portapack-mayhem/firmware/baseband/proc_fsk.hpp

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/*
* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
*
* 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_FSK_H__
#define __PROC_FSK_H__
#include "baseband_processor.hpp"
#include "channel_decimator.hpp"
#include "dsp_decimate.hpp"
#include "dsp_demodulate.hpp"
#include "dsp_fir_taps.hpp"
#include "clock_recovery.hpp"
#include "access_code_correlator.hpp"
#include "packet_builder.hpp"
#include "message.hpp"
#include <cstdint>
#include <cstddef>
#include <bitset>
class FSKProcessor : public BasebandProcessor {
public:
FSKProcessor(MessageHandlerMap& message_handlers);
~FSKProcessor();
void configure(const FSKConfiguration new_configuration);
void execute(buffer_c8_t buffer) override;
private:
ChannelDecimator decimator { ChannelDecimator::DecimationFactor::By16 };
const fir_taps_real<64>& channel_filter_taps = taps_64_lp_031_070_tfilter;
dsp::decimate::FIRAndDecimateBy2Complex<64> channel_filter { channel_filter_taps.taps };
dsp::demodulate::FM demod { 76800, 9600 * 2 };
ClockRecovery clock_recovery;
AccessCodeCorrelator access_code_correlator;
PacketBuilder packet_builder;
MessageHandlerMap& message_handlers;
void consume_symbol(const uint_fast8_t symbol, const bool access_code_found);
void payload_handler(const std::bitset<256>& payload, const size_t bits_received);
};
#endif/*__PROC_FSK_H__*/