mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
synced 2026-07-26 10:38:52 +00:00
Luca
b5d84fcc4d
* First test * Reorder includes for consistency and fix string dereference in VorCdiIndicator * Add memory section and linker script entry for vor_rx application * Testing VOR TX * Moving VOR TX to SD * Code refactoring to align with guidelines * Add TODO comment to verify radial sign convention in vor_tx_config * Remove unnecessary set_dirty() calls in VorRxView methods * Update Course Deviation Indicator label and adjust UI element positions * Update VorTxView to run prepared image from memory map * Update build condition in nightly release workflow to include workflow_dispatch event * Reverting action changes * Adjust Course Deviation Indicator layout and refine painting logic * Refactor VorRxView UI elements for improved layout and clarity * Add calibration field and update radial calculation logic in VorRxView * Enhance VOR processing: add renormalization to phase oscillator, improve signal handling, and update configuration parameters * Implement radial smoothing and TO/FROM state handling in VorRxView; update VOR processing logic * Setting comments inline * Refactor VorCdiIndicator and VorRxView: change normalize_signed_degrees to use int32_t, update radial smoothing to use fixed point arithmetic to reduce flash usage * Update external app address end to 0xAE0B0000 * Update set_vor_tx_config to include enabled parameter for consistency * Refactor VorRx to omit decim_2 stage and update comments for clarity on VOR processing * Add RSSI, Channel, and Audio fields to VorRxView to mimic existing apps * Refactor VorRxView labels and status messages * Update VorRxView calibration field range to allow full circle input * Completing Ident transmission logic * Fixing TX gain and moving log label * Refactor VOR phase calculations and update radial offset handling for accurate bearing representation * Add low-pass filters to strip 9960 Hz subcarrier from audio output
91 lines
3.6 KiB
C++
91 lines
3.6 KiB
C++
/*
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* Copyright (C) 2026 PortaPack Mayhem
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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; 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_VOR_TX_H__
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#define __PROC_VOR_TX_H__
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#include "baseband_processor.hpp"
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#include "baseband_thread.hpp"
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// Generates a conventional VOR composite signal as DSB-AM (carrier at LO, Q = 0):
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// - 30 Hz "variable" tone, amplitude-modulated directly (phase = transmitted radial)
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// - 9960 Hz subcarrier, FM-modulated (+/- 480 Hz) by a 30 Hz "reference" tone
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// - optional 1020 Hz identification tone
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// The radial encoded is the phase difference between the variable and reference 30 Hz tones.
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class VorTxProcessor : public BasebandProcessor {
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public:
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void execute(const buffer_c8_t& buffer) override;
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void on_message(const Message* const msg) override;
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private:
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static constexpr size_t baseband_fs = 1536000;
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static constexpr uint64_t phase_period = 1ULL << 32;
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// Per-sample phase increments (top byte indexes the 256-entry sine table).
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static constexpr uint32_t delta_30 = static_cast<uint32_t>(30ULL * phase_period / baseband_fs);
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static constexpr uint32_t delta_sub = static_cast<uint32_t>(9960ULL * phase_period / baseband_fs);
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static constexpr uint32_t delta_1020 = static_cast<uint32_t>(1020ULL * phase_period / baseband_fs);
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static constexpr uint32_t delta_480 = static_cast<uint32_t>(480ULL * phase_period / baseband_fs);
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// AM levels (int8 scale). carrier_level + sum of contributions must stay <= 127.
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static constexpr int32_t carrier_level = 60;
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static constexpr int32_t var_depth = 18; // ~30% of carrier
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static constexpr int32_t sub_depth = 18; // ~30% of carrier
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static constexpr int32_t id_depth = 6; // ~10% of carrier
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// CW identifier keying. Real VOR stations key the 1020 Hz ident tone in
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// Morse at ~7 words per minute, so the schedule below is expressed in
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// "dot" time units and rendered to on/off sample runs at config time.
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static constexpr uint32_t ident_wpm = 7;
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static constexpr size_t max_ident_segments = 128;
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// VOR ident is transmitted at least every 10 s; repeat the keyed identifier
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// on a fixed 10 s cycle (ident start to next ident start).
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static constexpr uint32_t ident_period_samples = 10 * baseband_fs;
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struct IdentSegment {
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bool on;
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uint32_t length; // duration in samples
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};
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uint32_t phase_30{0};
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uint32_t phase_sub{0};
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uint32_t phase_id{0};
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uint32_t radial_offset{0};
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bool ident_enabled{true};
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bool configured{false};
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char ident_text[8]{};
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IdentSegment ident_segments[max_ident_segments]{};
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size_t ident_segment_count{0};
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size_t ident_index{0};
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uint32_t ident_sample_counter{0};
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void vor_tx_config(const VorTxConfigureMessage& message);
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void build_ident_schedule();
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bool ident_tone_active();
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/* NB: Threads should be the last members in the class definition. */
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BasebandThread baseband_thread{baseband_fs, this, baseband::Direction::Transmit};
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};
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#endif /* __PROC_VOR_TX_H__ */
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