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/* -*- c++ -*- */
/*
* Copyright 2010 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* 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 <uhd_mimo_sink.h>
#include <gr_io_signature.h>
#include <stdexcept>
#include "utils.h"
/***********************************************************************
* UHD Sink
**********************************************************************/
uhd_mimo_sink::uhd_mimo_sink(gr_io_signature_sptr sig)
:gr_sync_block("uhd mimo sink", sig, gr_make_io_signature(0, 0, 0)){
/* NOP */
}
/***********************************************************************
* UHD Sink Impl
**********************************************************************/
class uhd_mimo_sink_impl : public uhd_mimo_sink{
public:
uhd_mimo_sink_impl(
size_t num_channels,
const std::string &args,
const uhd::io_type_t &type
) : uhd_mimo_sink(gr_make_io_signature(num_channels, num_channels, type.size)), _type(type)
{
_first_run = false;
_dev = uhd::usrp::mimo_usrp::make(args);
_dev->set_time_unknown_pps(uhd::time_spec_t()); //TODO may want option to disable this
}
~uhd_mimo_sink_impl(void){
//NOP
}
void set_samp_rate_all(double rate){
_dev->set_tx_rate_all(rate);
do_samp_rate_error_message(rate, get_samp_rate_all(), "TX");
}
double get_samp_rate_all(void){
return _dev->get_tx_rate_all();
}
uhd::tune_result_t set_center_freq(size_t chan, double freq){
uhd::tune_result_t tr = _dev->set_tx_freq(chan, freq);
do_tune_freq_error_message(freq, _dev->get_tx_freq(chan), "TX");
return tr;
}
uhd::freq_range_t get_freq_range(size_t chan){
return _dev->get_tx_freq_range(chan);
}
void set_gain(size_t chan, float gain){
return _dev->set_tx_gain(chan, gain);
}
float get_gain(size_t chan){
return _dev->get_tx_gain(chan);
}
uhd::gain_range_t get_gain_range(size_t chan){
return _dev->get_tx_gain_range(chan);
}
void set_antenna(size_t chan, const std::string &ant){
return _dev->set_tx_antenna(chan, ant);
}
std::string get_antenna(size_t chan){
return _dev->get_tx_antenna(chan);
}
std::vector<std::string> get_antennas(size_t chan){
return _dev->get_tx_antennas(chan);
}
uhd::time_spec_t get_time_now(void){
return _dev->get_time_now();
}
void set_time_next_pps(const uhd::time_spec_t &time_spec){
return _dev->set_time_next_pps(time_spec);
}
uhd::usrp::mimo_usrp::sptr get_device(void){
return _dev;
}
/***********************************************************************
* Work
**********************************************************************/
int work(
int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items
){
//init the metadata on the first call to work
//and set the timespec with the current time + some offset
if (not _first_run){
_first_run = true;
_metadata.start_of_burst = true;
_metadata.has_time_spec = true;
_metadata.time_spec = get_time_now() + uhd::time_spec_t(0, 0.01); //10ms offset in future
}
//call to send with metadata slightly in the future (send-at)
size_t num_sent = _dev->get_device()->send(
input_items, noutput_items, _metadata,
_type, uhd::device::SEND_MODE_FULL_BUFF
);
//increment the send-at time by the number of samples sent
_metadata.time_spec += uhd::time_spec_t(0, num_sent, get_samp_rate_all());
return num_sent;
}
protected:
uhd::usrp::mimo_usrp::sptr _dev;
const uhd::io_type_t _type;
uhd::tx_metadata_t _metadata;
bool _first_run;
};
/***********************************************************************
* Make UHD Sink
**********************************************************************/
boost::shared_ptr<uhd_mimo_sink> uhd_make_mimo_sink(
size_t num_channels,
const std::string &args,
const uhd::io_type_t::tid_t &type
){
return boost::shared_ptr<uhd_mimo_sink>(
new uhd_mimo_sink_impl(num_channels, args, type)
);
}
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