ChirpChat demod: implemented FT decoding

ft8/ft8.cpp

@@ -2566,8 +2566,14 @@ int FT8::decode(const float ll174[], int a174[], FT8Params& _params, int use_osd
         if (OSD::check_crc(a174)) {
             // success!
             return 1;
+        } else {
+            comment = "CRC fail";
         }
     }
+    else
+    {
+        comment = "LDPC fail";
+    }
 
     if (use_osd && _params.osd_depth >= 0 && ldpc_ok >= _params.osd_ldpc_thresh)
     {
@@ -2582,6 +2588,10 @@ int FT8::decode(const float ll174[], int a174[], FT8Params& _params, int use_osd
             OSD::ldpc_encode(oplain, a174);
             return 1;
         }
+        else
+        {
+            comment = "OSD fail";
+        }
     }
 
     return 0;

ft8/packing.cpp

@@ -934,11 +934,11 @@ bool Packing::packfree(int a77[], const std::string& msg)
     return true;
 }
 
-void Packing::pack1(int a77[], int c28_1, int c28_2, int g15, int report)
+void Packing::pack1(int a77[], int c28_1, int c28_2, int g15, int reply)
 {
     pa64(a77, 0, 28, c28_1);
     pa64(a77, 28+1, 28, c28_2);
-    a77[28+1+28+1] = report;
+    a77[28+1+28+1] = reply;
     pa64(a77, 28+1+28+2, 15, g15);
     pa64(a77, 28+1+28+2+15, 3, 1);
 }

ft8/packing.h

@@ -40,7 +40,7 @@ public:
     static bool packcall_std(int& c28, const std::string& callstr);
     static bool packgrid(int& g15, const std::string& locstr);
     static bool packfree(int a77[], const std::string& msg);
-    static void pack1(int a77[], int c28_1, int c28_2, int g15, int report);
+    static void pack1(int a77[], int c28_1, int c28_2, int g15, int reply);
 
 private:
     static int ihashcall(std::string call, int m);

plugins/channelrx/demodchirpchat/CMakeLists.txt

@@ -1,5 +1,10 @@
 project(chirpchat)
 
+if (FT8_SUPPORT)
+    set(chirpchatmod_FT8_LIB ft8)
+    set(chirpchatmod_FT8_INCLUDE ${CMAKE_SOURCE_DIR}/ft8)
+endif()
+
 set(chirpchat_SOURCES
 	chirpchatdemod.cpp
 	chirpchatdemodsettings.cpp
@@ -10,6 +15,7 @@ set(chirpchat_SOURCES
 	chirpchatdemoddecodertty.cpp
     chirpchatdemoddecoderascii.cpp
     chirpchatdemoddecoderlora.cpp
+    chirpchatdemoddecoderft.cpp
 	chirpchatdemodmsg.cpp
 )
 
@@ -22,12 +28,14 @@ set(chirpchat_HEADERS
 	chirpchatdemoddecodertty.h
     chirpchatdemoddecoderascii.h
     chirpchatdemoddecoderlora.h
+    chirpchatdemoddecoderft.h
 	chirpchatdemodmsg.h
 	chirpchatplugin.h
 )
 
 include_directories(
     ${CMAKE_SOURCE_DIR}/swagger/sdrangel/code/qt5/client
+    ${chirpchatmod_FT8_INCLUDE}
 )
 
 if(NOT SERVER_MODE)
@@ -61,6 +69,7 @@ target_link_libraries(${TARGET_NAME}
 	sdrbase
 	${TARGET_LIB_GUI}
     swagger
+    ${chirpchatmod_FT8_LIB}
 )
 
 install(TARGETS ${TARGET_NAME} DESTINATION ${INSTALL_FOLDER})

plugins/channelrx/demodchirpchat/chirpchatdemod.cpp

@@ -318,6 +318,29 @@ bool ChirpChatDemod::handleMessage(const Message& cmd)
 
         return true;
     }
+    else if (ChirpChatDemodMsg::MsgReportDecodeFT::match(cmd))
+    {
+        qDebug() << "ChirpChatDemod::handleMessage: MsgReportDecodeFT";
+        ChirpChatDemodMsg::MsgReportDecodeFT& msg = (ChirpChatDemodMsg::MsgReportDecodeFT&) cmd;
+        m_lastMsgSignalDb = msg.getSingalDb();
+        m_lastMsgNoiseDb = msg.getNoiseDb();
+        m_lastMsgSyncWord = msg.getSyncWord();
+        m_lastMsgTimestamp = msg.getMsgTimestamp();
+        m_lastMsgString = msg.getMessage(); // for now we do not handle message components (call1, ...)
+
+        if (m_settings.m_sendViaUDP)
+        {
+            const QByteArray& byteArray = m_lastMsgString.toUtf8();
+            const uint8_t *bytes = reinterpret_cast<const uint8_t*>(byteArray.data());
+            m_udpSink.writeUnbuffered(bytes, byteArray.size());
+        }
+
+        if (getMessageQueueToGUI()) {
+            getMessageQueueToGUI()->push(new ChirpChatDemodMsg::MsgReportDecodeFT(msg)); // make a copy
+        }
+
+        return true;
+    }
     else if (DSPSignalNotification::match(cmd))
     {
         DSPSignalNotification& notif = (DSPSignalNotification&) cmd;

plugins/channelrx/demodchirpchat/chirpchatdemoddecoder.cpp

@@ -21,6 +21,7 @@
 #include "chirpchatdemoddecodertty.h"
 #include "chirpchatdemoddecoderascii.h"
 #include "chirpchatdemoddecoderlora.h"
+#include "chirpchatdemoddecoderft.h"
 #include "chirpchatdemodmsg.h"
 
 ChirpChatDemodDecoder::ChirpChatDemodDecoder() :
@@ -60,7 +61,7 @@ void ChirpChatDemodDecoder::decodeSymbols(const std::vector<unsigned short>& sym
         }
         break;
     case ChirpChatDemodSettings::CodingASCII:
-        if (m_nbSymbolBits == 5) {
+        if (m_nbSymbolBits == 7) {
             ChirpChatDemodDecoderASCII::decodeSymbols(symbols, str);
         }
         break;
@@ -106,6 +107,33 @@ void ChirpChatDemodDecoder::decodeSymbols(const std::vector<unsigned short>& sym
     }
 }
 
+void ChirpChatDemodDecoder::decodeSymbols( //!< For FT coding scheme
+    const std::vector<std::vector<float>>& mags, // vector of symbols magnitudes
+    int nbSymbolBits, //!< number of bits per symbol
+    std::string& msg,     //!< formatted message
+    std::string& call1,   //!< 1st callsign or shorthand
+    std::string& call2,   //!< 2nd callsign
+    std::string& loc,     //!< locator, report or shorthand
+    bool& reply       //!< true if message is a reply report
+)
+{
+    if (m_codingScheme != ChirpChatDemodSettings::CodingFT) {
+        return;
+    }
+
+    ChirpChatDemodDecoderFT::decodeSymbols(
+        mags,
+        nbSymbolBits,
+        msg,
+        call1,
+        call2,
+        loc,
+        reply,
+        m_payloadParityStatus,
+        m_payloadCRCStatus
+    );
+}
+
 bool ChirpChatDemodDecoder::handleMessage(const Message& cmd)
 {
     if (ChirpChatDemodMsg::MsgDecodeSymbols::match(cmd))
@@ -145,7 +173,34 @@ bool ChirpChatDemodDecoder::handleMessage(const Message& cmd)
         }
         else if (m_codingScheme == ChirpChatDemodSettings::CodingFT)
         {
+            std::string fmsg, call1, call2, loc;
+            bool reply;
+            decodeSymbols(
+                msg.getMagnitudes(),
+                m_nbSymbolBits,
+                fmsg,
+                call1,
+                call2,
+                loc,
+                reply
+            );
 
+            if (m_outputMessageQueue)
+            {
+                ChirpChatDemodMsg::MsgReportDecodeFT *outputMsg = ChirpChatDemodMsg::MsgReportDecodeFT::create();
+                outputMsg->setSyncWord(msgSyncWord);
+                outputMsg->setSignalDb(msgSignalDb);
+                outputMsg->setNoiseDb(msgNoiseDb);
+                outputMsg->setMsgTimestamp(msgTimestamp);
+                outputMsg->setMessage(QString(fmsg.c_str()));
+                outputMsg->setCall1(QString(call1.c_str()));
+                outputMsg->setCall2(QString(call2.c_str()));
+                outputMsg->setLoc(QString(loc.c_str()));
+                outputMsg->setReply(reply);
+                outputMsg->setPayloadParityStatus(getPayloadParityStatus());
+                outputMsg->setPayloadCRCStatus(getPayloadCRCStatus());
+                m_outputMessageQueue->push(outputMsg);
+            }
         }
         else
         {

plugins/channelrx/demodchirpchat/chirpchatdemoddecoder.h

@@ -40,8 +40,22 @@ public:
     void setLoRaHasHeader(bool hasHeader) { m_hasHeader = hasHeader; }
     void setLoRaHasCRC(bool hasCRC) { m_hasCRC = hasCRC; }
     void setLoRaPacketLength(unsigned int packetLength) { m_packetLength = packetLength; }
+    MessageQueue *getInputMessageQueue() { return &m_inputMessageQueue; }
+    void setOutputMessageQueue(MessageQueue *messageQueue) { m_outputMessageQueue = messageQueue; }
+
+private:
+    bool handleMessage(const Message& cmd);
     void decodeSymbols(const std::vector<unsigned short>& symbols, QString& str);      //!< For ASCII and TTY
     void decodeSymbols(const std::vector<unsigned short>& symbols, QByteArray& bytes); //!< For raw bytes (original LoRa)
+    void decodeSymbols( //!< For FT coding scheme
+        const std::vector<std::vector<float>>& mags, // vector of symbols magnitudes
+        int nbSymbolBits, //!< number of bits per symbol
+        std::string& msg,     //!< formatted message
+        std::string& call1,   //!< 1st callsign or shorthand
+        std::string& call2,   //!< 2nd callsign
+        std::string& loc,     //!< locator, report or shorthand
+        bool& reply       //!< true if message is a reply report
+    );
     unsigned int getNbParityBits() const { return m_nbParityBits; }
     unsigned int getPacketLength() const { return m_packetLength; }
     bool getHasCRC() const { return m_hasCRC; }
@@ -52,11 +66,6 @@ public:
     bool getHeaderCRCStatus() const { return m_headerCRCStatus; }
     int getPayloadParityStatus() const { return m_payloadParityStatus; }
     bool getPayloadCRCStatus() const { return m_payloadCRCStatus; }
-    MessageQueue *getInputMessageQueue() { return &m_inputMessageQueue; }
-    void setOutputMessageQueue(MessageQueue *messageQueue) { m_outputMessageQueue = messageQueue; }
-
-private:
-    bool handleMessage(const Message& cmd);
 
     ChirpChatDemodSettings::CodingScheme m_codingScheme;
     unsigned int m_spreadFactor;

plugins/channelrx/demodchirpchat/chirpchatdemoddecoderft.cpp

@@ -0,0 +1,111 @@
+///////////////////////////////////////////////////////////////////////////////////
+// Copyright (C) 2024 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 "chirpchatdemodsettings.h"
+#include "chirpchatdemoddecoderft.h"
+
+#ifndef HAS_FT8
+void ChirpChatDemodDecoderFT::decodeSymbols(
+    const std::vector<std::vector<float>>& mags, // vector of symbols magnitudes
+    int nbSymbolBits, //!< number of bits per symbol
+    QString& msg,     //!< formatted message
+    QString& call1,   //!< 1st callsign or shorthand
+    QString& call2,   //!< 2nd callsign
+    QString& loc,     //!< locator, report or shorthand
+    bool& reply       //!< true if message is a reply report
+)
+{
+    qWarning("ChirpChatDemodDecoderFT::decodeSymbols: not implemented");
+}
+#else
+
+#include "ft8.h"
+#include "packing.h"
+
+void ChirpChatDemodDecoderFT::decodeSymbols(
+    const std::vector<std::vector<float>>& mags, // vector of symbols magnitudes
+    int nbSymbolBits, //!< number of bits per symbol
+    std::string& msg,     //!< formatted message
+    std::string& call1,   //!< 1st callsign or shorthand
+    std::string& call2,   //!< 2nd callsign
+    std::string& loc,     //!< locator, report or shorthand
+    bool& reply,          //!< true if message is a reply report
+    int& payloadParityStatus,
+    bool& payloadCRCStatus
+)
+{
+    if (mags.size()*nbSymbolBits < 174)
+    {
+        qWarning("ChirpChatDemodDecoderFT::decodeSymbols: insufficient number of symbols for FT payload");
+        return;
+    }
+
+    float *lls = new float[mags.size()*nbSymbolBits]; // bits log likelihoods (>0 for 0, <0 for 1)
+    std::fill(lls, lls+mags.size()*nbSymbolBits, 0.0);
+    FT8::FT8Params params;
+    FT8::FT8::soft_decode_mags(params, mags, nbSymbolBits, lls);
+    int r174[174];
+    std::string comments;
+    payloadParityStatus = (int) ChirpChatDemodSettings::ParityOK;
+    payloadCRCStatus = false;
+
+    if (FT8::FT8::decode(lls, r174, params, 0, comments) == 0)
+    {
+        if (comments == "LDPC fail")
+        {
+            qWarning("ChirpChatDemodDecoderFT::decodeSymbols: LDPC failed");
+            payloadParityStatus = (int) ChirpChatDemodSettings::ParityError;
+        }
+        else if (comments == "OSD fail")
+        {
+            qWarning("ChirpChatDemodDecoderFT::decodeSymbols: OSD failed");
+            payloadParityStatus = (int) ChirpChatDemodSettings::ParityError;
+        }
+        else if (comments == "CRC fail")
+        {
+            qWarning("ChirpChatDemodDecoderFT::decodeSymbols: CRC failed");
+        }
+        else
+        {
+            qWarning("ChirpChatDemodDecoderFT::decodeSymbols: decode failed for unknown reason");
+            payloadParityStatus = (int) ChirpChatDemodSettings::ParityUndefined;
+        }
+
+        return;
+    }
+
+    payloadCRCStatus = true;
+    FT8::Packing packing;
+    std::string msgType;
+    msg = packing.unpack(r174, call1, call2, loc, msgType);
+    reply = false;
+
+    if ((msgType == "0.3") || (msgType == "0.3")) {
+        reply = r174[56] != 0;
+    }
+    if ((msgType == "1") || (msgType == "2")) {
+        reply = r174[58] != 0;
+    }
+    if ((msgType == "3")) {
+        reply = r174[57] != 0;
+    }
+    if ((msgType == "5")) {
+        reply = r174[34] != 0;
+    }
+}
+
+#endif // HAS_FT8

plugins/channelrx/demodchirpchat/chirpchatdemoddecoderft.h

@@ -0,0 +1,49 @@
+///////////////////////////////////////////////////////////////////////////////////
+// Copyright (C) 2024 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/>.          //
+///////////////////////////////////////////////////////////////////////////////////
+
+#ifndef INCLUDE_CHIRPCHATDEMODDECODERFT_H
+#define INCLUDE_CHIRPCHATDEMODDECODERFT_H
+
+#include <vector>
+#include <string>
+
+class ChirpChatDemodDecoderFT
+{
+public:
+    enum ParityStatus
+    {
+        ParityUndefined,
+        ParityError,
+        ParityCorrected,
+        ParityOK
+    };
+
+    static void decodeSymbols(
+        const std::vector<std::vector<float>>& mags, // vector of symbols magnitudes
+        int nbSymbolBits, //!< number of bits per symbol
+        std::string& msg,     //!< formatted message
+        std::string& call1,   //!< 1st callsign or shorthand
+        std::string& call2,   //!< 2nd callsign
+        std::string& loc,     //!< locator, report or shorthand
+        bool& reply ,         //!< true if message is a reply report
+        int& payloadParityStatus,
+        bool& payloadCRCStatus
+    );
+};
+
+
+#endif

plugins/channelrx/demodchirpchat/chirpchatdemoddecoderlora.cpp

@@ -17,6 +17,7 @@
 // along with this program. If not, see <http://www.gnu.org/licenses/>.          //
 ///////////////////////////////////////////////////////////////////////////////////
 
+#include "chirpchatdemodsettings.h"
 #include "chirpchatdemoddecoderlora.h"
 
 void ChirpChatDemodDecoderLoRa::decodeHeader(
@@ -71,14 +72,14 @@ void ChirpChatDemodDecoderLoRa::decodeHeader(
 
     if (bad)
     {
-        headerParityStatus = (int) ParityError;
+        headerParityStatus = (int) ChirpChatDemodSettings::ParityError;
     }
     else
     {
         if (error) {
-            headerParityStatus = (int) ParityCorrected;
+            headerParityStatus = (int) ChirpChatDemodSettings::ParityCorrected;
         } else {
-            headerParityStatus = (int) ParityOK;
+            headerParityStatus = (int) ChirpChatDemodSettings::ParityOK;
         }
 
         if (bytes[2] != 0) {
@@ -300,11 +301,11 @@ void ChirpChatDemodDecoderLoRa::decodeBytes(
     }
 
     if (bad) {
-        payloadParityStatus = (int) ParityError;
+        payloadParityStatus = (int) ChirpChatDemodSettings::ParityError;
     } else if (error) {
-        payloadParityStatus = (int) ParityCorrected;
+        payloadParityStatus = (int) ChirpChatDemodSettings::ParityCorrected;
     } else {
-        payloadParityStatus = (int) ParityOK;
+        payloadParityStatus = (int) ChirpChatDemodSettings::ParityOK;
     }
 
     // finalization:

plugins/channelrx/demodchirpchat/chirpchatdemoddecoderlora.h

@@ -26,14 +26,6 @@
 class ChirpChatDemodDecoderLoRa
 {
 public:
-    enum ParityStatus
-    {
-        ParityUndefined,
-        ParityError,
-        ParityCorrected,
-        ParityOK
-    };
-
     static void decodeBytes(
         QByteArray& bytes,
         const std::vector<unsigned short>& inSymbols,

plugins/channelrx/demodchirpchat/chirpchatdemodgui.cpp

@@ -115,8 +115,16 @@ bool ChirpChatDemodGUI::handleMessage(const Message& message)
     else if (ChirpChatDemodMsg::MsgReportDecodeString::match(message))
     {
         if ((m_settings.m_codingScheme == ChirpChatDemodSettings::CodingASCII)
-         || (m_settings.m_codingScheme == ChirpChatDemodSettings::CodingTTY)) {
+        || (m_settings.m_codingScheme == ChirpChatDemodSettings::CodingTTY)) {
-             showTextMessage(message);
+            showTextMessage(message);
+        }
+
+        return true;
+    }
+    else if (ChirpChatDemodMsg::MsgReportDecodeFT::match(message))
+    {
+        if (m_settings.m_codingScheme == ChirpChatDemodSettings::CodingFT) {
+            showFTMessage(message);
         }
 
         return true;
@@ -544,11 +552,11 @@ void ChirpChatDemodGUI::displaySquelch()
 
 void ChirpChatDemodGUI::displayLoRaStatus(int headerParityStatus, bool headerCRCStatus, int payloadParityStatus, bool payloadCRCStatus)
 {
-    if (m_settings.m_hasHeader && (headerParityStatus == (int) ParityOK)) {
+    if (m_settings.m_hasHeader && (headerParityStatus == (int) ChirpChatDemodSettings::ParityOK)) {
         ui->headerHammingStatus->setStyleSheet("QLabel { background-color : green; }");
-    } else if (m_settings.m_hasHeader && (headerParityStatus == (int) ParityError)) {
+    } else if (m_settings.m_hasHeader && (headerParityStatus == (int) ChirpChatDemodSettings::ParityError)) {
         ui->headerHammingStatus->setStyleSheet("QLabel { background-color : red; }");
-    } else if (m_settings.m_hasHeader && (headerParityStatus == (int) ParityCorrected)) {
+    } else if (m_settings.m_hasHeader && (headerParityStatus == (int) ChirpChatDemodSettings::ParityCorrected)) {
         ui->headerHammingStatus->setStyleSheet("QLabel { background-color : blue; }");
     } else {
         ui->headerHammingStatus->setStyleSheet("QLabel { background:rgb(79,79,79); }");
@@ -562,11 +570,11 @@ void ChirpChatDemodGUI::displayLoRaStatus(int headerParityStatus, bool headerCRC
         ui->headerCRCStatus->setStyleSheet("QLabel { background:rgb(79,79,79); }");
     }
 
-    if (payloadParityStatus == (int) ParityOK) {
+    if (payloadParityStatus == (int) ChirpChatDemodSettings::ParityOK) {
         ui->payloadFECStatus->setStyleSheet("QLabel { background-color : green; }");
-    } else if (payloadParityStatus == (int) ParityError) {
+    } else if (payloadParityStatus == (int) ChirpChatDemodSettings::ParityError) {
         ui->payloadFECStatus->setStyleSheet("QLabel { background-color : red; }");
-    } else if (payloadParityStatus == (int) ParityCorrected) {
+    } else if (payloadParityStatus == (int) ChirpChatDemodSettings::ParityCorrected) {
         ui->payloadFECStatus->setStyleSheet("QLabel { background-color : blue; }");
     } else {
         ui->payloadFECStatus->setStyleSheet("QLabel { background:rgb(79,79,79); }");
@@ -589,6 +597,25 @@ void ChirpChatDemodGUI::resetLoRaStatus()
     ui->nbCodewordsText->setText("---");
 }
 
+void ChirpChatDemodGUI::displayFTStatus(int payloadParityStatus, bool payloadCRCStatus)
+{
+    if (payloadParityStatus == (int) ChirpChatDemodSettings::ParityOK) {
+        ui->payloadFECStatus->setStyleSheet("QLabel { background-color : green; }");
+    } else if (payloadParityStatus == (int) ChirpChatDemodSettings::ParityError) {
+        ui->payloadFECStatus->setStyleSheet("QLabel { background-color : red; }");
+    } else if (payloadParityStatus == (int) ChirpChatDemodSettings::ParityCorrected) {
+        ui->payloadFECStatus->setStyleSheet("QLabel { background-color : blue; }");
+    } else {
+        ui->payloadFECStatus->setStyleSheet("QLabel { background:rgb(79,79,79); }");
+    }
+
+    if (payloadCRCStatus) {
+        ui->payloadCRCStatus->setStyleSheet("QLabel { background-color : green; }");
+    } else {
+        ui->payloadCRCStatus->setStyleSheet("QLabel { background-color : red; }");
+    }
+}
+
 void ChirpChatDemodGUI::setBandwidths()
 {
     int maxBandwidth = m_basebandSampleRate/ChirpChatDemodSettings::oversampling;
@@ -644,7 +671,7 @@ void ChirpChatDemodGUI::showLoRaMessage(const Message& message)
             .arg(msg.getHeaderCRCStatus() ? "ok" : "err");
 
         displayStatus(loRaStatus);
-        displayLoRaStatus(msg.getHeaderParityStatus(), msg.getHeaderCRCStatus(), (int) ParityUndefined, true);
+        displayLoRaStatus(msg.getHeaderParityStatus(), msg.getHeaderCRCStatus(), (int) ChirpChatDemodSettings::ParityUndefined, true);
         ui->payloadCRCStatus->setStyleSheet("QLabel { background:rgb(79,79,79); }"); // reset payload CRC
     }
     else
@@ -694,6 +721,27 @@ void ChirpChatDemodGUI::showTextMessage(const Message& message)
     displayText(msg.getString());
 }
 
+void ChirpChatDemodGUI::showFTMessage(const Message& message)
+{
+    const ChirpChatDemodMsg::MsgReportDecodeFT& msg = (ChirpChatDemodMsg::MsgReportDecodeFT&) message;
+
+    QDateTime dt = QDateTime::currentDateTime();
+    QString dateStr = dt.toString("HH:mm:ss");
+    ui->sText->setText(tr("%1").arg(msg.getSingalDb(), 0, 'f', 1));
+    ui->snrText->setText(tr("%1").arg(msg.getSingalDb() - msg.getNoiseDb(), 0, 'f', 1));
+
+    QString status = tr("%1 S:%2 SN:%3 FEC:%4 CRC:%5")
+        .arg(dateStr)
+        .arg(msg.getSingalDb(), 0, 'f', 1)
+        .arg(msg.getSingalDb() - msg.getNoiseDb(), 0, 'f', 1)
+        .arg(getParityStr(msg.getPayloadParityStatus()))
+        .arg(msg.getPayloadCRCStatus() ? "ok" : "err");
+
+    displayStatus(status);
+    displayText(msg.getMessage()); // We do not show constituents of the message (call1, ...)
+    displayFTStatus(msg.getPayloadParityStatus(), msg.getPayloadCRCStatus());
+}
+
 void ChirpChatDemodGUI::displayText(const QString& text)
 {
     QTextCursor cursor = ui->messageText->textCursor();
@@ -754,11 +802,11 @@ void ChirpChatDemodGUI::displayStatus(const QString& status)
 
 QString ChirpChatDemodGUI::getParityStr(int parityStatus)
 {
-    if (parityStatus == (int) ParityError) {
+    if (parityStatus == (int) ChirpChatDemodSettings::ParityError) {
         return "err";
-    } else if (parityStatus == (int) ParityCorrected) {
+    } else if (parityStatus == (int) ChirpChatDemodSettings::ParityCorrected) {
         return "fix";
-    } else if (parityStatus == (int) ParityOK) {
+    } else if (parityStatus == (int) ChirpChatDemodSettings::ParityOK) {
         return "ok";
     } else {
         return "n/a";

plugins/channelrx/demodchirpchat/chirpchatdemodgui.h

@@ -89,14 +89,6 @@ private slots:
 	void tick();
 
 private:
-	enum ParityStatus // matches decoder status
-	{
-		ParityUndefined,
-		ParityError,
-		ParityCorrected,
-		ParityOK
-	};
-
 	Ui::ChirpChatDemodGUI* ui;
 	PluginAPI* m_pluginAPI;
 	DeviceUISet* m_deviceUISet;
@@ -120,12 +112,14 @@ private:
 	void displaySettings();
     void displaySquelch();
     void setBandwidths();
-    void showLoRaMessage(const Message& message);
+    void showLoRaMessage(const Message& message); //!< For LoRa coding scheme
     void showTextMessage(const Message& message); //!< For TTY and ASCII
+    void showFTMessage(const Message& message);   //!< For FT coding scheme
 	void displayText(const QString& text);
 	void displayBytes(const QByteArray& bytes);
 	void displayStatus(const QString& status);
     void displayLoRaStatus(int headerParityStatus, bool headerCRCStatus, int payloadParityStatus, bool payloadCRCStatus);
+    void displayFTStatus(int payloadParityStatus, bool payloadCRCStatus);
 	QString getParityStr(int parityStatus);
     void resetLoRaStatus();
 	bool handleMessage(const Message& message);

plugins/channelrx/demodchirpchat/chirpchatdemodmsg.h

@@ -21,6 +21,8 @@
 #include <QObject>
 #include "util/message.h"
 
+#include "chirpchatdemodsettings.h"
+
 namespace ChirpChatDemodMsg
 {
     class MsgDecodeSymbols : public Message {
@@ -178,7 +180,7 @@ namespace ChirpChatDemodMsg
             m_earlyEOM(false),
             m_headerParityStatus(false),
             m_headerCRCStatus(false),
-            m_payloadParityStatus(false),
+            m_payloadParityStatus((int) ChirpChatDemodSettings::ParityUndefined),
             m_payloadCRCStatus(false)
         { }
     };
@@ -240,6 +242,8 @@ namespace ChirpChatDemodMsg
         float getSingalDb() const { return m_signalDb; }
         float getNoiseDb() const { return m_noiseDb; }
         const QString& getMsgTimestamp() const { return m_msgTimestamp; }
+        int getPayloadParityStatus() const { return m_payloadParityStatus; }
+        bool getPayloadCRCStatus() const { return m_payloadCRCStatus; }
 
         static MsgReportDecodeFT* create()
         {
@@ -275,6 +279,12 @@ namespace ChirpChatDemodMsg
         void setMsgTimestamp(const QString& ts) {
             m_msgTimestamp = ts;
         }
+        void setPayloadParityStatus(int payloadParityStatus) {
+            m_payloadParityStatus = payloadParityStatus;
+        }
+        void setPayloadCRCStatus(bool payloadCRCStatus) {
+            m_payloadCRCStatus = payloadCRCStatus;
+        }
 
     private:
         QString m_message;
@@ -287,6 +297,8 @@ namespace ChirpChatDemodMsg
         float m_signalDb;
         float m_noiseDb;
         QString m_msgTimestamp;
+        int m_payloadParityStatus;
+        bool m_payloadCRCStatus;
 
         MsgReportDecodeFT() :
             Message(),
@@ -294,7 +306,9 @@ namespace ChirpChatDemodMsg
             m_freeText(false),
             m_syncWord(0),
             m_signalDb(0.0),
-            m_noiseDb(0.0)
+            m_noiseDb(0.0),
+            m_payloadParityStatus((int) ChirpChatDemodSettings::ParityUndefined),
+            m_payloadCRCStatus(false)
         { }
     };
 }

plugins/channelrx/demodchirpchat/chirpchatdemodsettings.h

@@ -41,6 +41,14 @@ struct ChirpChatDemodSettings
         CodingFT     //!< FT8/4 scheme (payload 174 bits LDPC)
     };
 
+    enum ParityStatus
+    {
+        ParityUndefined,
+        ParityError,
+        ParityCorrected,
+        ParityOK
+    };
+
     int m_inputFrequencyOffset;
     int m_bandwidthIndex;
     int m_spreadFactor;

plugins/channeltx/modchirpchat/chirpchatmodencoderft.cpp

@@ -96,7 +96,7 @@ void ChirpChatModEncoderFT::encodeTextMsg(const QString& text, int a174[])
     std::fill(a77, a77 + 77, 0);
     QString sentMsg = text.rightJustified(13, ' ', true);
 
-    if (!FT8::Packing::packfree(a77, sentMsg.toStdString()))
+    if (!FT8::Packing::packfree(a77, sentMsg.toUpper().toStdString()))
     {
         qDebug("ChirpChatModEncoderFT::encodeTextMsg: failed to encode free text message (%s)", qPrintable(sentMsg));
         return;
@@ -109,21 +109,27 @@ void ChirpChatModEncoderFT::encodeMsgBeaconOrCQ(const QString& myCall, const QSt
 {
     int c28_1, c28_2, g15;
 
-    if (!FT8::Packing::packcall_std(c28_1, shorthand.toStdString())) //
+    if (!FT8::Packing::packcall_std(c28_1, shorthand.toUpper().toStdString())) //
     {
-        qDebug("ChirpChatModEncoderFT::encodeMsgBeacon: failed to encode call1 (%s)", qPrintable(shorthand));
+        qDebug("ChirpChatModEncoderFT::encodeMsgBeaconOrCQ: failed to encode call1 (%s)", qPrintable(shorthand));
         return;
     }
 
-    if (!FT8::Packing::packcall_std(c28_2, myCall.toStdString()))
+    if (!FT8::Packing::packcall_std(c28_2, myCall.toUpper().toStdString()))
     {
-        qDebug("ChirpChatModEncoderFT::encodeMsgBeacon: failed to encode call2 (%s)", qPrintable(myCall));
+        qDebug("ChirpChatModEncoderFT::encodeMsgBeaconOrCQ: failed to encode call2 (%s)", qPrintable(myCall));
         return;
     }
 
-    if (!FT8::Packing::packgrid(g15, myLocator.toStdString()))
+    if (myLocator.size() < 4)
     {
-        qDebug("ChirpChatModEncoderFT::encodeMsgBeacon: failed to encode locator (%s)", qPrintable(myLocator));
+        qDebug("ChirpChatModEncoderFT::encodeMsgBeaconOrCQ: locator invalid (%s)", qPrintable(myLocator));
+        return;
+    }
+
+    if (!FT8::Packing::packgrid(g15, myLocator.left(4).toUpper().toStdString()))
+    {
+        qDebug("ChirpChatModEncoderFT::encodeMsgBeaconOrCQ: failed to encode locator (%s)", qPrintable(myLocator));
         return;
     }
 
@@ -137,21 +143,27 @@ void ChirpChatModEncoderFT::encodeMsgReply(const QString& myCall, const QString&
 {
     int c28_1, c28_2, g15;
 
-    if (!FT8::Packing::packcall_std(c28_1, urCall.toStdString())) //
+    if (!FT8::Packing::packcall_std(c28_1, urCall.toUpper().toStdString())) //
     {
-        qDebug("ChirpChatModEncoderFT::encodeMsgBeacon: failed to encode call1 (%s)", qPrintable(urCall));
+        qDebug("ChirpChatModEncoderFT::encodeMsgReply: failed to encode call1 (%s)", qPrintable(urCall));
         return;
     }
 
-    if (!FT8::Packing::packcall_std(c28_2, myCall.toStdString()))
+    if (!FT8::Packing::packcall_std(c28_2, myCall.toUpper().toStdString()))
     {
-        qDebug("ChirpChatModEncoderFT::encodeMsgBeacon: failed to encode call2 (%s)", qPrintable(myCall));
+        qDebug("ChirpChatModEncoderFT::encodeMsgReply: failed to encode call2 (%s)", qPrintable(myCall));
         return;
     }
 
-    if (!FT8::Packing::packgrid(g15, myLocator.toStdString()))
+    if (myLocator.size() < 4)
     {
-        qDebug("ChirpChatModEncoderFT::encodeMsgBeacon: failed to encode locator (%s)", qPrintable(myLocator));
+        qDebug("ChirpChatModEncoderFT::encodeMsgReply: locator invalid (%s)", qPrintable(myLocator));
+        return;
+    }
+
+    if (!FT8::Packing::packgrid(g15, myLocator.left(4).toUpper().toStdString()))
+    {
+        qDebug("ChirpChatModEncoderFT::encodeMsgReply: failed to encode locator (%s)", qPrintable(myLocator));
         return;
     }
 
@@ -165,21 +177,21 @@ void ChirpChatModEncoderFT::encodeMsgReport(const QString& myCall, const QString
 {
     int c28_1, c28_2, g15;
 
-    if (!FT8::Packing::packcall_std(c28_1, urCall.toStdString())) //
+    if (!FT8::Packing::packcall_std(c28_1, urCall.toUpper().toStdString())) //
     {
-        qDebug("ChirpChatModEncoderFT::encodeMsgBeacon: failed to encode call1 (%s)", qPrintable(urCall));
+        qDebug("ChirpChatModEncoderFT::encodeMsgReport: failed to encode call1 (%s)", qPrintable(urCall));
         return;
     }
 
-    if (!FT8::Packing::packcall_std(c28_2, myCall.toStdString()))
+    if (!FT8::Packing::packcall_std(c28_2, myCall.toUpper().toStdString()))
     {
-        qDebug("ChirpChatModEncoderFT::encodeMsgBeacon: failed to encode call2 (%s)", qPrintable(myCall));
+        qDebug("ChirpChatModEncoderFT::encodeMsgReport: failed to encode call2 (%s)", qPrintable(myCall));
         return;
     }
 
-    if (!FT8::Packing::packgrid(g15, myReport.toStdString()))
+    if (!FT8::Packing::packgrid(g15, myReport.toUpper().toStdString()))
     {
-        qDebug("ChirpChatModEncoderFT::encodeMsgBeacon: failed to encode report (%s)", qPrintable(myReport));
+        qDebug("ChirpChatModEncoderFT::encodeMsgReport: failed to encode report (%s)", qPrintable(myReport));
         return;
     }
 
@@ -193,21 +205,21 @@ void ChirpChatModEncoderFT::encodeMsgFinish(const QString& myCall, const QString
 {
     int c28_1, c28_2, g15;
 
-    if (!FT8::Packing::packcall_std(c28_1, urCall.toStdString())) //
+    if (!FT8::Packing::packcall_std(c28_1, urCall.toUpper().toStdString())) //
     {
-        qDebug("ChirpChatModEncoderFT::encodeMsgBeacon: failed to encode call1 (%s)", qPrintable(urCall));
+        qDebug("ChirpChatModEncoderFT::encodeMsgFinish: failed to encode call1 (%s)", qPrintable(urCall));
         return;
     }
 
-    if (!FT8::Packing::packcall_std(c28_2, myCall.toStdString()))
+    if (!FT8::Packing::packcall_std(c28_2, myCall.toUpper().toStdString()))
     {
-        qDebug("ChirpChatModEncoderFT::encodeMsgBeacon: failed to encode call2 (%s)", qPrintable(myCall));
+        qDebug("ChirpChatModEncoderFT::encodeMsgFinish: failed to encode call2 (%s)", qPrintable(myCall));
         return;
     }
 
-    if (!FT8::Packing::packgrid(g15, shorthand.toStdString()))
+    if (!FT8::Packing::packgrid(g15, shorthand.toUpper().toStdString()))
     {
-        qDebug("ChirpChatModEncoderFT::encodeMsgBeacon: failed to encode shorthand (%s)", qPrintable(shorthand));
+        qDebug("ChirpChatModEncoderFT::encodeMsgFinish: failed to encode shorthand (%s)", qPrintable(shorthand));
         return;
     }