fix tests

Software/PC_Application/LibreVNA-GUI/Device/LibreVNA/librevnatcpdriver.cpp

@@ -44,6 +44,9 @@ LibreVNATCPDriver::LibreVNATCPDriver()
         ssdpSockets.push_back(socket);
     }
 
+    connect(&ssdpTimer, &QTimer::timeout,this, &LibreVNATCPDriver::SSDRequest);
+    ssdpTimer.start(1000);
+
     specificSettings.push_back(Savable::SettingDescription(&captureRawReceiverValues, "LibreVNATCPDriver.captureRawReceiverValues", false));
     specificSettings.push_back(Savable::SettingDescription(&harmonicMixing, "LibreVNATCPDriver.harmonicMixing", false));
     specificSettings.push_back(Savable::SettingDescription(&SASignalID, "LibreVNATCPDriver.signalID", true));
@@ -60,26 +63,6 @@ QString LibreVNATCPDriver::getDriverName()
 
 std::set<QString> LibreVNATCPDriver::GetAvailableDevices()
 {
-    QByteArray data;
-    data.append("M-SEARCH * HTTP/1.1\r\n"
-                "HOST: 239.255.255.250:1900\r\n"
-                "MAN: \"ssdp:discover\"\r\n"
-                "MX: 1\r\n"
-                "ST: ");
-    data.append(service_name.toUtf8());
-    data.append("\r\n"
-                "\r\n");
-
-    // just delete everything instead of keeping old entries (they will answer again if they are still available)
-    detectedDevices.clear();
-//    pruneDetectedDevices();
-    for(auto s : ssdpSockets) {
-        s->writeDatagram(data.data(), SSDPaddress, SSDPport);
-    }
-
-    // need delay here while still processing events
-    SynSleep::sleep(100);
-
     std::set<QString> serials;
     for(auto d : detectedDevices) {
         serials.insert(d.serial);
@@ -171,6 +154,25 @@ void LibreVNATCPDriver::registerTypes()
     qDebug() << "Registering meta type: " << qRegisterMetaType<TransmissionResult>();
 }
 
+void LibreVNATCPDriver::SSDRequest()
+{
+    QByteArray data;
+    data.append("M-SEARCH * HTTP/1.1\r\n"
+                "HOST: 239.255.255.250:1900\r\n"
+                "MAN: \"ssdp:discover\"\r\n"
+                "MX: 1\r\n"
+                "ST: ");
+    data.append(service_name.toUtf8());
+    data.append("\r\n"
+                "\r\n");
+
+    pruneDetectedDevices();
+
+    for(auto s : ssdpSockets) {
+        s->writeDatagram(data.data(), SSDPaddress, SSDPport);
+    }
+}
+
 void LibreVNATCPDriver::SSDPreceived(QUdpSocket *sock)
 {
     while(sock->hasPendingDatagrams()) {
@@ -183,7 +185,7 @@ void LibreVNATCPDriver::SSDPreceived(QUdpSocket *sock)
         QString ssdp_string = QString(buf);
         auto lines = ssdp_string.split("\r\n");
 
-        QString location, st, serial, max_age;
+        QString location, st, serial, max_age = "2";
 
         if(lines[0] != "HTTP/1.1 200 OK") {
             continue;

Software/PC_Application/LibreVNA-GUI/Device/LibreVNA/librevnatcpdriver.h

@@ -53,6 +53,7 @@ public:
     }
 
 private slots:
+    void SSDRequest();
     void SSDPreceived(QUdpSocket *sock);
     void ReceivedData();
     void ReceivedLog();
@@ -101,6 +102,7 @@ private:
     QQueue<Transmission> transmissionQueue;
     bool startNextTransmission();
     QTimer transmissionTimer;
+    QTimer ssdpTimer;
     bool transmissionActive;
 
     std::thread *m_receiveThread;

Software/PC_Application/LibreVNA-GUI/Util/util.h

@@ -11,42 +11,6 @@
 #include <QEventLoop>
 #include <QTimer>
 
-class SynSleep: public QObject {
-    Q_OBJECT
-public:
-    SynSleep(){
-        needRunning=1;
-    }
-
-public slots:
-    void sleep(){
-        if (needRunning==1)
-            loop.exec();
-    }
-
-    void reset(){
-        needRunning=1;
-    }
-
-    virtual void finish(){
-        needRunning=0;
-        loop.exit();
-    }
-
-    static void sleep(int ms) {
-        QTimer tim;
-        tim.setSingleShot(true);
-        auto ss = SynSleep();
-        connect(&tim, &QTimer::timeout, &ss, &SynSleep::finish);
-        tim.start(ms);
-        ss.sleep();
-    }
-
-private:
-    QEventLoop loop;
-    int needRunning;
-};
-
 namespace Util {
     template<typename T> T Scale(T value, T from_low, T from_high, T to_low, T to_high, bool log_from = false, bool log_to = false) {
         T normalized;

Software/PC_Application/LibreVNA-GUI/appwindow.cpp

@@ -1019,7 +1019,7 @@ void AppWindow::SetupSCPI()
 void AppWindow::StartTCPServer(int port)
 {
     server = new TCPServer(port);
-    connect(server, &TCPServer::received, &scpi, &SCPI::input, Qt::QueuedConnection);
+    connect(server, &TCPServer::received, &scpi, &SCPI::input);
     connect(&scpi, &SCPI::output, server, &TCPServer::send);
 }
 

Software/PC_Application/LibreVNA-GUI/scpi.cpp

@@ -3,7 +3,9 @@
 #include <QDebug>
 
 SCPI::SCPI() :
-    SCPINode("")
+    SCPINode(""),
+    semQueue(QSemaphore(1)),
+    semProcessing(QSemaphore(1))
 {
     WAIexecuting = false;
     OPCsetBitScheduled = false;
@@ -178,21 +180,30 @@ QString SCPI::getResultName(SCPI::Result r)
 
 void SCPI::input(QString line)
 {
+    semQueue.acquire();
     cmdQueue.append(line);
-    if(!processing) {
+    semQueue.release();
+    if(semProcessing.available()) {
         process();
     }
 }
 
 void SCPI::process()
 {
-    processing = true;
+    semProcessing.acquire();
-    while(!WAIexecuting && !cmdQueue.isEmpty()) {
+    semQueue.acquire();
+    auto queueBuf = cmdQueue;
+    semQueue.release();
+    while(!WAIexecuting && !queueBuf.isEmpty()) {
+        semQueue.acquire();
         auto cmd = cmdQueue.front();
         cmdQueue.pop_front();
+        queueBuf = cmdQueue;
+        semQueue.release();
         auto cmds = cmd.split(";");
         SCPINode *lastNode = this;
         for(auto cmd : cmds) {
+            qDebug() << "Handling cmd " << cmd;
             if(cmd.size() > 0) {
                 if(cmd[0] == ':' || cmd[0] == '*') {
                     // reset to root node
@@ -216,9 +227,10 @@ void SCPI::process()
                     emit output(response);
                 }
             }
+            qDebug() << "handling done";
         }
     }
-    processing = false;
+    semProcessing.release();
 }
 
 void SCPI::someOperationCompleted()

Software/PC_Application/LibreVNA-GUI/scpi.h

@@ -3,6 +3,7 @@
 
 #include <QString>
 #include <QObject>
+#include <QSemaphore>
 #include <vector>
 #include <functional>
 
@@ -122,6 +123,8 @@ private:
 
     QList<QString> cmdQueue;
     bool processing;
+    QSemaphore semQueue;
+    QSemaphore semProcessing;
 };
 
 #endif // SCPI_H