* big refactor of the 'display' object. Now defined in variants/*/target modules.

variants/t1000-e/NullDisplayDriver.h

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <helpers/ui/DisplayDriver.h>
+
+class NullDisplayDriver : public DisplayDriver {
+public:
+  NullDisplayDriver() : DisplayDriver(128, 64) { }
+  bool begin() { return false; }   // not present
+
+  bool isOn() override { return false; }
+  void turnOn() override { }
+  void turnOff() override { }
+  void clear() override { }
+  void startFrame(Color bkg = DARK) override { }
+  void setTextSize(int sz) override { }
+  void setColor(Color c) override { }
+  void setCursor(int x, int y) override { }
+  void print(const char* str) override { }
+  void fillRect(int x, int y, int w, int h) override { }
+  void drawRect(int x, int y, int w, int h) override { }
+  void drawXbm(int x, int y, const uint8_t* bits, int w, int h) override { }
+  uint16_t getTextWidth(const char* str) override { return 0; }
+  void endFrame() { }
+};

variants/t1000-e/platformio.ini

@@ -46,7 +46,7 @@ build_flags = ${t1000-e.build_flags}
   -D OFFLINE_QUEUE_SIZE=256
   -D RX_BOOSTED_GAIN=true
   -D RF_SWITCH_TABLE
-  -D HAS_UI
+  -D DISPLAY_CLASS=NullDisplayDriver
 build_src_filter = ${t1000-e.build_src_filter}
   +<helpers/nrf52/SerialBLEInterface.cpp>
   +<../examples/companion_radio/*.cpp>

variants/t1000-e/target.cpp

@@ -12,6 +12,10 @@ VolatileRTCClock rtc_clock;
 MicroNMEALocationProvider nmea = MicroNMEALocationProvider(Serial1);
 T1000SensorManager sensors = T1000SensorManager(nmea);
 
+#ifdef DISPLAY_CLASS
+  NullDisplayDriver display;
+#endif
+
 #ifndef LORA_CR
   #define LORA_CR      5
 #endif

variants/t1000-e/target.h

@@ -8,6 +8,9 @@
 #include <helpers/ArduinoHelpers.h>
 #include <helpers/SensorManager.h>
 #include <helpers/sensors/LocationProvider.h>
+#ifdef DISPLAY_CLASS
+  #include "NullDisplayDriver.h"
+#endif
 
 class T1000SensorManager: public SensorManager {
   bool gps_active = false;
@@ -27,6 +30,10 @@ public:
   bool setSettingValue(const char* name, const char* value) override;
 };
 
+#ifdef DISPLAY_CLASS
+  extern NullDisplayDriver display;
+#endif
+
 extern T1000eBoard board;
 extern WRAPPER_CLASS radio_driver;
 extern VolatileRTCClock rtc_clock;