mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
synced 2026-08-20 14:39:01 +00:00
Pezsma
a44a00acf0
* filters OK, radio configurations set * all modes are working, noise still needs work, especially in FM. A baseband enum is also needed * audio and decoding fixed, clipping and the baseband enum are still missing
110 lines
3.2 KiB
C++
110 lines
3.2 KiB
C++
/*
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* Copyright (C) 2026 Pezsma
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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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#ifndef __PROC_MORSE_H__
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#define __PROC_MORSE_H__
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#include "baseband_processor.hpp"
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#include "baseband_thread.hpp"
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#include "message.hpp"
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#include "dsp_decimate.hpp"
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#include "dsp_demodulate.hpp"
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#include "audio_output.hpp"
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#include "dsp_fir_taps.hpp"
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#include "rssi_thread.hpp"
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class MorseProcessor : public BasebandProcessor {
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public:
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MorseProcessor() {}
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void execute(const buffer_c8_t& buffer) override;
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void on_message(const Message* const p) override;
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private:
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void configure(uint8_t mode);
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buffer_f32_t demodulate(const buffer_c16_t& channel);
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void update_goertzel_coeff(float freq);
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void measure_frequency(int32_t sample);
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void process_decoding(int32_t sample);
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BasebandThread baseband_thread{3072000, this, baseband::Direction::Receive};
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RSSIThread rssi_thread{};
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std::array<complex16_t, 512> dst{};
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const buffer_c16_t dst_buffer{
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dst.data(),
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dst.size()};
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std::array<float, 32> audio{};
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const buffer_f32_t audio_buffer{
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audio.data(),
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audio.size()};
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dsp::decimate::FIRC8xR16x24FS4Decim8 decim_0{};
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dsp::decimate::FIRC16xR16x32Decim8 decim_1{};
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dsp::decimate::FIRAndDecimateComplex channel_filter{};
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dsp::demodulate::AM demod_AM{};
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dsp::demodulate::FM demod_cw_fm{};
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dsp::demodulate::SSB demod_ssb{};
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AudioOutput audio_output{};
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bool configured{false};
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enum class ModulationMode : uint8_t {
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AM = 0,
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FM = 1,
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DSB = 2,
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USB = 3,
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LSB = 4
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};
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ModulationMode modulation = ModulationMode::AM;
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int32_t user_squelch_level{0};
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bool squelch_is_open{true};
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int32_t squelch_hold{0};
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// frequency measurement variables
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uint32_t meas_samples_in_period{0};
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bool meas_signal_state_high{false};
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uint32_t meas_last_period_len{0};
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uint32_t meas_consistency_count{0};
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float meas_freq_accumulator{0.0f};
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uint32_t meas_freq_count{0};
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uint32_t ui_update_timer{0};
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float current_freq{700.0f};
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// --- Decoding variables (Goertzel) ---
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int32_t coeff_int{0};
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int32_t s_prev_i{0};
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int32_t s_prev2_i{0};
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uint32_t goertzel_count{0};
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uint32_t duration_samples{0};
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bool was_signaling{false};
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int64_t noise_floor{5000};
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int32_t startup_delay{20};
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float dc_average = 0.0f; // DC level tracking
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int32_t dc_average_int = 0;
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MorseRXDataMessage message{};
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MorseRXfreqMessage freq_message{};
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};
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#endif |