3 * Copyright 2004 Free Software Foundation, Inc.
5 * This file is part of GNU Radio
7 * GNU Radio is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3, or (at your option)
12 * GNU Radio is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Radio; see the file COPYING. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street,
20 * Boston, MA 02110-1301, USA.
23 // WARNING: this file is machine generated. Edits will be over written
29 #include <gr_pll_freqdet_cf.h>
30 #include <gr_io_signature.h>
33 #define M_TWOPI (2*M_PI)
35 gr_pll_freqdet_cf_sptr
36 gr_make_pll_freqdet_cf (float alpha, float beta, float max_freq, float min_freq)
38 return gr_pll_freqdet_cf_sptr (new gr_pll_freqdet_cf (alpha, beta, max_freq, min_freq));
41 gr_pll_freqdet_cf::gr_pll_freqdet_cf (float alpha, float beta, float max_freq, float min_freq)
42 : gr_sync_block ("pll_freqdet_cf",
43 gr_make_io_signature (1, 1, sizeof (gr_complex)),
44 gr_make_io_signature (1, 1, sizeof (float))),
45 d_alpha(alpha), d_beta(beta),
46 d_max_freq(max_freq), d_min_freq(min_freq),
47 d_phase(0), d_freq((max_freq+min_freq)/2)
52 gr_pll_freqdet_cf::mod_2pi (float in)
63 gr_pll_freqdet_cf::phase_detector(gr_complex sample,float ref_phase)
66 sample_phase = atan2(sample.imag(),sample.real());
67 return mod_2pi(sample_phase-ref_phase);
71 gr_pll_freqdet_cf::work (int noutput_items,
72 gr_vector_const_void_star &input_items,
73 gr_vector_void_star &output_items)
75 const gr_complex *iptr = (gr_complex *) input_items[0];
76 float *optr = (float *) output_items[0];
79 int size = noutput_items;
82 error = phase_detector(*iptr++,d_phase);
84 d_freq = d_freq + d_beta * error;
85 d_phase = mod_2pi(d_phase + d_freq + d_alpha * error);
87 if (d_freq > d_max_freq)
89 else if (d_freq < d_min_freq)