portapack-mayhem/firmware/baseband/proc_siggen.hpp

/*
 * Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
 * Copyright (C) 2017 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_SIGGEN_H__
#define __PROC_SIGGEN_H__

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

class SigGenProcessor : 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 { 1536000, this, NORMALPRIO + 20, baseband::Direction::Transmit };
	
	uint32_t tone_delta { 0 }, fm_delta { },tone_phase { 0 };
	uint8_t tone_shape { };
    uint32_t sample_count { 0 };
    bool auto_off { };
	int32_t phase { 0 }, sphase { 0 }, delta { 0 }; 	// they may have sign in the pseudo random sample generation.
	int8_t  sample { 0 }, re { 0 }, im { 0 };			// they have sign + and -.
   	uint16_t seed_value_16 = {0xACE1};					// seed 16 bits lfsr : any nonzero start state will work. 
	uint16_t lfsr_16 { }, bit_16 { }; 					// bit must be 16-bit to allow bit<<15 later in the code */
	uint8_t counter {0};
	// uint8_t seed_value = {0x56}; 					// Finally not used lfsr of 8 bits , seed 8blfsr : any nonzero start state will work. 
	// uint8_t lfsr { }, bit { };  						// Finally not used lfsr of 8 bits , bit must be 8-bit to allow bit<<7 later in the code */

	TXProgressMessage txprogress_message { };
};

#endif