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

341 lines
7.9 KiB

#include "freesrp_source_c.h"
using namespace FreeSRP;
using namespace std;
freesrp_source_c_sptr make_freesrp_source_c (const string &args)
{
return gnuradio::get_initial_sptr(new freesrp_source_c (args));
}
/*
* Specify constraints on number of input and output streams.
* This info is used to construct the input and output signatures
* (2nd & 3rd args to gr_block's constructor). The input and
* output signatures are used by the runtime system to
* check that a valid number and type of inputs and outputs
* are connected to this block. In this case, we accept
* only 0 input and 1 output.
*/
static const int MIN_IN = 0; // mininum number of input streams
static const int MAX_IN = 0; // maximum number of input streams
static const int MIN_OUT = 1; // minimum number of output streams
static const int MAX_OUT = 1; // maximum number of output streams
freesrp_source_c::freesrp_source_c (const string & args) : gr::sync_block ("freesrp_source_c",
gr::io_signature::make (MIN_IN, MAX_IN, sizeof (gr_complex)),
gr::io_signature::make (MIN_OUT, MAX_OUT, sizeof (gr_complex))),
freesrp_common(args)
{
if(_srp == nullptr)
{
throw runtime_error("FreeSRP not initialized!");
}
}
bool freesrp_source_c::start()
{
response res = _srp->send_cmd({SET_DATAPATH_EN, 1});
if(res.error != CMD_OK)
{
return false;
}
_srp->start_rx(std::bind(&freesrp_source_c::freesrp_rx_callback, this, std::placeholders::_1));
_running = true;
return true;
}
bool freesrp_source_c::stop()
{
_srp->send_cmd({SET_DATAPATH_EN, 0});
_srp->stop_rx();
_running = false;
return true;
}
void freesrp_source_c::freesrp_rx_callback(const vector<sample> &samples)
{
unique_lock<std::mutex> lk(_buf_mut);
for(const sample &s : samples)
{
if(!_buf_queue.try_enqueue(s))
{
if(!_ignore_overflow)
{
throw runtime_error("RX buffer overflow");
}
}
else
{
_buf_num_samples++;
}
}
_buf_cond.notify_one();
}
int freesrp_source_c::work(int noutput_items, gr_vector_const_void_star& input_items, gr_vector_void_star& output_items)
{
gr_complex *out = static_cast<gr_complex *>(output_items[0]);
unique_lock<std::mutex> lk(_buf_mut);
if(!_running)
{
return WORK_DONE;
}
// Wait until enough samples collected
while(_buf_num_samples < (unsigned int) noutput_items)
{
_buf_cond.wait(lk);
}
for(int i = 0; i < noutput_items; ++i)
{
sample s;
if(!_buf_queue.try_dequeue(s))
{
// This should not be happening
throw runtime_error("Failed to get sample from buffer. This should never happen. Number of available samples reported to be " + to_string(_buf_num_samples) + ", noutput_items=" + to_string(noutput_items) + ", i=" + to_string(i));
}
else
{
_buf_num_samples--;
}
out[i] = gr_complex(((float) s.i) / 2048.0f, ((float) s.q) / 2048.0f);
}
return noutput_items;
}
double freesrp_source_c::set_sample_rate( double rate )
{
command cmd = _srp->make_command(SET_RX_SAMP_FREQ, rate);
response r = _srp->send_cmd(cmd);
if(r.error != CMD_OK)
{
cerr << "Could not set RX sample rate, error: " << r.error << endl;
return 0;
}
else
{
return static_cast<double>(r.param);
}
}
double freesrp_source_c::get_sample_rate( void )
{
response r = _srp->send_cmd({GET_RX_SAMP_FREQ, 0});
if(r.error != CMD_OK)
{
cerr << "Could not get RX sample rate, error: " << r.error << endl;
return 0;
}
else
{
return static_cast<double>(r.param);
}
}
double freesrp_source_c::set_center_freq( double freq, size_t chan )
{
command cmd = _srp->make_command(SET_RX_LO_FREQ, freq);
response r = _srp->send_cmd(cmd);
if(r.error != CMD_OK)
{
cerr << "Could not set RX LO frequency, error: " << r.error << endl;
return 0;
}
else
{
return static_cast<double>(r.param);
}
}
double freesrp_source_c::get_center_freq( size_t chan )
{
response r = _srp->send_cmd({GET_RX_LO_FREQ, 0});
if(r.error != CMD_OK)
{
cerr << "Could not get RX LO frequency, error: " << r.error << endl;
return 0;
}
else
{
return static_cast<double>(r.param);
}
}
vector<string> freesrp_source_c::get_gain_names( size_t chan )
{
vector<string> names;
names.push_back("RF");
return names;
}
osmosdr::gain_range_t freesrp_source_c::get_gain_range(size_t chan)
{
osmosdr::meta_range_t gain_ranges;
gain_ranges.push_back(osmosdr::range_t(0, 74, 1));
return gain_ranges;
}
bool freesrp_source_c::set_gain_mode( bool automatic, size_t chan )
{
uint8_t gc_mode = RF_GAIN_SLOWATTACK_AGC;
if(!automatic)
{
gc_mode = RF_GAIN_MGC;
}
command cmd = _srp->make_command(SET_RX_GC_MODE, gc_mode);
response r = _srp->send_cmd(cmd);
if(r.error != CMD_OK)
{
cerr << "Could not set RX RF gain control mode, error: " << r.error << endl;
return false;
}
else
{
return r.param != RF_GAIN_MGC;
}
}
bool freesrp_source_c::get_gain_mode( size_t chan )
{
response r = _srp->send_cmd({GET_RX_GC_MODE, 0});
if(r.error != CMD_OK)
{
cerr << "Could not get RX RF gain control mode, error: " << r.error << endl;
return false;
}
else
{
return r.param != RF_GAIN_MGC;
}
}
osmosdr::gain_range_t freesrp_source_c::get_gain_range(const string& name, size_t chan)
{
return get_gain_range(chan);
}
double freesrp_source_c::set_gain(double gain, size_t chan)
{
gain = get_gain_range().clip(gain);
command cmd = _srp->make_command(SET_RX_RF_GAIN, gain);
response r = _srp->send_cmd(cmd);
if(r.error != CMD_OK)
{
cerr << "Could not set RX RF gain, error: " << r.error << endl;
return 0;
}
else
{
return r.param;
}
}
double freesrp_source_c::set_gain(double gain, const string& name, size_t chan)
{
if(name == "RF")
{
return set_gain(gain, chan);
}
else
{
return 0;
}
}
double freesrp_source_c::get_gain(size_t chan)
{
response r = _srp->send_cmd({GET_RX_RF_GAIN, 0});
if(r.error != CMD_OK)
{
cerr << "Could not get RX RF gain, error: " << r.error << endl;
return 0;
}
else
{
return (static_cast<double>(r.param));
}
}
double freesrp_source_c::get_gain(const string& name, size_t chan)
{
if(name == "RF")
{
return get_gain(chan);
}
else
{
return 0;
}
}
double freesrp_source_c::set_bb_gain(double gain, size_t chan)
{
return set_gain(gain, chan);
}
vector<string> freesrp_source_c::get_antennas(size_t chan)
{
vector<string> antennas;
antennas.push_back(get_antenna(chan));
return antennas;
}
string freesrp_source_c::set_antenna(const string& antenna, size_t chan)
{
return get_antenna(chan);
}
string freesrp_source_c::get_antenna(size_t chan)
{
return "RX";
}
double freesrp_source_c::set_bandwidth(double bandwidth, size_t chan)
{
command cmd = _srp->make_command(SET_RX_RF_BANDWIDTH, bandwidth);
response r = _srp->send_cmd(cmd);
if(r.error != CMD_OK)
{
cerr << "Could not set RX RF bandwidth, error: " << r.error << endl;
return 0;
}
else
{
return static_cast<double>(r.param);
}
}
double freesrp_source_c::get_bandwidth(size_t chan)
{
response r = _srp->send_cmd({GET_RX_RF_BANDWIDTH, 0});
if(r.error != CMD_OK)
{
cerr << "Could not get RX RF bandwidth, error: " << r.error << endl;
return 0;
}
else
{
return static_cast<double>(r.param);
}
}