mayhem-firmware/firmware/baseband/proc_afsk.hpp

/*
 * Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
 * Copyright (C) 2016 Furrtek
 *
 * This file is part of PortaPack.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */

#ifndef __PROC_AFSK_H__
#define __PROC_AFSK_H__

#include "baseband_processor.hpp"
#include "baseband_thread.hpp"

#define AFSK_SAMPLERATE 1536000
#define AFSK_DELTA_COEF ((1ULL << 32) / AFSK_SAMPLERATE)

class AFSKProcessor : public BasebandProcessor {
public:
	void execute(const buffer_c8_t& buffer) override;
	
	void on_message(const Message* const msg) override;

private:
	bool configured = false;
	
	BasebandThread baseband_thread { AFSK_SAMPLERATE, this, NORMALPRIO + 20, baseband::Direction::Transmit };
	
	uint32_t afsk_samples_per_bit { 0 };
	uint32_t afsk_phase_inc_mark { 0 };
	uint32_t afsk_phase_inc_space { 0 };
	uint8_t afsk_repeat { 0 };
	uint32_t fm_delta { 0 };
	uint8_t symbol_count { 0 };
	
	uint8_t repeat_counter { 0 };
    uint8_t bit_pos { 0 };
    uint16_t * word_ptr { };
    uint16_t cur_word { 0 };
    uint8_t cur_bit { 0 };
    uint32_t sample_count { 0 };
	uint32_t tone_phase { 0 }, phase { 0 }, sphase { 0 };
	int32_t tone_sample { 0 }, delta { 0 };
	
	int8_t re { 0 }, im { 0 };
	
	TXProgressMessage txprogress_message { };
};

#endif