mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
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Pezsma
877ede5f86
* Adder morse receiver app. Works with cw and fm mode. Adaptive speed learning. Logging.
90 lines
2.5 KiB
C++
90 lines
2.5 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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void update_goertzel_coeff(float freq);
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private:
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bool configured{false};
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size_t baseband_fs = 3072000;
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BasebandThread baseband_thread{baseband_fs, this, baseband::Direction::Receive};
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RSSIThread rssi_thread{};
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std::array<complex16_t, 512> dst_buffer{};
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std::array<int16_t, 32> audio_buffer{};
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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::FM demod{};
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AudioOutput audio_output{};
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// Goertzel and signal detection
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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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// Variables required for measurement
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int16_t prev_sample{0};
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uint32_t zc_counter{0};
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float current_freq{0.0f};
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int32_t lpf_sample{0};
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int32_t dc_offset{0};
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// Squelch and stability
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bool squelch_is_open{false};
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int32_t squelch_hold{0};
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int32_t user_squelch_level{0};
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int64_t noise_floor{0};
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int32_t startup_delay{0}; // Power-on delay
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int32_t last_zc_counter{0}; // Previous ZC measurement for comparison
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MorseRXDataMessage message{};
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void configure();
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};
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#endif // __PROC_MORSE_H__
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