mirror of
https://github.com/gnss-sdr/gnss-sdr
synced 2024-12-14 20:20:35 +00:00
58b280afb6
git-svn-id: https://svn.code.sf.net/p/gnss-sdr/code/trunk@368 64b25241-fba3-4117-9849-534c7e92360d
118 lines
3.3 KiB
C++
118 lines
3.3 KiB
C++
/*!
|
|
* \file gn3s_source_cc.cc
|
|
* \brief GNU Radio source block to acces to SiGe GN3S USB sampler v2.
|
|
* \author Javier Arribas, 2012. jarribas(at)cttc.es
|
|
*
|
|
* -------------------------------------------------------------------------
|
|
*
|
|
* Copyright (C) 2010-2012 (see AUTHORS file for a list of contributors)
|
|
*
|
|
* GNSS-SDR is a software defined Global Navigation
|
|
* Satellite Systems receiver
|
|
*
|
|
* This file is part of GNSS-SDR.
|
|
*
|
|
* GNSS-SDR 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 of the License, or
|
|
* at your option) any later version.
|
|
*
|
|
* GNSS-SDR 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 GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* -------------------------------------------------------------------------
|
|
*/
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <gn3s_source_cc.h>
|
|
#include <gn3s_defines.h>
|
|
#include <gnuradio/io_signature.h>
|
|
|
|
|
|
/*
|
|
* Create a new instance of howto_square_ff and return
|
|
* a boost shared_ptr. This is effectively the public constructor.
|
|
*/
|
|
gn3s_source_cc_sptr
|
|
gn3s_make_source_cc ()
|
|
{
|
|
return gnuradio::get_initial_sptr(new gn3s_source_cc ());
|
|
}
|
|
|
|
/*
|
|
* Specify constraints on number of input and output streams.
|
|
* This info is used to construct the input and output signatures
|
|
* (2nd & 3rd args to gr::block's constructor). The input and
|
|
* output signatures are used by the runtime system to
|
|
* check that a valid number and type of inputs and outputs
|
|
* are connected to this block. In this case, we accept
|
|
* only 1 input and 1 output.
|
|
*/
|
|
static const int MIN_IN = 0; // mininum number of input streams
|
|
static const int MAX_IN = 0; // maximum number of input streams
|
|
static const int MIN_OUT = 1; // minimum number of output streams
|
|
static const int MAX_OUT = 1; // maximum number of output streams
|
|
|
|
/*
|
|
* The private constructor
|
|
*/
|
|
gn3s_source_cc::gn3s_source_cc ()
|
|
: gr::block ("gn3s_cc",
|
|
gr::io_signature::make(MIN_IN, MAX_IN, sizeof (gr_complex)),
|
|
gr::io_signature::make(MIN_OUT, MAX_OUT, sizeof (gr_complex)))
|
|
{
|
|
// constructor code here
|
|
gn3s_drv = new gn3s_Source();
|
|
fprintf(stdout,"GN3S Start\n");
|
|
}
|
|
|
|
/*
|
|
* Our virtual destructor.
|
|
*/
|
|
gn3s_source_cc::~gn3s_source_cc ()
|
|
{
|
|
// destructor code here
|
|
if(gn3s_drv != NULL)
|
|
{
|
|
fprintf(stdout,"Destructing GN3S\n");
|
|
delete gn3s_drv;
|
|
//delete packet;
|
|
}
|
|
}
|
|
|
|
int
|
|
gn3s_source_cc::general_work (int noutput_items,
|
|
gr_vector_int &ninput_items,
|
|
gr_vector_const_void_star &input_items,
|
|
gr_vector_void_star &output_items)
|
|
{
|
|
int n_samples_rx;
|
|
gr_complex *out = (gr_complex *) output_items[0];
|
|
|
|
if (noutput_items<=GN3S_SAMPS_5MS)
|
|
{
|
|
gn3s_drv->Read(&packet,noutput_items);
|
|
n_samples_rx = noutput_items;
|
|
}
|
|
else
|
|
{
|
|
gn3s_drv->Read(&packet,GN3S_SAMPS_5MS);
|
|
n_samples_rx = GN3S_SAMPS_5MS;
|
|
}
|
|
for (int i = 0; i < n_samples_rx; i++)
|
|
{
|
|
out[i] = gr_complex(packet.data[i].i, packet.data[i].q);
|
|
}
|
|
|
|
// Tell runtime system how many output items we produced.
|
|
return n_samples_rx;
|
|
}
|
|
|