsmosdrSignalSource::driver_instance();
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// For LimeSDR: Set RX antenna
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if (!antenna_.empty())
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{
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osmosdr_source_->set_antenna(antenna_, 0);
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std::cout << "Set RX Antenna: " << osmosdr_source_->get_antenna(0) << '\n';
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LOG(INFO) << "Set RX Antenna: " << osmosdr_source_->get_antenna(0);
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}
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// 2 set sampling rate
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osmosdr_source_->set_sample_rate(sample_rate_);
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std::cout << "Actual RX Rate: " << osmosdr_source_->get_sample_rate() << " [SPS]...\n";
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LOG(INFO) << "Actual RX Rate: " << osmosdr_source_->get_sample_rate() << " [SPS]...";
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// 3. set rx frequency
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osmosdr_source_->set_center_freq(freq_);
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std::cout << "Actual RX Freq: " << osmosdr_source_->get_center_freq() << " [Hz]...\n";
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LOG(INFO) << "Actual RX Freq: " << osmosdr_source_->get_center_freq() << " [Hz]...";
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// TODO: Assign the remnant IF from the PLL tune error
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std::cout << "PLL Frequency tune error: " << osmosdr_source_->get_center_freq() - freq_ << " [Hz]...\n";
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LOG(INFO) << "PLL Frequency tune error: " << osmosdr_source_->get_center_freq() - freq_ << " [Hz]...\n";
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// 4. set rx gain
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if (this->AGC_enabled_ == true)
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{
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osmosdr_source_->set_gain_mode(true);
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std::cout << "AGC enabled\n";
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LOG(INFO) << "AGC enabled";
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}
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else
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{
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osmosdr_source_->set_gain_mode(false);
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osmosdr_source_->set_gain(gain_, 0);
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osmosdr_source_->set_if_gain(rf_gain_, 0);
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osmosdr_source_->set_bb_gain(if_gain_, 0);
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if (!osmosdr_args_.empty() && (osmosdr_args_.find("bladerf") != std::string::npos))
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{
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std::cout << "Actual LNA Gain: " << osmosdr_source_->get_gain("LNA", 0) << " dB...\n";
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std::cout << "Actual VGA1 Gain: " << osmosdr_source_->get_gain("VGA1", 0) << " dB...\n";
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std::cout << "Actual VGA2 Gain: " << osmosdr_source_->get_gain("VGA2", 0) << " dB...\n";
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}
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else
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{
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std::cout << "Actual RX Gain: " << osmosdr_source_->get_gain() << " dB...\n";
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LOG(INFO) << "Actual RX Gain: " << osmosdr_source_->get_gain() << " dB...";
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}
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}
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// Get actual bandwidth
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std::cout << "Actual Bandwidth: " << osmosdr_source_->get_bandwidth(0) << " [Hz]...\n";
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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 short.";
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item_size_ = sizeof(int16_t);
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}
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if (samples_ != 0)
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{
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DLOG(INFO) << "Send STOP signal after " << samples_ << " samples";
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valve_ = gnss_sdr_make_valve(item_size_, samples_, queue);
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DLOG(INFO) << "valve(" << valve_->unique_id() << ")";
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}
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if (dump_)
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{
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DLOG(INFO) << "Dumping output into file " << dump_filename_;
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file_sink_ = gr::blocks::file_sink::make(item_size_, dump_filename_.c_str());
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DLOG(INFO) << "file_sink(" << file_sink_->unique_id() << ")";
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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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void OsmosdrSignalSource::driver_instance()
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{
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try
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{
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if (!osmosdr_args_.empty())
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{
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std::cout << "OsmoSdr arguments: " << osmosdr_args_ << '\n';
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LOG(INFO) << "OsmoSdr arguments: " << osmosdr_args_;
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}
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osmosdr_source_ = osmosdr::source::make(osmosdr_args_);
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}
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catch (const boost::exception& e)
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{
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LOG(WARNING) << "Boost exception: " << boost::diagnostic_information(e);
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throw std::invalid_argument("Wrong OsmoSdr arguments");
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}
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}
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void OsmosdrSignalSource::connect(gr::top_block_sptr top_block)
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{
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if (samples_ != 0)
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{
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top_block->connect(osmosdr_source_, 0, valve_, 0);
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DLOG(INFO) << "connected osmosdr source to valve";
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if (dump_)
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{
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top_block->connect(valve_, 0, file_sink_, 0);
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DLOG(INFO) << "connected valve to file sink";
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}
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}
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else
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{
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if (dump_)
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{
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top_block->connect(osmosdr_source_, 0, file_sink_, 0);
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DLOG(INFO) << "connected osmosdr source to file sink";
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}
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}
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}
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void OsmosdrSignalSource::disconnect(gr::top_block_sptr top_block)
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{
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if (samples_ != 0)
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{
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top_block->disconnect(osmosdr_source_, 0, valve_, 0);
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if (dump_)
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{
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top_block->disconnect(valve_, 0, file_sink_, 0);
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}
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}
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else
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{
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if (dump_)
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{
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top_block->disconnect(osmosdr_source_, 0, file_sink_, 0);
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}
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}
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}
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gr::basic_block_sptr OsmosdrSignalSource::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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}
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gr::basic_block_sptr OsmosdrSignalSource::get_right_block()
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{
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if (samples_ != 0)
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{
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return valve_;
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}
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else
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{
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return osmosdr_source_;
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}
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}
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