meshtastic: consolidate LoRa/Meshtastic demod, auto-profile, decode tree, and dechirp replay improvements

2026-06-05 15:34:57 -04:00 · 2026-03-05 16:52:12 +01:00
parent 8b42b9e112
commit 40ea5d096f
67 changed files with 22453 additions and 23 deletions
@@ -0,0 +1,181 @@
+///////////////////////////////////////////////////////////////////////////////////
+// Copyright (C) 2020 Edouard Griffiths, F4EXB <f4exb06@gmail.com>               //
+//                                                                               //
+// 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 as version 3 of the License, 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 V3 for more details.                               //
+//                                                                               //
+// You should have received a copy of the GNU General Public License             //
+// along with this program. If not, see <http://www.gnu.org/licenses/>.          //
+///////////////////////////////////////////////////////////////////////////////////
+
+#include <QDebug>
+
+#include "meshtasticmodencoder.h"
+#include "meshtasticmodencodertty.h"
+#include "meshtasticmodencoderascii.h"
+#include "meshtasticmodencoderlora.h"
+#include "meshtasticmodencoderft.h"
+#include "meshtasticpacket.h"
+
+MeshtasticModEncoder::MeshtasticModEncoder() :
+    m_codingScheme(MeshtasticModSettings::CodingTTY),
+    m_nbSymbolBits(5),
+    m_nbParityBits(1),
+    m_hasCRC(true),
+    m_hasHeader(true)
+{}
+
+MeshtasticModEncoder::~MeshtasticModEncoder()
+{}
+
+void MeshtasticModEncoder::setNbSymbolBits(unsigned int spreadFactor, unsigned int deBits)
+{
+    m_spreadFactor = spreadFactor;
+
+    if (deBits >= spreadFactor) {
+        m_deBits = m_spreadFactor - 1;
+    } else {
+        m_deBits = deBits;
+    }
+
+    m_nbSymbolBits = m_spreadFactor - m_deBits;
+}
+
+void MeshtasticModEncoder::encode(MeshtasticModSettings settings, std::vector<unsigned short>& symbols)
+{
+    if (settings.m_codingScheme == MeshtasticModSettings::CodingFT)
+    {
+        MeshtasticModEncoderFT::encodeMsg(
+            settings.m_myCall,
+            settings.m_urCall,
+            settings.m_myLoc,
+            settings.m_myRpt,
+            settings.m_textMessage,
+            settings.m_messageType,
+            m_nbSymbolBits,
+            symbols
+        );
+    }
+    else
+    {
+        if (settings.m_messageType == MeshtasticModSettings::MessageBytes) {
+            encodeBytes(settings.m_bytesMessage, symbols);
+        } else if (settings.m_messageType == MeshtasticModSettings::MessageBeacon) {
+            encodeString(settings.m_beaconMessage, symbols);
+        } else if (settings.m_messageType == MeshtasticModSettings::MessageCQ) {
+            encodeString(settings.m_cqMessage, symbols);
+        } else if (settings.m_messageType == MeshtasticModSettings::MessageReply) {
+            encodeString(settings.m_replyMessage, symbols);
+        } else if (settings.m_messageType == MeshtasticModSettings::MessageReport) {
+            encodeString(settings.m_reportMessage, symbols);
+        } else if (settings.m_messageType == MeshtasticModSettings::MessageReplyReport) {
+            encodeString(settings.m_replyReportMessage, symbols);
+        } else if (settings.m_messageType == MeshtasticModSettings::MessageRRR) {
+            encodeString(settings.m_rrrMessage, symbols);
+        } else if (settings.m_messageType == MeshtasticModSettings::Message73) {
+            encodeString(settings.m_73Message, symbols);
+        } else if (settings.m_messageType == MeshtasticModSettings::MessageQSOText) {
+            encodeString(settings.m_qsoTextMessage, symbols);
+        } else if (settings.m_messageType == MeshtasticModSettings::MessageText) {
+            encodeString(settings.m_textMessage, symbols);
+        }
+    }
+}
+
+void MeshtasticModEncoder::encodeString(const QString& str, std::vector<unsigned short>& symbols)
+{
+    switch (m_codingScheme)
+    {
+    case MeshtasticModSettings::CodingTTY:
+        if (m_nbSymbolBits == 5) {
+            MeshtasticModEncoderTTY::encodeString(str, symbols);
+        }
+        break;
+    case MeshtasticModSettings::CodingASCII:
+        if (m_nbSymbolBits == 7) {
+            MeshtasticModEncoderASCII::encodeString(str, symbols);
+        }
+        break;
+    case MeshtasticModSettings::CodingLoRa:
+        if (m_nbSymbolBits >= 5)
+        {
+            QByteArray bytes;
+            QString summary;
+            QString error;
+
+            if (Meshtastic::Packet::isCommand(str))
+            {
+                if (!Meshtastic::Packet::buildFrameFromCommand(str, bytes, summary, error))
+                {
+                    qWarning() << "MeshtasticModEncoder::encodeString: Meshtastic command error:" << error;
+                    return;
+                }
+
+                qInfo() << "MeshtasticModEncoder::encodeString:" << summary;
+            }
+            else
+            {
+                bytes = str.toUtf8();
+            }
+
+            encodeBytesLoRa(bytes, symbols);
+        }
+        break;
+    default:
+        break;
+    }
+}
+
+void MeshtasticModEncoder::encodeBytes(const QByteArray& bytes, std::vector<unsigned short>& symbols)
+{
+    switch (m_codingScheme)
+    {
+    case MeshtasticModSettings::CodingLoRa:
+    {
+        QByteArray payload(bytes);
+
+        if (Meshtastic::Packet::isCommand(QString::fromUtf8(bytes)))
+        {
+            QString summary;
+            QString error;
+
+            if (!Meshtastic::Packet::buildFrameFromCommand(QString::fromUtf8(bytes), payload, summary, error))
+            {
+                qWarning() << "MeshtasticModEncoder::encodeBytes: Meshtastic command error:" << error;
+                return;
+            }
+
+            qInfo() << "MeshtasticModEncoder::encodeBytes:" << summary;
+        }
+
+        encodeBytesLoRa(payload, symbols);
+        break;
+    }
+    default:
+        break;
+    };
+}
+
+void MeshtasticModEncoder::encodeBytesLoRa(const QByteArray& bytes, std::vector<unsigned short>& symbols)
+{
+    QByteArray payload(bytes);
+
+    if ((payload.size() + (m_hasCRC ? 2 : 0)) > 255)
+    {
+        qWarning() << "MeshtasticModEncoder::encodeBytesLoRa: payload too large:" << payload.size();
+        return;
+    }
+
+    if (m_hasCRC) {
+        MeshtasticModEncoderLoRa::addChecksum(payload);
+    }
+
+    MeshtasticModEncoderLoRa::encodeBytes(payload, symbols, m_nbSymbolBits, m_hasHeader, m_hasCRC, m_nbParityBits);
+}