Do not try to talk to bootloaders in the main flight code management routines

src/comm/SerialLink.cc

@@ -115,6 +115,32 @@ QList<QString> SerialLink::getCurrentPorts()
     return m_ports;
 }
 
+bool SerialLink::isBootloader()
+{
+    QList<QSerialPortInfo> portList =  QSerialPortInfo::availablePorts();
+
+    if( portList.count() == 0){
+        return false;
+    }
+
+    foreach (const QSerialPortInfo &info, portList)
+    {
+//        qDebug() << "PortName    : " << info.portName()
+//                 << "Description : " << info.description();
+//        qDebug() << "Manufacturer: " << info.manufacturer();
+
+       if (info.portName().trimmed() == this->m_portName.trimmed() &&
+               (info.description().toLower().contains("bootloader") ||
+                info.description().toLower().contains("px4 bl"))) {
+           qDebug() << "BOOTLOADER FOUND";
+           return true;
+       }
+    }
+
+    // Not found
+    return false;
+}
+
 void SerialLink::loadSettings()
 {
     // Load defaults from settings
@@ -445,6 +471,28 @@ bool SerialLink::hardwareConnect(QString &type)
     }
 
     qDebug() << "SerialLink: hardwareConnect to " << m_portName;
+
+    if (isBootloader()) {
+        qDebug() << "Not connecting to a bootloader, waiting for 2nd chance";
+
+        const unsigned retry_limit = 12;
+        unsigned retries;
+
+        for (retries = 0; retries < retry_limit; retries++) {
+            if (!isBootloader()) {
+                break;
+            }
+            QGC::SLEEP::msleep(500);
+        }
+
+        // Check limit
+        if (retries == retry_limit) {
+
+            // bail out
+            return false;
+        }
+    }
+
     m_port = new QSerialPort(m_portName);
     m_port->moveToThread(this);
 

src/comm/SerialLink.h

@@ -72,6 +72,9 @@ public:
     /** @brief Get a list of the currently available ports */
     QList<QString> getCurrentPorts();
 
+    /** @brief Check if the current port is a bootloader */
+    bool isBootloader();
+
     void requestReset();
 
     bool isConnected() const;