GNU Radio block for interfacing with various radio hardware
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gr-osmosdr/lib/fcd/fcd_source_c.cc

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/* -*- c++ -*- */
/*
* Copyright 2013 Dimitri Stolnikov <horiz0n@gmx.net>
*
* GNU Radio 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, or (at your option)
* any later version.
*
* GNU Radio 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 GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#include <fstream>
#include <string>
#include <sstream>
#include <boost/assign.hpp>
#include <gnuradio/io_signature.h>
#include "fcd_source_c.h"
#include "arg_helpers.h"
using namespace boost::assign;
fcd_source_c_sptr make_fcd_source_c(const std::string &args)
{
return gnuradio::get_initial_sptr(new fcd_source_c(args));
}
/*
2 [V10 ]: USB-Audio - FUNcube Dongle V1.0
Hanlincrest Ltd. FUNcube Dongle V1.0 at usb-0000:00:1d.0-2, full speed
*/
/*
2 [V20 ]: USB-Audio - FUNcube Dongle V2.0
Hanlincrest Ltd. FUNcube Dongle V2.0 at usb-0000:00:1d.0-2, full speed
*/
typedef std::pair< fcd_source_c::dongle_type, std::string > device_t;
typedef std::vector< device_t > devices_t;
static devices_t _get_devices() /* FIXME: non-portable way to discover dongles */
{
devices_t devices;
std::string line;
std::ifstream cards( "/proc/asound/cards" );
if ( cards.is_open() )
{
while ( cards.good() )
{
getline (cards, line);
fcd_source_c::dongle_type type = fcd_source_c::FUNCUBE_UNKNOWN;
if ( line.find( "USB-Audio - FUNcube Dongle V1.0" ) != std::string::npos )
type = fcd_source_c::FUNCUBE_V1;
if ( line.find( "USB-Audio - FUNcube Dongle V2.0" ) != std::string::npos )
type = fcd_source_c::FUNCUBE_V2;
if ( type != fcd_source_c::FUNCUBE_UNKNOWN )
{
int id;
std::istringstream( line ) >> id;
std::ostringstream hw_id;
hw_id << "hw:" << id; /* build alsa identifier */
devices += device_t( type, hw_id.str() );
}
}
cards.close();
}
return devices;
}
fcd_source_c::fcd_source_c(const std::string &args) :
gr::hier_block2("fcd_source_c",
gr::io_signature::make(0, 0, 0),
gr::io_signature::make(1, 1, sizeof (gr_complex))),
_type( FUNCUBE_UNKNOWN )
{
std::string dev_name;
unsigned int dev_index = 0;
dict_t dict = params_to_dict(args);
if (dict.count("fcd"))
{
std::string value = dict["fcd"];
if ( value.length() )
{
try {
dev_index = boost::lexical_cast< unsigned int >( value );
} catch ( std::exception &ex ) {
throw std::runtime_error(
"Failed to use '" + value + "' as index: " + ex.what());
}
}
}
if (dict.count("device"))
{
dev_name = dict["device"];
_type = FUNCUBE_V1;
}
if (dict.count("type"))
{
_type = (dongle_type) boost::lexical_cast< int >( dict["type"] );
if ( FUNCUBE_V1 != _type && FUNCUBE_V2 != _type )
throw std::runtime_error("FUNcube Dongle type must be 1 or 2.");
}
devices_t devices = _get_devices();
if ( devices.size() )
{
if ( FUNCUBE_UNKNOWN == _type )
_type = devices[dev_index].first;
if ( dev_name.length() == 0 )
dev_name = devices[dev_index].second;
}
else if ( dev_name.length() == 0 )
throw std::runtime_error("No FUNcube Dongle found.");
std::cerr << "Using " << name() << " (" << dev_name << ")" << std::endl;
if ( FUNCUBE_V1 == _type )
{
_src_v1 = gr::fcdproplus::fcd::make( dev_name );
connect( _src_v1, 0, self(), 0 );
set_gain( 20, "LNA" );
set_gain( 12, "MIX" );
}
if ( FUNCUBE_V2 == _type )
{
_src_v2 = gr::fcdproplus::fcdproplus::make( dev_name );
connect( _src_v2, 0, self(), 0 );
set_gain( 1, "LNA" );
set_gain( 1, "MIX" );
set_gain( 15, "BB" );
}
}
fcd_source_c::~fcd_source_c()
{
}
std::vector< std::string > fcd_source_c::get_devices()
{
int id = 0;
std::vector< std::string > devices;
for (device_t dev : _get_devices())
{
std::string args = "fcd=" + boost::lexical_cast< std::string >( id++ );
if ( dev.first == fcd_source_c::FUNCUBE_V1 )
args += ",label='FUNcube Dongle V1.0'";
else if ( dev.first == fcd_source_c::FUNCUBE_V2 )
args += ",label='FUNcube Dongle V2.0'";
devices.push_back( args );
}
return devices;
}
std::string fcd_source_c::name()
{
if ( FUNCUBE_V1 == _type )
return "FUNcube Dongle V1.0";
else if ( FUNCUBE_V2 == _type )
return "FUNcube Dongle V2.0";
return "";
}
size_t fcd_source_c::get_num_channels( void )
{
return 1;
}
osmosdr::meta_range_t fcd_source_c::get_sample_rates( void )
{
osmosdr::meta_range_t range;
range += osmosdr::range_t( get_sample_rate() );
return range;
}
double fcd_source_c::set_sample_rate( double rate )
{
return get_sample_rate();
}
double fcd_source_c::get_sample_rate( void )
{
if ( FUNCUBE_V1 == _type )
return 96e3;
else if ( FUNCUBE_V2 == _type )
return 192e3;
return 0;
}
osmosdr::freq_range_t fcd_source_c::get_freq_range( size_t chan )
{
if ( FUNCUBE_V1 == _type )
return osmosdr::freq_range_t( 52e6, 2.2e9 );
else if ( FUNCUBE_V2 == _type )
return osmosdr::freq_range_t( 150e3, 2.05e9 );
return osmosdr::freq_range_t();
}
double fcd_source_c::set_center_freq( double freq, size_t chan )
{
if ( FUNCUBE_V1 == _type )
_src_v1->set_freq( float(freq) );
if ( FUNCUBE_V2 == _type )
_src_v2->set_freq( float(freq) );
_freq = freq;
return get_center_freq(chan);
}
double fcd_source_c::get_center_freq( size_t chan )
{
return _freq;
}
double fcd_source_c::set_freq_corr( double ppm, size_t chan )
{
if ( FUNCUBE_V1 == _type )
_src_v1->set_freq_corr( ppm );
if ( FUNCUBE_V2 == _type )
_src_v2->set_freq_corr( ppm );
_correct = ppm;
return get_freq_corr( chan );
}
double fcd_source_c::get_freq_corr( size_t chan )
{
return _correct;
}
std::vector<std::string> fcd_source_c::get_gain_names( size_t chan )
{
std::vector< std::string > names;
names += "LNA";
names += "MIX";
if ( FUNCUBE_V2 == _type )
names += "BB";
return names;
}
osmosdr::gain_range_t fcd_source_c::get_gain_range( size_t chan )
{
std::string name = "";
if ( FUNCUBE_V1 == _type )
name = "LNA"; /* use LNA gain for V1 dongle */
else if ( FUNCUBE_V2 == _type )
name = "BB"; /* use BB gain for V2 dongle */
return get_gain_range( name, chan );
}
osmosdr::gain_range_t fcd_source_c::get_gain_range( const std::string & name, size_t chan )
{
if ( FUNCUBE_V1 == _type )
{
if ( "LNA" == name )
return osmosdr::gain_range_t(-5, 30, 2.5);
else if ( "MIX" == name )
return osmosdr::gain_range_t(4, 12, 8);
}
else if ( FUNCUBE_V2 == _type )
{
if ( "LNA" == name )
return osmosdr::gain_range_t(0, 1, 1);
else if ( "MIX" == name )
return osmosdr::gain_range_t(0, 1, 1);
else if ( "BB" == name )
return osmosdr::gain_range_t(0, 59, 1);
}
return osmosdr::gain_range_t();
}
double fcd_source_c::set_gain( double gain, size_t chan )
{
if ( FUNCUBE_V1 == _type )
_lna_gain = set_gain( gain, "LNA" );
if ( FUNCUBE_V2 == _type )
_bb_gain = set_gain( gain, "BB" );
return get_gain(chan);
}
double fcd_source_c::set_gain( double gain, const std::string & name, size_t chan )
{
if ( FUNCUBE_V1 == _type )
{
if ( "LNA" == name )
{
_lna_gain = gain;
_src_v1->set_lna_gain(_lna_gain);
}
else if ( "MIX" == name )
{
_mix_gain = gain > 4 ? 12 : 4;
_src_v1->set_mixer_gain(_mix_gain);
}
}
if ( FUNCUBE_V2 == _type )
{
if ( "LNA" == name )
{
_lna_gain = gain > 0 ? 1 : 0;
_src_v2->set_lna(_lna_gain);
}
else if ( "MIX" == name )
{
_mix_gain = gain > 0 ? 1 : 0;
_src_v2->set_mixer_gain(_mix_gain);
}
else if ( "BB" == name )
{
_bb_gain = gain;
_src_v2->set_if_gain(_bb_gain);
}
}
return get_gain( name, chan );
}
double fcd_source_c::get_gain( size_t chan )
{
if ( FUNCUBE_V1 == _type )
return get_gain( "LNA", chan );
else if ( FUNCUBE_V2 == _type )
return get_gain( "BB", chan );
return 0;
}
double fcd_source_c::get_gain( const std::string & name, size_t chan )
{
if ( FUNCUBE_V1 == _type )
{
if ( "LNA" == name )
return _lna_gain;
else if ( "MIX" == name )
return _mix_gain;
}
else if ( FUNCUBE_V2 == _type )
{
if ( "LNA" == name )
return _lna_gain;
else if ( "MIX" == name )
return _mix_gain;
else if ( "BB" == name )
return _bb_gain;
}
return 0;
}
std::vector< std::string > fcd_source_c::get_antennas( size_t chan )
{
std::vector< std::string > antennas;
antennas += get_antenna(chan);
return antennas;
}
std::string fcd_source_c::set_antenna( const std::string & antenna, size_t chan )
{
return get_antenna(chan);
}
std::string fcd_source_c::get_antenna( size_t chan )
{
return "RX";
}