airspy: query supported samplerates from the firmware

soapy_support
Dimitri Stolnikov 8 years ago
parent 3916b5bc4f
commit 8d25584da3
  1. 51
      lib/airspy/airspy_source_c.cc
  2. 1
      lib/airspy/airspy_source_c.h

@ -29,6 +29,7 @@
#include <stdexcept>
#include <iostream>
#include <algorithm>
#include <boost/assign.hpp>
#include <boost/format.hpp>
@ -109,9 +110,25 @@ airspy_source_c::airspy_source_c (const std::string &args)
ret = airspy_board_partid_serialno_read( _dev, &serial_number );
AIRSPY_THROW_ON_ERROR(ret, "Failed to read serial number")
#endif
std::cerr << "Using " << airspy_board_id_name(airspy_board_id(board_id)) << " "
<< "with firmware " << version << " "
<< std::endl;
uint32_t num_rates;
airspy_get_samplerates(_dev, &num_rates, 0);
uint32_t *samplerates = (uint32_t *) malloc(num_rates * sizeof(uint32_t));
airspy_get_samplerates(_dev, samplerates, num_rates);
for (size_t i = 0; i < num_rates; i++)
_sample_rates.push_back( std::pair<double, uint32_t>( samplerates[i], i ) );
free(samplerates);
/* since they may (and will) give us an unsorted array we have to sort it here
* to play nice with the monotonic requirement of meta-range later on */
std::sort(_sample_rates.begin(), _sample_rates.end());
std::cerr << "Using " << version << ", " << "samplerates: ";
for (size_t i = 0; i < _sample_rates.size(); i++)
std::cerr << boost::format("%gM ") % (_sample_rates[i].first / 1e6);
std::cerr << std::endl;
set_center_freq( (get_freq_range().start() + get_freq_range().stop()) / 2.0 );
set_sample_rate( get_sample_rates().start() );
@ -320,8 +337,8 @@ osmosdr::meta_range_t airspy_source_c::get_sample_rates()
{
osmosdr::meta_range_t range;
range += osmosdr::range_t( 2.5e6 );
range += osmosdr::range_t( 10e6 );
for (size_t i = 0; i < _sample_rates.size(); i++)
range += osmosdr::range_t( _sample_rates[i].first );
return range;
}
@ -331,18 +348,26 @@ double airspy_source_c::set_sample_rate( double rate )
int ret = AIRSPY_SUCCESS;
if (_dev) {
airspy_samplerate_t samp = AIRSPY_SAMPLERATE_10MSPS;
bool found_supported_rate = false;
uint32_t samp_rate_index = 0;
for( unsigned int i = 0; i < _sample_rates.size(); i++ )
{
if( _sample_rates[i].first == rate )
{
samp_rate_index = _sample_rates[i].second;
found_supported_rate = true;
}
}
if ( rate == 2.5e6)
samp = AIRSPY_SAMPLERATE_2_5MSPS;
else if ( rate == 10e6)
samp = AIRSPY_SAMPLERATE_10MSPS;
else
if ( ! found_supported_rate )
{
AIRSPY_THROW_ON_ERROR( -9999, AIRSPY_FUNC_STR( "airspy_set_samplerate", rate ) )
throw std::runtime_error(
boost::str( boost::format("Unsupported samplerate: %gM") % (rate/1e6) ) );
}
ret = airspy_set_samplerate( _dev, samp );
ret = airspy_set_samplerate( _dev, samp_rate_index );
if ( AIRSPY_SUCCESS == ret ) {
_sample_rate = rate;
} else {

@ -130,6 +130,7 @@ private:
boost::mutex _fifo_lock;
boost::condition_variable _samp_avail;
std::vector< std::pair<double, uint32_t> > _sample_rates;
double _sample_rate;
double _center_freq;
double _freq_corr;

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