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/*
* 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_multi_usrp_sink.h>
#include <gr_io_signature.h>
#include <stdexcept>
/***********************************************************************
* UHD Multi USRP Sink
**********************************************************************/
uhd_multi_usrp_sink::uhd_multi_usrp_sink(gr_io_signature_sptr sig)
:gr_sync_block("uhd multi usrp sink", sig, gr_make_io_signature(0, 0, 0)){
/* NOP */
}
/***********************************************************************
* UHD Multi USRP Sink Impl
**********************************************************************/
class uhd_multi_usrp_sink_impl : public uhd_multi_usrp_sink{
public:
uhd_multi_usrp_sink_impl(
const std::string &device_addr,
const uhd::io_type_t &io_type,
size_t num_channels
):
uhd_multi_usrp_sink(gr_make_io_signature(
num_channels, num_channels, io_type.size
)),
_type(io_type),
_nchan(num_channels)
{
_dev = uhd::usrp::multi_usrp::make(device_addr);
}
void set_subdev_spec(const std::string &spec, size_t mboard){
return _dev->set_tx_subdev_spec(spec, mboard);
}
void set_samp_rate(double rate){
_dev->set_tx_rate(rate);
}
double get_samp_rate(void){
return _dev->get_tx_rate();
}
uhd::tune_result_t set_center_freq(double freq, size_t chan){
uhd::tune_result_t tr = _dev->set_tx_freq(freq, chan);
return tr;
}
uhd::freq_range_t get_freq_range(size_t chan){
return _dev->get_tx_freq_range(chan);
}
void set_gain(float gain, size_t chan){
return _dev->set_tx_gain(gain, chan);
}
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(const std::string &ant, size_t chan){
return _dev->set_tx_antenna(ant, chan);
}
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);
}
void set_bandwidth(double bandwidth, size_t chan){
return _dev->set_tx_bandwidth(bandwidth, chan);
}
void set_clock_config(const uhd::clock_config_t &clock_config, size_t mboard){
return _dev->set_clock_config(clock_config, mboard);
}
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);
}
void set_time_unknown_pps(const uhd::time_spec_t &time_spec){
return _dev->set_time_unknown_pps(time_spec);
}
uhd::usrp::multi_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
){
uhd::tx_metadata_t metadata;
metadata.start_of_burst = true;
return _dev->get_device()->send(
input_items, noutput_items, metadata,
_type, uhd::device::SEND_MODE_FULL_BUFF, 1.0
);
}
//Send an empty start-of-burst packet to begin streaming.
//Set at a time in the near future so data will be sync'd.
bool start(void){
uhd::tx_metadata_t metadata;
metadata.start_of_burst = true;
metadata.has_time_spec = true;
//TODO: Time in the near future, must be less than source time in future
//because ethernet pause frames with throttle stream commands.
//It will be fixed with the invention of host-based flow control.
metadata.time_spec = get_time_now() + uhd::time_spec_t(0.05);
_dev->get_device()->send(
gr_vector_const_void_star(_nchan), 0, metadata,
_type, uhd::device::SEND_MODE_ONE_PACKET, 1.0
);
return true;
}
//Send an empty end-of-burst packet to end streaming.
//Ending the burst avoids an underflow error on stop.
bool stop(void){
uhd::tx_metadata_t metadata;
metadata.end_of_burst = true;
_dev->get_device()->send(
gr_vector_const_void_star(_nchan), 0, metadata,
_type, uhd::device::SEND_MODE_ONE_PACKET, 1.0
);
return true;
}
protected:
uhd::usrp::multi_usrp::sptr _dev;
const uhd::io_type_t _type;
size_t _nchan;
};
/***********************************************************************
* Make UHD Multi USRP Sink
**********************************************************************/
boost::shared_ptr<uhd_multi_usrp_sink> uhd_make_multi_usrp_sink(
const std::string &device_addr,
const uhd::io_type_t::tid_t &io_type,
size_t num_channels
){
return boost::shared_ptr<uhd_multi_usrp_sink>(
new uhd_multi_usrp_sink_impl(device_addr, io_type, num_channels)
);
}
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