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gr-osmosdr/lib/runtime/uhd/usrp_source_impl.cc

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/* -*- c++ -*- */
/*
* Copyright 2010-2013 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 "usrp_source_impl.h"
#include "gr_uhd_common.h"
#include <gnuradio/io_signature.h>
#include <boost/format.hpp>
#include <boost/thread/thread.hpp>
#include <boost/make_shared.hpp>
#include <stdexcept>
#include <iostream>
namespace gr {
namespace uhd {
usrp_source::sptr
usrp_source::make(const ::uhd::device_addr_t &device_addr,
const ::uhd::io_type_t &io_type,
size_t num_channels)
{
//fill in the streamer args
::uhd::stream_args_t stream_args;
switch(io_type.tid) {
case ::uhd::io_type_t::COMPLEX_FLOAT32: stream_args.cpu_format = "fc32"; break;
case ::uhd::io_type_t::COMPLEX_INT16: stream_args.cpu_format = "sc16"; break;
default: throw std::runtime_error("only complex float and shorts known to work");
}
stream_args.otw_format = "sc16"; //only sc16 known to work
for(size_t chan = 0; chan < num_channels; chan++)
stream_args.channels.push_back(chan); //linear mapping
return usrp_source::make(device_addr, stream_args);
}
usrp_source::sptr
usrp_source::make(const ::uhd::device_addr_t &device_addr,
const ::uhd::stream_args_t &stream_args)
{
check_abi();
return usrp_source::sptr
(new usrp_source_impl(device_addr, stream_args_ensure(stream_args)));
}
usrp_source_impl::usrp_source_impl(const ::uhd::device_addr_t &device_addr,
const ::uhd::stream_args_t &stream_args):
sync_block("gr uhd usrp source",
io_signature::make(0, 0, 0),
args_to_io_sig(stream_args)),
_stream_args(stream_args),
_nchan(stream_args.channels.size()),
_stream_now(_nchan == 1),
_tag_now(false),
_start_time_set(false)
{
if(stream_args.cpu_format == "fc32")
_type = boost::make_shared< ::uhd::io_type_t >(::uhd::io_type_t::COMPLEX_FLOAT32);
if(stream_args.cpu_format == "sc16")
_type = boost::make_shared< ::uhd::io_type_t >(::uhd::io_type_t::COMPLEX_INT16);
std::stringstream str;
str << name() << unique_id();
#if 0
_id = pmt::string_to_symbol(str.str());
#endif
_dev = ::uhd::usrp::multi_usrp::make(device_addr);
}
usrp_source_impl::~usrp_source_impl()
{
}
::uhd::dict<std::string, std::string>
usrp_source_impl::get_usrp_info(size_t chan)
{
chan = _stream_args.channels[chan];
#ifdef UHD_USRP_MULTI_USRP_GET_USRP_INFO_API
return _dev->get_usrp_rx_info(chan);
#else
throw std::runtime_error("not implemented in this version");
#endif
}
void
usrp_source_impl::set_subdev_spec(const std::string &spec, size_t mboard)
{
return _dev->set_rx_subdev_spec(spec, mboard);
}
std::string
usrp_source_impl::get_subdev_spec(size_t mboard)
{
return _dev->get_rx_subdev_spec(mboard).to_string();
}
void
usrp_source_impl::set_samp_rate(double rate)
{
BOOST_FOREACH(const size_t chan, _stream_args.channels)
{
_dev->set_rx_rate(rate, chan);
}
_samp_rate = this->get_samp_rate();
_tag_now = true;
}
double
usrp_source_impl::get_samp_rate(void)
{
return _dev->get_rx_rate(_stream_args.channels[0]);
}
::uhd::meta_range_t
usrp_source_impl::get_samp_rates(void)
{
#ifdef UHD_USRP_MULTI_USRP_GET_RATES_API
return _dev->get_rx_rates(_stream_args.channels[0]);
#else
throw std::runtime_error("not implemented in this version");
#endif
}
::uhd::tune_result_t
usrp_source_impl::set_center_freq(const ::uhd::tune_request_t tune_request,
size_t chan)
{
const size_t user_chan = chan;
chan = _stream_args.channels[chan];
const ::uhd::tune_result_t res = _dev->set_rx_freq(tune_request, chan);
_center_freq = this->get_center_freq(user_chan);
_tag_now = true;
return res;
}
double
usrp_source_impl::get_center_freq(size_t chan)
{
chan = _stream_args.channels[chan];
return _dev->get_rx_freq(chan);
}
::uhd::freq_range_t
usrp_source_impl::get_freq_range(size_t chan)
{
chan = _stream_args.channels[chan];
return _dev->get_rx_freq_range(chan);
}
void
usrp_source_impl::set_gain(double gain, size_t chan)
{
chan = _stream_args.channels[chan];
return _dev->set_rx_gain(gain, chan);
}
void
usrp_source_impl::set_gain(double gain, const std::string &name, size_t chan)
{
chan = _stream_args.channels[chan];
return _dev->set_rx_gain(gain, name, chan);
}
double
usrp_source_impl::get_gain(size_t chan)
{
chan = _stream_args.channels[chan];
return _dev->get_rx_gain(chan);
}
double
usrp_source_impl::get_gain(const std::string &name, size_t chan)
{
chan = _stream_args.channels[chan];
return _dev->get_rx_gain(name, chan);
}
std::vector<std::string>
usrp_source_impl::get_gain_names(size_t chan)
{
chan = _stream_args.channels[chan];
return _dev->get_rx_gain_names(chan);
}
::uhd::gain_range_t
usrp_source_impl::get_gain_range(size_t chan)
{
chan = _stream_args.channels[chan];
return _dev->get_rx_gain_range(chan);
}
::uhd::gain_range_t
usrp_source_impl::get_gain_range(const std::string &name, size_t chan)
{
chan = _stream_args.channels[chan];
return _dev->get_rx_gain_range(name, chan);
}
void
usrp_source_impl::set_antenna(const std::string &ant, size_t chan)
{
chan = _stream_args.channels[chan];
return _dev->set_rx_antenna(ant, chan);
}
std::string
usrp_source_impl::get_antenna(size_t chan)
{
chan = _stream_args.channels[chan];
return _dev->get_rx_antenna(chan);
}
std::vector<std::string>
usrp_source_impl::get_antennas(size_t chan)
{
chan = _stream_args.channels[chan];
return _dev->get_rx_antennas(chan);
}
void
usrp_source_impl::set_bandwidth(double bandwidth, size_t chan)
{
chan = _stream_args.channels[chan];
return _dev->set_rx_bandwidth(bandwidth, chan);
}
double
usrp_source_impl::get_bandwidth(size_t chan)
{
chan = _stream_args.channels[chan];
return _dev->get_rx_bandwidth(chan);
}
::uhd::freq_range_t
usrp_source_impl::get_bandwidth_range(size_t chan)
{
chan = _stream_args.channels[chan];
return _dev->get_rx_bandwidth_range(chan);
}
void
usrp_source_impl::set_auto_dc_offset(const bool enable, size_t chan)
{
chan = _stream_args.channels[chan];
#ifdef UHD_USRP_MULTI_USRP_FRONTEND_CAL_API
return _dev->set_rx_dc_offset(enable, chan);
#else
throw std::runtime_error("not implemented in this version");
#endif
}
void
usrp_source_impl::set_dc_offset(const std::complex<double> &offset,
size_t chan)
{
chan = _stream_args.channels[chan];
#ifdef UHD_USRP_MULTI_USRP_FRONTEND_CAL_API
return _dev->set_rx_dc_offset(offset, chan);
#else
throw std::runtime_error("not implemented in this version");
#endif
}
void
usrp_source_impl::set_iq_balance(const std::complex<double> &correction,
size_t chan)
{
chan = _stream_args.channels[chan];
#ifdef UHD_USRP_MULTI_USRP_FRONTEND_CAL_API
return _dev->set_rx_iq_balance(correction, chan);
#else
throw std::runtime_error("not implemented in this version");
#endif
}
::uhd::sensor_value_t
usrp_source_impl::get_sensor(const std::string &name, size_t chan)
{
chan = _stream_args.channels[chan];
return _dev->get_rx_sensor(name, chan);
}
std::vector<std::string>
usrp_source_impl::get_sensor_names(size_t chan)
{
chan = _stream_args.channels[chan];
return _dev->get_rx_sensor_names(chan);
}
::uhd::sensor_value_t
usrp_source_impl::get_mboard_sensor(const std::string &name, size_t mboard)
{
return _dev->get_mboard_sensor(name, mboard);
}
std::vector<std::string>
usrp_source_impl::get_mboard_sensor_names(size_t mboard)
{
return _dev->get_mboard_sensor_names(mboard);
}
void
usrp_source_impl::set_clock_config(const ::uhd::clock_config_t &clock_config,
size_t mboard)
{
return _dev->set_clock_config(clock_config, mboard);
}
void
usrp_source_impl::set_time_source(const std::string &source,
const size_t mboard)
{
#ifdef UHD_USRP_MULTI_USRP_REF_SOURCES_API
return _dev->set_time_source(source, mboard);
#else
throw std::runtime_error("not implemented in this version");
#endif
}
std::string
usrp_source_impl::get_time_source(const size_t mboard)
{
#ifdef UHD_USRP_MULTI_USRP_REF_SOURCES_API
return _dev->get_time_source(mboard);
#else
throw std::runtime_error("not implemented in this version");
#endif
}
std::vector<std::string>
usrp_source_impl::get_time_sources(const size_t mboard)
{
#ifdef UHD_USRP_MULTI_USRP_REF_SOURCES_API
return _dev->get_time_sources(mboard);
#else
throw std::runtime_error("not implemented in this version");
#endif
}
void
usrp_source_impl::set_clock_source(const std::string &source,
const size_t mboard)
{
#ifdef UHD_USRP_MULTI_USRP_REF_SOURCES_API
return _dev->set_clock_source(source, mboard);
#else
throw std::runtime_error("not implemented in this version");
#endif
}
std::string
usrp_source_impl::get_clock_source(const size_t mboard)
{
#ifdef UHD_USRP_MULTI_USRP_REF_SOURCES_API
return _dev->get_clock_source(mboard);
#else
throw std::runtime_error("not implemented in this version");
#endif
}
std::vector<std::string>
usrp_source_impl::get_clock_sources(const size_t mboard)
{
#ifdef UHD_USRP_MULTI_USRP_REF_SOURCES_API
return _dev->get_clock_sources(mboard);
#else
throw std::runtime_error("not implemented in this version");
#endif
}
double
usrp_source_impl::get_clock_rate(size_t mboard)
{
return _dev->get_master_clock_rate(mboard);
}
void
usrp_source_impl::set_clock_rate(double rate, size_t mboard)
{
return _dev->set_master_clock_rate(rate, mboard);
}
::uhd::time_spec_t
usrp_source_impl::get_time_now(size_t mboard)
{
return _dev->get_time_now(mboard);
}
::uhd::time_spec_t
usrp_source_impl::get_time_last_pps(size_t mboard)
{
return _dev->get_time_last_pps(mboard);
}
void
usrp_source_impl::set_time_now(const ::uhd::time_spec_t &time_spec,
size_t mboard)
{
return _dev->set_time_now(time_spec, mboard);
}
void
usrp_source_impl::set_time_next_pps(const ::uhd::time_spec_t &time_spec)
{
return _dev->set_time_next_pps(time_spec);
}
void
usrp_source_impl::set_time_unknown_pps(const ::uhd::time_spec_t &time_spec)
{
return _dev->set_time_unknown_pps(time_spec);
}
void
usrp_source_impl::set_command_time(const ::uhd::time_spec_t &time_spec, size_t mboard)
{
#ifdef UHD_USRP_MULTI_USRP_COMMAND_TIME_API
return _dev->set_command_time(time_spec, mboard);
#else
throw std::runtime_error("not implemented in this version");
#endif
}
void
usrp_source_impl::clear_command_time(size_t mboard)
{
#ifdef UHD_USRP_MULTI_USRP_COMMAND_TIME_API
return _dev->clear_command_time(mboard);
#else
throw std::runtime_error("not implemented in this version");
#endif
}
::uhd::usrp::dboard_iface::sptr
usrp_source_impl::get_dboard_iface(size_t chan)
{
chan = _stream_args.channels[chan];
return _dev->get_rx_dboard_iface(chan);
}
::uhd::usrp::multi_usrp::sptr
usrp_source_impl::get_device(void)
{
return _dev;
}
void
usrp_source_impl::set_user_register(const uint8_t addr,
const uint32_t data,
size_t mboard)
{
#ifdef UHD_USRP_MULTI_USRP_USER_REGS_API
_dev->set_user_register(addr, data, mboard);
#else
throw std::runtime_error("not implemented in this version");
#endif
}
void
usrp_source_impl::set_start_time(const ::uhd::time_spec_t &time)
{
_start_time = time;
_start_time_set = true;
_stream_now = false;
}
void
usrp_source_impl::issue_stream_cmd(const ::uhd::stream_cmd_t &cmd)
{
for (size_t i = 0; i < _stream_args.channels.size(); i++)
{
_dev->issue_stream_cmd(cmd, _stream_args.channels[i]);
}
}
bool
usrp_source_impl::start(void)
{
#ifdef GR_UHD_USE_STREAM_API
_rx_stream = _dev->get_rx_stream(_stream_args);
_samps_per_packet = _rx_stream->get_max_num_samps();
#endif
//setup a stream command that starts streaming slightly in the future
static const double reasonable_delay = 0.1; //order of magnitude over RTT
::uhd::stream_cmd_t stream_cmd(::uhd::stream_cmd_t::STREAM_MODE_START_CONTINUOUS);
stream_cmd.stream_now = _stream_now;
if(_start_time_set) {
_start_time_set = false; //cleared for next run
stream_cmd.time_spec = _start_time;
}
else {
stream_cmd.time_spec = get_time_now() + ::uhd::time_spec_t(reasonable_delay);
}
this->issue_stream_cmd(stream_cmd);
_tag_now = true;
return true;
}
void
usrp_source_impl::flush(void)
{
const size_t nbytes = 4096;
gr_vector_void_star outputs;
std::vector<std::vector<char> > buffs(_nchan, std::vector<char>(nbytes));
for(size_t i = 0; i < _nchan; i++) {
outputs.push_back(&buffs[i].front());
}
while(true) {
#ifdef GR_UHD_USE_STREAM_API
const size_t bpi = ::uhd::convert::get_bytes_per_item(_stream_args.cpu_format);
_rx_stream->recv(outputs, nbytes/bpi, _metadata, 0.0);
#else
_dev->get_device()->recv
(outputs, nbytes/_type->size, _metadata, *_type,
::uhd::device::RECV_MODE_FULL_BUFF, 0.0);
#endif
if(_metadata.error_code == ::uhd::rx_metadata_t::ERROR_CODE_TIMEOUT)
break;
}
}
bool
usrp_source_impl::stop(void)
{
this->issue_stream_cmd(::uhd::stream_cmd_t::STREAM_MODE_STOP_CONTINUOUS);
this->flush();
return true;
}
std::vector<std::complex<float> >
usrp_source_impl::finite_acquisition(const size_t nsamps)
{
if(_nchan != 1)
throw std::runtime_error("finite_acquisition: usrp source has multiple channels, call finite_acquisition_v");
return finite_acquisition_v(nsamps).front();
}
std::vector<std::vector<std::complex<float> > >
usrp_source_impl::finite_acquisition_v(const size_t nsamps)
{
#ifdef GR_UHD_USE_STREAM_API
//kludgy way to ensure rx streamer exsists
if(!_rx_stream) {
this->start();
this->stop();
}
//flush so there is no queued-up data
this->flush();
//create a multi-dimensional container to hold an array of sample buffers
std::vector<std::vector<std::complex<float> > >
samps(_nchan, std::vector<std::complex<float> >(nsamps));
//load the void* vector of buffer pointers
std::vector<void *> buffs(_nchan);
for(size_t i = 0; i < _nchan; i++) {
buffs[i] = &samps[i].front();
}
//tell the device to stream a finite amount
::uhd::stream_cmd_t cmd(::uhd::stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_DONE);
cmd.num_samps = nsamps;
cmd.stream_now = _stream_now;
static const double reasonable_delay = 0.1; //order of magnitude over RTT
cmd.time_spec = get_time_now() + ::uhd::time_spec_t(reasonable_delay);
this->issue_stream_cmd(cmd);
//receive samples until timeout
const size_t actual_num_samps = _rx_stream->recv
(buffs, nsamps, _metadata, 1.0);
//resize the resulting sample buffers
for(size_t i = 0; i < _nchan; i++) {
samps[i].resize(actual_num_samps);
}
return samps;
#else
throw std::runtime_error("not implemented in this version");
#endif
}
int
usrp_source_impl::work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
#ifdef GR_UHD_USE_STREAM_API
//In order to allow for low-latency:
//We receive all available packets without timeout.
//This call can timeout under regular operation...
size_t num_samps = _rx_stream->recv
(output_items, noutput_items, _metadata, 0.0);
//If receive resulted in a timeout condition:
//We now receive a single packet with a large timeout.
if(_metadata.error_code == ::uhd::rx_metadata_t::ERROR_CODE_TIMEOUT) {
num_samps = _rx_stream->recv
(output_items, noutput_items, _metadata, 0.1, true/*one pkt*/);
}
#else
size_t num_samps = _dev->get_device()->recv
(output_items, noutput_items, _metadata,
*_type, ::uhd::device::RECV_MODE_FULL_BUFF, 0.0);
if(_metadata.error_code == ::uhd::rx_metadata_t::ERROR_CODE_TIMEOUT) {
num_samps = _dev->get_device()->recv
(output_items, noutput_items, _metadata, *_type,
::uhd::device::RECV_MODE_ONE_PACKET, 1.0);
}
#endif
//handle possible errors conditions
switch(_metadata.error_code) {
case ::uhd::rx_metadata_t::ERROR_CODE_NONE:
if(_tag_now) {
_tag_now = false;
#if 0
//create a timestamp pmt for the first sample
const pmt::pmt_t val = pmt::make_tuple
(pmt::from_uint64(_metadata.time_spec.get_full_secs()),
pmt::from_double(_metadata.time_spec.get_frac_secs()));
//create a tag set for each channel
for(size_t i = 0; i < _nchan; i++) {
this->add_item_tag(i, nitems_written(0), TIME_KEY, val, _id);
this->add_item_tag(i, nitems_written(0), RATE_KEY,
pmt::from_double(_samp_rate), _id);
this->add_item_tag(i, nitems_written(0), FREQ_KEY,
pmt::from_double(_center_freq), _id);
}
#endif
}
break;
case ::uhd::rx_metadata_t::ERROR_CODE_TIMEOUT:
//its ok to timeout, perhaps the user is doing finite streaming
return 0;
case ::uhd::rx_metadata_t::ERROR_CODE_OVERFLOW:
_tag_now = true;
//ignore overflows and try work again
return work(noutput_items, input_items, output_items);
default:
std::cout << boost::format("UHD source block got error code 0x%x")
% _metadata.error_code << std::endl;
return num_samps;
}
return num_samps;
}
void
usrp_source_impl::setup_rpc()
{
#ifdef GR_CTRLPORT
add_rpc_variable(
rpcbasic_sptr(new rpcbasic_register_get<usrp_source, double>(
alias(), "samp_rate",
&usrp_source::get_samp_rate,
pmt::mp(100000.0f), pmt::mp(25000000.0f), pmt::mp(1000000.0f),
"sps", "RX Sample Rate", RPC_PRIVLVL_MIN,
DISPTIME | DISPOPTSTRIP)));
add_rpc_variable(
rpcbasic_sptr(new rpcbasic_register_set<usrp_source, double>(
alias(), "samp_rate",
&usrp_source::set_samp_rate,
pmt::mp(100000.0f), pmt::mp(25000000.0f), pmt::mp(1000000.0f),
"sps", "RX Sample Rate",
RPC_PRIVLVL_MIN, DISPNULL)));
#endif /* GR_CTRLPORT */
}
} /* namespace uhd */
} /* namespace gr */
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