forked from sdr/gr-osmosdr
664 lines
18 KiB
C++
664 lines
18 KiB
C++
/* -*- c++ -*- */
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/*
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* Copyright 2013 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 <iomanip>
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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 <gr_io_signature.h>
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#include "osmosdr_arg_helpers.h"
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#include "bladerf_sink_c.h"
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#define NUM_BUFFERS 32
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#define NUM_SAMPLES_PER_BUFFER 4096
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using namespace boost::assign;
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/*
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* Create a new instance of bladerf_source_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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* Specify constraints on number of input and output streams.
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* This info is used to construct the input and output signatures
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* (2nd & 3rd args to gr_block's constructor). The input and
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* output signatures are used by the runtime system to
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* check that a valid number and type of inputs and outputs
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* are connected to this block. In this case, we accept
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* only 0 input and 1 output.
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*/
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static const int MIN_IN = 1; // mininum number of input streams
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static const int MAX_IN = 1; // maximum number of input streams
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static const int MIN_OUT = 0; // minimum number of output streams
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static const int MAX_OUT = 0; // maximum number of output streams
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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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gr_make_io_signature (MIN_IN, MAX_IN, sizeof (gr_complex)),
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gr_make_io_signature (MIN_OUT, MAX_OUT, sizeof (gr_complex)))
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{
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int ret;
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unsigned int device_number = 0;
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std::string device_name;
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dict_t dict = params_to_dict(args);
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if (dict.count("bladerf"))
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{
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std::string value = dict["bladerf"];
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if ( value.length() )
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{
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try {
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device_number = boost::lexical_cast< unsigned int >( value );
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} catch ( std::exception &ex ) {
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throw std::runtime_error(
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"Failed to use '" + value + "' as device number: " + ex.what());
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}
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}
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}
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device_name = boost::str(boost::format( "libusb:instance=%d" ) % device_number);
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/* Open a handle to the device */
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ret = bladerf_open( &_dev, device_name.c_str() );
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if ( ret != 0 ) {
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throw std::runtime_error( std::string(__FUNCTION__) + " " +
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"failed to open bladeRF device " + device_name );
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}
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if (dict.count("fw"))
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{
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std::string fw = dict["fw"];
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std::cerr << "Flashing firmware image " << fw << "..., DO NOT INTERRUPT!"
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<< std::endl;
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ret = bladerf_flash_firmware( _dev, fw.c_str() );
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if ( ret != 0 )
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std::cerr << "bladerf_flash_firmware has failed with " << ret << std::endl;
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else
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std::cerr << "The firmware has been successfully flashed." << std::endl;
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}
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if (dict.count("fpga"))
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{
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std::string fpga = dict["fpga"];
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std::cerr << "Loading FPGA bitstream " << fpga << "..." << std::endl;
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ret = bladerf_load_fpga( _dev, fpga.c_str() );
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if ( ret != 0 && ret != 1 )
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std::cerr << "bladerf_load_fpga has failed with " << ret << std::endl;
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else
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std::cerr << "The FPGA bitstream has been successfully loaded." << std::endl;
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}
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std::cerr << "Using nuand LLC bladeRF #" << device_number;
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char serial[BLADERF_SERIAL_LENGTH];
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if ( bladerf_get_serial( _dev, serial ) == 0 )
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std::cerr << " SN " << serial;
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unsigned int major, minor;
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if ( bladerf_get_fw_version( _dev, &major, &minor) == 0 )
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std::cerr << " FW v" << major << "." << minor;
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if ( bladerf_get_fpga_version( _dev, &major, &minor) == 0 )
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std::cerr << " FPGA v" << major << "." << minor;
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std::cerr << std::endl;
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if ( bladerf_is_fpga_configured( _dev ) != 1 )
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{
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std::ostringstream oss;
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oss << "The FPGA is not configured! "
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<< "Provide device argument fpga=/path/to/the/bitstream.rbf to load it.";
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throw std::runtime_error( oss.str() );
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}
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/* Set the range of VGA1, VGA1GAINT[7:0] */
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_vga1_range = osmosdr::gain_range_t( -35, -4, 1 );
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/* Set the range of VGA2, VGA2GAIN[4:0] */
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_vga2_range = osmosdr::gain_range_t( 0, 25, 1 );
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_num_buffers = _samples_per_buffer = 0;
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/* Initialize buffer and sample configuration */
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if (dict.count("buffers")) {
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_num_buffers = boost::lexical_cast< size_t >( dict["buffers"] );
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}
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if (dict.count("buflen")) {
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_samples_per_buffer = boost::lexical_cast< size_t >( dict["buflen"] );
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}
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unsigned int transfers = 0;
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if (dict.count("transfers")) {
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transfers = boost::lexical_cast< size_t >( dict["transfers"] );
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}
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/* Require value to be >= 2 so we can ensure we have twice as many
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* buffers as transfers */
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if (_num_buffers <= 1) {
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_num_buffers = NUM_BUFFERS;
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}
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if (0 == _samples_per_buffer) {
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_samples_per_buffer = NUM_SAMPLES_PER_BUFFER;
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} else {
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/* For SC16_Q12, 1 sample = 2 int16_t's */
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_samples_per_buffer /= 2 * sizeof(int16_t);
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if (_samples_per_buffer < 1024 || _samples_per_buffer % 1024 != 0)
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_samples_per_buffer = NUM_SAMPLES_PER_BUFFER;
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}
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if (transfers == 0 || transfers > (_num_buffers / 2)) {
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transfers = _num_buffers / 2;
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}
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/* Initialize the stream */
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ret = bladerf_init_stream( &_stream, _dev, stream_callback,
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&_buffers, _num_buffers, BLADERF_FORMAT_SC16_Q12,
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_samples_per_buffer, transfers, this );
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if ( ret != 0 )
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std::cerr << "bladerf_init_stream has failed with " << ret << std::endl;
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/* Initialize buffer management */
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_buf_index = _next_to_tx = 0;
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_next_value = static_cast<int16_t*>(_buffers[0]);
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_samples_left = _samples_per_buffer;
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_filled = new bool[_num_buffers];
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if (!_filled) {
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throw std::runtime_error( std::string(__FUNCTION__) + ": " +
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"Failed to allocate _filled[]");
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}
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for (size_t i = 0; i < _num_buffers; ++i) {
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_filled[i] = false;
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}
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ret = bladerf_enable_module( _dev, BLADERF_MODULE_TX, true );
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if ( ret != 0 )
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std::cerr << "bladerf_enable_module has failed with " << ret << std::endl;
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set_running( true );
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_thread = gruel::thread( boost::bind(&bladerf_sink_c::write_task, this) );
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}
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/*
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* Our virtual destructor.
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*/
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bladerf_sink_c::~bladerf_sink_c ()
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{
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int ret;
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set_running(false);
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/* Ensure work() or callbacks return from wait() calls */
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_buf_status_lock.lock();
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_samp_avail.notify_all();
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_buffer_emptied.notify_all();
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_buf_status_lock.unlock();
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_thread.join();
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ret = bladerf_enable_module( _dev, BLADERF_MODULE_TX, false );
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if ( ret != 0 )
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std::cerr << "bladerf_enable_module has failed with " << ret << std::endl;
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/* Release stream resources */
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bladerf_deinit_stream(_stream);
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/* Close the device */
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bladerf_close( _dev );
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delete[] _filled;
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}
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void *bladerf_sink_c::stream_callback( struct bladerf *dev,
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struct bladerf_stream *stream,
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struct bladerf_metadata *metadata,
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void *samples,
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size_t num_samples,
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void *user_data )
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{
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bladerf_sink_c *obj = (bladerf_sink_c *) user_data;
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return obj->get_next_buffer( samples, num_samples );
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}
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static size_t buffer2index(void **buffers, void *current, size_t num_buffers)
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{
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for (size_t i = 0; i < num_buffers; ++i) {
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if (static_cast<char*>(current) == static_cast<char*>(buffers[i]))
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return i;
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}
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throw std::runtime_error( std::string(__FUNCTION__) + " " +
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"Has hit unexpected condition");
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}
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/* Fetch the next full buffer to pass down to the device */
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void *bladerf_sink_c::get_next_buffer( void *samples, size_t num_samples)
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{
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void *ret;
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bool running;
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{
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boost::unique_lock<boost::mutex> lock(_buf_status_lock);
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/* Mark the incoming buffer empty and notify work() */
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if (samples) {
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size_t buffer_emptied_index = buffer2index(_buffers, samples, _num_buffers);
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_filled[buffer_emptied_index] = false;
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_buffer_emptied.notify_one();
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}
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/* Wait for our next buffer to become filled */
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while ((running = is_running()) && !_filled[_next_to_tx]) {
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_samp_avail.wait(lock);
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}
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if (running) {
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ret = _buffers[_next_to_tx];
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_next_to_tx = (_next_to_tx + 1) % _num_buffers;
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} else {
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ret = NULL;
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}
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}
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return ret;
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}
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void bladerf_sink_c::write_task()
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{
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int status;
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/* Start stream and stay there until we kill the stream */
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status = bladerf_stream(_stream, BLADERF_MODULE_TX);
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if (status < 0)
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std::cerr << "Sink stream error: " << bladerf_strerror(status) << std::endl;
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set_running( false );
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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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int num_samples, to_copy;
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bool running = is_running();
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/* Total samples we want to process */
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num_samples = noutput_items;
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/* While there are still samples to copy out ... */
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while (running && num_samples > 0) {
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while (_samples_left && num_samples) {
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/* Scale and sign extend I and then Q */
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*_next_value = (int16_t)(real(*in) * 2000);
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_next_value++;
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*_next_value = (int16_t)(imag(*in) * 2000);
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_next_value++;
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/* Advance to next sample */
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in++;
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num_samples--;
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_samples_left--;
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}
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/* Advance to the next buffer if the current one is filled */
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if (_samples_left == 0) {
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{
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boost::unique_lock<boost::mutex> lock(_buf_status_lock);
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_filled[_buf_index] = true;
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_buf_index = (_buf_index + 1) % _num_buffers;
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_next_value = static_cast<int16_t*>(_buffers[_buf_index]);
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_samples_left = _samples_per_buffer;
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/* Signal that we have filled a buffer */
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_samp_avail.notify_one();
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/* Wait here if the next buffer isn't full. The callback will
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* signal us when it has freed up a buffer */
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while (_filled[_buf_index] && running) {
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_buffer_emptied.wait(lock);
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running = is_running();
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}
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}
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}
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}
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return running ? noutput_items : 0;
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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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/* We only support a single channel for each bladeRF */
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return 1;
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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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int ret;
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uint32_t actual;
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/* Set the Si5338 to be 2x this sample rate */
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/* Check to see if the sample rate is an integer */
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if( (uint32_t)round(rate) == (uint32_t)rate )
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{
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ret = bladerf_set_sample_rate( _dev, BLADERF_MODULE_TX, (uint32_t)rate, &actual );
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if( ret ) {
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throw std::runtime_error( std::string(__FUNCTION__) + " " +
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"has failed to set integer rate, error " +
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boost::lexical_cast<std::string>(ret) );
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}
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} else {
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/* TODO: Fractional sample rate */
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ret = bladerf_set_sample_rate( _dev, BLADERF_MODULE_TX, (uint32_t)rate, &actual );
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if( ret ) {
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throw std::runtime_error( std::string(__FUNCTION__) + " " +
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"has failed to set fractional rate, error " +
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boost::lexical_cast<std::string>(ret) );
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}
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}
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return get_sample_rate();
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}
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double bladerf_sink_c::get_sample_rate()
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{
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int ret;
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unsigned int rate = 0;
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ret = bladerf_get_sample_rate( _dev, BLADERF_MODULE_TX, &rate );
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if( ret ) {
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throw std::runtime_error( std::string(__FUNCTION__) + " " +
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"has failed to get sample rate, error " +
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boost::lexical_cast<std::string>(ret) );
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}
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return (double)rate;
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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 freq_range();
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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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int ret;
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/* Check frequency range */
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if( freq < get_freq_range( chan ).start() ||
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freq > get_freq_range( chan ).stop() ) {
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std::cerr << "Failed to set out of bound frequency: " << freq << std::endl;
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} else {
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ret = bladerf_set_frequency( _dev, BLADERF_MODULE_TX, (uint32_t)freq );
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if( ret ) {
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throw std::runtime_error( std::string(__FUNCTION__) + " " +
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"failed to set center frequency " +
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boost::lexical_cast<std::string>(freq) +
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", error " +
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boost::lexical_cast<std::string>(ret) );
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}
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}
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return get_center_freq( 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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uint32_t freq;
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int ret;
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ret = bladerf_get_frequency( _dev, BLADERF_MODULE_TX, &freq );
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if( ret ) {
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throw std::runtime_error( std::string(__FUNCTION__) + " " +
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"failed to get center frequency, error " +
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boost::lexical_cast<std::string>(ret) );
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}
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return (double)freq;
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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( 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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std::vector< std::string > names;
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names += "VGA1", "VGA2";
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return names;
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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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/* TODO: This is an overall system gain range. Given the VGA1 and VGA2
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how much total gain can we have in the system */
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return get_gain_range( "VGA2", chan ); /* we use only VGA2 here for now */
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}
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osmosdr::gain_range_t bladerf_sink_c::get_gain_range( const std::string & name, size_t chan )
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{
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osmosdr::gain_range_t range;
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if( name == "VGA1" ) {
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range = _vga1_range;
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} else if( name == "VGA2" ) {
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range = _vga2_range;
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} else {
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throw std::runtime_error( std::string(__FUNCTION__) + " " +
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|
"requested an invalid gain element " + name );
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}
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|
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return range;
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}
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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 false;
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}
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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 false;
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}
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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 set_gain( gain, "VGA2", chan ); /* we use only VGA2 here for now */
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}
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|
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double bladerf_sink_c::set_gain( double gain, const std::string & name, size_t chan)
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|
{
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int ret = 0;
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|
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|
if( name == "VGA1" ) {
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ret = bladerf_set_txvga1( _dev, (int)gain );
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|
} else if( name == "VGA2" ) {
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|
ret = bladerf_set_txvga2( _dev, (int)gain );
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|
} else {
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|
throw std::runtime_error( std::string(__FUNCTION__) + " " +
|
|
"requested to set the gain "
|
|
"of an unknown gain element " + name );
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|
}
|
|
|
|
/* Check for errors */
|
|
if( ret ) {
|
|
throw std::runtime_error( std::string(__FUNCTION__) + " " +
|
|
"could not set " + name + " gain, error " +
|
|
boost::lexical_cast<std::string>(ret) );
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|
}
|
|
|
|
return get_gain( name, chan );
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|
}
|
|
|
|
double bladerf_sink_c::get_gain( size_t chan )
|
|
{
|
|
return get_gain( "VGA2", chan ); /* we use only VGA2 here for now */
|
|
}
|
|
|
|
double bladerf_sink_c::get_gain( const std::string & name, size_t chan )
|
|
{
|
|
int g;
|
|
int ret = 0;
|
|
|
|
if( name == "VGA1" ) {
|
|
ret = bladerf_get_txvga1( _dev, &g );
|
|
} else if( name == "VGA2" ) {
|
|
ret = bladerf_get_txvga2( _dev, &g );
|
|
} else {
|
|
throw std::runtime_error( std::string(__FUNCTION__) + " " +
|
|
"requested to get the gain "
|
|
"of an unknown gain element " + name );
|
|
}
|
|
|
|
/* Check for errors */
|
|
if( ret ) {
|
|
throw std::runtime_error( std::string(__FUNCTION__) + " " +
|
|
"could not get " + name + " gain, error " +
|
|
boost::lexical_cast<std::string>(ret) );
|
|
}
|
|
|
|
return (double)g;
|
|
}
|
|
|
|
double bladerf_sink_c::set_bb_gain( double gain, size_t chan )
|
|
{
|
|
/* for TX, only VGA1 is in the BB path */
|
|
osmosdr::gain_range_t bb_gains = get_gain_range( "VGA1", chan );
|
|
|
|
double clip_gain = bb_gains.clip( gain, true );
|
|
gain = set_gain( clip_gain, "VGA1", chan );
|
|
|
|
return gain;
|
|
}
|
|
|
|
std::vector< std::string > bladerf_sink_c::get_antennas( size_t chan )
|
|
{
|
|
std::vector< std::string > antennas;
|
|
|
|
antennas += get_antenna( chan );
|
|
|
|
return antennas;
|
|
}
|
|
|
|
std::string bladerf_sink_c::set_antenna( const std::string & antenna, size_t chan )
|
|
{
|
|
return get_antenna( chan );
|
|
}
|
|
|
|
std::string bladerf_sink_c::get_antenna( size_t chan )
|
|
{
|
|
/* We only have a single transmit antenna here */
|
|
return "TX";
|
|
}
|
|
|
|
double bladerf_sink_c::set_bandwidth( double bandwidth, size_t chan )
|
|
{
|
|
int ret;
|
|
uint32_t actual;
|
|
|
|
ret = bladerf_set_bandwidth( _dev, BLADERF_MODULE_TX, (uint32_t)bandwidth, &actual );
|
|
if( ret ) {
|
|
throw std::runtime_error( std::string(__FUNCTION__) + " " +
|
|
"could not set bandwidth, error " +
|
|
boost::lexical_cast<std::string>(ret) );
|
|
}
|
|
|
|
return get_bandwidth();
|
|
}
|
|
|
|
double bladerf_sink_c::get_bandwidth( size_t chan )
|
|
{
|
|
uint32_t bandwidth;
|
|
int ret;
|
|
|
|
ret = bladerf_get_bandwidth( _dev, BLADERF_MODULE_TX, &bandwidth );
|
|
if( ret ) {
|
|
throw std::runtime_error( std::string(__FUNCTION__) + " " +
|
|
"could not get bandwidth, error " +
|
|
boost::lexical_cast<std::string>(ret) );
|
|
}
|
|
|
|
return (double)bandwidth;
|
|
}
|
|
|
|
osmosdr::freq_range_t bladerf_sink_c::get_bandwidth_range( size_t chan )
|
|
{
|
|
return filter_bandwidths();
|
|
}
|