Add macOS USB UART support

src/MainWindow.cpp

@@ -212,6 +212,45 @@ QString optionalDopText(const std::optional<double> &value)
     return QString::number(*value, 'f', 3);
 }
 
+QStringList detectedSerialPorts()
+{
+    const QDir deviceDirectory(QStringLiteral("/dev"));
+    QStringList patterns;
+#ifdef Q_OS_MACOS
+    // macOS exposes USB UARTs as paired callout (cu.*) and terminal (tty.*)
+    // devices. Prefer cu.* because it does not wait for carrier detect.
+    patterns = {
+        QStringLiteral("cu.usb*"), QStringLiteral("cu.wchusbserial*"),
+        QStringLiteral("cu.SLAB_USBtoUART*"), QStringLiteral("cu.*USB*"),
+        QStringLiteral("tty.usb*"), QStringLiteral("tty.wchusbserial*"),
+        QStringLiteral("tty.SLAB_USBtoUART*"), QStringLiteral("tty.*USB*")};
+#else
+    patterns = {QStringLiteral("ttyUSB*"), QStringLiteral("ttyACM*")};
+#endif
+
+    QStringList ports;
+    for (const QString &pattern : patterns) {
+        const QStringList names = deviceDirectory.entryList(
+            {pattern}, QDir::System | QDir::Files, QDir::Name);
+        for (const QString &name : names) {
+            const QString path = QStringLiteral("/dev/") + name;
+            if (!ports.contains(path)) {
+                ports.push_back(path);
+            }
+        }
+    }
+    return ports;
+}
+
+QString fallbackSerialPort()
+{
+#ifdef Q_OS_MACOS
+    return QStringLiteral("/dev/cu.usbserial");
+#else
+    return QStringLiteral("/dev/ttyUSB2");
+#endif
+}
+
 void mergeDopValues(DopValues &target, const DopValues &source)
 {
     if (source.gdop.has_value()) {
@@ -425,6 +464,34 @@ void MainWindow::openTelemetryLog()
     }
 }
 
+void MainWindow::refreshSerialPorts()
+{
+    const QString previousPort = m_portCombo->currentText().trimmed();
+    const QString configuredPort = qEnvironmentVariable("LOCATION_PLOTTER_PORT").trimmed();
+    const QStringList detectedPorts = detectedSerialPorts();
+
+    m_portCombo->clear();
+    for (const QString &port : detectedPorts) {
+        m_portCombo->addItem(port);
+    }
+
+    QString selectedPort;
+    if (!configuredPort.isEmpty()) {
+        selectedPort = configuredPort;
+    } else if (!previousPort.isEmpty() && detectedPorts.contains(previousPort)) {
+        selectedPort = previousPort;
+    } else if (!detectedPorts.isEmpty()) {
+        selectedPort = detectedPorts.first();
+    } else {
+        selectedPort = previousPort.isEmpty() ? fallbackSerialPort() : previousPort;
+    }
+
+    if (m_portCombo->findText(selectedPort) < 0) {
+        m_portCombo->addItem(selectedPort);
+    }
+    m_portCombo->setCurrentText(selectedPort);
+}
+
 void MainWindow::handleSerialLine(const QString &line)
 {
     static const QRegularExpression solveStartRegex(
@@ -727,19 +794,16 @@ void MainWindow::buildUi()
 
     m_portCombo = new QComboBox(this);
     m_portCombo->setObjectName(QStringLiteral("portSelector"));
-    m_portCombo->setMinimumWidth(165);
-    m_portCombo->setEditable(false);
-    QDir deviceDirectory(QStringLiteral("/dev"));
-    const QStringList deviceNames = deviceDirectory.entryList(
-        {QStringLiteral("ttyUSB*")},
-        QDir::System | QDir::Files | QDir::Readable, QDir::Name);
-    for (const QString &deviceName : deviceNames) {
-        m_portCombo->addItem(QStringLiteral("/dev/") + deviceName);
-    }
-    if (m_portCombo->findText(QStringLiteral("/dev/ttyUSB2")) < 0) {
-        m_portCombo->addItem(QStringLiteral("/dev/ttyUSB2"));
-    }
-    m_portCombo->setCurrentText(QStringLiteral("/dev/ttyUSB2"));
+    m_portCombo->setMinimumWidth(220);
+    m_portCombo->setEditable(true);
+    m_portCombo->setToolTip(QStringLiteral(
+        "USB UART portu. macOS'ta /dev/cu.usb... tercih edilir; /dev/tty.usb... da desteklenir."));
+    refreshSerialPorts();
+
+    auto *refreshPortsButton = new QToolButton(this);
+    refreshPortsButton->setObjectName(QStringLiteral("refreshPortsButton"));
+    refreshPortsButton->setText(QStringLiteral("Yenile"));
+    refreshPortsButton->setToolTip(QStringLiteral("Seri port listesini yenile"));
 
     m_baudCombo = new QComboBox(this);
     for (const int baud : {9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600}) {
@@ -773,6 +837,7 @@ void MainWindow::buildUi()
 
     toolbarLayout->addWidget(new QLabel(QStringLiteral("Port"), this));
     toolbarLayout->addWidget(m_portCombo);
+    toolbarLayout->addWidget(refreshPortsButton);
     toolbarLayout->addWidget(new QLabel(QStringLiteral("Baud"), this));
     toolbarLayout->addWidget(m_baudCombo);
     toolbarLayout->addWidget(new QLabel(QStringLiteral("Max"), this));
@@ -996,6 +1061,7 @@ void MainWindow::buildUi()
     connect(m_connectButton, &QPushButton::clicked, this, &MainWindow::toggleSerial);
     connect(m_clearButton, &QPushButton::clicked, this, &MainWindow::clearPoints);
     connect(m_openLogButton, &QPushButton::clicked, this, &MainWindow::openTelemetryLog);
+    connect(refreshPortsButton, &QToolButton::clicked, this, &MainWindow::refreshSerialPorts);
     connect(m_maxPointsSpin, qOverload<int>(&QSpinBox::valueChanged), this,
             &MainWindow::trimToMaxPoints);
     connect(m_autoFollowCheck, &QCheckBox::toggled, m_map, &MapWidget::setAutoFollow);