Fixed RC cal

files/styles/style-dark.css

@@ -229,6 +229,11 @@ QGCPX4SensorCalibration QLabel#accelLabel {
     min-height: 25px;
 }
 
+QGCPX4VehicleConfig QLabel#rcLabel {
+    color: #FEC654;
+    font-size: 18pt;
+}
+
 QGCToolWidgetItem {
     border: 1px solid #666;
     border-radius: 3px;

src/ui/QGCPX4VehicleConfig.cc

@@ -239,6 +239,8 @@ QGCPX4VehicleConfig::QGCPX4VehicleConfig(QWidget *parent) :
     connect(&updateTimer, SIGNAL(timeout()), this, SLOT(updateView()));
     updateTimer.start();
 
+    ui->rcLabel->setText(tr("NO RADIO CONTROL INPUT DETECTED. PLEASE ENSURE THE TRANSMITTER IS ON."));
+
 }
 
 QGCPX4VehicleConfig::~QGCPX4VehicleConfig()
@@ -423,6 +425,7 @@ void QGCPX4VehicleConfig::startCalibrationRC()
         QMessageBox::warning(0,
                              tr("RC not Connected"),
                              tr("Is the RC receiver connected and transmitter turned on? Detected %1 radio channels. To operate PX4, you need at least 5 channels. ").arg(chanCount));
+        ui->rcCalibrationButton->setChecked(false);
         return;
     }
 
@@ -464,6 +467,9 @@ void QGCPX4VehicleConfig::startCalibrationRC()
 
 void QGCPX4VehicleConfig::stopCalibrationRC()
 {
+    if (!calibrationEnabled)
+        return;
+
     QMessageBox::information(0,"Trims","Ensure all controls are centered and throttle is in the lowest position. Click OK to continue");
 
     calibrationEnabled = false;
@@ -1808,5 +1814,8 @@ void QGCPX4VehicleConfig::updateView()
 
         updateRcWidgetValues();
         updateRcChanLabels();
+        if (chanCount > 0)
+            ui->rcLabel->setText(tr("Radio control detected with %1 channels.").arg(chanCount));
     }
+
 }

src/ui/QGCPX4VehicleConfig.ui

@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>1256</width>
-    <height>918</height>
+    <height>985</height>
    </rect>
   </property>
   <property name="sizePolicy">
@@ -198,6 +198,13 @@
            </item>
           </layout>
          </item>
+         <item>
+          <widget class="QLabel" name="rcLabel">
+           <property name="text">
+            <string>Waiting for RC channel data..</string>
+           </property>
+          </widget>
+         </item>
          <item>
           <widget class="QCheckBox" name="advancedCheckBox">
            <property name="text">
@@ -822,8 +829,8 @@
                   <rect>
                    <x>0</x>
                    <y>0</y>
-                   <width>21</width>
-                   <height>16</height>
+                   <width>98</width>
+                   <height>28</height>
                   </rect>
                  </property>
                  <layout class="QHBoxLayout" name="horizontalLayout_4">
@@ -859,8 +866,8 @@
                   <rect>
                    <x>0</x>
                    <y>0</y>
-                   <width>21</width>
-                   <height>16</height>
+                   <width>98</width>
+                   <height>28</height>
                   </rect>
                  </property>
                  <layout class="QHBoxLayout" name="horizontalLayout_5">
@@ -910,8 +917,8 @@
                   <rect>
                    <x>0</x>
                    <y>0</y>
-                   <width>16</width>
-                   <height>16</height>
+                   <width>98</width>
+                   <height>28</height>
                   </rect>
                  </property>
                  <layout class="QVBoxLayout" name="verticalLayout_7">