mirror of https://github.com/gnss-sdr/gnss-sdr
118 lines
3.3 KiB
C++
118 lines
3.3 KiB
C++
/*!
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* \file gn3s_source_cc.cc
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* \brief GNU Radio source block to acces to SiGe GN3S USB sampler v2.
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* \author Javier Arribas, 2012. jarribas(at)cttc.es
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*
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* -------------------------------------------------------------------------
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*
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* Copyright (C) 2010-2012 (see AUTHORS file for a list of contributors)
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*
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* GNSS-SDR is a software defined Global Navigation
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* Satellite Systems receiver
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*
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* This file is part of GNSS-SDR.
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*
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* GNSS-SDR 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 of the License, or
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* at your option) any later version.
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*
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* GNSS-SDR 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 GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
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*
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* -------------------------------------------------------------------------
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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 <gn3s_source_cc.h>
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#include <gn3s_defines.h>
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#include <gnuradio/io_signature.h>
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/*
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* Create a new instance of howto_square_ff and return
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* a boost shared_ptr. This is effectively the public constructor.
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*/
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gn3s_source_cc_sptr
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gn3s_make_source_cc ()
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{
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return gnuradio::get_initial_sptr(new gn3s_source_cc ());
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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 1 input and 1 output.
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*/
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static const int MIN_IN = 0; // mininum number of input streams
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static const int MAX_IN = 0; // maximum number of input streams
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static const int MIN_OUT = 1; // minimum number of output streams
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static const int MAX_OUT = 1; // maximum number of output streams
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/*
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* The private constructor
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*/
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gn3s_source_cc::gn3s_source_cc ()
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: gr::block ("gn3s_cc",
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gr::io_signature::make(MIN_IN, MAX_IN, sizeof (gr_complex)),
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gr::io_signature::make(MIN_OUT, MAX_OUT, sizeof (gr_complex)))
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{
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// constructor code here
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gn3s_drv = new gn3s_Source();
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fprintf(stdout,"GN3S Start\n");
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}
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/*
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* Our virtual destructor.
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*/
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gn3s_source_cc::~gn3s_source_cc ()
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{
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// destructor code here
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if(gn3s_drv != NULL)
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{
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fprintf(stdout,"Destructing GN3S\n");
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delete gn3s_drv;
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//delete packet;
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}
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}
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int
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gn3s_source_cc::general_work (int noutput_items,
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gr_vector_int &ninput_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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int n_samples_rx;
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gr_complex *out = (gr_complex *) output_items[0];
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if (noutput_items<=GN3S_SAMPS_5MS)
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{
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gn3s_drv->Read(&packet,noutput_items);
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n_samples_rx = noutput_items;
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}
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else
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{
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gn3s_drv->Read(&packet,GN3S_SAMPS_5MS);
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n_samples_rx = GN3S_SAMPS_5MS;
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}
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for (int i = 0; i < n_samples_rx; i++)
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{
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out[i] = gr_complex(packet.data[i].i, packet.data[i].q);
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}
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// Tell runtime system how many output items we produced.
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return n_samples_rx;
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}
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