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Added basic POCSAG receiver

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Added Yes/no modal screen (for future tx warnings)
This commit is contained in:
furrtek 2016-08-23 08:45:33 +02:00
parent c2fbc0c8d5
commit 02f0271553
34 changed files with 944 additions and 42 deletions
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97
firmware/baseband/proc_pocsag.hpp Normal file
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/*
* 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_iir.hpp"
#include "dsp_decimate.hpp"
#include "dsp_demodulate.hpp"
#include "pocsag_packet.hpp"
#include "message.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 = 1536000;
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::demodulate::FM demod;
uint32_t sync_timeout;
uint32_t dcd_shreg;
uint32_t sphase;
uint32_t rx_data;
uint32_t rx_bit;
bool configured = false;
rx_states rx_state;
size_t c, frame_counter;
pocsag::POCSAGPacket packet;
void configure(const POCSAGConfigureMessage& message);
};
#endif/*__PROC_POCSAG_H__*/