Fixes #2460

companion/src/eeprominterface.h

@@ -951,10 +951,11 @@ class SensorData {
     bool filter;
     bool logs;
     bool persistent;
+    bool onlyPositive;
 
     // for custom sensors
     unsigned int ratio;
-    unsigned int offset;
+    int offset;
 
     // for consumption
     unsigned int amps;

companion/src/firmwares/opentx/opentxeeprom.cpp

@@ -2801,7 +2801,8 @@ class SensorField: public TransformedField {
       internalField.Append(new BoolField<1>(sensor.filter));
       internalField.Append(new BoolField<1>(sensor.logs));
       internalField.Append(new BoolField<1>(sensor.persistent));
-      internalField.Append(new SpareBitsField<4>());
+      internalField.Append(new BoolField<1>(sensor.onlyPositive));
+      internalField.Append(new SpareBitsField<3>());
       internalField.Append(new UnsignedField<32>(_param, "param"));
     }
 
@@ -2810,7 +2811,7 @@ class SensorField: public TransformedField {
       if (sensor.type == SensorData::TELEM_TYPE_CUSTOM) {
         _id = sensor.id;
         _instance = sensor.instance;
-        _param = (sensor.ratio) + (sensor.offset << 16);
+        _param = (sensor.ratio) + ((unsigned int)sensor.offset << 16);
       }
       else {
         _id = sensor.persistentValue;
@@ -2831,8 +2832,8 @@ class SensorField: public TransformedField {
       if (sensor.type == SensorData::TELEM_TYPE_CUSTOM) {
         sensor.id = _id;
         sensor.instance = _instance;
-        sensor.ratio = _param & 0xFF;
-        sensor.offset = (_param >> 16) & 0xFF;
+        sensor.ratio = _param & 0xFFFF;
+        sensor.offset = (_param >> 16) & 0xFFFF;
       }
       else {
         sensor.persistentValue = _id;

companion/src/modeledit/telemetry.cpp

@@ -481,6 +481,7 @@ TelemetrySensorPanel::TelemetrySensorPanel(QWidget *parent, SensorData & sensor,
   ui->filter->setField(sensor.filter);
   ui->logs->setField(sensor.logs);
   ui->persistent->setField(sensor.persistent);
+  ui->onlyPositive->setField(sensor.onlyPositive);
   ui->gpsSensor->setField(sensor.gps);
   ui->altSensor->setField(sensor.alt);
   ui->ampsSensor->setField(sensor.amps);

companion/src/modeledit/telemetry_sensor.ui

@@ -13,7 +13,7 @@
   <property name="windowTitle">
    <string>Form</string>
   </property>
-  <layout class="QHBoxLayout" name="horizontalLayout" stretch="0,1,0,0,0,1,1,1,1,0,0,1,0,1,0,1,1,1,1,1,1,0,1,0,0,1,0,0,1,0,0,0,0">
+  <layout class="QHBoxLayout" name="horizontalLayout" stretch="0,1,0,0,0,1,1,1,1,0,0,1,0,1,0,1,1,1,1,1,1,0,1,0,0,1,0,0,1,0,0,0,0,0">
    <property name="leftMargin">
     <number>0</number>
    </property>
@@ -541,7 +541,7 @@
       <double>0.000000000000000</double>
      </property>
      <property name="maximum">
-      <double>3000.000000000000000</double>
+      <double>65535.000000000000000</double>
      </property>
     </widget>
    </item>
@@ -617,6 +617,16 @@
      </property>
     </widget>
    </item>
+   <item>
+    <widget class="AutoCheckBox" name="onlyPositive">
+     <property name="layoutDirection">
+      <enum>Qt::LeftToRight</enum>
+     </property>
+     <property name="text">
+      <string>Positive</string>
+     </property>
+    </widget>
+   </item>
    <item>
     <widget class="AutoCheckBox" name="logs">
      <property name="layoutDirection">