portapack-mayhem/firmware/baseband/proc_pocsag.hpp
Erwin Ried 4aaac8545b
Pocsag improvements (#20)
* Update analog_audio_app.cpp (#353)

* Adding phase field (extracted from @jamesshao8 repo)
2020-05-09 13:13:21 +02:00

108 lines
2.9 KiB
C++

/*
* Copyright (C) 1996 Thomas Sailer (sailer@ife.ee.ethz.ch, hb9jnx@hb9w.che.eu)
* Copyright (C) 2012-2014 Elias Oenal (multimon-ng@eliasoenal.com)
* Copyright (C) 2015 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_POCSAG_H__
#define __PROC_POCSAG_H__
#include "baseband_processor.hpp"
#include "baseband_thread.hpp"
#include "rssi_thread.hpp"
#include "dsp_decimate.hpp"
#include "dsp_demodulate.hpp"
#include "pocsag_packet.hpp"
#include "pocsag.hpp"
#include "message.hpp"
#include "audio_output.hpp"
#include "portapack_shared_memory.hpp"
#include <cstdint>
class POCSAGProcessor : public BasebandProcessor {
public:
void execute(const buffer_c8_t& buffer) override;
void on_message(const Message* const message) override;
private:
enum rx_states {
WAITING = 0,
PREAMBLE = 32,
SYNC = 64,
//LOSING_SYNC = 65,
//LOST_SYNC = 66,
//ADDRESS = 67,
//MESSAGE = 68,
//END_OF_MESSAGE = 69
};
static constexpr size_t baseband_fs = 3072000;
BasebandThread baseband_thread { baseband_fs, this, NORMALPRIO + 20, baseband::Direction::Receive };
RSSIThread rssi_thread { NORMALPRIO + 10 };
std::array<complex16_t, 512> dst { };
const buffer_c16_t dst_buffer {
dst.data(),
dst.size()
};
std::array<float, 32> audio { };
const buffer_f32_t audio_buffer {
audio.data(),
audio.size()
};
dsp::decimate::FIRC8xR16x24FS4Decim8 decim_0 { };
dsp::decimate::FIRC16xR16x32Decim8 decim_1 { };
dsp::decimate::FIRAndDecimateComplex channel_filter { };
dsp::demodulate::FM demod { };
//AudioOutput audio_output { };
uint32_t sync_timeout { 0 };
uint32_t msg_timeout { 0 };
uint32_t slicer_sr { 0 };
uint32_t sphase { 0 };
uint32_t sphase_delta { 0 };
uint32_t sphase_delta_half { 0 };
uint32_t sphase_delta_eighth { 0 };
uint32_t rx_data { 0 };
uint32_t rx_bit { 0 };
bool configured = false;
rx_states rx_state { WAITING };
pocsag::BitRate bitrate { pocsag::BitRate::FSK1200 };
bool phase;
uint32_t codeword_count { 0 };
pocsag::POCSAGPacket packet { };
void push_packet(pocsag::PacketFlag flag);
void configure(const POCSAGConfigureMessage& message);
};
#endif/*__PROC_POCSAG_H__*/