/* -*- c++ -*- */ /* * Copyright 2004,2010-2012,2018 Free Software Foundation, Inc. * * This file is part of GNU Radio * * GNU Radio 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. * * GNU Radio 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 GNU Radio; see the file COPYING. If not, write to * the Free Software Foundation, Inc., 51 Franklin Street, * Boston, MA 02110-1301, USA. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "frequency_modulator_fc_impl.h" #include <gnuradio/fxpt.h> #include <gnuradio/io_signature.h> #include <gnuradio/math.h> #include <cmath> namespace gr { namespace analog { frequency_modulator_fc::sptr frequency_modulator_fc::make(float sensitivity) { return gnuradio::get_initial_sptr(new frequency_modulator_fc_impl(sensitivity)); } frequency_modulator_fc_impl::frequency_modulator_fc_impl(float sensitivity) : sync_block("frequency_modulator_fc", io_signature::make(1, 1, sizeof(float)), io_signature::make(1, 1, sizeof(gr_complex))), d_sensitivity(sensitivity), d_phase(0) { } frequency_modulator_fc_impl::~frequency_modulator_fc_impl() {} int frequency_modulator_fc_impl::work(int noutput_items, gr_vector_const_void_star& input_items, gr_vector_void_star& output_items) { const float* in = (const float*)input_items[0]; gr_complex* out = (gr_complex*)output_items[0]; for (int i = 0; i < noutput_items; i++) { d_phase = d_phase + d_sensitivity * in[i]; // place phase in [-pi, +pi[ #define F_PI ((float)(GR_M_PI)) d_phase = std::fmod(d_phase + F_PI, 2.0f * F_PI) - F_PI; float oi, oq; int32_t angle = gr::fxpt::float_to_fixed(d_phase); gr::fxpt::sincos(angle, &oq, &oi); out[i] = gr_complex(oi, oq); } return noutput_items; } void frequency_modulator_fc_impl::setup_rpc() { #ifdef GR_CTRLPORT add_rpc_variable( rpcbasic_sptr(new rpcbasic_register_get<frequency_modulator_fc, float>( alias(), "sensitivity", &frequency_modulator_fc::sensitivity, pmt::mp(-1024.0f), pmt::mp(1024.0f), pmt::mp(0.0f), "", "Sensitivity", RPC_PRIVLVL_MIN, DISPTIME | DISPOPTSTRIP))); add_rpc_variable( rpcbasic_sptr(new rpcbasic_register_set<frequency_modulator_fc, float>( alias(), "sensitivity", &frequency_modulator_fc::set_sensitivity, pmt::mp(-1024.0f), pmt::mp(1024.0f), pmt::mp(0.0f), "", "sensitivity", RPC_PRIVLVL_MIN, DISPNULL))); #endif /* GR_CTRLPORT */ } } /* namespace analog */ } /* namespace gr */