3 * Copyright 2009 Free Software Foundation, Inc.
5 * This file is part of GNU Radio
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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)
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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 #ifndef INCLUDED_NOAA_HRPT_PLL_CF_H
24 #define INCLUDED_NOAA_HRPT_PLL_CF_H
26 #include <gr_sync_block.h>
28 class noaa_hrpt_pll_cf;
29 typedef boost::shared_ptr<noaa_hrpt_pll_cf> noaa_hrpt_pll_cf_sptr;
32 noaa_make_hrpt_pll_cf(float alpha, float beta, float max_offset);
34 class noaa_hrpt_pll_cf : public gr_sync_block
36 friend noaa_hrpt_pll_cf_sptr noaa_make_hrpt_pll_cf(float alpha, float beta, float max_offset);
37 noaa_hrpt_pll_cf(float alpha, float beta, float max_offset);
39 float d_alpha; // 1st order loop constant
40 float d_beta; // 2nd order loop constant
41 float d_max_offset; // Maximum frequency offset, radians/sample
42 float d_phase; // Instantaneous carrier phase
43 float d_freq; // Instantaneous carrier frequency, radians/sample
46 virtual int work(int noutput_items,
47 gr_vector_const_void_star &input_items,
48 gr_vector_void_star &output_items);
50 void set_alpha(float alpha) { d_alpha = alpha; }
51 void set_beta(float beta) { d_beta = beta; }
52 void set_max_offset(float max_offset) { d_max_offset = max_offset; }
55 #endif /* INCLUDED_NOAA_HRPT_PLL_CF_H */