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/* -*- c++ -*- */
/*
* Copyright 2020 dl1ksv.
*
* SPDX-License-Identifier: GPL-3.0-or-later
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gnuradio/blocks/float_to_complex.h>
#include <gnuradio/io_signature.h>
#include "fcd_impl.h"
#include <exception>
#include <fstream>
#include <iostream>
namespace gr {
namespace funcube {
fcd::sptr fcd::make(const std::string device_name)
{
return gnuradio::make_block_sptr<fcd_impl>(device_name);
}
/*
* The private constructor
*/
fcd_impl::fcd_impl(const std::string user_device_name)
: gr::hier_block2("fcd",
gr::io_signature::make(0, 0, 0),
gr::io_signature::make(1, 1, sizeof(gr_complex))),
d_freq_corr(-120.)
{
bool found=gr::configure_default_loggers(this->d_logger, this->d_debug_logger, "Funcube Pro");
if( !found)
throw std::runtime_error("logger not found.");
std::string device_name;
bool success;
gr::blocks::float_to_complex::sptr f2c;
success = false;
d_freq_req = 0;
this->d_logger->info("Start init fcd");
if (!user_device_name.empty()) {
try {
/* Audio source; sample rate fixed at 96kHz */
fcd_audio = gr::audio::source::make(96000, user_device_name, true);
success = true;
} catch (std::exception const&) {
this->d_logger->info("Could not open device: {:s}",user_device_name);
success = false;
}
}
if (success) {
device_name = user_device_name;
} else {
device_name.clear();
std::string line;
std::ifstream cards("/proc/asound/cards");
if (cards.is_open()) {
while (cards.good()) {
getline(cards, line);
if (line.find("USB-Audio - FUNcube Dongle V1.0") != std::string::npos) {
int id;
std::istringstream(line) >> id;
std::ostringstream hw_id;
hw_id << "hw:" << id << ",0"; // build alsa identifier
device_name = hw_id.str();
}
}
cards.close();
if (device_name.empty()) {
throw std::runtime_error("No FunCube Dongle V1.0 found.");
}
} else {
throw std::runtime_error("Alsa not found.");
}
/* Audio source; sample rate fixed at 96kHz */
fcd_audio = gr::audio::source::make(96000, device_name, true);
}
if (success) {
this->d_logger->info("Audio device {:s} opened", device_name);
} else {
this->d_logger->info("Funcube Dongle found as: {:s}", device_name);
}
/* block to convert stereo audio to a complex stream */
f2c = gr::blocks::float_to_complex::make(1);
connect(fcd_audio, 0, f2c, 0);
connect(fcd_audio, 1, f2c, 1);
connect(f2c, 0, self(), 0);
fcd_control_block = fcd_control::make();
message_port_register_hier_in(pmt::mp("freq"));
msg_connect(self(), pmt::mp("freq"), fcd_control_block, pmt::mp("freq"));
}
/*
* Our virtual destructor.
*/
fcd_impl::~fcd_impl() {}
// Set frequency with Hz resolution (type float)
void fcd_impl::set_freq(double freq)
{
double setfreq;
if (d_freq_req == freq)
return; // Frequency did not change
d_freq_req = freq;
if (d_freq_corr != 0.)
setfreq = (1. + d_freq_corr / 1000000.) * freq;
else
setfreq = freq;
fcd_control_block->set_freq(setfreq);
}
// Set LNA gain
void fcd_impl::set_lna_gain(float gain) { fcd_control_block->set_lna_gain(gain); }
// Set mixer gain
void fcd_impl::set_mixer_gain(float gain) { fcd_control_block->set_mixer_gain(gain); }
// Set new frequency correction
void fcd_impl::set_freq_corr(double ppm)
{
double freq;
if (d_freq_corr == ppm)
return;
d_freq_corr = ppm;
// re-tune with new correction value
this->d_logger->info("Set frequency correction to: {} ppm ", ppm);
freq = d_freq_req;
d_freq_req = 0;
set_freq(freq);
}
// Set DC offset correction.
void fcd_impl::set_dc_corr(double _dci, double _dcq)
{
fcd_control_block->set_dc_corr(_dci, _dcq);
}
// Set IQ phase and gain balance.
void fcd_impl::set_iq_corr(double _gain, double _phase)
{
fcd_control_block->set_iq_corr(_gain, _phase);
}
} /* namespace funcube */
} /* namespace gr */
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