mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
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1210 lines
37 KiB
C++
Executable File
1210 lines
37 KiB
C++
Executable File
/*
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* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
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*
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* This file is part of PortaPack.
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*
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* This program 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 2, or (at your option)
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* any later version.
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*
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* This program 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 program; 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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#include "ch.h"
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#include "test.h"
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#include "lpc43xx_cpp.hpp"
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#include "portapack_shared_memory.hpp"
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#include "portapack_dma.hpp"
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#include "gpdma.hpp"
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#include "baseband.hpp"
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#include "baseband_dma.hpp"
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#include "event_m4.hpp"
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#include "rssi.hpp"
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#include "rssi_dma.hpp"
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#include "touch_dma.hpp"
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#include "dsp_decimate.hpp"
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#include "dsp_demodulate.hpp"
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#include "dsp_fft.hpp"
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#include "dsp_fir_taps.hpp"
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#include "dsp_iir.hpp"
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#include "baseband_stats_collector.hpp"
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#include "rssi_stats_collector.hpp"
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#include "channel_stats_collector.hpp"
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#include "audio_stats_collector.hpp"
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#include "block_decimator.hpp"
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#include "clock_recovery.hpp"
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#include "access_code_correlator.hpp"
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#include "packet_builder.hpp"
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#include "message_queue.hpp"
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#include "utility.hpp"
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#include "debug.hpp"
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#include "audio.hpp"
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#include "audio_dma.hpp"
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#include "gcc.hpp"
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#include <cstdint>
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#include <cstddef>
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#include <array>
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#include <string>
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#include <bitset>
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#include <math.h>
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constexpr auto baseband_thread_priority = NORMALPRIO + 20;
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constexpr auto rssi_thread_priority = NORMALPRIO + 10;
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class ChannelDecimator {
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public:
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enum class DecimationFactor {
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By4,
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By8,
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By16,
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By32,
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};
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ChannelDecimator(
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DecimationFactor f
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) : decimation_factor { f }
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{
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}
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void set_decimation_factor(const DecimationFactor f) {
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decimation_factor = f;
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}
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buffer_c16_t execute(buffer_c8_t buffer) {
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auto decimated = execute_decimation(buffer);
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return decimated;
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}
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private:
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std::array<complex16_t, 1024> work_baseband;
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const buffer_c16_t work_baseband_buffer {
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work_baseband.data(),
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work_baseband.size()
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};
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const buffer_s16_t work_audio_buffer {
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(int16_t*)work_baseband.data(),
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sizeof(work_baseband) / sizeof(int16_t)
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};
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//const bool fs_over_4_downconvert = true;
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dsp::decimate::TranslateByFSOver4AndDecimateBy2CIC3 translate;
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//dsp::decimate::DecimateBy2CIC3 cic_0;
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dsp::decimate::DecimateBy2CIC3 cic_1;
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dsp::decimate::DecimateBy2CIC3 cic_2;
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dsp::decimate::DecimateBy2CIC3 cic_3;
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dsp::decimate::DecimateBy2CIC3 cic_4;
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DecimationFactor decimation_factor { DecimationFactor::By32 };
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buffer_c16_t execute_decimation(buffer_c8_t buffer) {
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/* 3.072MHz complex<int8_t>[2048], [-128, 127]
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* -> Shift by -fs/4
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* -> 3rd order CIC: -0.1dB @ 0.028fs, -1dB @ 0.088fs, -60dB @ 0.468fs
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* -0.1dB @ 86kHz, -1dB @ 270kHz, -60dB @ 1.44MHz
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* -> gain of 256
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* -> decimation by 2
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* -> 1.544MHz complex<int16_t>[1024], [-32768, 32512] */
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const auto stage_0_out = translate.execute(buffer, work_baseband_buffer);
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//if( fs_over_4_downconvert ) {
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// // TODO:
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//} else {
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// Won't work until cic_0 will accept input type of buffer_c8_t.
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// stage_0_out = cic_0.execute(buffer, work_baseband_buffer);
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//}
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/* 1.536MHz complex<int16_t>[1024], [-32768, 32512]
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* -> 3rd order CIC: -0.1dB @ 0.028fs, -1dB @ 0.088fs, -60dB @ 0.468fs
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* -0.1dB @ 43kHz, -1dB @ 136kHz, -60dB @ 723kHz
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* -> gain of 8
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* -> decimation by 2
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* -> 768kHz complex<int16_t>[512], [-8192, 8128] */
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auto cic_1_out = cic_1.execute(stage_0_out, work_baseband_buffer);
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if( decimation_factor == DecimationFactor::By4 ) {
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return cic_1_out;
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}
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/* 768kHz complex<int16_t>[512], [-32768, 32512]
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* -> 3rd order CIC decimation by 2, gain of 1
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* -> 384kHz complex<int16_t>[256], [-32768, 32512] */
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auto cic_2_out = cic_2.execute(cic_1_out, work_baseband_buffer);
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if( decimation_factor == DecimationFactor::By8 ) {
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return cic_2_out;
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}
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/* 384kHz complex<int16_t>[256], [-32768, 32512]
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* -> 3rd order CIC decimation by 2, gain of 1
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* -> 192kHz complex<int16_t>[128], [-32768, 32512] */
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auto cic_3_out = cic_3.execute(cic_2_out, work_baseband_buffer);
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if( decimation_factor == DecimationFactor::By16 ) {
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return cic_3_out;
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}
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/* 192kHz complex<int16_t>[128], [-32768, 32512]
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* -> 3rd order CIC decimation by 2, gain of 1
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* -> 96kHz complex<int16_t>[64], [-32768, 32512] */
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auto cic_4_out = cic_4.execute(cic_3_out, work_baseband_buffer);
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return cic_4_out;
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}
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};
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static constexpr iir_biquad_config_t audio_hpf_config {
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{ 0.93346032f, -1.86687724f, 0.93346032f },
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{ 1.0f , -1.97730264f, 0.97773668f }
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};
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static constexpr iir_biquad_config_t non_audio_hpf_config {
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{ 0.51891061f, -0.95714180f, 0.51891061f },
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{ 1.0f , -0.79878302f, 0.43960231f }
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};
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class FMSquelch {
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public:
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bool execute(buffer_s16_t audio) {
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// TODO: No hard-coded array size.
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std::array<int16_t, N> squelch_energy_buffer;
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const buffer_s16_t squelch_energy {
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squelch_energy_buffer.data(),
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squelch_energy_buffer.size()
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};
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non_audio_hpf.execute(audio, squelch_energy);
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uint64_t max_squared = 0;
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for(const auto sample : squelch_energy_buffer) {
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const uint64_t sample_squared = sample * sample;
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if( sample_squared > max_squared ) {
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max_squared = sample_squared;
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}
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}
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return (max_squared < (threshold * threshold));
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}
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private:
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static constexpr size_t N = 32;
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static constexpr int16_t threshold = 3072;
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// nyquist = 48000 / 2.0
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// scipy.signal.iirdesign(wp=8000 / nyquist, ws= 4000 / nyquist, gpass=1, gstop=18, ftype='ellip')
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IIRBiquadFilter non_audio_hpf { non_audio_hpf_config };
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};
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static volatile bool channel_spectrum_request_update { false };
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static std::array<complex16_t, 256> channel_spectrum;
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static uint32_t channel_spectrum_sampling_rate { 0 };
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static uint32_t channel_filter_pass_frequency { 0 };
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static uint32_t channel_filter_stop_frequency { 0 };
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class BasebandProcessor {
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public:
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virtual ~BasebandProcessor() = default;
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virtual void execute(buffer_c8_t buffer) = 0;
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protected:
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void feed_channel_stats(const buffer_c16_t channel) {
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channel_stats.feed(
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channel,
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[this](const ChannelStatistics statistics) {
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this->post_channel_stats_message(statistics);
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}
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);
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}
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void feed_channel_spectrum(
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const buffer_c16_t channel,
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const uint32_t filter_pass_frequency,
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const uint32_t filter_stop_frequency
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) {
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channel_filter_pass_frequency = filter_pass_frequency;
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channel_filter_stop_frequency = filter_stop_frequency;
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channel_spectrum_decimator.feed(
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channel,
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[this](const buffer_c16_t data) {
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this->post_channel_spectrum_message(data);
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}
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);
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}
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void fill_audio_buffer(const buffer_s16_t audio) {
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auto audio_buffer = audio::dma::tx_empty_buffer();
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for(size_t i=0; i<audio_buffer.count; i++) {
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audio_buffer.p[i].left = audio_buffer.p[i].right = audio.p[i];
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}
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i2s::i2s0::tx_unmute();
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feed_audio_stats(audio);
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}
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private:
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BlockDecimator<256> channel_spectrum_decimator { 4 };
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ChannelStatsCollector channel_stats;
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ChannelStatisticsMessage channel_stats_message;
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AudioStatsCollector audio_stats;
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AudioStatisticsMessage audio_stats_message;
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void post_channel_stats_message(const ChannelStatistics statistics) {
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if( channel_stats_message.is_free() ) {
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channel_stats_message.statistics = statistics;
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shared_memory.application_queue.push(&channel_stats_message);
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}
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}
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void post_channel_spectrum_message(const buffer_c16_t data) {
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if( !channel_spectrum_request_update ) {
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channel_spectrum_request_update = true;
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std::copy(&data.p[0], &data.p[data.count], channel_spectrum.begin());
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channel_spectrum_sampling_rate = data.sampling_rate;
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events_flag(EVT_MASK_SPECTRUM);
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}
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}
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void feed_audio_stats(const buffer_s16_t audio) {
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audio_stats.feed(
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audio,
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[this](const AudioStatistics statistics) {
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this->post_audio_stats_message(statistics);
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}
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);
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}
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void post_audio_stats_message(const AudioStatistics statistics) {
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if( audio_stats_message.is_free() ) {
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audio_stats_message.statistics = statistics;
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shared_memory.application_queue.push(&audio_stats_message);
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}
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}
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};
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class NarrowbandAMAudio : public BasebandProcessor {
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public:
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void execute(buffer_c8_t buffer) override {
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auto decimator_out = decimator.execute(buffer);
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const buffer_c16_t work_baseband_buffer {
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(complex16_t*)decimator_out.p,
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sizeof(*decimator_out.p) * decimator_out.count
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};
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/* 96kHz complex<int16_t>[64]
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* -> FIR filter, <?kHz (0.???fs) pass, gain 1.0
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* -> 48kHz int16_t[32] */
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auto channel = channel_filter.execute(decimator_out, work_baseband_buffer);
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// TODO: Feed channel_stats post-decimation data?
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feed_channel_stats(channel);
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feed_channel_spectrum(
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channel,
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decimator_out.sampling_rate * channel_filter_taps.pass_frequency_normalized,
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decimator_out.sampling_rate * channel_filter_taps.stop_frequency_normalized
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);
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const buffer_s16_t work_audio_buffer {
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(int16_t*)decimator_out.p,
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sizeof(*decimator_out.p) * decimator_out.count
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};
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/* 48kHz complex<int16_t>[32]
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* -> AM demodulation
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* -> 48kHz int16_t[32] */
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auto audio = demod.execute(channel, work_audio_buffer);
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audio_hpf.execute_in_place(audio);
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fill_audio_buffer(audio);
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}
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private:
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ChannelDecimator decimator { ChannelDecimator::DecimationFactor::By32 };
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const fir_taps_real<64>& channel_filter_taps = taps_64_lp_031_070_tfilter;
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dsp::decimate::FIRAndDecimateBy2Complex<64> channel_filter { channel_filter_taps.taps };
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dsp::demodulate::AM demod;
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IIRBiquadFilter audio_hpf { audio_hpf_config };
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};
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class NarrowbandFMAudio : public BasebandProcessor {
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public:
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void execute(buffer_c8_t buffer) override {
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/* Called every 2048/3072000 second -- 1500Hz. */
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auto decimator_out = decimator.execute(buffer);
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const buffer_c16_t work_baseband_buffer {
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(complex16_t*)decimator_out.p,
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sizeof(*decimator_out.p) * decimator_out.count
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};
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/* 96kHz complex<int16_t>[64]
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* -> FIR filter, <6kHz (0.063fs) pass, gain 1.0
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* -> 48kHz int16_t[32] */
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auto channel = channel_filter.execute(decimator_out, work_baseband_buffer);
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// TODO: Feed channel_stats post-decimation data?
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feed_channel_stats(channel);
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feed_channel_spectrum(
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channel,
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decimator_out.sampling_rate * channel_filter_taps.pass_frequency_normalized,
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decimator_out.sampling_rate * channel_filter_taps.stop_frequency_normalized
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);
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const buffer_s16_t work_audio_buffer {
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(int16_t*)decimator_out.p,
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sizeof(*decimator_out.p) * decimator_out.count
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};
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/* 48kHz complex<int16_t>[32]
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* -> FM demodulation
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* -> 48kHz int16_t[32] */
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auto audio = demod.execute(channel, work_audio_buffer);
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static uint64_t audio_present_history = 0;
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const auto audio_present_now = squelch.execute(audio);
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audio_present_history = (audio_present_history << 1) | (audio_present_now ? 1 : 0);
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const bool audio_present = (audio_present_history != 0);
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if( !audio_present ) {
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// Zero audio buffer.
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for(size_t i=0; i<audio.count; i++) {
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audio.p[i] = 0;
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}
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}
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audio_hpf.execute_in_place(audio);
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fill_audio_buffer(audio);
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}
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private:
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ChannelDecimator decimator { ChannelDecimator::DecimationFactor::By32 };
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const fir_taps_real<64>& channel_filter_taps = taps_64_lp_042_078_tfilter;
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dsp::decimate::FIRAndDecimateBy2Complex<64> channel_filter { channel_filter_taps.taps };
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dsp::demodulate::FM demod { 48000, 7500 };
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IIRBiquadFilter audio_hpf { audio_hpf_config };
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FMSquelch squelch;
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};
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class WidebandFMAudio : public BasebandProcessor {
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public:
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void execute(buffer_c8_t buffer) override {
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auto decimator_out = decimator.execute(buffer);
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const buffer_s16_t work_audio_buffer {
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(int16_t*)decimator_out.p,
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sizeof(*decimator_out.p) * decimator_out.count
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};
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auto channel = decimator_out;
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// TODO: Feed channel_stats post-decimation data?
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feed_channel_stats(channel);
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//feed_channel_spectrum(channel);
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/* 768kHz complex<int16_t>[512]
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* -> FM demodulation
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* -> 768kHz int16_t[512] */
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/* TODO: To improve adjacent channel rejection, implement complex channel filter:
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* pass < +/- 100kHz, stop > +/- 200kHz
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*/
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auto audio_oversampled = demod.execute(decimator_out, work_audio_buffer);
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/* 768kHz int16_t[512]
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* -> 4th order CIC decimation by 2, gain of 1
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* -> 384kHz int16_t[256] */
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auto audio_8fs = audio_dec_1.execute(audio_oversampled, work_audio_buffer);
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/* 384kHz int16_t[256]
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* -> 4th order CIC decimation by 2, gain of 1
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* -> 192kHz int16_t[128] */
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auto audio_4fs = audio_dec_2.execute(audio_8fs, work_audio_buffer);
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/* 192kHz int16_t[128]
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* -> 4th order CIC decimation by 2, gain of 1
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* -> 96kHz int16_t[64] */
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auto audio_2fs = audio_dec_3.execute(audio_4fs, work_audio_buffer);
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/* 96kHz int16_t[64]
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* -> FIR filter, <15kHz (0.156fs) pass, >19kHz (0.198fs) stop, gain of 1
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* -> 48kHz int16_t[32] */
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auto audio = audio_filter.execute(audio_2fs, work_audio_buffer);
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/* -> 48kHz int16_t[32] */
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audio_hpf.execute_in_place(audio);
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fill_audio_buffer(audio);
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}
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private:
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ChannelDecimator decimator { ChannelDecimator::DecimationFactor::By4 };
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//dsp::decimate::FIRAndDecimateBy2Complex<64> channel_filter { taps_64_lp_031_070_tfilter };
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dsp::demodulate::FM demod { 768000, 75000 };
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dsp::decimate::DecimateBy2CIC4Real audio_dec_1;
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dsp::decimate::DecimateBy2CIC4Real audio_dec_2;
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dsp::decimate::DecimateBy2CIC4Real audio_dec_3;
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const fir_taps_real<64>& audio_filter_taps = taps_64_lp_156_198;
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dsp::decimate::FIR64AndDecimateBy2Real audio_filter { audio_filter_taps.taps };
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|
|
IIRBiquadFilter audio_hpf { audio_hpf_config };
|
|
};
|
|
|
|
class FSKProcessor : public BasebandProcessor {
|
|
public:
|
|
FSKProcessor(
|
|
MessageHandlerMap& message_handlers
|
|
) : message_handlers(message_handlers)
|
|
{
|
|
message_handlers[Message::ID::FSKConfiguration] = [this](const Message* const p) {
|
|
auto m = reinterpret_cast<const FSKConfigurationMessage*>(p);
|
|
this->configure(m->configuration);
|
|
};
|
|
}
|
|
|
|
~FSKProcessor() {
|
|
message_handlers[Message::ID::FSKConfiguration] = nullptr;
|
|
}
|
|
|
|
void configure(const FSKConfiguration new_configuration) {
|
|
clock_recovery.configure(new_configuration.symbol_rate, 76800);
|
|
access_code_correlator.configure(
|
|
new_configuration.access_code,
|
|
new_configuration.access_code_length,
|
|
new_configuration.access_code_tolerance
|
|
);
|
|
packet_builder.configure(new_configuration.packet_length);
|
|
}
|
|
|
|
void execute(buffer_c8_t buffer) override {
|
|
/* 2.4576MHz, 2048 samples */
|
|
|
|
auto decimator_out = decimator.execute(buffer);
|
|
|
|
/* 153.6kHz, 128 samples */
|
|
|
|
const buffer_c16_t work_baseband_buffer {
|
|
(complex16_t*)decimator_out.p,
|
|
decimator_out.count
|
|
};
|
|
|
|
/* 153.6kHz complex<int16_t>[128]
|
|
* -> FIR filter, <?kHz (?fs) pass, gain 1.0
|
|
* -> 76.8kHz int16_t[64] */
|
|
auto channel = channel_filter.execute(decimator_out, work_baseband_buffer);
|
|
|
|
/* 76.8kHz, 64 samples */
|
|
feed_channel_stats(channel);
|
|
feed_channel_spectrum(
|
|
channel,
|
|
decimator_out.sampling_rate * channel_filter_taps.pass_frequency_normalized,
|
|
decimator_out.sampling_rate * channel_filter_taps.stop_frequency_normalized
|
|
);
|
|
|
|
const auto symbol_handler_fn = [this](const float value) {
|
|
const uint_fast8_t symbol = (value >= 0.0f) ? 1 : 0;
|
|
const bool access_code_found = this->access_code_correlator.execute(symbol);
|
|
this->consume_symbol(symbol, access_code_found);
|
|
};
|
|
|
|
// 76.8k
|
|
|
|
const buffer_s16_t work_demod_buffer {
|
|
(int16_t*)decimator_out.p,
|
|
decimator_out.count * sizeof(*decimator_out.p) / sizeof(int16_t)
|
|
};
|
|
|
|
auto demodulated = demod.execute(channel, work_demod_buffer);
|
|
|
|
i2s::i2s0::tx_mute();
|
|
|
|
for(size_t i=0; i<demodulated.count; i++) {
|
|
clock_recovery.execute(demodulated.p[i], symbol_handler_fn);
|
|
}
|
|
}
|
|
|
|
private:
|
|
ChannelDecimator decimator { ChannelDecimator::DecimationFactor::By16 };
|
|
const fir_taps_real<64>& channel_filter_taps = taps_64_lp_031_070_tfilter;
|
|
dsp::decimate::FIRAndDecimateBy2Complex<64> channel_filter { channel_filter_taps.taps };
|
|
dsp::demodulate::FM demod { 76800, 9600 * 2 };
|
|
|
|
ClockRecovery clock_recovery;
|
|
AccessCodeCorrelator access_code_correlator;
|
|
PacketBuilder packet_builder;
|
|
|
|
FSKPacketMessage message;
|
|
MessageHandlerMap& message_handlers;
|
|
|
|
void consume_symbol(
|
|
const uint_fast8_t symbol,
|
|
const bool access_code_found
|
|
) {
|
|
const auto payload_handler_fn = [this](
|
|
const std::bitset<256>& payload,
|
|
const size_t bits_received
|
|
) {
|
|
this->payload_handler(payload, bits_received);
|
|
};
|
|
|
|
packet_builder.execute(
|
|
symbol,
|
|
access_code_found,
|
|
payload_handler_fn
|
|
);
|
|
}
|
|
|
|
void payload_handler(
|
|
const std::bitset<256>& payload,
|
|
const size_t bits_received
|
|
) {
|
|
if( message.is_free() ) {
|
|
message.packet.payload = payload;
|
|
message.packet.bits_received = bits_received;
|
|
shared_memory.application_queue.push(&message);
|
|
}
|
|
}
|
|
};
|
|
|
|
static const int8_t sintab[1024] = {
|
|
0, 1, 2, 2, 3, 4, 5, 5, 6, 7, 8, 9, 9, 10, 11, 12, 12, 13, 14, 15, 16, 16, 17, 18, 19, 19, 20, 21, 22, 22, 23, 24, 25, 26, 26, 27, 28, 29, 29, 30, 31, 32, 32, 33, 34, 35, 35, 36, 37, 38, 38, 39, 40, 41, 41, 42, 43, 44, 44, 45, 46, 46, 47, 48, 49, 49, 50, 51, 51, 52, 53, 54, 54, 55, 56, 56, 57, 58, 58, 59, 60, 61, 61, 62, 63, 63, 64, 65, 65, 66, 67, 67, 68, 69, 69, 70, 71, 71, 72, 72, 73, 74, 74, 75, 76, 76, 77, 78, 78, 79, 79, 80, 81, 81, 82, 82, 83, 84, 84, 85, 85, 86, 86, 87, 88, 88, 89, 89, 90, 90, 91, 91, 92, 93, 93, 94, 94, 95, 95, 96, 96, 97, 97, 98, 98, 99, 99, 100, 100, 101, 101, 102, 102, 102, 103, 103, 104, 104, 105, 105, 106, 106, 106, 107, 107, 108, 108, 109, 109, 109, 110, 110, 111, 111, 111, 112, 112, 112, 113, 113, 113, 114, 114, 114, 115, 115, 115, 116, 116, 116, 117, 117, 117, 118, 118, 118, 118, 119, 119, 119, 120, 120, 120, 120, 121, 121, 121, 121, 122, 122, 122, 122, 122, 123, 123, 123, 123, 123, 124, 124, 124, 124, 124, 124, 125, 125, 125, 125, 125, 125, 125, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127,
|
|
127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 127, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 125, 125, 125, 125, 125, 125, 125, 124, 124, 124, 124, 124, 124, 123, 123, 123, 123, 123, 122, 122, 122, 122, 122, 121, 121, 121, 121, 120, 120, 120, 120, 119, 119, 119, 118, 118, 118, 118, 117, 117, 117, 116, 116, 116, 115, 115, 115, 114, 114, 114, 113, 113, 113, 112, 112, 112, 111, 111, 111, 110, 110, 109, 109, 109, 108, 108, 107, 107, 106, 106, 106, 105, 105, 104, 104, 103, 103, 102, 102, 102, 101, 101, 100, 100, 99, 99, 98, 98, 97, 97, 96, 96, 95, 95, 94, 94, 93, 93, 92, 91, 91, 90, 90, 89, 89, 88, 88, 87, 86, 86, 85, 85, 84, 84, 83, 82, 82, 81, 81, 80, 79, 79, 78, 78, 77, 76, 76, 75, 74, 74, 73, 72, 72, 71, 71, 70, 69, 69, 68, 67, 67, 66, 65, 65, 64, 63, 63, 62, 61, 61, 60, 59, 58, 58, 57, 56, 56, 55, 54, 54, 53, 52, 51, 51, 50, 49, 49, 48, 47, 46, 46, 45, 44, 44, 43, 42, 41, 41, 40, 39, 38, 38, 37, 36, 35, 35, 34, 33, 32, 32, 31, 30, 29, 29, 28, 27, 26, 26, 25, 24, 23, 22, 22, 21, 20, 19, 19, 18, 17, 16, 16, 15, 14, 13, 12, 12, 11, 10, 9, 9, 8, 7, 6, 5, 5, 4, 3, 2, 2, 1, 0, -1, -2, -2, -3, -4, -5, -5, -6, -7, -8, -9, -9, -10, -11, -12, -12, -13, -14, -15, -16, -16, -17, -18, -19, -19, -20, -21, -22, -22, -23, -24, -25, -26, -26, -27, -28, -29, -29, -30, -31,
|
|
-32, -32, -33, -34, -35, -35, -36, -37, -38, -38, -39, -40, -41, -41, -42, -43, -44, -44, -45, -46, -46, -47, -48, -49, -49, -50, -51, -51, -52, -53, -54, -54, -55, -56, -56, -57, -58, -58, -59, -60, -61, -61, -62, -63, -63, -64, -65, -65, -66, -67, -67, -68, -69, -69, -70, -71, -71, -72, -72, -73, -74, -74, -75, -76, -76, -77, -78, -78, -79, -79, -80, -81, -81, -82, -82, -83, -84, -84, -85, -85, -86, -86, -87, -88, -88, -89, -89, -90, -90, -91, -91, -92, -93, -93, -94, -94, -95, -95, -96, -96, -97, -97, -98, -98, -99, -99, -100, -100, -101, -101, -102, -102, -102, -103, -103, -104, -104, -105, -105, -106, -106, -106, -107, -107, -108, -108, -109, -109, -109, -110, -110, -111, -111, -111, -112, -112, -112, -113, -113, -113, -114, -114, -114, -115, -115, -115, -116, -116, -116, -117, -117, -117, -118, -118, -118, -118, -119, -119, -119, -120, -120, -120, -120, -121, -121, -121, -121, -122, -122, -122, -122, -122, -123, -123, -123, -123, -123, -124, -124, -124, -124, -124, -124, -125, -125, -125, -125, -125, -125, -125, -126, -126, -126, -126, -126, -126, -126, -126, -126, -126, -126, -127, -127, -127, -127, -127, -127, -127, -127, -127, -127, -127, -127, -127, -127, -127, -127, -127, -127, -127, -127, -127, -127, -127, -127, -127, -127, -127, -127, -127,
|
|
-126, -126, -126, -126, -126, -126, -126, -126, -126, -126, -126, -125, -125, -125, -125, -125, -125, -125, -124, -124, -124, -124, -124, -124, -123, -123, -123, -123, -123, -122, -122, -122, -122, -122, -121, -121, -121, -121, -120, -120, -120, -120, -119, -119, -119, -118, -118, -118, -118, -117, -117, -117, -116, -116, -116, -115, -115, -115, -114, -114, -114, -113, -113, -113, -112, -112, -112, -111, -111, -111, -110, -110, -109, -109, -109, -108, -108, -107, -107, -106, -106, -106, -105, -105, -104, -104, -103, -103, -102, -102, -102, -101, -101, -100, -100, -99, -99, -98, -98, -97, -97, -96, -96, -95, -95, -94, -94, -93, -93, -92, -91, -91, -90, -90, -89, -89, -88, -88, -87, -86, -86, -85, -85, -84, -84, -83, -82, -82, -81, -81, -80, -79, -79, -78, -78, -77, -76, -76, -75, -74, -74, -73, -72, -72, -71, -71, -70, -69, -69, -68, -67, -67, -66, -65, -65, -64, -63, -63, -62, -61, -61, -60, -59, -58, -58, -57, -56, -56, -55, -54, -54, -53, -52, -51, -51, -50, -49, -49, -48, -47, -46, -46, -45, -44, -44, -43, -42, -41, -41, -40, -39, -38, -38, -37, -36, -35, -35, -34, -33, -32, -32, -31, -30, -29, -29, -28, -27, -26, -26, -25, -24, -23, -22, -22, -21, -20, -19, -19, -18, -17, -16, -16, -15, -14, -13, -12, -12, -11, -10, -9, -9, -8, -7, -6, -5, -5, -4, -3, -2, -2, -1
|
|
};
|
|
|
|
#define SAMPLES_PER_BIT 192
|
|
#define FILTER_SIZE 576
|
|
#define SAMPLE_BUFFER_SIZE SAMPLES_PER_BIT + FILTER_SIZE
|
|
|
|
static int32_t waveform_biphase[] = {
|
|
165,167,168,168,167,166,163,160,
|
|
157,152,147,141,134,126,118,109,
|
|
99,88,77,66,53,41,27,14,
|
|
0,-14,-29,-44,-59,-74,-89,-105,
|
|
-120,-135,-150,-165,-179,-193,-206,-218,
|
|
-231,-242,-252,-262,-271,-279,-286,-291,
|
|
-296,-299,-301,-302,-302,-300,-297,-292,
|
|
-286,-278,-269,-259,-247,-233,-219,-202,
|
|
-185,-166,-145,-124,-101,-77,-52,-26,
|
|
0,27,56,85,114,144,175,205,
|
|
236,266,296,326,356,384,412,439,
|
|
465,490,513,535,555,574,590,604,
|
|
616,626,633,637,639,638,633,626,
|
|
616,602,586,565,542,515,485,451,
|
|
414,373,329,282,232,178,121,62,
|
|
0,-65,-132,-202,-274,-347,-423,-500,
|
|
-578,-656,-736,-815,-894,-973,-1051,-1128,
|
|
-1203,-1276,-1347,-1415,-1479,-1540,-1596,-1648,
|
|
-1695,-1736,-1771,-1799,-1820,-1833,-1838,-1835,
|
|
-1822,-1800,-1767,-1724,-1670,-1605,-1527,-1437,
|
|
-1334,-1217,-1087,-943,-785,-611,-423,-219,
|
|
0,235,487,755,1040,1341,1659,1994,
|
|
2346,2715,3101,3504,3923,4359,4811,5280,
|
|
5764,6264,6780,7310,7856,8415,8987,9573,
|
|
10172,10782,11404,12036,12678,13329,13989,14656,
|
|
15330,16009,16694,17382,18074,18767,19461,20155,
|
|
20848,21539,22226,22909,23586,24256,24918,25571,
|
|
26214,26845,27464,28068,28658,29231,29787,30325,
|
|
30842,31339,31814,32266,32694,33097,33473,33823,
|
|
34144,34437,34699,34931,35131,35299,35434,35535,
|
|
35602,35634,35630,35591,35515,35402,35252,35065,
|
|
34841,34579,34279,33941,33566,33153,32702,32214,
|
|
31689,31128,30530,29897,29228,28525,27788,27017,
|
|
26214,25379,24513,23617,22693,21740,20761,19755,
|
|
18725,17672,16597,15501,14385,13251,12101,10935,
|
|
9755,8563,7360,6148,4927,3701,2470,1235,
|
|
0,-1235,-2470,-3701,-4927,-6148,-7360,-8563,
|
|
-9755,-10935,-12101,-13251,-14385,-15501,-16597,-17672,
|
|
-18725,-19755,-20761,-21740,-22693,-23617,-24513,-25379,
|
|
-26214,-27017,-27788,-28525,-29228,-29897,-30530,-31128,
|
|
-31689,-32214,-32702,-33153,-33566,-33941,-34279,-34579,
|
|
-34841,-35065,-35252,-35402,-35515,-35591,-35630,-35634,
|
|
-35602,-35535,-35434,-35299,-35131,-34931,-34699,-34437,
|
|
-34144,-33823,-33473,-33097,-32694,-32266,-31814,-31339,
|
|
-30842,-30325,-29787,-29231,-28658,-28068,-27464,-26845,
|
|
-26214,-25571,-24918,-24256,-23586,-22909,-22226,-21539,
|
|
-20848,-20155,-19461,-18767,-18074,-17382,-16694,-16009,
|
|
-15330,-14656,-13989,-13329,-12678,-12036,-11404,-10782,
|
|
-10172,-9573,-8987,-8415,-7856,-7310,-6780,-6264,
|
|
-5764,-5280,-4811,-4359,-3923,-3504,-3101,-2715,
|
|
-2346,-1994,-1659,-1341,-1040,-755,-487,-235,
|
|
0,219,423,611,785,943,1087,1217,
|
|
1334,1437,1527,1605,1670,1724,1767,1800,
|
|
1822,1835,1838,1833,1820,1799,1771,1736,
|
|
1695,1648,1596,1540,1479,1415,1347,1276,
|
|
1203,1128,1051,973,894,815,736,656,
|
|
578,500,423,347,274,202,132,65,
|
|
0,-62,-121,-178,-232,-282,-329,-373,
|
|
-414,-451,-485,-515,-542,-565,-586,-602,
|
|
-616,-626,-633,-638,-639,-637,-633,-626,
|
|
-616,-604,-590,-574,-555,-535,-513,-490,
|
|
-465,-439,-412,-384,-356,-326,-296,-266,
|
|
-236,-205,-175,-144,-114,-85,-56,-27,
|
|
0,26,52,77,101,124,145,166,
|
|
185,202,219,233,247,259,269,278,
|
|
286,292,297,300,302,302,301,299,
|
|
296,291,286,279,271,262,252,242,
|
|
231,218,206,193,179,165,150,135,
|
|
120,105,89,74,59,44,29,14,
|
|
0,-14,-27,-41,-53,-66,-77,-88,
|
|
-99,-109,-118,-126,-134,-141,-147,-152,
|
|
-157,-160,-163,-166,-167,-168,-168,-167
|
|
};
|
|
|
|
/*
|
|
class RDSProcessor : public BasebandProcessor {
|
|
public:
|
|
void execute(buffer_c8_t buffer) override {
|
|
|
|
for (size_t i = 0; i<buffer.count; i++) {
|
|
|
|
//Sample generation 2.28M/10=228kHz
|
|
if(s >= 9) {
|
|
s = 0;
|
|
if(sample_count >= SAMPLES_PER_BIT) {
|
|
cur_bit = (shared_memory.rdsdata[(bit_pos / 26) & 15]>>(25-(bit_pos % 26))) & 1;
|
|
prev_output = cur_output;
|
|
cur_output = prev_output ^ cur_bit;
|
|
|
|
int32_t *src = waveform_biphase;
|
|
int idx = in_sample_index;
|
|
|
|
for(int j=0; j<FILTER_SIZE; j++) {
|
|
val = (*src++);
|
|
if (cur_output) val = -val;
|
|
sample_buffer[idx++] += val;
|
|
if (idx >= SAMPLE_BUFFER_SIZE) idx = 0;
|
|
}
|
|
|
|
in_sample_index += SAMPLES_PER_BIT;
|
|
if (in_sample_index >= SAMPLE_BUFFER_SIZE) in_sample_index -= SAMPLE_BUFFER_SIZE;
|
|
|
|
bit_pos++;
|
|
sample_count = 0;
|
|
}
|
|
|
|
sample = sample_buffer[out_sample_index];
|
|
sample_buffer[out_sample_index] = 0;
|
|
out_sample_index++;
|
|
if (out_sample_index >= SAMPLE_BUFFER_SIZE) out_sample_index = 0;
|
|
|
|
//AM @ 228k/4=57kHz
|
|
switch (mphase) {
|
|
case 0:
|
|
case 2: sample = 0; break;
|
|
case 1: break;
|
|
case 3: sample = -sample; break;
|
|
}
|
|
mphase++;
|
|
if (mphase >= 4) mphase = 0;
|
|
|
|
sample_count++;
|
|
} else {
|
|
s++;
|
|
}
|
|
|
|
//FM
|
|
frq = (sample>>16) * 386760;
|
|
|
|
phase = (phase + frq);
|
|
sphase = phase + (256<<16);
|
|
|
|
re = sintab[(sphase & 0x03FF0000)>>16];
|
|
im = sintab[(phase & 0x03FF0000)>>16];
|
|
|
|
buffer.p[i] = {(int8_t)re,(int8_t)im};
|
|
}
|
|
}
|
|
|
|
private:
|
|
int8_t re, im;
|
|
uint8_t mphase, s;
|
|
uint32_t bit_pos;
|
|
int32_t sample_buffer[SAMPLE_BUFFER_SIZE] = {0};
|
|
int32_t val;
|
|
uint8_t prev_output = 0;
|
|
uint8_t cur_output = 0;
|
|
uint8_t cur_bit = 0;
|
|
int sample_count = SAMPLES_PER_BIT;
|
|
int in_sample_index = 0;
|
|
int32_t sample;
|
|
int out_sample_index = SAMPLE_BUFFER_SIZE-1;
|
|
uint32_t phase, sphase;
|
|
int32_t sig, frq, frq_im, rdsc;
|
|
int32_t k;
|
|
};*/
|
|
|
|
class LCRFSKProcessor : public BasebandProcessor {
|
|
public:
|
|
void execute(buffer_c8_t buffer) override {
|
|
|
|
for (size_t i = 0; i<buffer.count; i++) {
|
|
|
|
//Sample generation 2.28M/10 = 228kHz
|
|
if (s >= 9) {
|
|
s = 0;
|
|
|
|
if (sample_count >= shared_memory.afsk_samples_per_bit) {
|
|
if (shared_memory.afsk_transmit_done == false)
|
|
cur_byte = shared_memory.lcrdata[byte_pos];
|
|
if (!cur_byte) {
|
|
if (shared_memory.afsk_repeat) {
|
|
shared_memory.afsk_repeat--;
|
|
bit_pos = 0;
|
|
byte_pos = 0;
|
|
cur_byte = shared_memory.lcrdata[0];
|
|
if( message.is_free() ) {
|
|
message.n = shared_memory.afsk_repeat;
|
|
shared_memory.application_queue.push(&message);
|
|
}
|
|
} else {
|
|
if( message.is_free() ) {
|
|
message.n = 0;
|
|
shared_memory.afsk_transmit_done = true;
|
|
shared_memory.application_queue.push(&message);
|
|
}
|
|
cur_byte = 0;
|
|
}
|
|
}
|
|
|
|
gbyte = 0;
|
|
gbyte = cur_byte << 1;
|
|
gbyte |= 1;
|
|
|
|
cur_bit = (gbyte >> (9-bit_pos)) & 1;
|
|
|
|
if (bit_pos == 9) {
|
|
bit_pos = 0;
|
|
byte_pos++;
|
|
} else {
|
|
bit_pos++;
|
|
}
|
|
|
|
//aphase = 0x2FFFFFF;
|
|
|
|
sample_count = 0;
|
|
} else {
|
|
sample_count++;
|
|
}
|
|
if (cur_bit)
|
|
aphase += shared_memory.afsk_phase_inc_mark; //(353205)
|
|
else
|
|
aphase += shared_memory.afsk_phase_inc_space; //(647542)
|
|
|
|
sample = sintab[(aphase & 0x03FF0000)>>16];
|
|
} else {
|
|
s++;
|
|
}
|
|
|
|
sample = sintab[(aphase & 0x03FF0000)>>16];
|
|
|
|
//FM
|
|
frq = sample * 500;
|
|
|
|
phase = (phase + frq);
|
|
sphase = phase + (256<<16);
|
|
|
|
re = sintab[(sphase & 0x03FF0000)>>16];
|
|
im = sintab[(phase & 0x03FF0000)>>16];
|
|
|
|
buffer.p[i] = {(int8_t)re,(int8_t)im};
|
|
}
|
|
}
|
|
|
|
private:
|
|
int8_t re, im;
|
|
uint8_t s;
|
|
uint8_t bit_pos, byte_pos = 0;
|
|
char cur_byte = 0;
|
|
uint16_t gbyte;
|
|
uint8_t cur_bit = 0;
|
|
uint32_t sample_count;
|
|
uint32_t aphase, phase, sphase;
|
|
int32_t sample, sig, frq;
|
|
TXDoneMessage message;
|
|
};
|
|
|
|
class ToneProcessor : public BasebandProcessor {
|
|
public:
|
|
void execute(buffer_c8_t buffer) override {
|
|
|
|
for (size_t i = 0; i<buffer.count; i++) {
|
|
|
|
//Sample generation 2.28M/10 = 228kHz
|
|
if (s >= 9) {
|
|
s = 0;
|
|
aphase += 353205; // DEBUG
|
|
sample = sintab[(aphase & 0x03FF0000)>>16];
|
|
} else {
|
|
s++;
|
|
}
|
|
|
|
sample = sintab[(aphase & 0x03FF0000)>>16];
|
|
|
|
//FM
|
|
frq = sample * 500; // DEBUG
|
|
|
|
phase = (phase + frq);
|
|
sphase = phase + (256<<16);
|
|
|
|
re = sintab[(sphase & 0x03FF0000)>>16];
|
|
im = sintab[(phase & 0x03FF0000)>>16];
|
|
|
|
buffer.p[i] = {(int8_t)re,(int8_t)im};
|
|
}
|
|
}
|
|
|
|
private:
|
|
int8_t re, im;
|
|
uint8_t s;
|
|
uint32_t sample_count;
|
|
uint32_t aphase, phase, sphase;
|
|
int32_t sample, sig, frq;
|
|
};
|
|
|
|
static BasebandProcessor* baseband_processor { nullptr };
|
|
static BasebandConfiguration baseband_configuration;
|
|
|
|
static baseband::Direction direction = baseband::Direction::Transmit;
|
|
|
|
static WORKING_AREA(baseband_thread_wa, 8192);
|
|
|
|
static __attribute__((noreturn)) msg_t baseband_fn(void *arg) {
|
|
(void)arg;
|
|
chRegSetThreadName("baseband");
|
|
|
|
BasebandStatsCollector stats;
|
|
BasebandStatisticsMessage message;
|
|
|
|
while(true) {
|
|
if (direction == baseband::Direction::Transmit) {
|
|
const auto buffer_tmp = baseband::dma::wait_for_tx_buffer();
|
|
|
|
const buffer_c8_t buffer {
|
|
buffer_tmp.p, buffer_tmp.count, baseband_configuration.sampling_rate
|
|
};
|
|
|
|
if( baseband_processor ) {
|
|
baseband_processor->execute(buffer);
|
|
}
|
|
|
|
stats.process(buffer,
|
|
[&message](const BasebandStatistics statistics) {
|
|
if( message.is_free() ) {
|
|
message.statistics = statistics;
|
|
shared_memory.application_queue.push(&message);
|
|
}
|
|
}
|
|
);
|
|
} else {
|
|
const auto buffer_tmp = baseband::dma::wait_for_rx_buffer();
|
|
|
|
const buffer_c8_t buffer {
|
|
buffer_tmp.p, buffer_tmp.count, baseband_configuration.sampling_rate
|
|
};
|
|
|
|
if( baseband_processor ) {
|
|
baseband_processor->execute(buffer);
|
|
}
|
|
|
|
stats.process(buffer,
|
|
[&message](const BasebandStatistics statistics) {
|
|
if( message.is_free() ) {
|
|
message.statistics = statistics;
|
|
shared_memory.application_queue.push(&message);
|
|
}
|
|
}
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
static WORKING_AREA(rssi_thread_wa, 128);
|
|
static __attribute__((noreturn)) msg_t rssi_fn(void *arg) {
|
|
(void)arg;
|
|
chRegSetThreadName("rssi");
|
|
|
|
RSSIStatisticsCollector stats;
|
|
RSSIStatisticsMessage message;
|
|
|
|
while(true) {
|
|
// TODO: Place correct sampling rate into buffer returned here:
|
|
const auto buffer_tmp = rf::rssi::dma::wait_for_buffer();
|
|
const rf::rssi::buffer_t buffer {
|
|
buffer_tmp.p, buffer_tmp.count, 400000
|
|
};
|
|
|
|
stats.process(
|
|
buffer,
|
|
[&message](const RSSIStatistics statistics) {
|
|
if( message.is_free() ) {
|
|
message.statistics = statistics;
|
|
shared_memory.application_queue.push(&message);
|
|
}
|
|
}
|
|
);
|
|
}
|
|
}
|
|
|
|
extern "C" {
|
|
|
|
void __late_init(void) {
|
|
/* After this call, scheduler, systick, heap, etc. are available. */
|
|
/* By doing chSysInit() here, it runs before C++ constructors, which may
|
|
* require the heap.
|
|
*/
|
|
chSysInit();
|
|
}
|
|
|
|
}
|
|
|
|
static void init() {
|
|
i2s::i2s0::configure(
|
|
audio::i2s0_config_tx,
|
|
audio::i2s0_config_rx,
|
|
audio::i2s0_config_dma
|
|
);
|
|
|
|
audio::dma::init();
|
|
audio::dma::configure();
|
|
audio::dma::enable();
|
|
|
|
i2s::i2s0::tx_start();
|
|
i2s::i2s0::rx_start();
|
|
|
|
LPC_CREG->DMAMUX = portapack::gpdma_mux;
|
|
gpdma::controller.enable();
|
|
nvicEnableVector(DMA_IRQn, CORTEX_PRIORITY_MASK(LPC_DMA_IRQ_PRIORITY));
|
|
|
|
baseband::dma::init();
|
|
|
|
rf::rssi::init();
|
|
touch::dma::init();
|
|
|
|
chThdCreateStatic(baseband_thread_wa, sizeof(baseband_thread_wa),
|
|
baseband_thread_priority, baseband_fn,
|
|
nullptr
|
|
);
|
|
|
|
chThdCreateStatic(rssi_thread_wa, sizeof(rssi_thread_wa),
|
|
rssi_thread_priority, rssi_fn,
|
|
nullptr
|
|
);
|
|
}
|
|
|
|
class EventDispatcher {
|
|
public:
|
|
MessageHandlerMap& message_handlers() {
|
|
return message_map;
|
|
}
|
|
|
|
eventmask_t wait() {
|
|
return chEvtWaitAny(ALL_EVENTS);
|
|
}
|
|
|
|
void dispatch(const eventmask_t events) {
|
|
if( events & EVT_MASK_BASEBAND ) {
|
|
handle_baseband_queue();
|
|
}
|
|
|
|
if( events & EVT_MASK_SPECTRUM ) {
|
|
handle_spectrum();
|
|
}
|
|
}
|
|
|
|
private:
|
|
MessageHandlerMap message_map;
|
|
|
|
ChannelSpectrumMessage spectrum_message;
|
|
std::array<uint8_t, 256> spectrum_db;
|
|
|
|
void handle_baseband_queue() {
|
|
while( !shared_memory.baseband_queue.is_empty() ) {
|
|
auto message = shared_memory.baseband_queue.pop();
|
|
|
|
auto& fn = message_map[message->id];
|
|
if( fn ) {
|
|
fn(message);
|
|
}
|
|
|
|
message->state = Message::State::Free;
|
|
}
|
|
}
|
|
|
|
void handle_spectrum() {
|
|
if( channel_spectrum_request_update ) {
|
|
/* Decimated buffer is full. Compute spectrum. */
|
|
std::array<std::complex<float>, 256> samples_swapped;
|
|
fft_swap(channel_spectrum, samples_swapped);
|
|
channel_spectrum_request_update = false;
|
|
fft_c_preswapped(samples_swapped);
|
|
if( spectrum_message.is_free() ) {
|
|
for(size_t i=0; i<spectrum_db.size(); i++) {
|
|
const auto mag2 = magnitude_squared(samples_swapped[i]);
|
|
const float db = complex16_mag_squared_to_dbv_norm(mag2);
|
|
constexpr float mag_scale = 5.0f;
|
|
const unsigned int v = (db * mag_scale) + 255.0f;
|
|
spectrum_db[i] = std::max(0U, std::min(255U, v));
|
|
}
|
|
|
|
/* TODO: Rename .db -> .magnitude, or something more (less!) accurate. */
|
|
spectrum_message.spectrum.db = &spectrum_db;
|
|
spectrum_message.spectrum.db_count = spectrum_db.size();
|
|
spectrum_message.spectrum.sampling_rate = channel_spectrum_sampling_rate;
|
|
spectrum_message.spectrum.channel_filter_pass_frequency = channel_filter_pass_frequency;
|
|
spectrum_message.spectrum.channel_filter_stop_frequency = channel_filter_stop_frequency;
|
|
shared_memory.application_queue.push(&spectrum_message);
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
static void m0apptxevent_interrupt_enable() {
|
|
nvicEnableVector(M0CORE_IRQn, CORTEX_PRIORITY_MASK(LPC43XX_M0APPTXEVENT_IRQ_PRIORITY));
|
|
}
|
|
|
|
extern "C" {
|
|
|
|
CH_IRQ_HANDLER(MAPP_IRQHandler) {
|
|
CH_IRQ_PROLOGUE();
|
|
|
|
chSysLockFromIsr();
|
|
events_flag_isr(EVT_MASK_BASEBAND);
|
|
chSysUnlockFromIsr();
|
|
|
|
creg::m0apptxevent::clear();
|
|
|
|
CH_IRQ_EPILOGUE();
|
|
}
|
|
|
|
}
|
|
|
|
std::array<baseband::sample_t, 8192> baseband_buffer;
|
|
|
|
int main(void) {
|
|
init();
|
|
|
|
events_initialize(chThdSelf());
|
|
m0apptxevent_interrupt_enable();
|
|
|
|
EventDispatcher event_dispatcher;
|
|
auto& message_handlers = event_dispatcher.message_handlers();
|
|
|
|
//const auto baseband_buffer = new std::array<baseband::sample_t, 8192>();
|
|
|
|
message_handlers[Message::ID::BasebandConfiguration] = [&message_handlers](const Message* const p) {
|
|
auto message = reinterpret_cast<const BasebandConfigurationMessage*>(p);
|
|
if( message->configuration.mode != baseband_configuration.mode ) {
|
|
|
|
// TODO: Timing problem around disabling DMA and nulling and deleting old processor
|
|
auto old_p = baseband_processor;
|
|
baseband_processor = nullptr;
|
|
delete old_p;
|
|
|
|
switch(message->configuration.mode) {
|
|
case 1:
|
|
direction = baseband::Direction::Receive;
|
|
baseband_processor = new NarrowbandAMAudio();
|
|
break;
|
|
|
|
case 2:
|
|
direction = baseband::Direction::Receive;
|
|
baseband_processor = new NarrowbandFMAudio();
|
|
break;
|
|
|
|
case 3:
|
|
direction = baseband::Direction::Receive;
|
|
baseband_processor = new WidebandFMAudio();
|
|
break;
|
|
|
|
case 4:
|
|
direction = baseband::Direction::Receive;
|
|
baseband_processor = new FSKProcessor(message_handlers);
|
|
break;
|
|
|
|
/*case 15:
|
|
direction = baseband::Direction::Transmit;
|
|
baseband_processor = new RDSProcessor();
|
|
break;*/
|
|
|
|
case 16:
|
|
direction = baseband::Direction::Transmit;
|
|
baseband_processor = new LCRFSKProcessor();
|
|
break;
|
|
|
|
case 17:
|
|
direction = baseband::Direction::Transmit;
|
|
baseband_processor = new ToneProcessor();
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if( baseband_processor ) {
|
|
if( direction == baseband::Direction::Receive ) {
|
|
rf::rssi::start();
|
|
}
|
|
baseband::dma::enable(direction);
|
|
} else {
|
|
baseband::dma::disable();
|
|
rf::rssi::stop();
|
|
}
|
|
}
|
|
|
|
baseband::dma::configure(
|
|
baseband_buffer.data(),
|
|
direction
|
|
);
|
|
|
|
baseband_configuration = message->configuration;
|
|
};
|
|
|
|
/* TODO: Ensure DMAs are configured to point at first LLI in chain. */
|
|
|
|
rf::rssi::dma::allocate(4, 400);
|
|
|
|
touch::dma::allocate();
|
|
touch::dma::enable();
|
|
|
|
baseband::dma::configure(
|
|
baseband_buffer.data(),
|
|
direction
|
|
);
|
|
//baseband::dma::allocate(4, 2048);d
|
|
|
|
while(true) {
|
|
const auto events = event_dispatcher.wait();
|
|
event_dispatcher.dispatch(events);
|
|
}
|
|
|
|
return 0;
|
|
}
|