mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
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99 lines
2.3 KiB
C++
99 lines
2.3 KiB
C++
/*
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* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
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* Copyright (C) 2016 Furrtek
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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_POCSAG_H__
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#define __PROC_POCSAG_H__
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#include "baseband_processor.hpp"
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#include "baseband_thread.hpp"
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#include "rssi_thread.hpp"
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#include "dsp_decimate.hpp"
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#include "dsp_demodulate.hpp"
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#include "pocsag_packet.hpp"
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#include "message.hpp"
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#include "portapack_shared_memory.hpp"
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#include <cstdint>
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class POCSAGProcessor : 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 message) override;
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private:
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enum rx_states {
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WAITING = 0,
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PREAMBLE = 32,
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SYNC = 64,
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//LOSING_SYNC = 65,
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//LOST_SYNC = 66,
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//ADDRESS = 67,
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//MESSAGE = 68,
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//END_OF_MESSAGE = 69
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};
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static constexpr size_t baseband_fs = 1536000;
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BasebandThread baseband_thread { baseband_fs, this, NORMALPRIO + 20, baseband::Direction::Receive };
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RSSIThread rssi_thread { NORMALPRIO + 10 };
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std::array<complex16_t, 512> dst;
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const buffer_c16_t dst_buffer {
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dst.data(),
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dst.size()
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};
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std::array<float, 32> audio;
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const buffer_f32_t audio_buffer {
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audio.data(),
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audio.size()
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};
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dsp::decimate::FIRC8xR16x24FS4Decim8 decim_0;
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dsp::decimate::FIRC16xR16x32Decim8 decim_1;
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dsp::demodulate::FM demod;
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uint32_t sync_timeout;
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uint32_t msg_timeout;
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uint32_t dcd_shreg;
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uint32_t sphase;
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uint32_t rx_data;
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uint32_t last_rx_data;
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uint32_t rx_bit;
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bool configured = false;
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rx_states rx_state;
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size_t c, frame_counter;
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pocsag::POCSAGPacket packet;
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void configure(const POCSAGConfigureMessage& message);
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};
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#endif/*__PROC_POCSAG_H__*/
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