Piotr Krysik | ea34c01 | 2016-10-02 18:53:43 +0200 | [diff] [blame] | 1 | #!/usr/bin/env python2 |
Piotr Krysik | 0982673 | 2016-07-15 13:14:24 +0200 | [diff] [blame] | 2 | # -*- coding: utf-8 -*- |
Piotr Krysik | ea34c01 | 2016-10-02 18:53:43 +0200 | [diff] [blame] | 3 | # @file |
Piotr Krysik | a6268a5 | 2017-08-23 16:02:19 +0200 | [diff] [blame] | 4 | # @author (C) 2016 by Piotr Krysik <ptrkrysik@gmail.com> |
Piotr Krysik | ea34c01 | 2016-10-02 18:53:43 +0200 | [diff] [blame] | 5 | # @section LICENSE |
| 6 | # |
| 7 | # Gr-gsm 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) |
| 10 | # any later version. |
| 11 | # |
| 12 | # Gr-gsm 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. |
| 16 | # |
| 17 | # You should have received a copy of the GNU General Public License |
| 18 | # along with gr-gsm; see the file COPYING. If not, write to |
| 19 | # the Free Software Foundation, Inc., 51 Franklin Street, |
| 20 | # Boston, MA 02110-1301, USA. |
| 21 | # |
Piotr Krysik | 0982673 | 2016-07-15 13:14:24 +0200 | [diff] [blame] | 22 | ################################################## |
| 23 | # GNU Radio Python Flow Graph |
Piotr Krysik | 83afe73 | 2016-07-17 22:48:35 +0200 | [diff] [blame] | 24 | # Title: Clock Offset Corrector Tagged |
Piotr Krysik | 0982673 | 2016-07-15 13:14:24 +0200 | [diff] [blame] | 25 | # Author: Piotr Krysik |
| 26 | # Description: Clock offset corrector with blocks that use tags to switch offsets |
Piotr Krysik | 7973538 | 2016-07-20 21:39:40 +0200 | [diff] [blame] | 27 | # Generated: Wed Jul 20 20:07:11 2016 |
Piotr Krysik | 0982673 | 2016-07-15 13:14:24 +0200 | [diff] [blame] | 28 | ################################################## |
| 29 | |
| 30 | from gnuradio import gr |
| 31 | from gnuradio.filter import firdes |
| 32 | import grgsm |
| 33 | import math |
| 34 | |
| 35 | |
| 36 | class clock_offset_corrector_tagged(grgsm.hier_block): |
| 37 | |
Piotr Krysik | 83afe73 | 2016-07-17 22:48:35 +0200 | [diff] [blame] | 38 | def __init__(self, fc=936.6e6, osr=4, ppm=0, samp_rate_in=1625000.0/6.0*4.0): |
Piotr Krysik | 0982673 | 2016-07-15 13:14:24 +0200 | [diff] [blame] | 39 | gr.hier_block2.__init__( |
Piotr Krysik | 83afe73 | 2016-07-17 22:48:35 +0200 | [diff] [blame] | 40 | self, "Clock Offset Corrector Tagged", |
Piotr Krysik | 0982673 | 2016-07-15 13:14:24 +0200 | [diff] [blame] | 41 | gr.io_signature(1, 1, gr.sizeof_gr_complex*1), |
| 42 | gr.io_signature(1, 1, gr.sizeof_gr_complex*1), |
| 43 | ) |
| 44 | self.message_port_register_hier_in("ctrl") |
| 45 | |
| 46 | ################################################## |
| 47 | # Parameters |
| 48 | ################################################## |
| 49 | self.fc = fc |
Piotr Krysik | 83afe73 | 2016-07-17 22:48:35 +0200 | [diff] [blame] | 50 | self.osr = osr |
Piotr Krysik | 0982673 | 2016-07-15 13:14:24 +0200 | [diff] [blame] | 51 | self.ppm = ppm |
| 52 | self.samp_rate_in = samp_rate_in |
| 53 | |
| 54 | ################################################## |
| 55 | # Variables |
| 56 | ################################################## |
Piotr Krysik | 83afe73 | 2016-07-17 22:48:35 +0200 | [diff] [blame] | 57 | self.gsm_symb_rate = gsm_symb_rate = 1625000.0/6.0 |
| 58 | self.samp_rate_out = samp_rate_out = osr*gsm_symb_rate |
Piotr Krysik | 0982673 | 2016-07-15 13:14:24 +0200 | [diff] [blame] | 59 | |
| 60 | ################################################## |
| 61 | # Blocks |
| 62 | ################################################## |
Piotr Krysik | d1ca389 | 2016-07-17 11:33:50 +0200 | [diff] [blame] | 63 | self.gsm_msg_to_tag_0 = grgsm.msg_to_tag() |
Piotr Krysik | 83afe73 | 2016-07-17 22:48:35 +0200 | [diff] [blame] | 64 | self.gsm_controlled_rotator_cc_0 = grgsm.controlled_rotator_cc(ppm/1.0e6*2*math.pi*fc/samp_rate_out) |
Piotr Krysik | 7973538 | 2016-07-20 21:39:40 +0200 | [diff] [blame] | 65 | self.gsm_controlled_fractional_resampler_cc_0 = grgsm.controlled_fractional_resampler_cc(0, (1-ppm/1.0e6)*(samp_rate_in/samp_rate_out)) |
Piotr Krysik | 0982673 | 2016-07-15 13:14:24 +0200 | [diff] [blame] | 66 | |
| 67 | ################################################## |
| 68 | # Connections |
| 69 | ################################################## |
Piotr Krysik | d1ca389 | 2016-07-17 11:33:50 +0200 | [diff] [blame] | 70 | self.msg_connect((self, 'ctrl'), (self.gsm_msg_to_tag_0, 'msg')) |
| 71 | self.connect((self.gsm_controlled_fractional_resampler_cc_0, 0), (self.gsm_controlled_rotator_cc_0, 0)) |
Piotr Krysik | 0982673 | 2016-07-15 13:14:24 +0200 | [diff] [blame] | 72 | self.connect((self.gsm_controlled_rotator_cc_0, 0), (self, 0)) |
Piotr Krysik | d1ca389 | 2016-07-17 11:33:50 +0200 | [diff] [blame] | 73 | self.connect((self.gsm_msg_to_tag_0, 0), (self.gsm_controlled_fractional_resampler_cc_0, 0)) |
| 74 | self.connect((self, 0), (self.gsm_msg_to_tag_0, 0)) |
Piotr Krysik | 0982673 | 2016-07-15 13:14:24 +0200 | [diff] [blame] | 75 | |
| 76 | def get_fc(self): |
| 77 | return self.fc |
| 78 | |
| 79 | def set_fc(self, fc): |
| 80 | self.fc = fc |
Piotr Krysik | 83afe73 | 2016-07-17 22:48:35 +0200 | [diff] [blame] | 81 | self.gsm_controlled_rotator_cc_0.set_phase_inc(self.ppm/1.0e6*2*math.pi*self.fc/self.samp_rate_out) |
| 82 | |
| 83 | def get_osr(self): |
| 84 | return self.osr |
| 85 | |
| 86 | def set_osr(self, osr): |
| 87 | self.osr = osr |
| 88 | self.set_samp_rate_out(self.osr*self.gsm_symb_rate) |
Piotr Krysik | 0982673 | 2016-07-15 13:14:24 +0200 | [diff] [blame] | 89 | |
| 90 | def get_ppm(self): |
| 91 | return self.ppm |
| 92 | |
| 93 | def set_ppm(self, ppm): |
| 94 | self.ppm = ppm |
Piotr Krysik | 83afe73 | 2016-07-17 22:48:35 +0200 | [diff] [blame] | 95 | self.gsm_controlled_rotator_cc_0.set_phase_inc(self.ppm/1.0e6*2*math.pi*self.fc/self.samp_rate_out) |
Piotr Krysik | 7973538 | 2016-07-20 21:39:40 +0200 | [diff] [blame] | 96 | self.gsm_controlled_fractional_resampler_cc_0.set_resamp_ratio((1-self.ppm/1.0e6)*(self.samp_rate_in/self.samp_rate_out)) |
Piotr Krysik | 0982673 | 2016-07-15 13:14:24 +0200 | [diff] [blame] | 97 | |
| 98 | def get_samp_rate_in(self): |
| 99 | return self.samp_rate_in |
| 100 | |
| 101 | def set_samp_rate_in(self, samp_rate_in): |
| 102 | self.samp_rate_in = samp_rate_in |
Piotr Krysik | 7973538 | 2016-07-20 21:39:40 +0200 | [diff] [blame] | 103 | self.gsm_controlled_fractional_resampler_cc_0.set_resamp_ratio((1-self.ppm/1.0e6)*(self.samp_rate_in/self.samp_rate_out)) |
Piotr Krysik | 83afe73 | 2016-07-17 22:48:35 +0200 | [diff] [blame] | 104 | |
| 105 | def get_gsm_symb_rate(self): |
| 106 | return self.gsm_symb_rate |
| 107 | |
| 108 | def set_gsm_symb_rate(self, gsm_symb_rate): |
| 109 | self.gsm_symb_rate = gsm_symb_rate |
| 110 | self.set_samp_rate_out(self.osr*self.gsm_symb_rate) |
Piotr Krysik | 0982673 | 2016-07-15 13:14:24 +0200 | [diff] [blame] | 111 | |
| 112 | def get_samp_rate_out(self): |
| 113 | return self.samp_rate_out |
| 114 | |
| 115 | def set_samp_rate_out(self, samp_rate_out): |
| 116 | self.samp_rate_out = samp_rate_out |
Piotr Krysik | 83afe73 | 2016-07-17 22:48:35 +0200 | [diff] [blame] | 117 | self.gsm_controlled_rotator_cc_0.set_phase_inc(self.ppm/1.0e6*2*math.pi*self.fc/self.samp_rate_out) |
Piotr Krysik | 7973538 | 2016-07-20 21:39:40 +0200 | [diff] [blame] | 118 | self.gsm_controlled_fractional_resampler_cc_0.set_resamp_ratio((1-self.ppm/1.0e6)*(self.samp_rate_in/self.samp_rate_out)) |