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/* -*- c++ -*- */
/*
* Copyright 2004,2010-2012 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "pll_refout_cc_impl.h"
#include <gr_io_signature.h>
#include <gr_sincos.h>
#include <math.h>
#include <gr_math.h>
namespace gr {
namespace analog {
#ifndef M_TWOPI
#define M_TWOPI (2.0f*M_PI)
#endif
pll_refout_cc::sptr
pll_refout_cc::make(float loop_bw, float max_freq, float min_freq)
{
return gnuradio::get_initial_sptr
(new pll_refout_cc_impl(loop_bw, max_freq, min_freq));
}
pll_refout_cc_impl::pll_refout_cc_impl(float loop_bw, float max_freq, float min_freq)
: gr_sync_block("pll_refout_cc",
gr_make_io_signature(1, 1, sizeof(gr_complex)),
gr_make_io_signature(1, 1, sizeof(gr_complex))),
gri_control_loop(loop_bw, max_freq, min_freq)
{
}
pll_refout_cc_impl::~pll_refout_cc_impl()
{
}
float
pll_refout_cc_impl::mod_2pi(float in)
{
if(in > M_PI)
return in - M_TWOPI;
else if(in < -M_PI)
return in+ M_TWOPI;
else
return in;
}
float
pll_refout_cc_impl::phase_detector(gr_complex sample,float ref_phase)
{
float sample_phase;
sample_phase = gr_fast_atan2f(sample.imag(),sample.real());
return mod_2pi(sample_phase-ref_phase);
}
int
pll_refout_cc_impl::work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
const gr_complex *iptr = (gr_complex*)input_items[0];
gr_complex *optr = (gr_complex*)output_items[0];
float error;
float t_imag, t_real;
int size = noutput_items;
while(size-- > 0) {
gr_sincosf(d_phase,&t_imag,&t_real);
*optr++ = gr_complex(t_real,t_imag);
error = phase_detector(*iptr++,d_phase);
advance_loop(error);
phase_wrap();
frequency_limit();
}
return noutput_items;
}
void
pll_refout_cc_impl::set_loop_bandwidth(float bw)
{
gri_control_loop::set_loop_bandwidth(bw);
}
void
pll_refout_cc_impl::set_damping_factor(float df)
{
gri_control_loop::set_damping_factor(df);
}
void
pll_refout_cc_impl::set_alpha(float alpha)
{
gri_control_loop::set_alpha(alpha);
}
void
pll_refout_cc_impl::set_beta(float beta)
{
gri_control_loop::set_beta(beta);
}
void
pll_refout_cc_impl::set_frequency(float freq)
{
gri_control_loop::set_frequency(freq);
}
void
pll_refout_cc_impl::set_phase(float phase)
{
gri_control_loop::set_phase(phase);
}
void
pll_refout_cc_impl::set_min_freq(float freq)
{
gri_control_loop::set_min_freq(freq);
}
void
pll_refout_cc_impl::set_max_freq(float freq)
{
gri_control_loop::set_max_freq(freq);
}
float
pll_refout_cc_impl::get_loop_bandwidth() const
{
return gri_control_loop::get_loop_bandwidth();
}
float
pll_refout_cc_impl::get_damping_factor() const
{
return gri_control_loop::get_damping_factor();
}
float
pll_refout_cc_impl::get_alpha() const
{
return gri_control_loop::get_alpha();
}
float
pll_refout_cc_impl::get_beta() const
{
return gri_control_loop::get_beta();
}
float
pll_refout_cc_impl::get_frequency() const
{
return gri_control_loop::get_frequency();
}
float
pll_refout_cc_impl::get_phase() const
{
return gri_control_loop::get_phase();
}
float
pll_refout_cc_impl::get_min_freq() const
{
return gri_control_loop::get_min_freq();
}
float
pll_refout_cc_impl::get_max_freq() const
{
return gri_control_loop::get_max_freq();
}
} /* namespace analog */
} /* namespace gr */
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