112 lines
3.3 KiB
C++
112 lines
3.3 KiB
C++
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/*
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* Copyright (C) 2014 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 __ADSB_H__
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#define __ADSB_H__
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#include "adsb_frame.hpp"
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#include "ui.hpp"
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#include <cstring>
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#include <string>
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namespace adsb {
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enum downlink_format {
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DF_ADSB = 17,
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DF_EHS_SQUAWK = 21
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};
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enum type_code {
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TC_IDENT = 4,
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TC_AIRBORNE_POS = 11,
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TC_AIRBORNE_VELO = 19
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};
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enum data_selector {
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BDS_ID = 0x20,
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BDS_ID_MARKS = 0x21,
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BDS_INTENT = 0x40,
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BDS_HEADING = 0x60
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};
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struct adsb_pos {
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bool valid;
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float latitude;
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float longitude;
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int32_t altitude;
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};
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struct adsb_vel {
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bool valid;
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int32_t speed; //knot
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uint16_t heading; //degree
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int32_t v_rate; //ft/min
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};
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const float CPR_MAX_VALUE = 131072.0;
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const float adsb_lat_lut[58] = {
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10.47047130, 14.82817437, 18.18626357, 21.02939493,
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23.54504487, 25.82924707, 27.93898710, 29.91135686,
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31.77209708, 33.53993436, 35.22899598, 36.85025108,
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38.41241892, 39.92256684, 41.38651832, 42.80914012,
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44.19454951, 45.54626723, 46.86733252, 48.16039128,
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49.42776439, 50.67150166, 51.89342469, 53.09516153,
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54.27817472, 55.44378444, 56.59318756, 57.72747354,
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58.84763776, 59.95459277, 61.04917774, 62.13216659,
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63.20427479, 64.26616523, 65.31845310, 66.36171008,
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67.39646774, 68.42322022, 69.44242631, 70.45451075,
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71.45986473, 72.45884545, 73.45177442, 74.43893416,
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75.42056257, 76.39684391, 77.36789461, 78.33374083,
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79.29428225, 80.24923213, 81.19801349, 82.13956981,
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83.07199445, 83.99173563, 84.89166191, 85.75541621,
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86.53536998, 87.00000000
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};
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const float PI = 3.14159265358979323846;
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const float NZ = 15.0;
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void make_frame_adsb(ADSBFrame& frame, const uint32_t ICAO_address);
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void encode_frame_id(ADSBFrame& frame, const uint32_t ICAO_address, const std::string& callsign);
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std::string decode_frame_id(ADSBFrame& frame);
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void encode_frame_pos(ADSBFrame& frame, const uint32_t ICAO_address, const int32_t altitude,
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const float latitude, const float longitude, const uint32_t time_parity);
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adsb_pos decode_frame_pos(ADSBFrame& frame_even, ADSBFrame& frame_odd);
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void encode_frame_velo(ADSBFrame& frame, const uint32_t ICAO_address, const uint32_t speed,
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const float angle, const int32_t v_rate);
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adsb_vel decode_frame_velo(ADSBFrame& frame);
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//void encode_frame_emergency(ADSBFrame& frame, const uint32_t ICAO_address, const uint8_t code);
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void encode_frame_squawk(ADSBFrame& frame, const uint32_t squawk);
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} /* namespace adsb */
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#endif/*__ADSB_H__*/
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