Bind support for DSMX with 8 or more channels

src/ui/QGCPX4VehicleConfig.cc

@@ -335,7 +335,7 @@ void QGCPX4VehicleConfig::toggleCalibrationRC(bool enabled)
 
 void QGCPX4VehicleConfig::toggleSpektrumPairing(bool enabled)
 {
-    if (!ui->dsm2RadioButton->isChecked() && !ui->dsmxRadioButton) {
+    if (!ui->dsm2RadioButton->isChecked() && !ui->dsmxRadioButton && !ui->dsmx8RadioButton) {
         // Reject
         QMessageBox warnMsgBox;
         warnMsgBox.setText(tr("Please select a Spektrum Protocol Version"));
@@ -347,8 +347,16 @@ void QGCPX4VehicleConfig::toggleSpektrumPairing(bool enabled)
     }
 
     UASInterface* mav = UASManager::instance()->getActiveUAS();
-    if (mav)
-        mav->pairRX(0, ui->dsmxRadioButton->isChecked() ? 1 : 0);
+    if (mav) {
+        int rxSubType;
+        if (ui->dsm2RadioButton->isChecked())
+            rxSubType = 0;
+        else if (ui->dsmxRadioButton->isChecked())
+            rxSubType = 1;
+        else // if (ui->dsmx8RadioButton->isChecked())
+            rxSubType = 2;
+        mav->pairRX(0, rxSubType);
+    }
 }
 
 void QGCPX4VehicleConfig::setTrimPositions()

src/ui/QGCPX4VehicleConfig.ui

@@ -237,7 +237,14 @@
                 <item>
                  <widget class="QRadioButton" name="dsmxRadioButton">
                   <property name="text">
-                   <string>DSMX Mode</string>
+                   <string>DSMX Mode (3 to 7 channels)</string>
+                  </property>
+                 </widget>
+                </item>
+                <item>
+                 <widget class="QRadioButton" name="dsmx8RadioButton">
+                  <property name="text">
+                   <string>DSMX Mode (8 or more channels)</string>
                   </property>
                  </widget>
                 </item>