mirror of
https://github.com/gnss-sdr/gnss-sdr
synced 2024-12-15 12:40:35 +00:00
Fix GSS6450 signal source
This commit is contained in:
Antonio Ramos
parent
282c3d8659
commit
4873ea2b88
@ -1,12 +1,12 @@
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/*!
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* \file spir_file_signal_source.cc
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* \file spir_gss6450_file_signal_source.cc
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* \brief Implementation of a class that reads signals samples from a SPIR file
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* and adapts it to a SignalSourceInterface.
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* \author Fran Fabra, 2014 fabra(at)ice.csic.es
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* \author Antonio Ramos, 2017 antonio.ramos(at)cttc.es
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*
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* -------------------------------------------------------------------------
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*
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* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
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* Copyright (C) 2010-2017 (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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@ -35,16 +35,11 @@
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#include <iomanip>
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#include <iostream>
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#include <cstdio>
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#include <gflags/gflags.h>
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#include <glog/logging.h>
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#include "configuration_interface.h"
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using google::LogMessage;
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DEFINE_string(spir_gss6450_signal_source, "-",
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"If defined, path to the file containing the Spirent GSS6450 signal samples (overrides the configuration file)");
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SpirGSS6450FileSignalSource::SpirGSS6450FileSignalSource(ConfigurationInterface* configuration,
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std::string role, unsigned int in_streams, unsigned int out_streams, gr::msg_queue::sptr queue) :
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@ -55,31 +50,35 @@ SpirGSS6450FileSignalSource::SpirGSS6450FileSignalSource(ConfigurationInterface*
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item_type_ = "int";
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samples_ = configuration->property(role + ".samples", 0);
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sampling_frequency_ = configuration->property(role + ".sampling_frequency", 0);
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sampling_frequency_ = configuration->property(role + ".sampling_frequency", 0.0);
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filename_ = configuration->property(role + ".filename", default_filename);
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// override value with commandline flag, if present
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if (FLAGS_spir_gss6450_signal_source.compare("-") != 0) filename_= FLAGS_spir_gss6450_signal_source;
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repeat_ = configuration->property(role + ".repeat", false);
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dump_ = configuration->property(role + ".dump", false);
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dump_filename_ = configuration->property(role + ".dump_filename", default_dump_filename);
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enable_throttle_control_ = configuration->property(role + ".enable_throttle_control", false);
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adc_bits_ = configuration->property(role + ".adc_bits", 4);
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n_channels_ = configuration->property(role + ".RF_channels", 1);
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n_channels_ = configuration->property(role + ".total_channels", 1);
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sel_ch_ = configuration->property(role + ".sel_ch", 1);
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item_size_ = sizeof(int);
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long bytes_seek = 65536;
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long bytes_seek = configuration->property(role + ".bytes_to_skip", 65536);
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double sample_size_byte = static_cast<double>(adc_bits_) / 4.0;
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int samples_per_item = 16 / adc_bits_;
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if(sel_ch_ > n_channels_) { LOG(WARNING) << "Invalid RF channel selection"; }
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if(n_channels_ > 1)
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{
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for(unsigned int i = 0; i < (n_channels_ - 1); i++)
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{
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null_sinks_.push_back(gr::blocks::null_sink::make(item_size_));
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}
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std::cout << "NUMBER OF NULL SINKS = " << null_sinks_.size() << std::endl;
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}
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try
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{
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file_source_ = gr::blocks::file_source::make(item_size_, filename_.c_str(), repeat_);
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file_source_->seek(bytes_seek, SEEK_SET);
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unpack_ii_ = gr::blocks::packed_to_unpacked_ii::make(adc_bits_, gr::GR_MSB_FIRST);
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unpack_spir_ = make_unpack_spir_gss6450_samples(n_channels_, sel_ch_, samples_per_item, item_size_);
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file_source_ = gr::blocks::file_source::make(item_size_, filename_.c_str(), repeat_);
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file_source_->seek(bytes_seek / item_size_, SEEK_SET);
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unpack_spir_ = make_unpack_spir_gss6450_samples(adc_bits_);
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deint_ = gr::blocks::deinterleave::make(item_size_);
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endian_ = gr::blocks::endian_swap::make(item_size_);
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}
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catch (const std::exception &e)
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{
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@ -103,14 +102,13 @@ SpirGSS6450FileSignalSource::SpirGSS6450FileSignalSource(ConfigurationInterface*
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<< filename_.c_str() << ", exiting the program.";
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throw(e);
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}
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DLOG(INFO) << "file_source(" << file_source_->unique_id() << ")";
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if(samples_ == 0) // read all file
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{
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/*!
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* BUG workaround: The GNU Radio file source does not stop the receiver after reaching the End of File.
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* A possible solution is to compute the file length in samples using file size, excluding the last 100 milliseconds, and enable always the
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* A possible solution is to compute the file length in samples using file size, excluding the last 2 milliseconds, and enable always the
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* valve block
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*/
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std::ifstream file (filename_.c_str(), std::ios::in | std::ios::binary | std::ios::ate);
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@ -119,7 +117,7 @@ SpirGSS6450FileSignalSource::SpirGSS6450FileSignalSource(ConfigurationInterface*
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if (file.is_open())
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{
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size = file.tellg();
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LOG(INFO) << "Total samples in the file= " << floor(static_cast<double>(size) / static_cast<double>(item_size()));
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LOG(INFO) << "Total samples in the file= " << floor(static_cast<double>(size) / static_cast<double>(item_size_));
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}
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else
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{
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@ -133,13 +131,13 @@ SpirGSS6450FileSignalSource::SpirGSS6450FileSignalSource(ConfigurationInterface*
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if(size > 0)
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{
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samples_ = floor(static_cast<double>(size - bytes_seek) / (sample_size_byte * static_cast<double>(n_channels_)));
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samples_ = samples_- ceil(0.002 * static_cast<double>(sampling_frequency_)); //process all the samples available in the file excluding the last 2 ms
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samples_ = static_cast<unsigned long long>(floor(static_cast<double>(size - bytes_seek) / (sample_size_byte * static_cast<double>(n_channels_))));
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samples_ = samples_- static_cast<unsigned long long>(ceil(0.002 * sampling_frequency_)); //process all the samples available in the file excluding the last 2 ms
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}
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}
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CHECK(samples_ > 0) << "File does not contain enough samples to process.";
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double signal_duration_s = static_cast<double>(samples_) * ( 1 /static_cast<double>(sampling_frequency_));
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double signal_duration_s = static_cast<double>(samples_) / sampling_frequency_;
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LOG(INFO) << "Total number samples to be processed= " << samples_ << " GNSS signal duration= " << signal_duration_s << " [s]";
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std::cout << "GNSS signal recorded time to be processed: " << signal_duration_s << " [s]" << std::endl;
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@ -149,9 +147,9 @@ SpirGSS6450FileSignalSource::SpirGSS6450FileSignalSource(ConfigurationInterface*
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if (dump_)
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{
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sink_ = gr::blocks::file_sink::make(sizeof(gr_complex), dump_filename_.c_str());
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//sink_test = gr::blocks::file_sink::make(sizeof(int), "/home/aramos/Escritorio/test_int.dat");
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DLOG(INFO) << "file_sink(" << sink_->unique_id() << ")";
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}
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if (enable_throttle_control_)
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{
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throttle_ = gr::blocks::throttle::make(sizeof(gr_complex), sampling_frequency_);
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@ -167,36 +165,46 @@ SpirGSS6450FileSignalSource::SpirGSS6450FileSignalSource(ConfigurationInterface*
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}
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SpirGSS6450FileSignalSource::~SpirGSS6450FileSignalSource()
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{}
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void SpirGSS6450FileSignalSource::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(file_source_, 0, deint_, 0);
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/*
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top_block->connect(deint_, sel_ch_ - 1, endian_ ,0);
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top_block->connect(endian_, 0, unpack_spir_, 0);
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*/
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top_block->connect(deint_, sel_ch_ - 1, unpack_spir_, 0);
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if(n_channels_ > 1)
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{
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unsigned int aux = 0;
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for(unsigned int i = 0; i < n_channels_; i++)
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{
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if(i != (sel_ch_ - 1))
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{
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top_block->connect(deint_, i, null_sinks_.at(aux), 0);
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aux++;
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}
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}
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}
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if (enable_throttle_control_)
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{
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top_block->connect(file_source_, 0, unpack_ii_, 0);
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top_block->connect(unpack_ii_, 0, unpack_spir_, 0);
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top_block->connect(unpack_spir_, 0, throttle_, 0);
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top_block->connect(throttle_, 0, valve_, 0);
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}
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else
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{
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top_block->connect(file_source_, 0, unpack_ii_, 0);
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top_block->connect(unpack_ii_, 0, unpack_spir_, 0);
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top_block->connect(unpack_spir_, 0, valve_, 0);
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}
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if(dump_)
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{
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top_block->connect(valve_, 0, 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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top_block->connect(valve_, 0, sink_, 0);
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//top_block->connect(deint_, sel_ch_ - 1, sink_test, 0);
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}
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}
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else
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{
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@ -205,40 +213,43 @@ void SpirGSS6450FileSignalSource::connect(gr::top_block_sptr top_block)
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}
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void SpirGSS6450FileSignalSource::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(file_source_, 0, deint_, 0);
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top_block->disconnect(deint_, sel_ch_ - 1, unpack_spir_, 0);
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if(n_channels_ > 1)
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{
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if (enable_throttle_control_)
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unsigned int aux = 0;
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for(unsigned int i = 0; i < n_channels_; i++)
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{
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if(i != (sel_ch_ - 1))
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{
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top_block->disconnect(file_source_, 0, unpack_ii_, 0);
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top_block->disconnect(unpack_ii_, 0, unpack_spir_, 0);
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top_block->disconnect(unpack_spir_, 0, throttle_, 0);
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top_block->disconnect(throttle_, 0, valve_, 0);
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if (dump_)
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{
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top_block->disconnect(valve_, 0, sink_, 0);
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}
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}
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else
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{
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top_block->disconnect(file_source_, 0, unpack_ii_, 0);
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top_block->disconnect(unpack_ii_, 0, unpack_spir_, 0);
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top_block->disconnect(unpack_spir_, 0, valve_, 0);
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if (dump_)
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{
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top_block->disconnect(valve_, 0, sink_, 0);
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}
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top_block->disconnect(deint_, i, null_sinks_.at(aux), 0);
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aux++;
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}
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}
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}
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if (enable_throttle_control_)
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{
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top_block->disconnect(unpack_spir_, 0, throttle_, 0);
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top_block->disconnect(throttle_, 0, valve_, 0);
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}
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else
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{
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top_block->disconnect(unpack_spir_, 0, valve_, 0);
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}
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if(dump_)
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{
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top_block->disconnect(valve_, 0, sink_, 0);
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//top_block->disconnect(deint_, sel_ch_ - 1, sink_test, 0);
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}
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}
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else
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{
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LOG(WARNING) << "Nothing to disconnect";
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}
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{
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LOG(WARNING) << "Nothing to disconnect";
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}
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}
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@ -1,12 +1,12 @@
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/*!
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* \file spir_file_signal_source.h
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* \file spir_gss6450_file_signal_source.h
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* \brief Implementation of a class that reads signals samples from a SPIR file
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* and adapts it to a SignalSourceInterface.
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* \author Fran Fabra, 2014 fabra(at)ice.csic.es
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* \author Antonio Ramos, 2017 antonio.ramos(at)cttc.es
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*
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* -------------------------------------------------------------------------
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*
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* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
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* Copyright (C) 2010-2017 (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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@ -33,10 +33,14 @@
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#define GNSS_SDR_SPIR_GSS6450_FILE_SIGNAL_SOURCE_H_
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#include <string>
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#include <vector>
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#include <gnuradio/blocks/file_source.h>
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#include <gnuradio/blocks/file_sink.h>
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#include <gnuradio/blocks/throttle.h>
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#include <gnuradio/blocks/packed_to_unpacked_ii.h>
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#include <gnuradio/blocks/deinterleave.h>
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#include <gnuradio/blocks/null_sink.h>
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#include <gnuradio/blocks/endian_swap.h>
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#include <gnuradio/hier_block2.h>
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#include <gnuradio/msg_queue.h>
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#include "gnss_block_interface.h"
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@ -104,10 +108,11 @@ public:
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private:
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unsigned long long samples_;
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long sampling_frequency_;
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double sampling_frequency_;
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std::string filename_;
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bool repeat_;
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bool dump_;
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bool enable_throttle_control_;
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std::string dump_filename_;
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std::string role_;
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std::string item_type_;
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@ -117,14 +122,16 @@ private:
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unsigned int n_channels_;
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unsigned int sel_ch_;
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gr::blocks::file_source::sptr file_source_;
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gr::blocks::packed_to_unpacked_ii::sptr unpack_ii_;
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gr::blocks::deinterleave::sptr deint_;
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gr::blocks::endian_swap::sptr endian_;
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std::vector<gr::blocks::null_sink::sptr> null_sinks_;
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unpack_spir_gss6450_samples_sptr unpack_spir_;
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boost::shared_ptr<gr::block> valve_;
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gr::blocks::file_sink::sptr sink_;
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gr::blocks::file_sink::sptr sink_test;
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gr::blocks::throttle::sptr throttle_;
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gr::msg_queue::sptr queue_;
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size_t item_size_;
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bool enable_throttle_control_;
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};
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#endif /*GNSS_SDR_SPIR_GSS6450_FILE_SIGNAL_SOURCE_H_*/
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@ -34,123 +34,90 @@
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unpack_spir_gss6450_samples_sptr make_unpack_spir_gss6450_samples(unsigned int n_chann, unsigned int sel_ch, int samp_item, size_t item_size)
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unpack_spir_gss6450_samples_sptr make_unpack_spir_gss6450_samples(unsigned int adc_nbit)
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{
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return unpack_spir_gss6450_samples_sptr(new unpack_spir_gss6450_samples(n_chann, sel_ch, samp_item, item_size));
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return unpack_spir_gss6450_samples_sptr(new unpack_spir_gss6450_samples(adc_nbit));
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}
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unpack_spir_gss6450_samples::unpack_spir_gss6450_samples(
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unsigned int n_chann, unsigned int sel_ch, int samp_item, size_t item_size) : gr::block("unpack_spir_gss6450_samples",
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unpack_spir_gss6450_samples::unpack_spir_gss6450_samples(unsigned int adc_nbit) : gr::sync_interpolator("unpack_spir_gss6450_samples",
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gr::io_signature::make(1, 1, sizeof(int)),
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gr::io_signature::make(1, 1, sizeof(gr_complex)))
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gr::io_signature::make(1, 1, sizeof(gr_complex)), 16 / adc_nbit)
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{
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d_channels = n_chann;
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d_sel_ch = sel_ch;
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item_size_ = item_size;
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ch_processing = 1;
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d_samp_item = samp_item;
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samp_frame = 0;
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adc_bits = 16 / d_samp_item;
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i_ = true;
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new_sample = false;
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adc_bits = adc_nbit;
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i_data = 0;
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q_data = 0;
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samples_per_int = 16 / adc_bits;
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if(adc_bits == 2)
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{
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mask_data = 0x00000003;
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map_ = {0, 1, -2, -1};
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}
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else
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{
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mask_data = 0x0000000F;
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map_ = {0, 1, 2, 3, 4, 5, 6, 7, -8, -7, -6, -5, -4, -3, -2, -1};
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}
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}
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unpack_spir_gss6450_samples::~unpack_spir_gss6450_samples()
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{}
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void unpack_spir_gss6450_samples::process_sample(gr_complex* out)
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void unpack_spir_gss6450_samples::process_sample(gr_complex& out)
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{
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gr_complex result = gr_complex(0.5, 0.5);
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out = gr_complex(0.5, 0.5);
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compute_two_complement(i_data);
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compute_two_complement(q_data);
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result += gr_complex(static_cast<float>(i_data), static_cast<float>(q_data));
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*out = result;
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out += gr_complex(static_cast<float>(i_data), static_cast<float>(q_data));
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}
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int unpack_spir_gss6450_samples::general_work(int noutput_items,
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gr_vector_const_void_star &input_items,
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gr_vector_void_star &output_items)
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int unpack_spir_gss6450_samples::work(int noutput_items,
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gr_vector_const_void_star &input_items, gr_vector_void_star &output_items)
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{
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const int* in = reinterpret_cast<const int*>(input_items[0]);
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gr_complex* out = reinterpret_cast<gr_complex*>(output_items[0]);
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int samples_produced = 0;
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unsigned int n_sample = 0;
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unsigned int in_counter = 0;
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for(int i = 0; i < noutput_items; i++)
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{
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if(ch_processing == d_sel_ch)
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int sample_aux = in[in_counter];
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//reverse_bits(sample_aux);
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int aux_i = sample_aux;
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int aux_q = sample_aux;
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int i_shift = adc_bits * 2 * (samples_per_int - n_sample - 1) + adc_bits;
|
||||
int q_shift = adc_bits * 2 * (samples_per_int - n_sample - 1);
|
||||
i_data = (aux_i >> i_shift) & mask_data;
|
||||
q_data = (aux_q >> q_shift) & mask_data;
|
||||
process_sample(out[samples_per_int * in_counter + samples_per_int - n_sample - 1]);
|
||||
n_sample++;
|
||||
if(n_sample == samples_per_int)
|
||||
{
|
||||
if(i_)
|
||||
{
|
||||
i_data = in[i];
|
||||
swap_data(i_data);
|
||||
i_ = false;
|
||||
}
|
||||
else
|
||||
{
|
||||
q_data = in[i];
|
||||
swap_data(q_data);
|
||||
i_ = true;
|
||||
process_sample(out);
|
||||
out++;
|
||||
samples_produced++;
|
||||
new_sample = true;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
if(i_) { i_ = false;}
|
||||
else
|
||||
{
|
||||
i_ = true;
|
||||
new_sample = true;
|
||||
}
|
||||
}
|
||||
if(new_sample)
|
||||
{
|
||||
new_sample = false;
|
||||
samp_frame++;
|
||||
if(samp_frame == d_samp_item)
|
||||
{
|
||||
samp_frame = 0;
|
||||
ch_processing++;
|
||||
if(ch_processing > d_channels) { ch_processing = 1; }
|
||||
}
|
||||
n_sample = 0;
|
||||
in_counter++;
|
||||
}
|
||||
}
|
||||
consume_each(noutput_items);
|
||||
return samples_produced;
|
||||
return noutput_items;
|
||||
}
|
||||
|
||||
void unpack_spir_gss6450_samples::swap_data(int& data)
|
||||
void unpack_spir_gss6450_samples::reverse_bits(int& data)
|
||||
{
|
||||
int result = 0;
|
||||
int aux = data;
|
||||
int mask = 1;
|
||||
for (int i = 0; i < adc_bits; i++)
|
||||
unsigned int v = data; // input bits to be reversed
|
||||
unsigned int r = v; // r will be reversed bits of v; first get LSB of v
|
||||
int s = sizeof(v) * CHAR_BIT - 1; // extra shift needed at end
|
||||
|
||||
for (v >>= 1; v; v >>= 1)
|
||||
{
|
||||
result = result << 1;
|
||||
result += (aux & mask);
|
||||
aux = aux >> 1;
|
||||
r <<= 1;
|
||||
r |= v & 1;
|
||||
s--;
|
||||
}
|
||||
data = result;
|
||||
r <<= s; // shift when v's highest bits are zero
|
||||
data = r;
|
||||
}
|
||||
|
||||
void unpack_spir_gss6450_samples::compute_two_complement(int& data)
|
||||
{
|
||||
int result = 0;
|
||||
int mask = 1;
|
||||
for(int i = 0; i < (adc_bits - 1); i++)
|
||||
{
|
||||
result = result << 1;
|
||||
result += (data >> i) & mask;
|
||||
}
|
||||
if((data >> (adc_bits - 1)) == 1)
|
||||
{
|
||||
if(adc_bits == 2) { result -= 2; }
|
||||
else { result -= 8; }
|
||||
}
|
||||
data = result;
|
||||
data = map_[data];
|
||||
}
|
||||
|
||||
@ -31,40 +31,35 @@
|
||||
#ifndef GNSS_SDR_UNPACK_SPIR_GSS6450_SAMPLES_H
|
||||
#define GNSS_SDR_UNPACK_SPIR_GSS6450_SAMPLES_H
|
||||
|
||||
#include <gnuradio/block.h>
|
||||
#include <gnuradio/sync_interpolator.h>
|
||||
#include <vector>
|
||||
|
||||
class unpack_spir_gss6450_samples;
|
||||
|
||||
typedef boost::shared_ptr<unpack_spir_gss6450_samples> unpack_spir_gss6450_samples_sptr;
|
||||
|
||||
unpack_spir_gss6450_samples_sptr make_unpack_spir_gss6450_samples(unsigned int n_chann, unsigned int sel_ch, int samp_item, size_t item_size);
|
||||
unpack_spir_gss6450_samples_sptr make_unpack_spir_gss6450_samples(unsigned int adc_nbit);
|
||||
|
||||
|
||||
class unpack_spir_gss6450_samples: public gr::block
|
||||
class unpack_spir_gss6450_samples: public gr::sync_interpolator
|
||||
{
|
||||
public:
|
||||
int general_work (int noutput_items,
|
||||
gr_vector_const_void_star &input_items,
|
||||
gr_vector_void_star &output_items);
|
||||
friend unpack_spir_gss6450_samples_sptr make_unpack_spir_gss6450_samples_sptr(unsigned int n_chann, unsigned int sel_ch, int samp_item, size_t item_size);
|
||||
unpack_spir_gss6450_samples(unsigned int n_chann, unsigned int sel_ch, int samp_item, size_t item_size);
|
||||
int work(int noutput_items,
|
||||
gr_vector_const_void_star &input_items, gr_vector_void_star &output_items);
|
||||
friend unpack_spir_gss6450_samples_sptr make_unpack_spir_gss6450_samples_sptr(unsigned int adc_nbit);
|
||||
unpack_spir_gss6450_samples(unsigned int adc_nbit);
|
||||
~unpack_spir_gss6450_samples();
|
||||
|
||||
private:
|
||||
unsigned int d_channels;
|
||||
unsigned int d_sel_ch;
|
||||
unsigned int ch_processing;
|
||||
int d_samp_item;
|
||||
int samp_frame;
|
||||
int adc_bits;
|
||||
size_t item_size_;
|
||||
void process_sample(gr_complex* out);
|
||||
void swap_data(int& data);
|
||||
unsigned int adc_bits;
|
||||
unsigned int samples_per_int;
|
||||
void process_sample(gr_complex& out);
|
||||
void compute_two_complement(int& data);
|
||||
bool i_;
|
||||
bool new_sample;
|
||||
void reverse_bits(int& data);
|
||||
int i_data;
|
||||
int q_data;
|
||||
int mask_data;
|
||||
std::vector<int> map_;
|
||||
};
|
||||
|
||||
#endif
|
||||
|
||||
Loading…
Reference in New Issue
Block a user