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/* -*- c++ -*- */
/*
* Copyright 2004,2010-2012,2018 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#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::make_block_sptr<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 */
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