Add HAS_NO_BATTERY - use to disable battery icon on config page

Author: PaulZC

Firmware/RTK_Surveyor/Begin.ino

@@ -848,7 +848,7 @@ void beginLEDs()
 //Configure the on board MAX17048 fuel gauge
 void beginFuelGauge()
 {
-  if (productVariant == REFERENCE_STATION)
+  if (HAS_NO_BATTERY)
     return; //Reference station does not have a battery
 
   //Set up the MAX17048 LiPo fuel gauge

Firmware/RTK_Surveyor/Form.ino

@@ -763,7 +763,12 @@ void createSettingsString(char* newSettings)
 
   stringRecord(newSettings, "logFileName", logFileName);
 
-  if (productVariant != REFERENCE_STATION) //Ref Stn does not have a battery
+  if (HAS_NO_BATTERY) //Ref Stn does not have a battery
+  {
+    stringRecord(newSettings, "batteryIconFileName", "src/BatteryBlank.png");
+    stringRecord(newSettings, "batteryPercent", " ");
+  }
+  else
   {
     //Determine battery icon
     int iconLevel = 0;
@@ -921,7 +926,12 @@ void createDynamicDataString(char* settingsCSV)
   stringRecord(settingsCSV, "ecefY", ecefY, 3);
   stringRecord(settingsCSV, "ecefZ", ecefZ, 3);
 
-  if (productVariant != REFERENCE_STATION) //Ref Stn does not have a battery
+  if (HAS_NO_BATTERY) //Ref Stn does not have a battery
+  {
+    stringRecord(settingsCSV, "batteryIconFileName", "src/BatteryBlank.png");
+    stringRecord(settingsCSV, "batteryPercent", " ");
+  }
+  else
   {
     //Determine battery icon
     int iconLevel = 0;

Firmware/RTK_Surveyor/settings.h

@@ -81,6 +81,10 @@ ProductVariant productVariant = RTK_SURVEYOR;
 //The rising edge of the TP signal indicates the true top-of-second
 #define HAS_GNSS_TP_INT (productVariant == REFERENCE_STATION)
 
+//Macro to show if the the RTK variant has no battery
+#define HAS_NO_BATTERY  (productVariant == REFERENCE_STATION)
+#define HAS_BATTERY     (!HAS_NO_BATTERY)
+
 typedef enum
 {
   BUTTON_ROVER = 0,