kopia lustrzana https://github.com/f4exb/sdrangel
1207 wiersze
40 KiB
C++
1207 wiersze
40 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2020 Jon Beniston, M7RCE //
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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 as version 3 of the License, or //
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// (at your option) 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 V3 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. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#include <QRegExp>
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#include <QRegularExpression>
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#include <QStringList>
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#include <QDateTime>
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#include "aprs.h"
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#include "util/units.h"
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inline bool inRange(unsigned low, unsigned high, unsigned x)
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{
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return (low <= x && x <= high);
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}
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// Required for Mic-E Decoding
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inline int charToIntAscii(QString&s, int idx)
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{
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char c = s.toLatin1().at(idx);
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return int(c);
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}
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// See: http://www.aprs.org/doc/APRS101.PDF
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// Currently we only decode what we want to display on the map
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bool APRSPacket::decode(AX25Packet packet)
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{
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// Check type, PID and length of packet
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if ((packet.m_type == "UI") && (packet.m_pid == "f0") && (packet.m_dataASCII.length() >= 1))
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{
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// Check destination address
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QRegularExpression re("^(AIR.*|ALL.*|AP.*|BEACON|CQ.*|GPS.*|DF.*|DGPS.*|DRILL.*|DX.*|ID.*|JAVA.*|MAIL.*|MICE.*|QST.*|QTH.*|RTCM.*|SKY.*|SPACE.*|SPC.*|SYM.*|TEL.*|TEST.*|TLM.*|WX.*|ZIP.*)");
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QRegularExpression re_mice("^[A-LP-Z0-9]{3}[L-Z0-9]{3}.?$"); // Mic-E Encoded Destination, 6-7 bytes
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if (re.match(packet.m_to).hasMatch() || re_mice.match(packet.m_to).hasMatch())
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{
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m_from = packet.m_from;
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m_to = packet.m_to;
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m_via = packet.m_via;
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m_data = packet.m_dataASCII;
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if (packet.m_to.startsWith("GPS") || packet.m_to.startsWith("SPC") || packet.m_to.startsWith("SYM"))
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{
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// FIXME: Trailing letters xyz specify a symbol
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}
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// Source address SSID can be used to specify a symbol
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// First byte of information field is data type ID
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char dataType = packet.m_dataASCII[0].toLatin1();
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int idx = 1;
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switch (dataType)
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{
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case '!': // Position without timestamp or Ultimeter 2000 WX Station
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parsePosition(packet.m_dataASCII, idx);
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if (m_symbolCode == '_')
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parseWeather(packet.m_dataASCII, idx, false);
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else if (m_symbolCode == '@')
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parseStorm(packet.m_dataASCII, idx);
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else
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{
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parseDataExension(packet.m_dataASCII, idx);
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parseComment(packet.m_dataASCII, idx);
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}
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break;
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case '#': // Peet Bros U-II Weather Station
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case '$': // Raw GPS data or Ultimeter 2000
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case '%': // Agrelo DFJr / MicroFinder
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break;
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case ')': // Item
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parseItem(packet.m_dataASCII, idx);
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parsePosition(packet.m_dataASCII, idx);
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parseDataExension(packet.m_dataASCII, idx);
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parseComment(packet.m_dataASCII, idx);
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break;
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case '*': // Peet Bros U-II Weather Station
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break;
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case '/': // Position with timestamp (no APRS messaging)
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parseTime(packet.m_dataASCII, idx);
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parsePosition(packet.m_dataASCII, idx);
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if (m_symbolCode == '_')
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parseWeather(packet.m_dataASCII, idx, false);
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else if (m_symbolCode == '@')
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parseStorm(packet.m_dataASCII, idx);
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else
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{
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parseDataExension(packet.m_dataASCII, idx);
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parseComment(packet.m_dataASCII, idx);
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}
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break;
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case ':': // Message
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parseMessage(packet.m_dataASCII, idx);
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break;
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case ';': // Object
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parseObject(packet.m_dataASCII, idx);
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parseTime(packet.m_dataASCII, idx);
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parsePosition(packet.m_dataASCII, idx);
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if (m_symbolCode == '_')
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parseWeather(packet.m_dataASCII, idx, false);
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else if (m_symbolCode == '@')
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parseStorm(packet.m_dataASCII, idx);
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else
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{
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parseDataExension(packet.m_dataASCII, idx);
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parseComment(packet.m_dataASCII, idx);
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}
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break;
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case '<': // Station Capabilities
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break;
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case '=': // Position without timestamp (with APRS messaging)
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parsePosition(packet.m_dataASCII, idx);
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if (m_symbolCode == '_')
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parseWeather(packet.m_dataASCII, idx, false);
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else if (m_symbolCode == '@')
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parseStorm(packet.m_dataASCII, idx);
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else
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{
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parseDataExension(packet.m_dataASCII, idx);
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parseComment(packet.m_dataASCII, idx);
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}
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break;
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case '>': // Status
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parseStatus(packet.m_dataASCII, idx);
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break;
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case '?': // Query
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break;
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case '@': // Position with timestamp (with APRS messaging)
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parseTime(packet.m_dataASCII, idx);
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parsePosition(packet.m_dataASCII, idx);
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if (m_symbolCode == '_')
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parseWeather(packet.m_dataASCII, idx, false);
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else if (m_symbolCode == '@')
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parseStorm(packet.m_dataASCII, idx);
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else
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{
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parseDataExension(packet.m_dataASCII, idx);
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parseComment(packet.m_dataASCII, idx);
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}
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break;
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case 'T': // Telemetry data
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parseTelemetry(packet.m_dataASCII, idx);
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break;
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case '_': // Weather report (without position)
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parseTimeMDHM(packet.m_dataASCII, idx);
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parseWeather(packet.m_dataASCII, idx, true);
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break;
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case '`': // Mic-E Information Field Data (current)
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case '\'': // Mic-E Information Field Data (old)
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parseMicE(packet.m_dataASCII, idx, m_to);
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break;
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case '{': // User-defined APRS packet format
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break;
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default:
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return false;
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}
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if (m_hasSymbol)
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{
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int num = m_symbolCode - '!';
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m_symbolImage = QString("aprs/aprs/aprs-symbols-24-%1-%2.png").arg(m_symbolTable == '/' ? 0 : 1).arg(num, 2, 10, QChar('0'));
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}
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return true;
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} else {
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qDebug() << "APRSPacket::decode: AX.25 Destination did not match known regexp " << m_to;
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}
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} else {
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qDebug() << "APRSPacket::decode: Invalid value in type=" << packet.m_type << " pid=" << packet.m_pid << " length of " << packet.m_dataASCII;
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}
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return false;
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}
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int APRSPacket::charToInt(QString&s, int idx)
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{
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char c = s[idx].toLatin1();
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return c == ' ' ? 0 : c - '0';
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}
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bool APRSPacket::parseTime(QString& info, int& idx)
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{
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if (info.length() < idx+7)
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return false;
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QDateTime currentDateTime;
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if (info[idx+6]=='h')
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{
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// HMS format
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if (info[idx].isDigit()
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&& info[idx+1].isDigit()
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&& info[idx+2].isDigit()
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&& info[idx+3].isDigit()
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&& info[idx+4].isDigit()
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&& info[idx+5].isDigit())
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{
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int hour = charToInt(info, idx) * 10 + charToInt(info, idx+1);
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int min = charToInt(info, idx+2) * 10 + charToInt(info, idx+3);
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int sec = charToInt(info, idx+4) * 10 + charToInt(info, idx+5);
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if (hour > 23)
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return false;
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if (min > 59)
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return false;
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if (sec > 60) // Can have 60 seconds when there's a leap second
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return false;
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m_utc = true;
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m_timestamp = QDateTime(QDate::currentDate(), QTime(hour, min, sec));
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m_hasTimestamp = true;
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idx += 7;
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return true;
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}
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else
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return false;
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}
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else if ((info[idx+6]=='z') || (info[idx+6]=='/'))
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{
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// DHM format
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if (info[idx].isDigit()
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&& info[idx+1].isDigit()
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&& info[idx+2].isDigit()
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&& info[idx+3].isDigit()
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&& info[idx+4].isDigit()
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&& info[idx+5].isDigit())
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{
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int day = charToInt(info, idx) * 10 + charToInt(info, idx+1);
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int hour = charToInt(info, idx+2) * 10 + charToInt(info, idx+3);
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int min = charToInt(info, idx+4) * 10 + charToInt(info, idx+5);
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if (day > 31)
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return false;
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if (hour > 23)
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return false;
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if (min > 59)
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return false;
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m_utc = info[idx+6]=='z';
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currentDateTime = m_utc ? QDateTime::currentDateTimeUtc() : QDateTime::currentDateTime();
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m_timestamp = QDateTime(QDate(currentDateTime.date().year(), currentDateTime.date().month(), day), QTime(hour, min, 0));
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m_hasTimestamp = true;
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idx += 7;
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return true;
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}
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else
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return false;
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}
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else
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return false;
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}
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// Time format used in weather reports without position
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bool APRSPacket::parseTimeMDHM(QString& info, int& idx)
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{
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if (info.length() < idx+8)
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return false;
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if (info[idx].isDigit()
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&& info[idx+1].isDigit()
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&& info[idx+2].isDigit()
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&& info[idx+3].isDigit()
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&& info[idx+4].isDigit()
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&& info[idx+5].isDigit()
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&& info[idx+6].isDigit()
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&& info[idx+7].isDigit())
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{
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int month = charToInt(info, idx) * 10 + charToInt(info, idx+1);
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int day = charToInt(info, idx+2) * 10 + charToInt(info, idx+3);
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int hour = charToInt(info, idx+4) * 10 + charToInt(info, idx+5);
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int min = charToInt(info, idx+6) * 10 + charToInt(info, idx+7);
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if (month > 12)
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return false;
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if (day > 31)
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return false;
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if (hour > 23)
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return false;
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if (min > 59)
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return false;
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m_utc = true;
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QDateTime currentDateTime = QDateTime::currentDateTimeUtc();
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m_timestamp = QDateTime(QDate(currentDateTime.date().year(), month, day), QTime(hour, min, 0));
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m_hasTimestamp = true;
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return true;
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}
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else
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return false;
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}
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// Position ambigutiy can be specified by using spaces instead of digits in lats and longs
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bool APRSPacket::isLatLongChar(const QChar c)
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{
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return (c.isDigit() || c == ' ');
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}
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bool APRSPacket::parsePosition(QString& info, int& idx)
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{
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float latitude;
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float longitude;
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char table;
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char code;
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if (info.length() < idx+8+1+9+1)
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return false;
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// Latitude
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if (info[idx].isDigit()
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&& info[idx+1].isDigit()
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&& isLatLongChar(info[idx+2])
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&& isLatLongChar(info[idx+3])
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&& (info[idx+4]=='.')
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&& isLatLongChar(info[idx+5])
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&& isLatLongChar(info[idx+6])
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&& ((info[idx+7]=='N') || (info[idx+7]=='S')))
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{
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int deg = charToInt(info, idx) * 10 + charToInt(info, idx+1);
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int min = charToInt(info, idx+2) * 10 + charToInt(info, idx+3);
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int hundreths = charToInt(info, idx+5) * 10 + charToInt(info, idx+6);
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bool north = (info[idx+7]=='N');
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if (deg > 90)
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return false;
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else if ((deg == 90) && ((min != 0) || (hundreths != 0)))
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return false;
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latitude = ((float)deg) + min/60.0 + hundreths/60.0/100.0;
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if (!north)
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latitude = -latitude;
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idx += 8;
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}
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else
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return false;
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// Symbol table identifier
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table = info[idx++].toLatin1();
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// Longitude
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if (info[idx].isDigit()
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&& info[idx+1].isDigit()
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&& info[idx+2].isDigit()
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&& isLatLongChar(info[idx+3])
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&& isLatLongChar(info[idx+4])
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&& (info[idx+5]=='.')
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&& isLatLongChar(info[idx+6])
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&& isLatLongChar(info[idx+7])
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&& ((info[idx+8]=='E') || (info[idx+8]=='W')))
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{
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int deg = charToInt(info, idx) * 100 + charToInt(info, idx+1) * 10 + charToInt(info, idx+2);
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int min = charToInt(info, idx+3) * 10 + charToInt(info, idx+4);
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int hundreths = charToInt(info, idx+6) * 10 + charToInt(info, idx+7);
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bool east = (info[idx+8]=='E');
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if (deg > 180)
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return false;
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else if ((deg == 180) && ((min != 0) || (hundreths != 0)))
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return false;
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longitude = ((float)deg) + min/60.0 + hundreths/60.0/100.0;
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if (!east)
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longitude = -longitude;
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idx += 9;
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}
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else
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return false;
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// Symbol table code
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code = info[idx++].toLatin1();
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// Update state as we have a valid position
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m_latitude = latitude;
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m_longitude = longitude;
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m_hasPosition = true;
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m_symbolTable = table;
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m_symbolCode = code;
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m_hasSymbol = true;
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return true;
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}
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bool APRSPacket::parseDataExension(QString& info, int& idx)
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{
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int heightMap[] = {10, 20, 40, 80, 160, 320, 640, 1280, 2560, 5120};
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QStringList directivityMap = {"Omni", "NE", "E", "SE", "S", "SW", "W", "NW", "N", ""};
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int remainingLength = info.length() - idx;
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if (remainingLength < 7)
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return true;
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QString s = info.right(remainingLength);
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// Course and speed
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QRegExp courseSpeed("^([0-9]{3})\\/([0-9]{3})");
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if (courseSpeed.indexIn(s) >= 0)
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{
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m_course = courseSpeed.capturedTexts()[1].toInt();
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m_speed = courseSpeed.capturedTexts()[2].toInt();
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m_hasCourseAndSpeed = true;
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idx += 7;
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return true;
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}
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// Station radio details
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QRegExp phg("^PHG([0-9])([0-9])([0-9])([0-9])");
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if (phg.indexIn(s) >= 0)
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{
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// Transmitter power
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int powerCode = phg.capturedTexts()[1].toInt();
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int powerMap[] = {0, 1, 4, 9, 16, 25, 36, 49, 64, 81};
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m_powerWatts = powerMap[powerCode];
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// Antenna height
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int heightCode = phg.capturedTexts()[2].toInt();
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m_antennaHeightFt = heightMap[heightCode];
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// Antenna gain
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m_antennaGainDB = phg.capturedTexts()[3].toInt();
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// Antenna directivity
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int directivityCode = phg.capturedTexts()[4].toInt();
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m_antennaDirectivity = directivityMap[directivityCode];
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m_hasStationDetails = true;
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idx += 7;
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return true;
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}
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// Radio range
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QRegExp rng("^RNG([0-9]{4})");
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if (rng.indexIn(s) >= 0)
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{
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m_radioRangeMiles = rng.capturedTexts()[1].toInt();
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m_hasRadioRange = true;
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idx += 7;
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return true;
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}
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// Omni-DF strength
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QRegExp dfs("^DFS([0-9])([0-9])([0-9])([0-9])");
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if (dfs.indexIn(s) >= 0)
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{
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// Strength S-points
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m_dfStrength = dfs.capturedTexts()[1].toInt();
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// Antenna height
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int heightCode = dfs.capturedTexts()[2].toInt();
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m_dfHeightFt = heightMap[heightCode];
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// Antenna gain
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m_dfGainDB = dfs.capturedTexts()[3].toInt();
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// Antenna directivity
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int directivityCode = dfs.capturedTexts()[4].toInt();
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m_dfAntennaDirectivity = directivityMap[directivityCode];
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m_hasDf = true;
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idx += 7;
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return true;
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}
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return true;
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}
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bool APRSPacket::parseComment(QString& info, int& idx)
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{
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int commentLength = info.length() - idx;
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if (commentLength > 0)
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{
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m_comment = info.right(commentLength);
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// Comment can contain altitude anywhere in it. Of the form /A=001234 in feet
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QRegExp re("\\/A=([0-9]{6})");
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int pos = re.indexIn(m_comment);
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if (pos >= 0)
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{
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|
m_altitudeFt = re.capturedTexts()[1].toInt();
|
|
m_hasAltitude = true;
|
|
// Strip it out of comment if at start of string
|
|
if (pos == 0)
|
|
m_comment = m_comment.mid(9);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool APRSPacket::parseInt(QString& info, int& idx, int chars, int& value, bool& hasValue)
|
|
{
|
|
int total = 0;
|
|
bool negative = false;
|
|
bool noValue = false;
|
|
|
|
for (int i = 0; i < chars; i++)
|
|
{
|
|
if (info[idx].isDigit())
|
|
{
|
|
total = total * 10;
|
|
total += info[idx].toLatin1() - '0';
|
|
}
|
|
else if ((i == 0) && (info[idx] == '-'))
|
|
negative = true;
|
|
else if ((info[idx] == '.') || (info[idx] == ' '))
|
|
noValue = true;
|
|
else
|
|
return false;
|
|
idx++;
|
|
}
|
|
if (!noValue)
|
|
{
|
|
if (negative)
|
|
value = -total;
|
|
else
|
|
value = total;
|
|
hasValue = true;
|
|
}
|
|
else
|
|
hasValue = false;
|
|
return true;
|
|
}
|
|
|
|
bool APRSPacket::parseWeather(QString& info, int& idx, bool positionLess)
|
|
{
|
|
if (!positionLess)
|
|
{
|
|
if (!parseInt(info, idx, 3, m_windDirection, m_hasWindDirection))
|
|
return false;
|
|
if (info[idx++] != '/')
|
|
return false;
|
|
if (!parseInt(info, idx, 3, m_windSpeed, m_hasWindSpeed))
|
|
return false;
|
|
}
|
|
|
|
// Weather data
|
|
bool done = false;
|
|
while (!done && (idx < info.length()))
|
|
{
|
|
switch (info[idx++].toLatin1())
|
|
{
|
|
case 'c': // Wind direction
|
|
if (!parseInt(info, idx, 3, m_windDirection, m_hasWindDirection))
|
|
return false;
|
|
break;
|
|
case 's': // Wind speed
|
|
if (!parseInt(info, idx, 3, m_windSpeed, m_hasWindSpeed))
|
|
return false;
|
|
break;
|
|
case 'g': // Gust
|
|
if (!parseInt(info, idx, 3, m_gust, m_hasGust))
|
|
return false;
|
|
break;
|
|
case 't': // Temp
|
|
if (!parseInt(info, idx, 3, m_temp, m_hasTemp))
|
|
{
|
|
qDebug() << "Failed parseing temp: idx" << idx;
|
|
return false;
|
|
}
|
|
break;
|
|
case 'r': // Rain last hour
|
|
if (!parseInt(info, idx, 3, m_rainLastHr, m_hasRainLastHr))
|
|
return false;
|
|
break;
|
|
case 'p': // Rain last 24 hours
|
|
if (!parseInt(info, idx, 3, m_rainLast24Hrs, m_hasRainLast24Hrs))
|
|
return false;
|
|
break;
|
|
case 'P': // Rain since midnight
|
|
if (!parseInt(info, idx, 3, m_rainSinceMidnight, m_hasRainSinceMidnight))
|
|
return false;
|
|
break;
|
|
case 'h': // Humidity
|
|
if (!parseInt(info, idx, 2, m_humidity, m_hasHumidity))
|
|
return false;
|
|
break;
|
|
case 'b': // Barometric pressure
|
|
if (!parseInt(info, idx, 5, m_barometricPressure, m_hasBarometricPressure))
|
|
return false;
|
|
break;
|
|
case 'L': // Luminosity <999
|
|
if (!parseInt(info, idx, 3, m_luminosity, m_hasLuminsoity))
|
|
return false;
|
|
break;
|
|
case 'l': // Luminosity >= 1000
|
|
if (!parseInt(info, idx, 3, m_luminosity, m_hasLuminsoity))
|
|
return false;
|
|
m_luminosity += 1000;
|
|
break;
|
|
case 'S': // Snowfall
|
|
if (!parseInt(info, idx, 3, m_snowfallLast24Hrs, m_hasSnowfallLast24Hrs))
|
|
return false;
|
|
break;
|
|
case '#': // Raw rain counter
|
|
if (!parseInt(info, idx, 3, m_rawRainCounter, m_hasRawRainCounter))
|
|
return false;
|
|
break;
|
|
case 'X': // Radiation level
|
|
if (!parseInt(info, idx, 3, m_radiationLevel, m_hasRadiationLevel))
|
|
return false;
|
|
break;
|
|
case 'F': // Floor water level
|
|
if (!parseInt(info, idx, 4, m_floodLevel, m_hasFloodLevel))
|
|
return false;
|
|
break;
|
|
case 'V': // Battery volts
|
|
if (!parseInt(info, idx, 3, m_batteryVolts, m_hasBatteryVolts))
|
|
return false;
|
|
break;
|
|
default:
|
|
done = true;
|
|
break;
|
|
}
|
|
}
|
|
if (done)
|
|
{
|
|
// APRS 1.1 spec says remaining fields are s/w and weather unit type
|
|
// But few real-world packets actually seem to conform to the spec
|
|
idx--;
|
|
int remaining = info.length() - idx;
|
|
m_weatherUnitType = info.right(remaining);
|
|
idx += remaining;
|
|
}
|
|
|
|
m_hasWeather = true;
|
|
return true;
|
|
}
|
|
|
|
|
|
bool APRSPacket::parseStorm(QString& info, int& idx)
|
|
{
|
|
bool unused;
|
|
|
|
if (!parseInt(info, idx, 3, m_stormDirection, unused))
|
|
return false;
|
|
if (info[idx++] != '/')
|
|
return false;
|
|
if (!parseInt(info, idx, 3, m_stormSpeed, unused))
|
|
return false;
|
|
if (info[idx++] != '/')
|
|
return false;
|
|
QString type = info.mid(idx, 2);
|
|
idx += 2;
|
|
if (type == "TS")
|
|
m_stormType = "Tropical storm";
|
|
else if (type == "HC")
|
|
m_stormType = "Hurrican";
|
|
else if (type == "TD")
|
|
m_stormType = "Tropical depression";
|
|
else
|
|
m_stormType = type;
|
|
|
|
if (info[idx++] != '/') // Sustained wind speed
|
|
return false;
|
|
if (!parseInt(info, idx, 3, m_stormSustainedWindSpeed, unused))
|
|
return false;
|
|
if (info[idx++] != '^') // Peak wind gusts
|
|
return false;
|
|
if (!parseInt(info, idx, 3, m_stormPeakWindGusts, unused))
|
|
return false;
|
|
if (info[idx++] != '/') // Central pressure
|
|
return false;
|
|
if (!parseInt(info, idx, 4, m_stormCentralPresure, unused))
|
|
return false;
|
|
if (info[idx++] != '>') // Radius hurrican winds
|
|
return false;
|
|
if (!parseInt(info, idx, 3, m_stormRadiusHurricanWinds, unused))
|
|
return false;
|
|
if (info[idx++] != '&') // Radius tropical storm winds
|
|
return false;
|
|
if (!parseInt(info, idx, 3, m_stormRadiusTropicalStormWinds, unused))
|
|
return false;
|
|
m_hasStormData = true;
|
|
// Optional field
|
|
if (info.length() >= idx + 4)
|
|
{
|
|
if (info[idx] != '%') // Radius whole gail
|
|
return true;
|
|
idx++;
|
|
if (!parseInt(info, idx, 3, m_stormRadiusWholeGail, m_hasStormRadiusWholeGail))
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool APRSPacket::parseObject(QString& info, int& idx)
|
|
{
|
|
if (info.length() < idx+10)
|
|
return false;
|
|
|
|
// Object names are 9 chars
|
|
m_objectName = info.mid(idx, 9).trimmed();
|
|
idx += 9;
|
|
|
|
if (info[idx] == '*')
|
|
m_objectLive = true;
|
|
else if (info[idx] == '_')
|
|
m_objectKilled = true;
|
|
else
|
|
return false;
|
|
idx++;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool APRSPacket::parseItem(QString& info, int& idx)
|
|
{
|
|
if (info.length() < idx+3)
|
|
return false;
|
|
|
|
// Item names are 3-9 chars long, excluding ! or _
|
|
m_objectName = "";
|
|
int i;
|
|
for (i = 0; i < 10; i++)
|
|
{
|
|
if (info.length() >= idx)
|
|
{
|
|
QChar c = info[idx];
|
|
if (c == '!' || c == '_')
|
|
break;
|
|
else
|
|
{
|
|
m_objectName.append(c);
|
|
idx++;
|
|
}
|
|
}
|
|
}
|
|
if (i == 11)
|
|
return false;
|
|
if (info[idx] == '!')
|
|
m_objectLive = true;
|
|
else if (info[idx] == '_')
|
|
m_objectKilled = true;
|
|
idx++;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool APRSPacket::parseStatus(QString& info, int& idx)
|
|
{
|
|
QString remaining = info.mid(idx);
|
|
|
|
QRegExp timestampRE("^([0-9]{6})z"); // DHM timestamp
|
|
QRegExp maidenheadRE("^([A-Z]{2}[0-9]{2}[A-Z]{0,2})[/\\\\]."); // Maidenhead grid locator and symbol
|
|
|
|
if (timestampRE.indexIn(remaining) >= 0)
|
|
{
|
|
parseTime(info, idx);
|
|
m_status = info.mid(idx);
|
|
idx += m_status.length();
|
|
}
|
|
else if (maidenheadRE.indexIn(remaining) >= 0)
|
|
{
|
|
m_maidenhead = maidenheadRE.capturedTexts()[1];
|
|
idx += m_maidenhead.length();
|
|
m_symbolTable = info[idx++].toLatin1();
|
|
m_symbolCode = info[idx++].toLatin1();
|
|
m_hasSymbol = true;
|
|
if (info[idx] == ' ')
|
|
{
|
|
idx++;
|
|
m_status = info.mid(idx);
|
|
idx += m_status.length();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
m_status = remaining;
|
|
idx += m_status.length();
|
|
}
|
|
m_hasStatus = true;
|
|
|
|
// Check for beam heading and power in meteor scatter status reports
|
|
int len = m_status.length();
|
|
if (len >= 3)
|
|
{
|
|
if (m_status[len-3] == '^')
|
|
{
|
|
bool error = false;
|
|
char h = m_status[len-2].toLatin1();
|
|
char p = m_status[len-1].toLatin1();
|
|
|
|
if (isdigit(h))
|
|
m_beamHeading = (h - '0') * 10;
|
|
else if (isupper(h))
|
|
m_beamHeading = (h - 'A') * 10 + 100;
|
|
else
|
|
error = true;
|
|
|
|
switch (p)
|
|
{
|
|
case '1': m_beamPower = 10; break;
|
|
case '2': m_beamPower = 40; break;
|
|
case '3': m_beamPower = 90; break;
|
|
case '4': m_beamPower = 160; break;
|
|
case '5': m_beamPower = 250; break;
|
|
case '6': m_beamPower = 360; break;
|
|
case '7': m_beamPower = 490; break;
|
|
case '8': m_beamPower = 640; break;
|
|
case '9': m_beamPower = 810; break;
|
|
case ':': m_beamPower = 1000; break;
|
|
case ';': m_beamPower = 1210; break;
|
|
case '<': m_beamPower = 1440; break;
|
|
case '=': m_beamPower = 1690; break;
|
|
case '>': m_beamPower = 1960; break;
|
|
case '?': m_beamPower = 2250; break;
|
|
case '@': m_beamPower = 2560; break;
|
|
case 'A': m_beamPower = 2890; break;
|
|
case 'B': m_beamPower = 3240; break;
|
|
case 'C': m_beamPower = 3610; break;
|
|
case 'D': m_beamPower = 4000; break;
|
|
case 'E': m_beamPower = 4410; break;
|
|
case 'F': m_beamPower = 4840; break;
|
|
case 'G': m_beamPower = 5290; break;
|
|
case 'H': m_beamPower = 5760; break;
|
|
case 'I': m_beamPower = 6250; break;
|
|
case 'J': m_beamPower = 6760; break;
|
|
case 'K': m_beamPower = 7290; break;
|
|
default: error = true; break;
|
|
}
|
|
if (!error)
|
|
{
|
|
m_hasBeam = true;
|
|
m_status = m_status.left(len - 3);
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool APRSPacket::parseMessage(QString& info, int& idx)
|
|
{
|
|
if (info.length() < idx+10)
|
|
return false;
|
|
|
|
// Addressee is fixed width
|
|
if (info[idx+9] != ':')
|
|
return false;
|
|
m_addressee = info.mid(idx, 9).trimmed();
|
|
idx += 10;
|
|
|
|
// Message
|
|
m_message = info.mid(idx);
|
|
idx += m_message.length();
|
|
|
|
// Check if telemetry parameter/unit names
|
|
if (m_message.startsWith("PARM."))
|
|
{
|
|
bool done = false;
|
|
QString s("");
|
|
int i = 5;
|
|
while (!done)
|
|
{
|
|
if (i >= m_message.length())
|
|
{
|
|
if (!s.isEmpty())
|
|
m_telemetryNames.append(s);
|
|
done = true;
|
|
}
|
|
else if (m_message[i] == ',')
|
|
{
|
|
if (!s.isEmpty())
|
|
m_telemetryNames.append(s);
|
|
i++;
|
|
s = "";
|
|
}
|
|
else
|
|
s.append(m_message[i++]);
|
|
}
|
|
}
|
|
else if (m_message.startsWith("UNIT."))
|
|
{
|
|
bool done = false;
|
|
QString s("");
|
|
int i = 5;
|
|
while (!done)
|
|
{
|
|
if (i >= m_message.length())
|
|
{
|
|
if (!s.isEmpty())
|
|
m_telemetryLabels.append(s);
|
|
done = true;
|
|
}
|
|
else if (m_message[i] == ',')
|
|
{
|
|
if (!s.isEmpty())
|
|
m_telemetryLabels.append(s);
|
|
i++;
|
|
s = "";
|
|
}
|
|
else
|
|
s.append(m_message[i++]);
|
|
}
|
|
}
|
|
else if (m_message.startsWith("EQNS."))
|
|
{
|
|
bool done = false;
|
|
QString s("");
|
|
int i = 5;
|
|
QList <QString> telemetryCoefficients;
|
|
while (!done)
|
|
{
|
|
if (i >= m_message.length())
|
|
{
|
|
if (!s.isEmpty())
|
|
telemetryCoefficients.append(s);
|
|
done = true;
|
|
}
|
|
else if (m_message[i] == ',')
|
|
{
|
|
if (!s.isEmpty())
|
|
telemetryCoefficients.append(s);
|
|
i++;
|
|
s = "";
|
|
}
|
|
else
|
|
s.append(m_message[i++]);
|
|
}
|
|
m_hasTelemetryCoefficients = 0;
|
|
for (int j = 0; j < telemetryCoefficients.length() / 3; j++)
|
|
{
|
|
m_telemetryCoefficientsA[j] = telemetryCoefficients[j*3].toDouble();
|
|
m_telemetryCoefficientsB[j] = telemetryCoefficients[j*3+1].toDouble();
|
|
m_telemetryCoefficientsC[j] = telemetryCoefficients[j*3+2].toDouble();
|
|
m_hasTelemetryCoefficients++;
|
|
}
|
|
}
|
|
else if (m_message.startsWith("BITS."))
|
|
{
|
|
QString s("");
|
|
int i = 5;
|
|
for (int j = 0; j < 8; j++)
|
|
{
|
|
if (i >= m_message.length())
|
|
m_telemetryBitSense[j] = m_message[i] == '1';
|
|
else
|
|
m_telemetryBitSense[j] = true;
|
|
i++;
|
|
}
|
|
m_hasTelemetryBitSense = true;
|
|
m_telemetryProjectName = m_message.mid(i);
|
|
i += m_telemetryProjectName.length();
|
|
}
|
|
else
|
|
{
|
|
// Check for message number
|
|
QRegExp noRE("\\{([0-9]{1,5})$");
|
|
if (noRE.indexIn(m_message) >= 0)
|
|
{
|
|
m_messageNo = noRE.capturedTexts()[1];
|
|
m_message = m_message.left(m_message.length() - m_messageNo.length() - 1);
|
|
}
|
|
}
|
|
m_hasMessage = true;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool APRSPacket::parseTelemetry(QString& info, int& idx)
|
|
{
|
|
if (info[idx] == '#')
|
|
{
|
|
// Telemetry report
|
|
idx++;
|
|
if ((info[idx] == 'M') && (info[idx+1] == 'I') && (info[idx+2] == 'C'))
|
|
idx += 3;
|
|
else if (isdigit(info[idx].toLatin1()) && isdigit(info[idx+1].toLatin1()) && isdigit(info[idx+2].toLatin1()))
|
|
{
|
|
m_seqNo = info.mid(idx, 3).toInt();
|
|
m_hasSeqNo = true;
|
|
idx += 3;
|
|
}
|
|
else
|
|
return false;
|
|
|
|
if (info[idx] == ',')
|
|
idx++;
|
|
parseInt(info, idx, 3, m_a1, m_a1HasValue);
|
|
if (info[idx++] != ',')
|
|
return false;
|
|
parseInt(info, idx, 3, m_a2, m_a2HasValue);
|
|
if (info[idx++] != ',')
|
|
return false;
|
|
parseInt(info, idx, 3, m_a3, m_a3HasValue);
|
|
if (info[idx++] != ',')
|
|
return false;
|
|
parseInt(info, idx, 3, m_a4, m_a4HasValue);
|
|
if (info[idx++] != ',')
|
|
return false;
|
|
parseInt(info, idx, 3, m_a5, m_a5HasValue);
|
|
if (info[idx++] != ',')
|
|
return false;
|
|
for (int i = 0; i < 8; i++)
|
|
m_b[i] = info[idx++] == '1';
|
|
m_bHasValue = true;
|
|
|
|
m_telemetryComment = info.mid(idx);
|
|
idx += m_telemetryComment.length();
|
|
m_hasTelemetry = true;
|
|
return true;
|
|
}
|
|
else
|
|
return false;
|
|
}
|
|
|
|
// Mic-E Implementation by Peter Beckman KM4BBB github:ooglek
|
|
bool APRSPacket::parseMicE(QString& info, int& idx, QString& dest)
|
|
{
|
|
info = info.toLatin1();
|
|
// Mic-E Location data is encoded in the AX.25 Destination Address
|
|
if (dest.length() < 6) {
|
|
qDebug() << "APRSPacket::parseMicE: Destination invalid length " << dest;
|
|
return false;
|
|
}
|
|
|
|
// Mic-E Information data is 8 bytes minimum, 13-14 with altitude
|
|
if (info.length() < idx+8) {
|
|
qDebug() << "APRSPacket::parseMicE: Information Data invalid length " << info;
|
|
return false;
|
|
}
|
|
|
|
QString latDigits = "";
|
|
QString messageBits = "";
|
|
int messageType = 0; // 0 = Standard, 1 = Custom
|
|
int longitudeOffset = 0;
|
|
// Assume South & East, as North & West are encoded using consecutive Characters, easier and shorter to code
|
|
float latitudeDirection = -1; // South
|
|
float longitudeDirection = 1; // East
|
|
|
|
QHash<QString, QString> messageTypeLookup = {
|
|
{"111", "Off Duty"},
|
|
{"110", "En Route"},
|
|
{"101", "In Service"},
|
|
{"100", "Returning"},
|
|
{"011", "Committed"},
|
|
{"010", "Special"},
|
|
{"001", "Priority"},
|
|
{"000", "Emergency"}
|
|
};
|
|
|
|
QRegularExpression re("^[A-LP-Z0-9]{3}[L-Z0-9]{3}.?$"); // 6-7 bytes
|
|
if (re.match(dest).hasMatch()) {
|
|
m_comment = "Mic-E";
|
|
for (int i = 0; i < 6; i++) {
|
|
int charInt = charToIntAscii(dest, i);
|
|
if (inRange(48, 57, charInt)) {
|
|
latDigits.append(QString::number(charInt % 48));
|
|
} else if (inRange(65, 74, charInt)) {
|
|
latDigits.append(QString::number(charInt % 65));
|
|
} else if (inRange(80, 89, charInt)) {
|
|
latDigits.append(QString::number(charInt % 80));
|
|
} else {
|
|
latDigits.append('0'); // Standard states "space" but we put a zero for math
|
|
}
|
|
|
|
// Message Type is encoded in 3 bits
|
|
if (i < 3) {
|
|
if (inRange(48, 57, charInt) || charInt == 76) { // 0-9 or L
|
|
messageBits.append('0');
|
|
} else if (inRange(80, 90, charInt)) { // P-Z, Standard
|
|
messageBits.append('1');
|
|
messageType = 0;
|
|
} else if (inRange(65, 75, charInt)) { // A-K, Custom
|
|
messageBits.append('1');
|
|
messageType = 1;
|
|
}
|
|
}
|
|
|
|
// Latitude Direction
|
|
if (i == 3 && inRange(80, 90, charInt)) {
|
|
latitudeDirection = 1; // North
|
|
}
|
|
|
|
// Longitude Offset
|
|
if (i == 4 && inRange(80, 90, charInt)) {
|
|
longitudeOffset = 100;
|
|
}
|
|
|
|
// Longitude Direction
|
|
if (i == 5 && inRange(80, 90, charInt)) {
|
|
longitudeDirection = -1; // West
|
|
}
|
|
}
|
|
|
|
if (messageTypeLookup.find(messageBits) != messageTypeLookup.end()) {
|
|
m_status = messageTypeLookup[messageBits];
|
|
if (messageType == 1) {
|
|
m_status.append(" (custom)");
|
|
}
|
|
m_hasStatus = true;
|
|
}
|
|
m_latitude = (latDigits.mid(0, 2).toFloat() + latDigits.mid(2, 2).toFloat()/60.00 + latDigits.mid(4, 2).toFloat()/60.0/100.0) * latitudeDirection;
|
|
m_hasPosition = true;
|
|
} else {
|
|
qDebug() << "APRSPacket::parseMicE: Destination invalid regexp match " << dest;
|
|
return false;
|
|
}
|
|
|
|
// Mic-E Data is encoded in ASCII Characters
|
|
if (inRange(38, 127, charToIntAscii(info, idx)) // 0: Longitude Degrees, 0-360
|
|
&& inRange(38, 97, charToIntAscii(info, idx+1)) // 1: Longitude Minutes, 0-59
|
|
&& inRange(28, 127, charToIntAscii(info, idx+2)) // 2: Longitude Hundreths of a minute, 0-99
|
|
&& inRange(28, 127, charToIntAscii(info, idx+3)) // 3: Speed (tens), 0-800
|
|
&& inRange(28, 125, charToIntAscii(info, idx+4)) // 4: Speed (ones), 0-9, and Course (hundreds), {0, 100, 200, 300}
|
|
&& inRange(28, 127, charToIntAscii(info, idx+5)) // 5: Course, 0-99 degrees
|
|
)
|
|
{
|
|
// Longitude; Degrees plus offset encoded in the AX.25 Destination
|
|
// Destination Byte 5, ASCII P through Z indicates an offset of +100
|
|
int deg = (charToIntAscii(info, idx) - 28) + longitudeOffset;
|
|
if (inRange(180, 189, deg))
|
|
deg -= 80;
|
|
if (inRange(190, 199, deg))
|
|
deg -= 190;
|
|
|
|
int min = (charToIntAscii(info, idx+1) - 28) % 60;
|
|
int hundreths = charToIntAscii(info, idx+2);
|
|
|
|
// Course and Speed
|
|
// Speed (SP+28, units of 10) can use two encodings: ASCII 28-47 and 108-127 are the same
|
|
// Speed & Course (DC+28, Speed units of 1, Course units of 100 e.g. 0, 100, 200, 300) uses two encodings
|
|
int speed = ((charToIntAscii(info, idx+3) - 28) * 10) % 800; // Speed in 10 kts units
|
|
float decoded_speed_course = (float)(charToIntAscii(info, idx+4) - 28) / 10.0;
|
|
speed += floor(decoded_speed_course); // Speed in 1 kt units, added to above
|
|
int course = (((charToIntAscii(info, idx+4) - 28) % 10) * 100) % 400;
|
|
course += charToIntAscii(info, idx+5) - 28;
|
|
|
|
m_longitude = (((float)deg) + min/60.00 + hundreths/60.0/100.0) * longitudeDirection;
|
|
m_hasPosition = true;
|
|
m_course = course;
|
|
m_speed = speed;
|
|
m_hasCourseAndSpeed = true;
|
|
} else {
|
|
qDebug() << "APRSPacket::parseMicE: Information Data invalid ASCII range " << info;
|
|
return false;
|
|
}
|
|
|
|
// 6: Symbol Code
|
|
// 7: Symbol Table ID, / = standard, \ = alternate, "," = Telemetry
|
|
if (inRange(33, 126, charToIntAscii(info, idx+6))
|
|
&& (charToIntAscii(info, idx+7) == 47 || charToIntAscii(info, idx+7) == 92)
|
|
)
|
|
{
|
|
m_symbolTable = info[idx+7].toLatin1();
|
|
m_symbolCode = info[idx+6].toLatin1();
|
|
m_hasSymbol = true;
|
|
}
|
|
|
|
// Altitude, encoded in Status Message in meters, converted to feet, above -10000 meters
|
|
// e.g. "4T} -> Doublequote is 34, digit 4 is 52, Capital T is 84. Subtract 33 from each -> 1, 19, 51
|
|
// Multiply -> (1 * 91 * 91) + (19 * 91) + (51 * 1) - 10000 = 61 meters Mean Sea Level (MSL)
|
|
// ASCII Integer Character Range is 33 to 127
|
|
float altitude = -10000;
|
|
|
|
// 4-5 bytes, we only need the 3 to get altitude, e.g. "4T}
|
|
// Some HTs prefix the altitude with ']' or '>', so we match that optionally but ignore it
|
|
QRegularExpression re_mice_altitude("[\\]>]?(.{3})}");
|
|
QRegularExpressionMatch altitude_str = re_mice_altitude.match(info);
|
|
if (altitude_str.hasMatch()) {
|
|
QList<int> micEAltitudeMultipliers = {91 * 91, 91, 1};
|
|
|
|
for (int i = 0; i < 3; i++) {
|
|
QString altmatch = altitude_str.captured(1);
|
|
int charInt = charToIntAscii(altmatch, i);
|
|
if (!inRange(33, 127, charInt)) {
|
|
qDebug() << "APRSPacket::parseMicE: Invalid Altitude Byte Found pos:" << QString::number(i) << " ascii int:" << QString::number(charInt);
|
|
break;
|
|
}
|
|
altitude += (float)(charInt - 33) * micEAltitudeMultipliers.at(i);
|
|
}
|
|
|
|
// Assume that the Mic-E transmission is Above Ground Level
|
|
if (altitude >= 0) {
|
|
m_altitudeFt = std::round(Units::metresToFeet(altitude));
|
|
m_hasAltitude = true;
|
|
}
|
|
}
|
|
|
|
// Mic-E Text Format
|
|
if (info.length() >= 9) {
|
|
QString mice_status = info.mid(9);
|
|
if (altitude_str.hasMatch() && mice_status.indexOf(altitude_str.captured(0)) != -1) {
|
|
mice_status.replace(altitude_str.captured(0), "");
|
|
}
|
|
|
|
m_comment += " " + mice_status;
|
|
// TODO Implement the APRS 1.2 Mic-E Text Format http://www.aprs.org/aprs12/mic-e-types.txt
|
|
// Consider the Kenwood leading characters
|
|
}
|
|
|
|
// TODO Implement Mic-E Telemetry Data -- need to modify regexp for the Symbol Table Identifier to include comma (,)
|
|
|
|
return true;
|
|
}
|
|
|