forked from sdr/gr-osmosdr
497 lines
14 KiB
C++
497 lines
14 KiB
C++
/* -*- c++ -*- */
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/*
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* Copyright 2013-2017 Nuand LLC
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* Copyright 2013 Dimitri Stolnikov <horiz0n@gmx.net>
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*
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* GNU Radio is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3, or (at your option)
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* any later version.
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*
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* GNU Radio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Radio; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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/*
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* config.h is generated by configure. It contains the results
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* of probing for features, options etc. It should be the first
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* file included in your .cc file.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <iostream>
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#include <boost/assign.hpp>
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#include <boost/format.hpp>
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#include <boost/lexical_cast.hpp>
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#include <gnuradio/io_signature.h>
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#include <gnuradio/tags.h>
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#include <gnuradio/sync_block.h>
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#include <volk/volk.h>
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#include "arg_helpers.h"
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#include "bladerf_sink_c.h"
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//#define DEBUG_BLADERF_SINK
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#ifdef DEBUG_BLADERF_SINK
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#define DBG(input) std::cerr << _pfx << input << std::endl
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#else
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#define DBG(input)
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#endif
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using namespace boost::assign;
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/*
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* Create a new instance of bladerf_sink_c and return
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* a boost shared_ptr. This is effectively the public constructor.
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*/
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bladerf_sink_c_sptr make_bladerf_sink_c(const std::string &args)
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{
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return gnuradio::get_initial_sptr(new bladerf_sink_c(args));
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}
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/*
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* The private constructor
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*/
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bladerf_sink_c::bladerf_sink_c(const std::string &args)
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:gr::sync_block("bladerf_sink_c",
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args_to_io_signature(args),
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gr::io_signature::make(0, 0, 0))
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{
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dict_t dict = params_to_dict(args);
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/* Perform src/sink agnostic initializations */
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init(dict, BLADERF_TX);
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/* Bounds-checking input signature depending on our underlying hardware */
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size_t max_nchan = 1;
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if (get_board_type(_dev.get()) == BLADERF_REV_2) {
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max_nchan = 2;
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}
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if (get_num_channels() > max_nchan) {
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std::cerr << _pfx
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<< "Warning: number of channels specified on command line ("
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<< get_num_channels() << ") is greater than the maximum number "
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<< "supported by this device (" << max_nchan << "). Resetting "
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<< "to " << max_nchan << "."
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<< std::endl;
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set_input_signature( gr::io_signature::make(max_nchan, max_nchan, sizeof(gr_complex) ) );
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}
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_use_mimo = get_num_channels() > 1;
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}
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bool bladerf_sink_c::start()
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{
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_in_burst = false;
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return bladerf_common::start(BLADERF_TX);
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}
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bool bladerf_sink_c::stop()
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{
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return bladerf_common::stop(BLADERF_TX);
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}
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#define INVALID_IDX -1
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int bladerf_sink_c::transmit_with_tags(int noutput_items)
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{
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int status;
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int count = 0;
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// For a long burst, we may be transmitting the burst contents over
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// multiple work calls, so we'll just be sending the entire buffer
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// Therefore, we initialize our indicies for this case.
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int start_idx = 0;
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int end_idx = (noutput_items - 1);
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struct bladerf_metadata meta;
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std::vector < gr::tag_t > tags;
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int16_t zeros[8] = { 0 };
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memset(&meta, 0, sizeof(meta));
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DBG("transmit_with_tags(" << noutput_items << ")");
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// Important Note: We assume that these tags are ordered by their offsets.
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// This is true for GNU Radio 3.7.7.x, since the GR runtime libs store
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// these in a multimap.
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//
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// If you're using an earlier GNU Radio version, you may have to sort
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// the tags vector.
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get_tags_in_window(tags, 0, 0, noutput_items);
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if (tags.size() == 0) {
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if (_in_burst) {
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DBG("TX'ing " << noutput_items << " samples in within a burst...");
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return bladerf_sync_tx(_dev.get(),
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static_cast < void *>(_conv_buf),
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noutput_items, &meta, _stream_timeout_ms);
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} else {
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std::cerr << _pfx
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<< "Dropping " << noutput_items << " samples not in a burst."
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<< std::endl;
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}
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}
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BOOST_FOREACH(gr::tag_t tag, tags) {
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// Upon seeing an SOB tag, update our offset. We'll TX the start of the
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// burst when we see an EOB or at the end of this function - whichever
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// occurs first.
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if (pmt::symbol_to_string(tag.key) == "tx_sob") {
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if (_in_burst) {
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std::cerr << ("Got SOB while already within a burst") << std::endl;
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return BLADERF_ERR_INVAL;
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} else {
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start_idx = static_cast < int >(tag.offset - nitems_read(0));
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DBG("Got SOB " << start_idx << " samples into work payload");
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meta.flags |=
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(BLADERF_META_FLAG_TX_NOW | BLADERF_META_FLAG_TX_BURST_START);
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_in_burst = true;
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}
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} else if (pmt::symbol_to_string(tag.key) == "tx_eob") {
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if (!_in_burst) {
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std::cerr << _pfx << "Got EOB while not in burst" << std::endl;
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return BLADERF_ERR_INVAL;
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}
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// Upon seeing an EOB, transmit what we have and reset our state
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end_idx = static_cast < int >(tag.offset - nitems_read(0));
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DBG("Got EOB " << end_idx << " samples into work payload");
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if ((start_idx == INVALID_IDX) || (start_idx > end_idx)) {
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DBG("Buffer indicies are in an invalid state!");
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return BLADERF_ERR_INVAL;
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}
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count = end_idx - start_idx + 1;
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DBG("TXing @ EOB [" << start_idx << ":" << end_idx << "]");
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status = bladerf_sync_tx(_dev.get(),
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static_cast < void *>(&_conv_buf[2 * start_idx]),
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count, &meta, _stream_timeout_ms);
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if (status != 0) {
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return status;
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}
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/* TODO: libbladeRF should now take care of this for us,
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* as of the libbladeRF version that includes the
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* TX_UPDATE_TIMESTAMP flag. Verify this potentially remove this.
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* (The meta.flags changes would then be applied to the previous
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* bladerf_sync_tx() call.)
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*/
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DBG("TXing Zeros with burst end flag");
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meta.flags &= ~(BLADERF_META_FLAG_TX_NOW | BLADERF_META_FLAG_TX_BURST_START);
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meta.flags |= BLADERF_META_FLAG_TX_BURST_END;
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status = bladerf_sync_tx(_dev.get(),
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static_cast < void *>(zeros),
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4, &meta, _stream_timeout_ms);
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/* Reset our state */
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start_idx = INVALID_IDX;
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end_idx = (noutput_items - 1);
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meta.flags = 0;
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_in_burst = false;
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if (status != 0) {
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DBG("Failed to send zero samples to flush EOB");
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return status;
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}
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}
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}
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// We had a start of burst with no end yet - transmit those samples
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if (_in_burst) {
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count = end_idx - start_idx + 1;
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DBG("TXing SOB [" << start_idx << ":" << end_idx << "]");
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status = bladerf_sync_tx(_dev.get(),
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static_cast < void *>(&_conv_buf[2 * start_idx]),
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count, &meta, _stream_timeout_ms);
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}
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return status;
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}
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int bladerf_sink_c::work(int noutput_items,
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gr_vector_const_void_star &input_items,
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gr_vector_void_star &output_items)
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{
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const gr_complex *in = (const gr_complex *) input_items[0];
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const float scaling = 2000.0f;
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int status;
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if (noutput_items > _conv_buf_size) {
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void *tmp;
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_conv_buf_size = noutput_items;
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tmp = realloc(_conv_buf, _conv_buf_size * 2 * sizeof(int16_t));
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if (tmp == NULL) {
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throw std::runtime_error(_pfx + "Failed to realloc _conv_buf");
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} else {
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DBG("Resized _conv_buf to " << _conv_buf_size << " samples");
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}
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_conv_buf = static_cast < int16_t * >(tmp);
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}
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/* Convert floating point samples into fixed point */
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volk_32f_s32f_convert_16i(_conv_buf, (float *) in, scaling,
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2 * noutput_items);
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if (_use_metadata) {
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status = transmit_with_tags(noutput_items);
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} else {
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status = bladerf_sync_tx(_dev.get(), static_cast < void *>(_conv_buf),
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noutput_items, NULL, _stream_timeout_ms);
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}
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if (status != 0) {
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std::cerr << _pfx
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<< "bladerf_sync_tx error: " << bladerf_strerror(status)
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<< std::endl;
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_consecutive_failures++;
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if (_consecutive_failures >= MAX_CONSECUTIVE_FAILURES) {
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noutput_items = WORK_DONE;
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std::cerr << _pfx
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<< "Consecutive error limit hit. Shutting down."
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<< std::endl;
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}
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} else {
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_consecutive_failures = 0;
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}
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return noutput_items;
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}
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std::vector < std::string > bladerf_sink_c::get_devices()
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{
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return bladerf_common::devices();
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}
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size_t bladerf_sink_c::get_num_channels()
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{
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return input_signature()->max_streams();
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}
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osmosdr::meta_range_t bladerf_sink_c::get_sample_rates()
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{
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return sample_rates();
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}
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double bladerf_sink_c::set_sample_rate(double rate)
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{
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return bladerf_common::set_sample_rate(BLADERF_TX, rate);
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}
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double bladerf_sink_c::get_sample_rate()
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{
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return bladerf_common::get_sample_rate(BLADERF_TX);
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}
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osmosdr::freq_range_t bladerf_sink_c::get_freq_range(size_t chan)
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{
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return bladerf_common::get_freq_range(BLADERF_CHANNEL_TX(chan));
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}
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double bladerf_sink_c::set_center_freq(double freq, size_t chan)
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{
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return bladerf_common::set_center_freq(freq, BLADERF_CHANNEL_TX(chan));
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}
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double bladerf_sink_c::get_center_freq(size_t chan)
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{
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return bladerf_common::get_center_freq(BLADERF_CHANNEL_TX(chan));
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}
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double bladerf_sink_c::set_freq_corr(double ppm, size_t chan)
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{
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/* TODO: Write the VCTCXO with a correction value (also changes RX ppm value!) */
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return get_freq_corr(BLADERF_CHANNEL_TX(chan));
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}
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double bladerf_sink_c::get_freq_corr(size_t chan)
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{
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/* TODO: Return back the frequency correction in ppm */
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return 0;
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}
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std::vector < std::string > bladerf_sink_c::get_gain_names(size_t chan)
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{
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return bladerf_common::get_gain_names(BLADERF_CHANNEL_TX(chan));
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}
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osmosdr::gain_range_t bladerf_sink_c::get_gain_range(size_t chan)
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{
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return bladerf_common::get_gain_range(BLADERF_CHANNEL_TX(chan));
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}
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osmosdr::gain_range_t bladerf_sink_c::get_gain_range(const std::string &name,
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size_t chan)
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{
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return bladerf_common::get_gain_range(name, BLADERF_CHANNEL_TX(chan));
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}
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bool bladerf_sink_c::set_gain_mode(bool automatic, size_t chan)
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{
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return bladerf_common::set_gain_mode(automatic, BLADERF_CHANNEL_TX(chan));
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}
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bool bladerf_sink_c::get_gain_mode(size_t chan)
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{
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return bladerf_common::get_gain_mode(BLADERF_CHANNEL_TX(chan));
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}
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double bladerf_sink_c::set_gain(double gain, size_t chan)
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{
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return bladerf_common::set_gain(gain, BLADERF_CHANNEL_TX(chan));
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}
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double bladerf_sink_c::set_gain(double gain, const std::string &name,
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size_t chan)
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{
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return bladerf_common::set_gain(gain, name, BLADERF_CHANNEL_TX(chan));
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}
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double bladerf_sink_c::get_gain(size_t chan)
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{
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return bladerf_common::get_gain(BLADERF_CHANNEL_TX(chan));
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}
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double bladerf_sink_c::get_gain(const std::string &name, size_t chan)
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{
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return bladerf_common::get_gain(name, BLADERF_CHANNEL_TX(chan));
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}
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std::vector < std::string > bladerf_sink_c::get_antennas(size_t chan)
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{
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std::vector < std::string > antennas;
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antennas += "TX0";
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if (BLADERF_REV_2 == get_board_type(_dev.get())) {
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antennas += "TX1";
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}
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return antennas;
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}
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std::string bladerf_sink_c::set_antenna(const std::string &antenna,
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size_t chan)
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{
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return get_antenna(BLADERF_CHANNEL_TX(chan));
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}
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std::string bladerf_sink_c::get_antenna(size_t chan)
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{
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/* We only have a single transmit antenna here */
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// TODO: the above is a lie
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return "TX0";
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}
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void bladerf_sink_c::set_dc_offset(const std::complex < double > &offset,
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size_t chan)
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{
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int status;
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status = bladerf_common::set_dc_offset(BLADERF_TX, offset, chan);
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if (status != 0) {
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throw std::runtime_error(_pfx + "could not set dc offset: " +
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bladerf_strerror(status));
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}
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}
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void bladerf_sink_c::set_iq_balance(const std::complex < double > &balance,
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size_t chan)
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{
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int status;
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status = bladerf_common::set_iq_balance(BLADERF_TX, balance, chan);
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if (status != 0) {
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throw std::runtime_error(_pfx + "could not set iq balance: " +
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bladerf_strerror(status));
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}
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}
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double bladerf_sink_c::set_bandwidth(double bandwidth, size_t chan)
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{
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int status;
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uint32_t actual;
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if (bandwidth == 0.0) {
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/* bandwidth of 0 means automatic filter selection */
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/* select narrower filters to prevent aliasing */
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bandwidth = get_sample_rate() * 0.75;
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}
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status = bladerf_set_bandwidth(_dev.get(), BLADERF_TX, (uint32_t) bandwidth,
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&actual);
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if (status != 0) {
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throw std::runtime_error(_pfx + "could not set bandwidth:" +
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bladerf_strerror(status));
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}
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return get_bandwidth();
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}
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double bladerf_sink_c::get_bandwidth(size_t chan)
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{
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int status;
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uint32_t bandwidth;
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status = bladerf_get_bandwidth(_dev.get(), BLADERF_TX, &bandwidth);
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if (status != 0) {
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throw std::runtime_error(_pfx + "could not get bandwidth: " +
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bladerf_strerror(status));
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}
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return (double) bandwidth;
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}
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osmosdr::freq_range_t bladerf_sink_c::get_bandwidth_range(size_t chan)
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{
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return filter_bandwidths();
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}
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void bladerf_sink_c::set_clock_source(const std::string &source,
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const size_t mboard)
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{
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bladerf_common::set_clock_source(source, mboard);
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}
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std::string bladerf_sink_c::get_clock_source(const size_t mboard)
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{
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return bladerf_common::get_clock_source(mboard);
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}
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std::vector < std::string > bladerf_sink_c::get_clock_sources(const size_t mboard)
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{
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return bladerf_common::get_clock_sources(mboard);
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}
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