| #!/usr/bin/env python2 |
| # -*- coding: utf-8 -*- |
| # @file |
| # @author (C) 2016 by Piotr Krysik <ptrkrysik@gmail.com> |
| # @section LICENSE |
| # |
| # Gr-gsm 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. |
| # |
| # Gr-gsm 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 gr-gsm; see the file COPYING. If not, write to |
| # the Free Software Foundation, Inc., 51 Franklin Street, |
| # Boston, MA 02110-1301, USA. |
| # |
| ################################################## |
| # GNU Radio Python Flow Graph |
| # Title: Clock Offset Corrector Tagged |
| # Author: Piotr Krysik |
| # Description: Clock offset corrector with blocks that use tags to switch offsets |
| # Generated: Wed Jul 20 20:07:11 2016 |
| ################################################## |
| |
| from gnuradio import gr |
| from gnuradio.filter import firdes |
| import grgsm |
| import math |
| |
| |
| class clock_offset_corrector_tagged(grgsm.hier_block): |
| |
| def __init__(self, fc=936.6e6, osr=4, ppm=0, samp_rate_in=1625000.0/6.0*4.0): |
| gr.hier_block2.__init__( |
| self, "Clock Offset Corrector Tagged", |
| gr.io_signature(1, 1, gr.sizeof_gr_complex*1), |
| gr.io_signature(1, 1, gr.sizeof_gr_complex*1), |
| ) |
| self.message_port_register_hier_in("ctrl") |
| |
| ################################################## |
| # Parameters |
| ################################################## |
| self.fc = fc |
| self.osr = osr |
| self.ppm = ppm |
| self.samp_rate_in = samp_rate_in |
| |
| ################################################## |
| # Variables |
| ################################################## |
| self.gsm_symb_rate = gsm_symb_rate = 1625000.0/6.0 |
| self.samp_rate_out = samp_rate_out = osr*gsm_symb_rate |
| |
| ################################################## |
| # Blocks |
| ################################################## |
| self.gsm_msg_to_tag_0 = grgsm.msg_to_tag() |
| self.gsm_controlled_rotator_cc_0 = grgsm.controlled_rotator_cc(ppm/1.0e6*2*math.pi*fc/samp_rate_out) |
| self.gsm_controlled_fractional_resampler_cc_0 = grgsm.controlled_fractional_resampler_cc(0, (1-ppm/1.0e6)*(samp_rate_in/samp_rate_out)) |
| |
| ################################################## |
| # Connections |
| ################################################## |
| self.msg_connect((self, 'ctrl'), (self.gsm_msg_to_tag_0, 'msg')) |
| self.connect((self.gsm_controlled_fractional_resampler_cc_0, 0), (self.gsm_controlled_rotator_cc_0, 0)) |
| self.connect((self.gsm_controlled_rotator_cc_0, 0), (self, 0)) |
| self.connect((self.gsm_msg_to_tag_0, 0), (self.gsm_controlled_fractional_resampler_cc_0, 0)) |
| self.connect((self, 0), (self.gsm_msg_to_tag_0, 0)) |
| |
| def get_fc(self): |
| return self.fc |
| |
| def set_fc(self, fc): |
| self.fc = fc |
| self.gsm_controlled_rotator_cc_0.set_phase_inc(self.ppm/1.0e6*2*math.pi*self.fc/self.samp_rate_out) |
| |
| def get_osr(self): |
| return self.osr |
| |
| def set_osr(self, osr): |
| self.osr = osr |
| self.set_samp_rate_out(self.osr*self.gsm_symb_rate) |
| |
| def get_ppm(self): |
| return self.ppm |
| |
| def set_ppm(self, ppm): |
| self.ppm = ppm |
| self.gsm_controlled_rotator_cc_0.set_phase_inc(self.ppm/1.0e6*2*math.pi*self.fc/self.samp_rate_out) |
| self.gsm_controlled_fractional_resampler_cc_0.set_resamp_ratio((1-self.ppm/1.0e6)*(self.samp_rate_in/self.samp_rate_out)) |
| |
| def get_samp_rate_in(self): |
| return self.samp_rate_in |
| |
| def set_samp_rate_in(self, samp_rate_in): |
| self.samp_rate_in = samp_rate_in |
| self.gsm_controlled_fractional_resampler_cc_0.set_resamp_ratio((1-self.ppm/1.0e6)*(self.samp_rate_in/self.samp_rate_out)) |
| |
| def get_gsm_symb_rate(self): |
| return self.gsm_symb_rate |
| |
| def set_gsm_symb_rate(self, gsm_symb_rate): |
| self.gsm_symb_rate = gsm_symb_rate |
| self.set_samp_rate_out(self.osr*self.gsm_symb_rate) |
| |
| def get_samp_rate_out(self): |
| return self.samp_rate_out |
| |
| def set_samp_rate_out(self, samp_rate_out): |
| self.samp_rate_out = samp_rate_out |
| self.gsm_controlled_rotator_cc_0.set_phase_inc(self.ppm/1.0e6*2*math.pi*self.fc/self.samp_rate_out) |
| self.gsm_controlled_fractional_resampler_cc_0.set_resamp_ratio((1-self.ppm/1.0e6)*(self.samp_rate_in/self.samp_rate_out)) |