kopia lustrzana https://github.com/rpp0/gr-lora
76 wiersze
2.7 KiB
C++
76 wiersze
2.7 KiB
C++
/* -*- c++ -*- */
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/*
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* Copyright 2017 Pieter Robyns.
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3, or (at your option)
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* any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gnuradio/io_signature.h>
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#include "channelizer_impl.h"
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namespace gr {
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namespace lora {
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channelizer::sptr
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channelizer::make(float samp_rate, float center_freq, std::vector<float> channel_list, uint32_t bandwidth, uint32_t decimation) {
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return gnuradio::get_initial_sptr
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(new channelizer_impl(samp_rate, center_freq, channel_list, bandwidth, decimation));
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}
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/*
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* The private constructor
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*/
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channelizer_impl::channelizer_impl(float samp_rate, float center_freq, std::vector<float> channel_list, uint32_t bandwidth, uint32_t decimation)
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: gr::hier_block2("channelizer",
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gr::io_signature::make(1, 1, sizeof(gr_complex)),
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gr::io_signature::make(channel_list.size(), channel_list.size(), sizeof(gr_complex))),
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d_cfo(0.0)
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{
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d_lpf = gr::filter::firdes::low_pass(1.0, samp_rate, (bandwidth/2)+15000, 10000, fft::window::win_type::WIN_HAMMING, 6.67);
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d_freq_offset = channel_list[0] - center_freq;
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d_xlating_fir_filter = gr::filter::freq_xlating_fir_filter_ccf::make(decimation, d_lpf, d_freq_offset, samp_rate);
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d_controller = gr::lora::controller::make((void*)this);
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//d_resampler = gr::filter::fractional_resampler_cc::make(0, (float)in_samp_rate / (float)out_samp_rate);
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//self.delay = delay(gr.sizeof_gr_complex, int((len(lpf)-1) / 2.0))
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//Create message ports
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message_port_register_hier_in(pmt::intern("control"));
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connect(self(), 0, d_xlating_fir_filter, 0);
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connect(d_xlating_fir_filter, 0, self(), 0);
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msg_connect(self(), pmt::intern("control"), d_controller, pmt::intern("control"));
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}
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/*
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* Our virtual destructor.
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*/
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channelizer_impl::~channelizer_impl() {
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}
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void channelizer_impl::apply_cfo(float cfo) {
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d_cfo += cfo;
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d_xlating_fir_filter->set_center_freq(d_freq_offset + d_cfo);
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}
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} /* namespace lora */
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} /* namespace gr */
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