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Improved POCSAG receiver reliability

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furrtek 2017-02-05 20:57:20 +00:00
parent 46482a110c
commit 98f89a84bb
11 changed files with 304 additions and 164 deletions
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65
firmware/common/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 __POCSAG_H__
#define __POCSAG_H__
#define POCSAG_TIMEOUT (576 * 2) // Preamble length * 2
#define POCSAG_SYNC 0x7CD215D8
#define POCSAG_IDLE 0x7A89C197
#define POCSAG_AUDIO_RATE 24000
#define POCSAG_BATCH_LENGTH (17 * 32)
#include "pocsag_packet.hpp"
namespace pocsag {
enum Mode : uint32_t {
STATE_CLEAR,
STATE_HAVE_ADDRESS,
STATE_GETTING_MSG
};
enum OutputType : uint32_t {
EMPTY,
ADDRESS,
MESSAGE
};
struct POCSAGState {
uint32_t function;
uint32_t address;
Mode mode = STATE_CLEAR;
OutputType out_type = EMPTY;
uint32_t ascii_data;
uint32_t ascii_idx;
std::string output;
};
std::string bitrate_str(BitRate bitrate);
std::string flag_str(PacketFlag packetflag);
bool decode_batch(const POCSAGPacket& batch, POCSAGState * const state);
} /* namespace pocsag */
#endif/*__POCSAG_H__*/